Get process output from Malt, instead of capturing it ourselves #186

Job	Run time
test (1, x86, ubuntu-latest)	1m 53s
test (1, x86, windows-latest)	2m 40s
test (min, x86, ubuntu-latest)	1m 46s
test (pre, default, windows-latest)	2m 11s
test (min, default, macOS-latest)	2m 8s
test (1, default, macOS-latest)	1m 24s
test (pre, default, macOS-latest)	1m 53s
test (min, x86, windows-latest)	2m 36s
test (min, default, ubuntu-latest)	1m 26s
test (min, default, windows-latest)	1m 52s
test (1, default, windows-latest)	2m 3s
test (pre, default, ubuntu-latest)	1m 46s
test (nightly, x86, windows-latest)	2m 54s
test (nightly, x86, ubuntu-latest)	2m 6s
test (pre, x86, ubuntu-latest)	2m 3s
test (nightly, default, windows-latest)	2m 16s
test (nightly, default, ubuntu-latest)	1m 50s
test (pre, x86, windows-latest)	2m 30s
test (1, default, ubuntu-latest)	1m 40s
test (nightly, default, macOS-latest)	2m 11s
	41m 8s

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