Source: sagemath
Version: 9.0-2
Severity: serious
Justification: FTBFS on amd64
Tags: bullseye sid ftbfs
Usertags: ftbfs-20200321 ftbfs-bullseye

Hi,

During a rebuild of all packages in sid, your package failed to build
on amd64.

Relevant part (hopefully):
> make[5]: Entering directory '/<<PKGBUILDDIR>>/sage/build/make'
> if [ -z "$SAGE_INSTALL_FETCH_ONLY" ]; then \
>       cd /<<PKGBUILDDIR>>/sage/src && source bin/sage-env && \
>       sage-logger -p 'time make -j4 sage' 
> '/<<PKGBUILDDIR>>/sage/logs/pkgs/sagelib-9.0.log'; \
> fi
> [sagelib-9.0] make[6]: Entering directory '/<<PKGBUILDDIR>>/sage/src'
> [sagelib-9.0] make[6]: warning: -j4 forced in submake: resetting jobserver 
> mode.
> [sagelib-9.0] cd . && export                                    \
> [sagelib-9.0]     SAGE_ROOT=/doesnotexist                               \
> [sagelib-9.0]     SAGE_SRC=/doesnotexist                                \
> [sagelib-9.0]     SAGE_SRC_ROOT=/doesnotexist                           \
> [sagelib-9.0]     SAGE_DOC_SRC=/doesnotexist                            \
> [sagelib-9.0]     SAGE_BUILD_DIR=/doesnotexist                          \
> [sagelib-9.0]     SAGE_PKGS=/<<PKGBUILDDIR>>/sage/build/pkgs                \
> [sagelib-9.0] && sage-python -u setup.py --no-user-cfg build install --root 
> ../../debian/build --install-layout deb -O2
> [sagelib-9.0] /<<PKGBUILDDIR>>/sage/src/bin/sage-env: line 130: cd: 
> /doesnotexist: No such file or directory
> [sagelib-9.0] Warning: overwriting SAGE_ROOT environment variable:
> [sagelib-9.0] Old SAGE_ROOT=/doesnotexist
> [sagelib-9.0] New SAGE_ROOT=
> [sagelib-9.0] Discovering Python/Cython source code....
> [sagelib-9.0] Discovered Python/Cython sources, time: 0.01 seconds.
> [sagelib-9.0] running build
> [sagelib-9.0] Generating auto-generated sources
> [sagelib-9.0] Building interpreters for fast_callable
> [sagelib-9.0] running build_cython
> [sagelib-9.0] Enabling Cython debugging support
> [sagelib-9.0] Updating Cython code....
> [sagelib-9.0] Finished Cythonizing, time: 1.51 seconds.
> [sagelib-9.0] running build_py
> [sagelib-9.0] running build_ext
> [sagelib-9.0] Executing 0 commands (using 1 thread)
> [sagelib-9.0] Time to execute 0 commands: 0.01 seconds.
> [sagelib-9.0] Total time spent compiling C/C++ extensions: 0.04 seconds.
> [sagelib-9.0] running install
> [sagelib-9.0] running install_lib
> [sagelib-9.0] writing byte-compilation script '/tmp/tmpsgo_pj_o.py'
> [sagelib-9.0] /usr/bin/python3 /tmp/tmpsgo_pj_o.py
> [sagelib-9.0] removing /tmp/tmpsgo_pj_o.py
> [sagelib-9.0] running install_egg_info
> [sagelib-9.0] Removing 
> ../../debian/build/usr/lib/python3/dist-packages/sage-9.0.egg-info
> [sagelib-9.0] Writing 
> ../../debian/build/usr/lib/python3/dist-packages/sage-9.0.egg-info
> [sagelib-9.0] Cleaning up stale installed files....
> [sagelib-9.0] - cleaning ../../debian/build/usr/lib/python3/dist-packages
> [sagelib-9.0] - cleaning build/lib.linux-x86_64-3.8
> [sagelib-9.0] Finished cleaning, time: 0.14 seconds.
> [sagelib-9.0] if [ "$UNAME" = "CYGWIN" ]; then                         \
> [sagelib-9.0]     sage-rebase.sh "$SAGE_LOCAL" 2>/dev/null;            \
> [sagelib-9.0] fi
> [sagelib-9.0] make[6]: Leaving directory '/<<PKGBUILDDIR>>/sage/src'
> [sagelib-9.0] 
> [sagelib-9.0] real    0m3.468s
> [sagelib-9.0] user    0m2.879s
> [sagelib-9.0] sys     0m0.427s
> cd ../.. && sage-logger -p './sage --docbuild --no-pdf-links all html ' 
> logs/dochtml.log
> [dochtml] 
> [dochtml] Building reference manual, first pass.
> [dochtml] 
> [dochtml] Setting permissions of DOT_SAGE directory so only you can read and 
> write it.
