pg_upgrade was recently broken for use upgrading from a system with adminpack installed.
Breaking commit is: commit 30982be4e5019684e1772dd9170aaa53f5a8e894 Author: Peter Eisentraut <pete...@gmx.net> Integrate pg_upgrade_support module into backend from pg_upgrade_dump_12870.log pg_restore: creating EXTENSION "adminpack" pg_restore: creating COMMENT "EXTENSION "adminpack"" pg_restore: [archiver (db)] Error while PROCESSING TOC: pg_restore: [archiver (db)] Error from TOC entry 2806; 0 0 COMMENT EXTENSION "adminpack" pg_restore: [archiver (db)] could not execute query: ERROR: extension "adminpack" does not exist Command was: COMMENT ON EXTENSION "adminpack" IS 'administrative functions for PostgreSQL'; I get the same error whether the source database is 9.2.10 or 9.5.HEAD. Cheers, Jeff