Raise error on file not found #458

Job	Run time
rust_ci (macos-latest, stable)	1m 4s
rust_ci (macos-latest, beta)	59s
rust_ci (macos-latest, nightly)	1m 23s
rust_ci (ubuntu-latest, stable)	1m 36s
rust_ci (ubuntu-latest, beta)	55s
rust_ci (ubuntu-latest, nightly)	54s
rust_ci (windows-latest, stable)	2m 55s
rust_ci (windows-latest, beta)	1m 39s
rust_ci (windows-latest, nightly)	1m 50s
	13m 15s

Provide feedback