Merge pull request #448 from oscar-system/bl/extconfrace #798

Job	Run time
test (~1.6.0-0, macOS-latest)	23m 23s
test (~1.9.0-0, macOS-latest)	21m 26s
test (~1.10.0-0, macOS-latest)	24m 45s
test (nightly, macOS-latest)	26m 31s
test-with-mongodb (~1.6.0-0, ubuntu-latest)	19m 12s
test-with-mongodb (~1.8.0-0, ubuntu-latest)	16m 38s
test-with-mongodb (~1.9.0-0, ubuntu-latest)	16m 2s
test-with-mongodb (~1.10.0-0, ubuntu-latest)	22m 5s
test-with-mongodb (nightly, ubuntu-latest)	25m 38s
	3h 15m 40s

Provide feedback