Reusable module cache #6635

Job	Run time
rust-check-git-rev-deps	16s
fmt	17s
cargo-deny (advisories)	41s
build (gcc, current)	1h 18m 12s
cargo-deny (bans licenses sources)	1m 0s
build (gcc, current, --check-test-tx-meta)	1h 3m 23s
build (gcc, next)	58m 0s
build (gcc, next, --check-test-tx-meta)	1h 8m 40s
build (clang, current)	1h 3m 39s
build (clang, current, --check-test-tx-meta)	55m 12s
build (clang, next)	1h 6m 29s
build (clang, next, --check-test-tx-meta)	57m 7s
complete	1s
	8h 32m 57s

Provide feedback