Improve error messages #346

Job	Run time
Test download cache 1/2 (windows-latest)	1m 8s
Test env cache 1/2 (windows-latest)	1m 7s
Test env cache with changing root path 1/2 (windows-latest)	1m 9s
Test download cache 1/2 (ubuntu-latest)	36s
Test env cache 1/2 (ubuntu-latest)	36s
Test env cache with changing root path 1/2 (ubuntu-latest)	29s
Test download cache 1/2 (macos-latest)	1m 7s
Test env cache 1/2 (macos-latest)	55s
Test env cache with changing root path 1/2 (macos-latest)	51s
Test env then download 1/2 (windows-latest)	2m 1s
Test env then download 1/2 (ubuntu-latest)	33s
Test env then download 1/2 (macos-latest)	1m 10s
Test download cache 2/2 (windows-latest)	1m 6s
Test download cache 2/2 (ubuntu-latest)	19s
Test download cache 2/2 (macos-latest)	45s
Test env cache 2/2 (windows-latest)	42s
Test env cache 2/2 (ubuntu-latest)	11s
Test env cache 2/2 (macos-latest)	21s
Test env cache with changing root path 2/2 (windows-latest)	1m 6s
Test env cache with changing root path 2/2 (ubuntu-latest)	34s
Test env cache with changing root path 2/2 (macos-latest)	2m 48s
Test env then download 2/2 (windows-latest)	1m 6s
Test env then download 2/2 (ubuntu-latest)	11s
Test env then download 2/2 (macos-latest)	38s
	21m 29s

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