> [dochtml] [reference] building [inventory]: targets for 1 source files that 
> are out of date
> [dochtml] [reference] updating environment: 1 added, 0 changed, 0 removed
> [dochtml] [reference] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/references.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/references
> [dochtml] [polynomia] building [inventory]: targets for 66 source files that 
> are out of date
> [dochtml] [polynomia] updating environment: 66 added, 0 changed, 0 removed
> [dochtml] [repl     ] building [inventory]: targets for 37 source files that 
> are out of date
> [dochtml] [repl     ] updating environment: 37 added, 0 changed, 0 removed
> [dochtml] [tensor_fr] building [inventory]: targets for 19 source files that 
> are out of date
> [dochtml] [tensor_fr] updating environment: 19 added, 0 changed, 0 removed
> [dochtml] [manifolds] building [inventory]: targets for 75 source files that 
> are out of date
> [dochtml] [manifolds] updating environment: 75 added, 0 changed, 0 removed
> [dochtml] [tensor_fr] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/tensor_free_modules.
> [dochtml] [repl     ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/repl.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/tensor_free_modules
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/repl
> [dochtml] [algebras ] building [inventory]: targets for 74 source files that 
> are out of date
> [dochtml] [algebras ] updating environment: 74 added, 0 changed, 0 removed
> [dochtml] [combinat ] building [inventory]: targets for 367 source files that 
> are out of date
> [dochtml] [combinat ] updating environment: 367 added, 0 changed, 0 removed
> [dochtml] [algebras ] <unknown>:1301: DeprecationWarning: invalid escape 
> sequence \Q
> [dochtml] [polynomia] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/polynomial_rings.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/polynomial_rings
> [dochtml] [dynamics ] building [inventory]: targets for 12 source files that 
> are out of date
> [dochtml] [dynamics ] updating environment: 12 added, 0 changed, 0 removed
> [dochtml] [dynamics ] <unknown>:1301: DeprecationWarning: invalid escape 
> sequence \Q
> [dochtml] [dynamics ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/dynamics.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/dynamics
> [dochtml] [plot3d   ] building [inventory]: targets for 20 source files that 
> are out of date
> [dochtml] [plot3d   ] updating environment: 20 added, 0 changed, 0 removed
> [dochtml] [algebras ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/algebras.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/algebras
> [dochtml] [arithgrou] building [inventory]: targets for 12 source files that 
> are out of date
> [dochtml] [arithgrou] updating environment: 12 added, 0 changed, 0 removed
> [dochtml] [arithgrou] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/arithgroup.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/arithgroup
> [dochtml] [graphs   ] building [inventory]: targets for 62 source files that 
> are out of date
> [dochtml] [graphs   ] updating environment: 62 added, 0 changed, 0 removed
> [dochtml] [graphs   ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/graphs.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/graphs
> [dochtml] [homology ] building [inventory]: targets for 26 source files that 
> are out of date
> [dochtml] [homology ] updating environment: 26 added, 0 changed, 0 removed
> [dochtml] [homology ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/homology.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/homology
> [dochtml] [misc     ] building [inventory]: targets for 108 source files that 
> are out of date
> [dochtml] [misc     ] updating environment: 108 added, 0 changed, 0 removed
> [dochtml] [misc     ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/misc.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/misc
> [dochtml] [parallel ] building [inventory]: targets for 8 source files that 
> are out of date
> [dochtml] [parallel ] updating environment: 8 added, 0 changed, 0 removed
> [dochtml] [parallel ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/parallel.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/parallel
> [dochtml] [asymptoti] building [inventory]: targets for 8 source files that 
> are out of date
> [dochtml] [asymptoti] updating environment: 8 added, 0 changed, 0 removed
> [dochtml] [asymptoti] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/asymptotic.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/asymptotic
> [dochtml] [calculus ] building [inventory]: targets for 38 source files that 
> are out of date
> [dochtml] [calculus ] updating environment: 38 added, 0 changed, 0 removed
> [dochtml] [calculus ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/calculus.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/calculus
> [dochtml] [categorie] building [inventory]: targets for 212 source files that 
> are out of date
> [dochtml] [categorie] updating environment: 212 added, 0 changed, 0 removed
> [dochtml] [categorie] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/categories.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/categories
> [dochtml] [coding   ] building [inventory]: targets for 38 source files that 
> are out of date
> [dochtml] [coding   ] updating environment: 38 added, 0 changed, 0 removed
> [dochtml] [coding   ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/coding.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/coding
> [dochtml] [coercion ] building [inventory]: targets for 8 source files that 
> are out of date
> [dochtml] [coercion ] updating environment: 8 added, 0 changed, 0 removed
> [dochtml] [coercion ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/coercion.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/coercion
> [dochtml] [constants] building [inventory]: targets for 3 source files that 
> are out of date
> [dochtml] [constants] updating environment: 3 added, 0 changed, 0 removed
> [dochtml] [constants] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/constants.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/constants
> [dochtml] [cpython  ] building [inventory]: targets for 8 source files that 
> are out of date
> [dochtml] [cpython  ] updating environment: 8 added, 0 changed, 0 removed
> [dochtml] [cpython  ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/cpython.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/cpython
> [dochtml] [cryptogra] building [inventory]: targets for 22 source files that 
> are out of date
> [dochtml] [cryptogra] updating environment: 22 added, 0 changed, 0 removed
> [dochtml] [cryptogra] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/cryptography.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/cryptography
> [dochtml] [curves   ] building [inventory]: targets for 71 source files that 
> are out of date
> [dochtml] [curves   ] updating environment: 71 added, 0 changed, 0 removed
> [dochtml] [combinat ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/combinat.
