Tests

Respect explicit return type of new() #22199

Job	Run time
Test mypyc suite with 32-bit Python	11m 10s
Test suite with py314-ubuntu, mypyc-compiled	16m 11s
mypyc runtime tests with py313-macos	6m 51s
Test suite with py313-ubuntu, mypyc-compiled	15m 46s
Test suite with py314-windows-64	29m 47s
Test suite with py310-ubuntu, mypyc-compiled	16m 29s
Parallel tests with py314-ubuntu, interpreted	25m 51s
Formatting and code style with Black + ruff	1m 46s
mypyc runtime tests with py310-ubuntu	7m 10s
Type check our own code (py310-windows-64)	1m 44s
Test suite with py312-ubuntu	10m 13s
Test suite with py314t-ubuntu, mypyc-compiled	18m 25s
Type check our own code (py310-ubuntu)	1m 11s
Parallel tests with py314-windows-64, interpreted	10m 12s
Parallel tests with py314-ubuntu, mypyc-compiled	29m 43s
Test suite with py311-ubuntu	9m 35s
	3h 32m 4s

Provide feedback