Tests

[librt.internal] Make various functions take positional-only args (#2… #20292

Job	Run time
Test mypyc suite with 32-bit Python	9m 44s
Test suite with py314t-ubuntu, mypyc-compiled	18m 2s
Test suite with py311-ubuntu	9m 39s
Type check our own code (py310-windows-64)	2m 20s
Test suite with py310-ubuntu, mypyc-compiled	15m 42s
Test suite with py313-ubuntu, mypyc-compiled	15m 4s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 47s
mypyc runtime tests with py313-macos	4m 52s
Test suite with py312-ubuntu	10m 4s
Type check our own code (py310-ubuntu)	1m 30s
Test suite with py314-ubuntu, mypyc-compiled	15m 20s
mypyc runtime tests with py310-ubuntu	5m 41s
Parallel tests with py314-ubuntu, interpreted	24m 45s
Test suite with py314-windows-64	27m 8s
Formatting and code style with Black + ruff	1m 50s
	3h 10m 28s

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