> [dochtml] [manifolds] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/manifolds.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/manifolds
> [dochtml] [data_stru] building [inventory]: targets for 5 source files that 
> are out of date
> [dochtml] [data_stru] updating environment: 5 added, 0 changed, 0 removed
> [dochtml] [data_stru] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/data_structures.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/data_structures
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/combinat
> [dochtml] [databases] building [inventory]: targets for 13 source files that 
> are out of date
> [dochtml] [databases] updating environment: 13 added, 0 changed, 0 removed
> [dochtml] [curves   ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/curves.
> [dochtml] [diophanti] building [inventory]: targets for 2 source files that 
> are out of date
> [dochtml] [diophanti] updating environment: 2 added, 0 changed, 0 removed
> [dochtml] [diophanti] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/diophantine_approximation.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/diophantine_approximation
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/curves
> [dochtml] [discrete_] building [inventory]: targets for 48 source files that 
> are out of date
> [dochtml] [discrete_] updating environment: 48 added, 0 changed, 0 removed
> [dochtml] [doctest  ] building [inventory]: targets for 10 source files that 
> are out of date
> [dochtml] [doctest  ] updating environment: 10 added, 0 changed, 0 removed
> [dochtml] [databases] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/databases.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/databases
> [dochtml] [doctest  ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/doctest.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/doctest
> [dochtml] [finance  ] building [inventory]: targets for 7 source files that 
> are out of date
> [dochtml] [finance  ] updating environment: 7 added, 0 changed, 0 removed
> [dochtml] [finance  ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/finance.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/finance
> [dochtml] [finite_ri] building [inventory]: targets for 20 source files that 
> are out of date
> [dochtml] [finite_ri] updating environment: 20 added, 0 changed, 0 removed
> [dochtml] [function_] building [inventory]: targets for 11 source files that 
> are out of date
> [dochtml] [function_] updating environment: 11 added, 0 changed, 0 removed
> [dochtml] [finite_ri] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/finite_rings.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/finite_rings
> [dochtml] [function_] <unknown>:2169: DeprecationWarning: invalid escape 
> sequence \g
> [dochtml] [function_] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/function_fields.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/function_fields
> [dochtml] [functions] building [inventory]: targets for 20 source files that 
> are out of date
> [dochtml] [functions] updating environment: 20 added, 0 changed, 0 removed
> [dochtml] [game_theo] building [inventory]: targets for 6 source files that 
> are out of date
> [dochtml] [game_theo] updating environment: 6 added, 0 changed, 0 removed
> [dochtml] [functions] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/functions.
> [dochtml] [game_theo] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/game_theory.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/game_theory
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/functions
> [dochtml] [discrete_] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/discrete_geometry.
> [dochtml] [games    ] building [inventory]: targets for 5 source files that 
> are out of date
> [dochtml] [games    ] updating environment: 5 added, 0 changed, 0 removed
> [dochtml] [groups   ] building [inventory]: targets for 69 source files that 
> are out of date
> [dochtml] [groups   ] updating environment: 69 added, 0 changed, 0 removed
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/discrete_geometry
> [dochtml] [games    ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/games.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/games
> [dochtml] [hecke    ] building [inventory]: targets for 10 source files that 
> are out of date
> [dochtml] [hecke    ] updating environment: 10 added, 0 changed, 0 removed
> [dochtml] [history_a] building [inventory]: targets for 1 source files that 
> are out of date
> [dochtml] [history_a] updating environment: 1 added, 0 changed, 0 removed
> [dochtml] [history_a] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/history_and_license.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/history_and_license
> [dochtml] [hecke    ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/hecke.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/hecke
> [dochtml] [hyperboli] building [inventory]: targets for 6 source files that 
> are out of date
> [dochtml] [hyperboli] updating environment: 6 added, 0 changed, 0 removed
> [dochtml] [interface] building [inventory]: targets for 49 source files that 
> are out of date
> [dochtml] [interface] updating environment: 49 added, 0 changed, 0 removed
> [dochtml] [groups   ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/groups.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/groups
> [dochtml] [knots    ] building [inventory]: targets for 3 source files that 
> are out of date
> [dochtml] [knots    ] updating environment: 3 added, 0 changed, 0 removed
> [dochtml] [interface] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/interfaces.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/interfaces
> [dochtml] [hyperboli] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/hyperbolic_geometry.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/hyperbolic_geometry
> [dochtml] [lfunction] building [inventory]: targets for 5 source files that 
> are out of date
> [dochtml] [lfunction] updating environment: 5 added, 0 changed, 0 removed
> [dochtml] [knots    ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/knots.
