Try to skip uncompilable tests for beta #124

Job	Run time
build_docs	40s
all_features (ubuntu, 1.77)	1m 26s
with_features (ubuntu, 1.77)	1m 13s
all_features (ubuntu, stable)	1m 23s
no_features (ubuntu, 1.77)	1m 10s
with_features (ubuntu, stable)	18s
all_features (ubuntu, nightly)	1m 2s
no_features (ubuntu, stable)	1m 2s
with_features (ubuntu, beta)	1m 9s
all_features (macos, 1.77)	1m 28s
no_features (ubuntu, nightly)	53s
with_features (ubuntu, nightly)	39s
all_features (macos, stable)	1m 20s
no_features (macos, 1.77)	59s
with_features (macos, 1.77)	1s
all_features (macos, nightly)	1m 11s
no_features (macos, stable)	47s
with_features (macos, stable)	1s
all_features (windows, 1.77)	2m 26s
no_features (macos, nightly)	1m 15s
with_features (macos, beta)	1s
all_features (windows, stable)	3m 40s
no_features (windows, 1.77)	2m 9s
with_features (macos, nightly)	1s
all_features (windows, nightly)	2m 31s
no_features (windows, stable)	3m 14s
with_features (windows, 1.77)	3s
no_features (windows, nightly)	1m 58s
with_features (windows, stable)	1s
with_features (windows, beta)	1s
	34m 2s

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