tests: update test-debugcommands.t stack trace checks for python3.9 Python 3.9 prints a complete filepath in more cases, so we need to handle that in our test output. Since we don't really care *that* much about the specific path formatting here, just use globbing. Differential Revision: https://phab.mercurial-scm.org/D8329

tests: update test-archive.t expectations for python3.9 changes Sigh. Differential Revision: https://phab.mercurial-scm.org/D8328

setup: relax -Werror for declaration-after-statement on Python 3.9 It turns out Python 3.9 introduces such declarations in the headers, eg cpython/abstract.h:189:5: error: ISO C90 forbids mixed declarations and code [-Werror=declaration-after-statement] so we have to be more relaxed when compiling for 3.9. Differential Revision: https://phab.mercurial-scm.org/D8327

py3: require values in changelog extras to be bytes I don't know what happened here because b436059c1cca (py3: use pycompat.bytestr() on extra values because it can be int, 2019-02-05) came about b44a47214122 (py3: use string for "close" value in commit extras, 2018-02-11). Whatever happened, we shouldn't need to convert the values to bytes now. It's better to not convert because that might cover up bugs where someone sets a unicode value in the extras and that works until the unicode value happens to contain non-ascii (at which point it will fail because `bytestr()` expects its argument to be ascii if it's unicode). Differential Revision: https://phab.mercurial-scm.org/D8332

py3: make setup.py's hgcommand() consistently return bytes Before this patch, it returned unicode when the command failed. That made e.g. `make local PYTHON=python3` fail on an obsolete commit. Differential Revision: https://phab.mercurial-scm.org/D8331

pvec: drop an unused `from __future__ import division` This module only uses the `//` operator (for integer division). Differential Revision: https://phab.mercurial-scm.org/D8326

py3: use integer division in histedit Histedit uses the `/` operator, which does type conversion to float in Python 3 instead of integer division likeon Python 2. Let's preserve the Python 2 behavior by importing and using the `//` operator. Differential Revision: https://phab.mercurial-scm.org/D8324

rust: update README to reflect use of `regex` crate Differential Revision: https://phab.mercurial-scm.org/D8325

rust: update all dependencies We do this periodically to say up to date. No major versions were crossed this time per se, but the `rand` is still in v0, and their 0.7x series broke three things: - Some distribution-related elements were moved to a separate crate, flashing a deprecation warning - The `LogNormal::new` associated function now returns a `Result` - Certain RNGs were updated to sample a `u32` instead of `usize` when their upper-bound is less than `u32::MAX` for better portability, which changed the output for 2 tests. Moreover, the recent use of the `regex` crate for ignore mechanisms prompted some benchmarking that revealed that `regex` was slower at compiling big regex than `Re2`. The author of `regex` was very quick to discover an optimization that yielded a 30% improvement. It's still slower than `Re2` in that regard, but less so in the 1.3.6 release. Differential Revision: https://phab.mercurial-scm.org/D8320

rust: update micro-timer dependency The new version uses a much more robust technique and should remove any existing risk of bad compiler error or performance hit. Differential Revision: https://phab.mercurial-scm.org/D8319