> [dochtml] [lfunction] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/lfunctions.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/knots
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/lfunctions
> [dochtml] [libs     ] building [inventory]: targets for 41 source files that 
> are out of date
> [dochtml] [libs     ] updating environment: 41 added, 0 changed, 0 removed
> [dochtml] [logic    ] building [inventory]: targets for 7 source files that 
> are out of date
> [dochtml] [logic    ] updating environment: 7 added, 0 changed, 0 removed
> [dochtml] [matrices ] building [inventory]: targets for 44 source files that 
> are out of date
> [dochtml] [matrices ] updating environment: 44 added, 0 changed, 0 removed
> [dochtml] [logic    ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/logic.
> [dochtml] [libs     ] 
> /usr/lib/python3/dist-packages/sphinx/ext/autodoc/importer.py:175: 
> DeprecationWarning: The Sage wrappers around ppl are now superseded by the 
> standalone pplpy. Please use import 'ppl' instead of 'sage.libs.ppl'.
> [dochtml] [libs     ] See http://trac.sagemath.org/23024 for details.
> [dochtml] [libs     ]   module = import_module(modname, 
> warningiserror=warningiserror)
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/logic
> [dochtml] [libs     ] 
> /usr/lib/python3/dist-packages/sphinx/ext/autodoc/importer.py:175: 
> DeprecationWarning: the module sage.libs.ratpoints is deprecated; use 
> pari.ellratpoints or pari.hyperellratpoints instead
> [dochtml] [libs     ] See http://trac.sagemath.org/24531 for details.
> [dochtml] [libs     ]   module = import_module(modname, 
> warningiserror=warningiserror)
> [dochtml] [libs     ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/libs.
> [dochtml] [matroids ] building [inventory]: targets for 20 source files that 
> are out of date
> [dochtml] [matroids ] updating environment: 20 added, 0 changed, 0 removed
> [dochtml] 
> /<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage_setup/docbuild/__init__.py:1026:
>  DeprecationWarning: The Sage wrappers around ppl are now superseded by the 
> standalone pplpy. Please use import 'ppl' instead of 'sage.libs.ppl'.
> [dochtml] See http://trac.sagemath.org/23024 for details.
> [dochtml]   title = self.get_module_docstring_title(module_name)
> [dochtml] 
> /<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage_setup/docbuild/__init__.py:1026:
>  DeprecationWarning: the module sage.libs.ratpoints is deprecated; use 
> pari.ellratpoints or pari.hyperellratpoints instead
> [dochtml] See http://trac.sagemath.org/24531 for details.
> [dochtml]   title = self.get_module_docstring_title(module_name)
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/libs
> [dochtml] [modabvar ] building [inventory]: targets for 12 source files that 
> are out of date
> [dochtml] [modabvar ] updating environment: 12 added, 0 changed, 0 removed
> [dochtml] [modabvar ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/modabvar.
> [dochtml] [matrices ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/matrices.
> [dochtml] [matroids ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/matroids.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/modabvar
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/matroids
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/matrices
> [dochtml] [modfrm   ] building [inventory]: targets for 22 source files that 
> are out of date
> [dochtml] [modfrm   ] updating environment: 22 added, 0 changed, 0 removed
> [dochtml] [modfrm_he] building [inventory]: targets for 15 source files that 
> are out of date
> [dochtml] [modfrm_he] updating environment: 15 added, 0 changed, 0 removed
> [dochtml] [modmisc  ] building [inventory]: targets for 17 source files that 
> are out of date
> [dochtml] [modmisc  ] updating environment: 17 added, 0 changed, 0 removed
> [dochtml] [modfrm   ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/modfrm.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/modfrm
> [dochtml] [modsym   ] building [inventory]: targets for 27 source files that 
> are out of date
> [dochtml] [modsym   ] updating environment: 27 added, 0 changed, 0 removed
> [dochtml] [modfrm_he] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/modfrm_hecketriangle.
