Explicitly label dropped events #151

Job	Run time
lint (stable, ubuntu-latest)	1m 37s
test (stable, ubuntu-latest)	1m 55s
build (stable, ubuntu-latest)	4m 27s
test (stable, windows-latest)	5m 36s
build (stable, windows-latest)	9m 55s
test (stable, macos-latest)	4m 42s
build (stable, macos-latest)	17m 54s
test (nightly, ubuntu-latest)	2m 19s
build (nightly, ubuntu-latest)	4m 34s
test (nightly, windows-latest)	5m 3s
build (nightly, windows-latest)	8m 56s
test (nightly, macos-latest)	4m 29s
build (nightly, macos-latest)	5m 18s
	1h 16m 45s

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