Don't catch asynchronous exceptions #53

Job	Run time
arm (arm32v7)	10m 39s
emulated (s390x)	47s
arm (arm64v8)	8m 32s
darwin_arm (self-hosted, macOS, ARM64, 8.10.7)	1h 29m 25s
emulated (ppc64le)	49s
build (ubuntu-latest, 8.6, 3.8.1.0)	10m 55s
darwin_arm (self-hosted, macOS, ARM64, 9.2.8)	2h 40m 32s
build (ubuntu-latest, 8.8, 3.8.1.0)	12m 18s
freebsd (self-hosted, FreeBSD, X64, 9.4.8)	6h 0m 7s
darwin_arm (self-hosted, macOS, ARM64, 9.4.7)	24m 2s
i386	9m 13s
build (ubuntu-latest, 8.10, 3.8.1.0)	11m 23s
freebsd (self-hosted, FreeBSD, X64, 9.6.4)	6m 9s
build (ubuntu-latest, 9.0, 3.8.1.0)	10m 35s
build (ubuntu-latest, 9.2, 3.8.1.0)	8m 51s
build (ubuntu-latest, 9.4, 3.8.1.0)	9m 36s
build (ubuntu-latest, 9.6, 3.8.1.0)	12m 44s
build (ubuntu-latest, 9.8, 3.8.1.0)	9m 40s
build (macOS-12, 9.4, 3.8.1.0)	47m 43s
build (macOS-12, 9.6, 3.8.1.0)	2h 7m 6s
build (windows-latest, 9.4, 3.8.1.0)	46m 56s
build (windows-latest, 9.6, 3.8.1.0)	1h 4m 44s
	17h 22m 46s

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