> [dochtml] [modmisc  ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/modmisc.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/modfrm_hecketriangle
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/modmisc
> [dochtml] [monoids  ] building [inventory]: targets for 12 source files that 
> are out of date
> [dochtml] [monoids  ] updating environment: 12 added, 0 changed, 0 removed
> [dochtml] [modules  ] building [inventory]: targets for 40 source files that 
> are out of date
> [dochtml] [modules  ] updating environment: 40 added, 0 changed, 0 removed
> [dochtml] [monoids  ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/monoids.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/monoids
> [dochtml] [modsym   ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/modsym.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/modsym
> [dochtml] [number_fi] building [inventory]: targets for 26 source files that 
> are out of date
> [dochtml] [number_fi] updating environment: 26 added, 0 changed, 0 removed
> [dochtml] [numerical] building [inventory]: targets for 20 source files that 
> are out of date
> [dochtml] [numerical] updating environment: 20 added, 0 changed, 0 removed
> [dochtml] [modules  ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/modules.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/modules
> [dochtml] [padics   ] building [inventory]: targets for 29 source files that 
> are out of date
> [dochtml] [padics   ] updating environment: 29 added, 0 changed, 0 removed
> [dochtml] [numerical] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/numerical.
> [dochtml] [number_fi] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/number_fields.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/numerical
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/number_fields
> [dochtml] [plotting ] building [inventory]: targets for 32 source files that 
> are out of date
> [dochtml] [plotting ] updating environment: 32 added, 0 changed, 0 removed
> [dochtml] [padics   ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/padics.
> [dochtml] [power_ser] building [inventory]: targets for 13 source files that 
> are out of date
> [dochtml] [power_ser] updating environment: 13 added, 0 changed, 0 removed
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/padics
> [dochtml] [power_ser] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/power_series.
> [dochtml] [probabili] building [inventory]: targets for 3 source files that 
> are out of date
> [dochtml] [probabili] updating environment: 3 added, 0 changed, 0 removed
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/power_series
> [dochtml] [probabili] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/probability.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/probability
> [dochtml] [quadratic] building [inventory]: targets for 14 source files that 
> are out of date
> [dochtml] [quadratic] updating environment: 14 added, 0 changed, 0 removed
> [dochtml] [quat_alge] building [inventory]: targets for 3 source files that 
> are out of date
> [dochtml] [quat_alge] updating environment: 3 added, 0 changed, 0 removed
> [dochtml] [quat_alge] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/quat_algebras.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/quat_algebras
> [dochtml] [quadratic] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/quadratic_forms.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/quadratic_forms
> [dochtml] [quivers  ] building [inventory]: targets for 8 source files that 
> are out of date
> [dochtml] [quivers  ] updating environment: 8 added, 0 changed, 0 removed
> [dochtml] [riemannia] building [inventory]: targets for 3 source files that 
> are out of date
> [dochtml] [riemannia] updating environment: 3 added, 0 changed, 0 removed
> [dochtml] [quivers  ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/quivers.
> [dochtml] [riemannia] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/riemannian_geometry.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/quivers
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/riemannian_geometry
> [dochtml] [rings    ] building [inventory]: targets for 15 source files that 
> are out of date
> [dochtml] [rings    ] updating environment: 15 added, 0 changed, 0 removed
> [dochtml] [rings_num] building [inventory]: targets for 14 source files that 
> are out of date
> [dochtml] [rings_num] updating environment: 14 added, 0 changed, 0 removed
> [dochtml] [rings    ] <unknown>:1301: DeprecationWarning: invalid escape 
> sequence \Q
> [dochtml] [rings    ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/rings.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/rings
> [dochtml] [rings_sta] building [inventory]: targets for 14 source files that 
> are out of date
> [dochtml] [rings_sta] updating environment: 14 added, 0 changed, 0 removed
> [dochtml] [rings_num] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/rings_numerical.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/rings_numerical
> [dochtml] [sat      ] building [inventory]: targets for 8 source files that 
> are out of date
> [dochtml] [sat      ] updating environment: 8 added, 0 changed, 0 removed
> [dochtml] [rings_sta] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/rings_standard.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/rings_standard
> [dochtml] [sat      ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/sat.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/sat
> [dochtml] [schemes  ] building [inventory]: targets for 51 source files that 
> are out of date
> [dochtml] [schemes  ] updating environment: 51 added, 0 changed, 0 removed
> [dochtml] [semirings] building [inventory]: targets for 3 source files that 
> are out of date
> [dochtml] [semirings] updating environment: 3 added, 0 changed, 0 removed
> [dochtml] [semirings] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/semirings.
> [dochtml] [schemes  ] <unknown>:609: DeprecationWarning: invalid escape 
> sequence \i
> [dochtml] [schemes  ] <unknown>:819: DeprecationWarning: invalid escape 
> sequence \i
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/semirings
> [dochtml] [schemes  ] <unknown>:1301: DeprecationWarning: invalid escape 
> sequence \Q
> [dochtml] [sets     ] building [inventory]: targets for 18 source files that 
> are out of date
> [dochtml] [sets     ] updating environment: 18 added, 0 changed, 0 removed
> [dochtml] [sets     ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/sets.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/sets
> [dochtml] [stats    ] building [inventory]: targets for 11 source files that 
> are out of date
> [dochtml] [stats    ] updating environment: 11 added, 0 changed, 0 removed
> [dochtml] [schemes  ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/schemes.
