mirgen: lower `finally` #5600

Job	Run time
Provide additional context for the workflow	1s
Build release binaries (Linux)	6m 48s
Build release binaries (macOS)	6m 42s
Build release binaries (macOS (M1))	2m 48s
Build release binaries (Windows)	11m 52s
Build source archive	2m 32s
Build docs and release artifacts (Linux)	7m 8s
Test the compiler and stdlib (Linux, batch #0)	5m 50s
Build docs and release artifacts (macOS)	7m 3s
Build and test tooling (Linux)	3m 5s
Test the compiler and stdlib (Linux, batch #1)	5m 20s
Build docs and release artifacts (macOS (M1))	3m 50s
Build and test tooling (macOS)	3m 29s
Test the compiler and stdlib (macOS, batch #0)	5m 47s
Build docs and release artifacts (Windows)	12m 40s
Build and test tooling (macOS (M1))	2m 13s
Test the compiler and stdlib (macOS, batch #1)	5m 52s
Build and test tooling (Windows)	3m 25s
Test the compiler and stdlib (macOS (M1), batch #0)	3m 37s
Test the compiler and stdlib (macOS (M1), batch #1)	3m 13s
Test the compiler and stdlib (Windows, batch #0)	10m 22s
Test the compiler and stdlib (Windows, batch #1)	10m 14s
Build release artifacts from source archive (Linux)	10m 33s
Build release artifacts from source archive (macOS)	9m 3s
Build release artifacts from source archive (macOS (M1))	4m 43s
Build release artifacts from source archive (Windows)	17m 38s
Test release artifacts	30s
All check passed	1s
	2h 46m 19s

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