Allow missing descriptions. #15664

Job	Run time
test / test (3.2, ubuntu-latest)	43s
test / test (2.7, ubuntu-latest)	1m 10s
pre-commit / pre-commit	1m 34s
examples / examples	2m 2s
test / test (jruby-9.4.12.0, ubuntu-latest)	2m 52s
report	0s
	8m 21s

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