Merge pull request #350 from nyx-space/bug/gh-349-duration-from-str-n… #630

Job	Run time
Check	12s
Lints	24s
Coverage	49s
Test Suite (ubuntu-latest, MSRV)	3m 17s
no-std build (aarch64-unknown-none)	26s
no-std build (thumbv6m-none-eabi)	22s
Test Suite (ubuntu-latest, stable)	2m 55s
Test Suite (macos-latest, MSRV)	2m 17s
Test Suite (macos-latest, stable)	1m 45s
Test Suite (windows-latest, MSRV)	9m 48s
Test Suite (windows-latest, stable)	9m 24s
Release	0s
	31m 39s

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