Merge pull request #1087 from jayvdb/add-msrv #1205

Job	Run time
Build with no-std	14s
Checking fmt and docs	30s
Check io_safety feature (ubuntu-latest)	11s
Build and test (ubuntu-latest, nightly)	1m 16s
Check io_safety feature (windows-latest)	1m 4s
Build and test (ubuntu-latest, beta)	1m 44s
Check tokio02 feature	23s
Check wasm targets (nightly)	2m 44s
Build and test (ubuntu-latest, stable)	1m 50s
Check wasm targets (beta)	2m 47s
Build and test (windows-latest, nightly)	2m 31s
Cross compile (i686-unknown-linux-gnu)	1m 54s
Check wasm targets (stable)	2m 45s
Build and test (windows-latest, beta)	2m 44s
Cross compile (powerpc-unknown-linux-gnu)	2m 1s
Build and test (windows-latest, stable)	2m 57s
Cross compile (powerpc64-unknown-linux-gnu)	2m 8s
Build and test (macOS-latest, nightly)	1m 11s
Cross compile (arm-linux-androideabi)	3m 29s
Build and test (macOS-latest, beta)	1m 24s
Build and test (macOS-latest, stable)	1m 11s
	36m 58s

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