build

Explaining diffs of `Merge<T>` (structured conflicts part 1) #13218

Job	Run time
Build jj-lib without Git support	43s
build (ubuntu-latest)	4m 25s
Check protos	31s
Check formatting	16s
build (macos-14)	3m 39s
build (windows-latest)	8m 57s
build (ubuntu-latest, --all-features)	5m 21s
cargo-deny (advisories)	24s
Clippy check	2m 29s
Check that MkDocs can build the docs	22s
Check that MkDocs can build the docs with Poetry 1.8	22s
cargo-deny (bans licenses sources)	23s
	27m 52s

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