Handle bad file names. #182

Job	Run time
Test (stable)	22s
Test (1.64.0)	59s
Test (1.60.0)	58s
Test (1.58.1)	54s
Test (beta)	22s
Test (nightly)	21s
Rustfmt	21s
Test example (actix, stable)	1m 32s
Test example (actix, nightly)	2m 0s
Test example (axum, stable)	1m 10s
Test example (axum, nightly)	1m 7s
Test example (gotham, stable)	1m 14s
Test example (gotham, nightly)	1m 17s
Test example (iron, stable)	38s
Test example (iron, nightly)	37s
Test example (nickel, stable)	49s
Test example (nickel, nightly)	1m 3s
Test example (simple, stable)	52s
Test example (simple, nightly)	20s
Test example (static-sass, stable)	46s
Test example (static-sass, nightly)	40s
Test example (statics, stable)	24s
Test example (statics, nightly)	20s
Test example (tide, stable)	1m 20s
Test example (tide, nightly)	1m 9s
Test example (warp03, stable)	1m 9s
Test example (warp03, nightly)	1m 8s
	23m 52s

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