Merge pull request #586 from Oscar-Pepper/checkmate_fail_on_warning #1120

Job	Run time
Build test artifacts	5m 14s
Reject trailing whitespace	4s
cargo-checkmate / Cache checkmate	4s
cargo-checkmate / Cargo checkmate (build)	8m 24s
cargo-checkmate / Cargo checkmate (check)	5m 5s
cargo-checkmate / Cargo checkmate (clippy)	6m 3s
cargo-checkmate / Cargo checkmate (doc)	7m 39s
cargo-checkmate / Cargo checkmate (format)	10s
Run tests (1)	5m 23s
Run tests (2)	6m 50s
Run tests (3)	4m 0s
Run tests (4)	5m 37s
Run tests (5)	8m 8s
Run tests (6)	8m 12s
Run tests (7)	4m 48s
Run tests (8)	4m 1s
	1h 19m 42s

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