Fix broken tests #84

Job	Run time
no_std Check	50s
Check (stable, --no-default-features)	21s
Check (stable, --all-features)	8s
Check (beta, --no-default-features)	20s
Check (beta, --all-features)	19s
Check (nightly, --no-default-features)	17s
Check (nightly, --all-features)	15s
Lints (stable, --no-default-features)	12s
Lints (stable, --all-features)	11s
Lints (beta, --no-default-features)	17s
Lints (beta, --all-features)	16s
Lints (nightly, --no-default-features)	25s
Lints (nightly, --all-features)	23s
Test Suite (stable, --no-default-features)	28s
Test Suite (stable, --all-features)	26s
Test Suite (beta, --no-default-features)	45s
Test Suite (beta, --all-features)	43s
Test Suite (nightly, --no-default-features)	34s
Test Suite (nightly, --all-features)	38s
	7m 48s

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