dirstate-v2: no longer register the data-file during transaction If the data file change during the transaction, we cannot truncate it. The content of the file itself is fine as it will get backed up at the same time as the docket. Leaving the trailing data at the end of failed transaction is fine. The dirstate-v2 format supports it. The dead data will simply we written over if necessary.

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#require cargo test-repo

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  $ . "$TESTDIR/helpers-testrepo.sh"

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  $ cd "$TESTDIR"/../rust

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Check if Cargo.lock is up-to-date. Will fail with a 101 error code if not.

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  $ cargo check --locked --all --quiet

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However most CIs will run `cargo build` or similar before running the tests, so we need to check if it was modified

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  $ testrepohg diff Cargo.lock