We never upgraded hgssh to Mercurial 4.2. Let's get that done.

I'm still piecing patches together. The test environment isn't in a happy state and there appears to be some behavioral changes with the upgrade and I need to be sure tests are happy. This is what happens when we don't pay down technical debt with automated testing :/

I'm still working on this. But there's enough here to start reviewing. A test failure after upgrade led me to discover https://bz.mercurial-scm.org/show_bug.cgi?id=5648. It took me a while to realize this was a Mercurial bug, ugh.

Comment on attachment 8893173 [details] reviewboard: support calling showlist() with Mercurial 4.2 (bug 1385979); https://reviewboard.mozilla.org/r/164182/#review169588

Comment on attachment 8893175 [details] autoland: update test output to match current; https://reviewboard.mozilla.org/r/164186/#review169594

Comment on attachment 8893176 [details] bzexport: prefer using non-MQ export mechanism; https://reviewboard.mozilla.org/r/164188/#review169596

Comment on attachment 8893178 [details] global: upgrade all Mercurial 4.2 installs to 4.2.2 (bug 1385979); https://reviewboard.mozilla.org/r/164192/#review169598

Comment on attachment 8893179 [details] testing: install Mercurial 4.2.2 in testing environment (1385979); https://reviewboard.mozilla.org/r/164194/#review169600

Comment on attachment 8893180 [details] testing: upgrade Mercurial in main virtualenv to 4.2 (bug 1385979); https://reviewboard.mozilla.org/r/164196/#review169602

Comment on attachment 8893181 [details] git: set ui.promptecho in test; https://reviewboard.mozilla.org/r/164198/#review169604

Comment on attachment 8893182 [details] git: update test output to reflect reality; https://reviewboard.mozilla.org/r/164200/#review169606

Comment on attachment 8893183 [details] ansible/hg-web: upgrade all Mercurial packages to 4.2.2 (bug 1385979); https://reviewboard.mozilla.org/r/164202/#review169608

Pushed by gszorc@mozilla.com: https://hg.mozilla.org/hgcustom/version-control-tools/rev/eea1197bbf6c reviewboard: support calling showlist() with Mercurial 4.2 ; r=glob https://hg.mozilla.org/hgcustom/version-control-tools/rev/a813aae845c9 global: upgrade all Mercurial 4.2 installs to 4.2.2 ; r=glob https://hg.mozilla.org/hgcustom/version-control-tools/rev/66cec64dfe0c testing: install Mercurial 4.2.2 in testing environment ; r=glob https://hg.mozilla.org/hgcustom/version-control-tools/rev/1c516f4943d5 testing: upgrade Mercurial in main virtualenv to 4.2.2 ; r=glob https://hg.mozilla.org/hgcustom/version-control-tools/rev/da574938ae1e ansible/hg-web: upgrade all Mercurial packages to 4.2.2 ; r=glob https://hg.mozilla.org/hgcustom/version-control-tools/rev/aaaf8ac5c695 ansible/hg-ssh: upgrade all Mercurial packages to 4.2.2 https://hg.mozilla.org/hgcustom/version-control-tools/rev/c6638e55e3cc ansible: install Mercurial 4.2.2 in mercurial-yum role

Since glob won't be around for the rest of the week, I went ahead and finished the series via self-review. Changes have been deployed and we're now running 4.2.2 everywhere on hg.mozilla.org.