Calculate pauses in file operations. #4

Job	Run time
call-build-freebsd / build-freebsd	2m 25s
call-build-alpine / build-alpine	1m 4s
call-build-fedora / build-fedora	1m 7s
call-build-macos / build-macos	1m 34s
call-build-solaris / build-solaris	4m 10s
call-build-ubuntu / build-ubuntu	1m 10s
	11m 30s

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