Fix miri validation errors through now stricter provenance #249

Job	Run time
Test Platform Matrix (ubuntu-latest)	48s
Test Suite Matrix (stable)	47s
Miri	1m 14s
Test Platform Matrix (windows-latest)	4m 0s
Test Suite Matrix (stable, --no-default-features)	49s
Clippy (stable)	15s
Test Platform Matrix (macOS-latest)	57s
Test Suite Matrix (stable, --features track-caller)	40s
Test MSRV	2m 49s
Test Suite Matrix (stable, --features pyo3)	53s
Check (stable)	16s
Rustfmt (stable)	6s
Test Suite Matrix (stable, --features auto-install)	44s
Test MSRV (--no-default-features)	2m 52s
Test Suite Matrix (stable, --all-features)	46s
Test MSRV (--features track-caller)	2m 52s
Test Suite Matrix (beta)	53s
Test MSRV (--features auto-install)	2m 46s
Test Suite Matrix (beta, --no-default-features)	53s
Test Suite Matrix (beta, --features track-caller)	44s
Test Suite Matrix (beta, --features pyo3)	49s
Test Suite Matrix (beta, --features auto-install)	56s
Test Suite Matrix (beta, --all-features)	49s
Test Suite Matrix (nightly)	1m 2s
Test Suite Matrix (nightly, --no-default-features)	1m 1s
Test Suite Matrix (nightly, --features track-caller)	1m 9s
Test Suite Matrix (nightly, --features pyo3)	1m 0s
Test Suite Matrix (nightly, --features auto-install)	1m 16s
Test Suite Matrix (nightly, --all-features)	1m 1s
	35m 7s

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