Tests

Fail with an explicit error on PyPy #19679

Job	Run time
Test mypyc suite with 32-bit Python	9m 15s
Test suite with py311-ubuntu	8m 45s
Test suite with py314t-ubuntu, mypyc-compiled	15m 30s
Test suite with py310-ubuntu, mypyc-compiled	14m 5s
Test suite with py313-ubuntu, mypyc-compiled	14m 17s
Parallel tests with py314-ubuntu, interpreted	24m 42s
Test suite with py312-ubuntu	9m 52s
Test suite with py314-ubuntu, mypyc-compiled	14m 0s
Type check our own code (py310-ubuntu)	1m 42s
Type check our own code (py310-windows-64)	2m 46s
mypyc runtime tests with py313-macos	5m 6s
Parallel tests with py314-ubuntu, mypyc-compiled	30m 38s
mypyc runtime tests with py310-ubuntu	4m 59s
Formatting and code style with Black + ruff	1m 58s
Test suite with py314-windows-64	26m 43s
	3h 4m 18s

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