Fix miri validation errors through now stricter provenance #245

Job	Run time
Test Suite (stable)	55s
Test Suite (stable, --no-default-features)	57s
Test Suite (stable, --features track-caller)	46s
Test Suite (stable, --features pyo3)	1m 3s
Test Suite (stable, --features auto-install)	56s
Test Suite (stable, --all-features)	48s
Test Suite (beta)	49s
Test Suite (beta, --no-default-features)	47s
Test Suite (beta, --features track-caller)	44s
Test Suite (beta, --features pyo3)	47s
Test Suite (beta, --features auto-install)	45s
Test Suite (beta, --all-features)	50s
Test Suite (nightly)	1m 8s
Test Suite (nightly, --no-default-features)	58s
Test Suite (nightly, --features track-caller)	1m 14s
Test Suite (nightly, --features pyo3)	59s
Test Suite (nightly, --features auto-install)	54s
Test Suite (nightly, --all-features)	1m 0s
Check (stable)	20s
Clippy (stable)	15s
Rustfmt (stable)	17s
Miri	1m 26s
Test Suite	2m 6s
Test Suite (--no-default-features)	2m 11s
Test Suite (--features track-caller)	2m 14s
Test Suite (--features auto-install)	2m 23s
Test Suite (ubuntu-latest)	51s
Test Suite (windows-latest)	1m 50s
Test Suite (macOS-latest)	1m 12s
	31m 25s

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