> [dochtml] [stats    ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/stats.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/schemes
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/stats
> [dochtml] [structure] building [inventory]: targets for 33 source files that 
> are out of date
> [dochtml] [structure] updating environment: 33 added, 0 changed, 0 removed
> [dochtml] [valuation] building [inventory]: targets for 14 source files that 
> are out of date
> [dochtml] [valuation] updating environment: 14 added, 0 changed, 0 removed
> [dochtml] [structure] 
> /usr/lib/python3/dist-packages/sphinx/ext/autodoc/importer.py:175: 
> DeprecationWarning: the module sage.structure.misc is deprecated
> [dochtml] [structure] See https://trac.sagemath.org/27099 for details.
> [dochtml] [structure]   module = import_module(modname, 
> warningiserror=warningiserror)
> [dochtml] [valuation] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/valuations.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/valuations
> [dochtml] [structure] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/structure.
> [dochtml] 
> /<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage_setup/docbuild/__init__.py:1026:
>  DeprecationWarning: the module sage.structure.misc is deprecated
> [dochtml] See https://trac.sagemath.org/27099 for details.
> [dochtml]   title = self.get_module_docstring_title(module_name)
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/structure
> [dochtml] [plot3d   ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/plot3d.
> [dochtml] Build finished. The built documents can be found in 
> /<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/plot3d
> [dochtml] [plotting ] 
> /<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/contour_plot.py:docstring
>  of sage.plot.contour_plot.region_plot:131: WARNING: Exception occurred in 
> plotting contour_plot-24
> [dochtml] [plotting ]  from 
> /<<PKGBUILDDIR>>/sage/src/doc/en/reference/plotting/sage/plot/contour_plot.rst:
> [dochtml] [plotting ] Traceback (most recent call last):
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/sphinxext/plot_directive.py", line 
> 484, in run_code
> [dochtml] [plotting ]     exec(code, ns)
> [dochtml] [plotting ]   File "<string>", line 4, in <module>
> [dochtml] [plotting ]   File "<string>", line 28, in sphinx_plot
> [dochtml] [plotting ]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/graphics.py",
>  line 2675, in matplotlib
> [dochtml] [plotting ]     g._render_on_subplot(subplot)
> [dochtml] [plotting ]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/contour_plot.py",
>  line 219, in _render_on_subplot
> [dochtml] [plotting ]     cb = colorbar.Colorbar(cax, CSF, **kwds)
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/colorbar.py", line 1220, in 
> __init__
> [dochtml] [plotting ]     ColorbarBase.__init__(self, ax, **kw)
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/colorbar.py", line 458, in __init__
> [dochtml] [plotting ]     cbook._check_in_list(
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/cbook/__init__.py", line 2143, in 
> _check_in_list
> [dochtml] [plotting ]     raise ValueError(
> [dochtml] [plotting ] ValueError: None is not a valid value for spacing; 
> supported values are 'uniform', 'proportional'
> [dochtml] [plotting ] 
> /<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/contour_plot.py:docstring
>  of sage.plot.contour_plot.region_plot:159: WARNING: Exception occurred in 
> plotting contour_plot-25
> [dochtml] [plotting ]  from 
> /<<PKGBUILDDIR>>/sage/src/doc/en/reference/plotting/sage/plot/contour_plot.rst:
> [dochtml] [plotting ] Traceback (most recent call last):
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/sphinxext/plot_directive.py", line 
> 484, in run_code
> [dochtml] [plotting ]     exec(code, ns)
> [dochtml] [plotting ]   File "<string>", line 4, in <module>
> [dochtml] [plotting ]   File "<string>", line 28, in sphinx_plot
> [dochtml] [plotting ]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/graphics.py",
>  line 2675, in matplotlib
> [dochtml] [plotting ]     g._render_on_subplot(subplot)
> [dochtml] [plotting ]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/contour_plot.py",
>  line 219, in _render_on_subplot
> [dochtml] [plotting ]     cb = colorbar.Colorbar(cax, CSF, **kwds)
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/colorbar.py", line 1220, in 
> __init__
> [dochtml] [plotting ]     ColorbarBase.__init__(self, ax, **kw)
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/colorbar.py", line 458, in __init__
> [dochtml] [plotting ]     cbook._check_in_list(
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/cbook/__init__.py", line 2143, in 
> _check_in_list
> [dochtml] [plotting ]     raise ValueError(
> [dochtml] [plotting ] ValueError: None is not a valid value for spacing; 
> supported values are 'uniform', 'proportional'
