upgrade: capitalize the `deficiency` constant I am reworking this code and moving to the current naming scheme help readability. Differential Revision: https://phab.mercurial-scm.org/D9473

tests: set old git default branch name for compatibility Git's default branch name has changed on my machine (from "master" to "main"). Let's set the old name in our tests so we're compatible with both defaults (and maybe still compatible with Git versions that don't know about the config option). Differential Revision: https://phab.mercurial-scm.org/D9470

heptapod-ci: automatically refresh existing phabricator Diff on push If a changeset have been submitted to Phabricator and a new version is pushed to heptapod, we should refresh the state on Phabricator. If we do not do this, they are a risk of an older version being applied from Phabricator. In this situation content-divergence will be (rightfully) detected by evolution. We only refresh the Diff if the test pass, to avoid updating Phabricator with broken content. Differential Revision: https://phab.mercurial-scm.org/D9451

contrib: add a small script to refresh all diff in the current stack This will be useful to introduce automatic refresh through heptapod. Differential Revision: https://phab.mercurial-scm.org/D9460

tests: conditionalize return code on chg in test-config.t If there is any error while reading config, chg just returns 255 instead of 30. It seems to me that we cannot conditionalize only return codes in output using trailing `(chg !)` and hence used testcases. The test was failing with chg but after this patch, it now passes. Differential Revision: https://phab.mercurial-scm.org/D9463

tests: update test-chg.t with output change Since this part of tests is only run with chg, hence it didn't get updated when the error message changed. Differential Revision: https://phab.mercurial-scm.org/D9414

rust-format: pin the formatted to a specific nightly version Version 1.50 change the way rust-format behave. We pin the version for now, we can figure out something better later.

copies: clarify the return of _merge_copies_dict I misused that function twice in the past few days, so lets clarify the API. Differential Revision: https://phab.mercurial-scm.org/D9418

copies: avoid unwanted side effect from one branch to another Without this copy, change in a one descendant branch (With "remove" change only) could affect computation on another descendant branches. This was not caugh by the test because the test graph are "too simple". I started writing more test in that regards, but I a submitting this changes earlier because I want to get more code landed to allow other optimisation work to happens. Differential Revision: https://phab.mercurial-scm.org/D9416

rhg: use `format_bytes!` for error messages This change also includes a formatting changing with the new `rustfmt` version, but I'm expecting it to have already been applied in another patch by the time this lands. Differential Revision: https://phab.mercurial-scm.org/D9407