test: use a different timestamp for the updated file
In the test we want to trigger a write after the underlying dirstate changed. To
do so, we need a write. And as we are about to make dirstate update smarter we
need to meddle with the script a bit to make sure there will be a write.
Differential Revision: https://phab.mercurial-scm.org/D11793
#require cargo test-repo
$ . "$TESTDIR/helpers-testrepo.sh"
$ cd "$TESTDIR"/../rust
Check if Cargo.lock is up-to-date. Will fail with a 101 error code if not.
$ cargo check --locked --all --quiet
However most CIs will run `cargo build` or similar before running the tests, so we need to check if it was modified
$ testrepohg diff Cargo.lock