> [dochtml] [plotting ] 
> /<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/contour_plot.py:docstring
>  of sage.plot.contour_plot.region_plot:187: WARNING: Exception occurred in 
> plotting contour_plot-26
> [dochtml] [plotting ]  from 
> /<<PKGBUILDDIR>>/sage/src/doc/en/reference/plotting/sage/plot/contour_plot.rst:
> [dochtml] [plotting ] Traceback (most recent call last):
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/sphinxext/plot_directive.py", line 
> 484, in run_code
> [dochtml] [plotting ]     exec(code, ns)
> [dochtml] [plotting ]   File "<string>", line 5, in <module>
> [dochtml] [plotting ]   File "<string>", line 28, in sphinx_plot
> [dochtml] [plotting ]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/graphics.py",
>  line 2675, in matplotlib
> [dochtml] [plotting ]     g._render_on_subplot(subplot)
> [dochtml] [plotting ]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/contour_plot.py",
>  line 219, in _render_on_subplot
> [dochtml] [plotting ]     cb = colorbar.Colorbar(cax, CSF, **kwds)
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/colorbar.py", line 1220, in 
> __init__
> [dochtml] [plotting ]     ColorbarBase.__init__(self, ax, **kw)
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/colorbar.py", line 458, in __init__
> [dochtml] [plotting ]     cbook._check_in_list(
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/cbook/__init__.py", line 2143, in 
> _check_in_list
> [dochtml] [plotting ]     raise ValueError(
> [dochtml] [plotting ] ValueError: None is not a valid value for spacing; 
> supported values are 'uniform', 'proportional'
> [dochtml] [plotting ] 
> /<<PKGBUILDDIR>>/sage/src/doc/en/reference/plotting/sage/plot/contour_plot.rst:1217:
>  WARNING: Exception occurred in plotting contour_plot-28
> [dochtml] [plotting ]  from 
> /<<PKGBUILDDIR>>/sage/src/doc/en/reference/plotting/sage/plot/contour_plot.rst:
> [dochtml] [plotting ] Traceback (most recent call last):
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/sphinxext/plot_directive.py", line 
> 484, in run_code
> [dochtml] [plotting ]     exec(code, ns)
> [dochtml] [plotting ]   File "<string>", line 5, in <module>
> [dochtml] [plotting ]   File "<string>", line 28, in sphinx_plot
> [dochtml] [plotting ]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/graphics.py",
>  line 2675, in matplotlib
> [dochtml] [plotting ]     g._render_on_subplot(subplot)
> [dochtml] [plotting ]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/contour_plot.py",
>  line 219, in _render_on_subplot
> [dochtml] [plotting ]     cb = colorbar.Colorbar(cax, CSF, **kwds)
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/colorbar.py", line 1220, in 
> __init__
> [dochtml] [plotting ]     ColorbarBase.__init__(self, ax, **kw)
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/colorbar.py", line 458, in __init__
> [dochtml] [plotting ]     cbook._check_in_list(
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/cbook/__init__.py", line 2143, in 
> _check_in_list
> [dochtml] [plotting ]     raise ValueError(
> [dochtml] [plotting ] ValueError: None is not a valid value for spacing; 
> supported values are 'uniform', 'proportional'
> [dochtml] [plotting ] 
> /<<PKGBUILDDIR>>/sage/src/doc/en/reference/plotting/sage/plot/contour_plot.rst:1248:
>  WARNING: Exception occurred in plotting contour_plot-29
> [dochtml] [plotting ]  from 
> /<<PKGBUILDDIR>>/sage/src/doc/en/reference/plotting/sage/plot/contour_plot.rst:
> [dochtml] [plotting ] Traceback (most recent call last):
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/sphinxext/plot_directive.py", line 
> 484, in run_code
> [dochtml] [plotting ]     exec(code, ns)
> [dochtml] [plotting ]   File "<string>", line 6, in <module>
> [dochtml] [plotting ]   File "<string>", line 28, in sphinx_plot
> [dochtml] [plotting ]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/graphics.py",
>  line 2675, in matplotlib
> [dochtml] [plotting ]     g._render_on_subplot(subplot)
> [dochtml] [plotting ]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/contour_plot.py",
>  line 219, in _render_on_subplot
> [dochtml] [plotting ]     cb = colorbar.Colorbar(cax, CSF, **kwds)
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/colorbar.py", line 1220, in 
> __init__
> [dochtml] [plotting ]     ColorbarBase.__init__(self, ax, **kw)
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/colorbar.py", line 458, in __init__
> [dochtml] [plotting ]     cbook._check_in_list(
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/cbook/__init__.py", line 2143, in 
> _check_in_list
> [dochtml] [plotting ]     raise ValueError(
> [dochtml] [plotting ] ValueError: None is not a valid value for spacing; 
> supported values are 'uniform', 'proportional'
> [dochtml] [plotting ] 
> /<<PKGBUILDDIR>>/sage/src/doc/en/reference/plotting/sage/plot/contour_plot.rst:1279:
>  WARNING: Exception occurred in plotting contour_plot-30
