build

working copy: return `Box<dyn LockedWorkingCopy>` from `start_mutatio… #7290

Job	Run time
build (ubuntu-latest)	7m 32s
cargo-deny (advisories)	28s
build (macos-13)	4m 32s
cargo-deny (bans licenses sources)	28s
build (windows-latest)	7m 54s
Clippy check	4m 45s
Check protos	49s
build (ubuntu-latest, --all-features)	9m 20s
Check that MkDocs can build the docs	27s
Check formatting	16s
	36m 31s

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