Fix ambiguous methods #460

Job	Run time
Check (stable)	14s
Rustfmt (stable)	5s
Clippy (stable)	35s
Miri	1m 16s
Test Suite	2m 52s
Test Suite (stable)	1m 12s
Test Suite (--no-default-features)	2m 40s
Test Suite (ubuntu-latest)	59s
Test Suite (stable, --no-default-features)	56s
Test Suite (--no-default-features --features track-caller)	2m 44s
Test Suite (windows-latest)	3m 6s
Test Suite (stable, --no-default-features --features track-caller)	59s
Test Suite (--no-default-features --features auto-install)	2m 45s
Test Suite (stable, --no-default-features --features auto-install)	53s
Test Suite (macOS-latest)	51s
Test Suite (stable, --features pyo3)	1m 2s
Test Suite (stable, --all-features)	1m 11s
Test Suite (beta)	1m 7s
Test Suite (beta, --no-default-features)	59s
Test Suite (beta, --no-default-features --features track-caller)	1m 4s
Test Suite (beta, --no-default-features --features auto-install)	1m 0s
Test Suite (beta, --features pyo3)	1m 7s
Test Suite (beta, --all-features)	1m 12s
Test Suite (nightly)	1m 7s
Test Suite (nightly, --no-default-features)	1m 6s
Test Suite (nightly, --no-default-features --features track-caller)	1m 8s
Test Suite (nightly, --no-default-features --features auto-install)	1m 3s
Test Suite (nightly, --features pyo3)	1m 7s
Test Suite (nightly, --all-features)	1m 10s
	37m 30s

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