> [dochtml] [plotting ]  from 
> /<<PKGBUILDDIR>>/sage/src/doc/en/reference/plotting/sage/plot/contour_plot.rst:
> [dochtml] [plotting ] Traceback (most recent call last):
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/sphinxext/plot_directive.py", line 
> 484, in run_code
> [dochtml] [plotting ]     exec(code, ns)
> [dochtml] [plotting ]   File "<string>", line 5, in <module>
> [dochtml] [plotting ]   File "<string>", line 28, in sphinx_plot
> [dochtml] [plotting ]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/graphics.py",
>  line 2675, in matplotlib
> [dochtml] [plotting ]     g._render_on_subplot(subplot)
> [dochtml] [plotting ]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/contour_plot.py",
>  line 217, in _render_on_subplot
> [dochtml] [plotting ]     cb = colorbar.Colorbar(cax, CS, **kwds)
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/colorbar.py", line 1220, in 
> __init__
> [dochtml] [plotting ]     ColorbarBase.__init__(self, ax, **kw)
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/colorbar.py", line 458, in __init__
> [dochtml] [plotting ]     cbook._check_in_list(
> [dochtml] [plotting ]   File 
> "/usr/lib/python3/dist-packages/matplotlib/cbook/__init__.py", line 2143, in 
> _check_in_list
> [dochtml] [plotting ]     raise ValueError(
> [dochtml] [plotting ] ValueError: None is not a valid value for spacing; 
> supported values are 'uniform', 'proportional'
> [dochtml] [plotting ] The inventory files are in 
> ../debian/build/usr/share/doc/sagemath/inventory/en/reference/plotting.
> [dochtml] Traceback (most recent call last):
> [dochtml]   File "/usr/lib/python3.8/runpy.py", line 193, in 
> _run_module_as_main
> [dochtml]     return _run_code(code, main_globals, None,
> [dochtml]   File "/usr/lib/python3.8/runpy.py", line 86, in _run_code
> [dochtml]     exec(code, run_globals)
> [dochtml]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage_setup/docbuild/sphinxbuild.py",
>  line 328, in <module>
> [dochtml]     runsphinx()
> [dochtml]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage_setup/docbuild/sphinxbuild.py",
>  line 317, in runsphinx
> [dochtml]     sys.stderr.raise_errors()
> [dochtml]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage_setup/docbuild/sphinxbuild.py",
>  line 252, in raise_errors
> [dochtml]     raise OSError(self._error)
> [dochtml] OSError: 
> /<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage/plot/contour_plot.py:docstring
>  of sage.plot.contour_plot.region_plot:131: WARNING: Exception occurred in 
> plotting contour_plot-24
> [dochtml] Error building the documentation.
> [dochtml] Traceback (most recent call last):
> [dochtml]   File "/usr/lib/python3.8/runpy.py", line 193, in 
> _run_module_as_main
> [dochtml]     return _run_code(code, main_globals, None,
> [dochtml]   File "/usr/lib/python3.8/runpy.py", line 86, in _run_code
> [dochtml]     exec(code, run_globals)
> [dochtml]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage_setup/docbuild/__main__.py",
>  line 2, in <module>
> [dochtml]     main()
> [dochtml]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage_setup/docbuild/__init__.py",
>  line 1698, in main
> [dochtml]     builder()
> [dochtml]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage_setup/docbuild/__init__.py",
>  line 305, in _wrapper
> [dochtml]     getattr(get_builder(document), 'inventory')(*args, **kwds)
> [dochtml]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage_setup/docbuild/__init__.py",
>  line 530, in _wrapper
> [dochtml]     self._build_everything_except_bibliography(lang, format, *args, 
> **kwds)
> [dochtml]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage_setup/docbuild/__init__.py",
>  line 516, in _build_everything_except_bibliography
> [dochtml]     build_many(build_ref_doc, non_references)
> [dochtml]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage_setup/docbuild/__init__.py",
>  line 258, in build_many
> [dochtml]     _build_many(target, args, processes=NUM_THREADS)
> [dochtml]   File 
> "/<<PKGBUILDDIR>>/debian/build/usr/lib/python3/dist-packages/sage_setup/docbuild/utils.py",
>  line 283, in build_many
> [dochtml]     raise worker_exc.original_exception
> [dochtml] subprocess.CalledProcessError: Command '['python3', '-um', 
> 'sage_setup.docbuild.sphinxbuild', '-N', '-b', 'inventory', '-d', 
> '/<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/doctrees/en/reference/plotting',
>  '-D', 'multidoc_first_pass=1', 
> '/<<PKGBUILDDIR>>/sage/src/doc/en/reference/plotting', 
> '/<<PKGBUILDDIR>>/debian/build/usr/share/doc/sagemath/inventory/en/reference/plotting']'
>  returned non-zero exit status 1.
> make[5]: *** [Makefile:2020: doc-html] Error 1

The full build log is available from:
   http://qa-logs.debian.net/2020/03/21/sagemath_9.0-2_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.

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