Tests

Send early errors to workers #20887

Job	Run time
Test mypyc suite with 32-bit Python	9m 39s
mypyc runtime tests with py313-macos	5m 42s
Parallel tests with py314-ubuntu, mypyc-compiled	27m 27s
mypyc runtime tests with py310-ubuntu	5m 39s
Test suite with py314t-ubuntu, mypyc-compiled	16m 15s
Type check our own code (py310-ubuntu)	1m 44s
Test suite with py311-ubuntu	8m 21s
Parallel tests with py314-ubuntu, interpreted	26m 14s
Test suite with py313-ubuntu, mypyc-compiled	14m 9s
Test suite with py312-ubuntu	9m 13s
Parallel tests with py314-windows-64, interpreted	10m 8s
Test suite with py314-windows-64	26m 6s
Test suite with py310-ubuntu, mypyc-compiled	15m 1s
Type check our own code (py310-windows-64)	2m 32s
Test suite with py314-ubuntu, mypyc-compiled	13m 41s
Formatting and code style with Black + ruff	1m 48s
	3h 13m 39s

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