Test downstream projects

Don't rerun test with --lf it hides failures. #1738

Sign in to view logs

Run time

Learn about OS pricing on GitHub Actions

Job	Run time
jupyter_client	5m 37s
ipyparallel	5m 32s
ipywidgets	42s
nbclient	2m 1s
jupyter_kernel_test	41s
qtconsole	2m 1s
spyder_kernels	1m 46s
	18m 20s