Public bug reported:
A failing rust-datatest-stable autopkgtest is blocking rust-defaults
migration to 1.93.
rust-datatest-stable autopkgtests don't work with versions of Rust newer
than 1.92 because in 1.93 upstream Rust changed the following line in
compiler/rustc_errors/src/emitter.rs:
- for text in normalize_whitespace(&text).lines() {
+ for text in normalize_whitespace(&text).split('\n') {
This change causes messages to yield an empty item for a trailing \n,
meaning that rust-datatest-stable's autopkgtests, which expect exact
matches, fail due to an extra empty newline in the message:
215s [0mtest [0m[1mtests/compile-fail/old-format.rs[0m ...
[0m[1m[31mmismatch
215s [0m
215s [0m[1m[34mEXPECTED:
215s [0m[34m┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈
215s [0m[34merror: this format is no longer supported -- please switch to
specifying as:
215s [0m[34m
215s [0m[34m datatest_stable::harness! {
215s [0m[34m { test = foo, root = "path1", pattern = r"^.*/*$" },
215s [0m[34m { test = bar::baz, root = "path2", pattern = r"^.*/*$"
},
215s [0m[34m }
215s [0m[34m
215s [0m[34m note: patterns are now evaluated relative to the provided
root, not to the crate root
215s [0m[34m --> tests/compile-fail/old-format.rs:1:1
215s [0m[34m |
215s [0m[34m1 | datatest_stable::harness!(foo, "path1", r"^.*/*$", bar::baz,
"path2", r"^.*/*$");
215s [0m[34m |
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
215s [0m[34m |
215s [0m[34m = note: this error originates in the macro
`datatest_stable::harness` (in Nightly builds, run with -Z macro-backtrace for
more info)
215s [0m[34m┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈
215s [0m
215s [0m[1m[31mACTUAL OUTPUT:
215s [0m[31m┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈
215s [0m[31merror: this format is no longer supported -- please switch to
specifying as:
215s [0m[31m
215s [0m[31m datatest_stable::harness! {
215s [0m[31m { test = foo, root = "path1", pattern = r"^.*/*$" },
215s [0m[31m { test = bar::baz, root = "path2", pattern = r"^.*/*$"
},
215s [0m[31m }
215s [0m[31m
215s [0m[31m note: patterns are now evaluated relative to the provided
root, not to the crate root
215s [0m[31m
215s [0m[31m --> tests/compile-fail/old-format.rs:1:1
215s [0m[31m |
215s [0m[31m1 | datatest_stable::harness!(foo, "path1", r"^.*/*$", bar::baz,
"path2", r"^.*/*$");
215s [0m[31m |
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
** Affects: rust-datatest-stable (Ubuntu)
Importance: Undecided
Assignee: Max Gilmour (maxgmr)
Status: In Progress
** Tags: update-excuse
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https://bugs.launchpad.net/bugs/2146373
Title:
autopkgtests don't work with Rust 1.93+
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