fix: don't perform invalid reference cast #1865

Job	Run time
Check	3m 25s
Check	3m 25s
Test mdbook	2m 42s
Test mdbook	2m 42s
Doctest Rust (ubuntu-latest)	3m 12s
Doctest Rust (ubuntu-latest)	3m 12s
Check Style	2m 56s
Check Style	2m 56s
Doctest Rust (windows-latest)	5m 30s
Doctest Rust (windows-latest)	5m 30s
Test Rust (ubuntu-latest)	5m 52s
Test Rust (ubuntu-latest)	5m 52s
Test C++ Runtime (ubuntu-latest)	5m 29s
Test C++ Runtime (ubuntu-latest)	5m 29s
Doctest Rust (macOS-latest)	5m 40s
Doctest Rust (macOS-latest)	5m 40s
Test Rust (windows-latest)	9m 40s
Test Rust (windows-latest)	9m 41s
Test C++ Runtime (windows-latest)	10m 25s
Test C++ Runtime (windows-latest)	10m 25s
Test Rust (macOS-latest)	9m 3s
Test Rust (macOS-latest)	9m 3s
Test C++ Runtime (macOS-latest)	8m 14s
Test C++ Runtime (macOS-latest)	8m 14s
	2h 24m 17s

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