TEST: Fix 313 #358

Job	Run time
Test suite with Python nightly	13m 10s
Test mypyc suite with 32-bit Python	7m 2s
Test suite with py38-ubuntu, mypyc-compiled	16m 53s
Test suite with py38-windows-64	19m 51s
Test suite with py39-ubuntu	16m 10s
Test suite with py310-ubuntu	15m 48s
Test suite with py311-ubuntu, mypyc-compiled	15m 44s
Test suite with py312-ubuntu, mypyc-compiled	17m 59s
mypyc runtime tests with py39-macos	4m 41s
mypyc runtime tests with py38-debug-build-ubuntu	4m 19s
Type check our own code (py38-ubuntu)	1m 51s
Type check our own code (py38-windows-64)	2m 33s
Formatting and code style with Black + ruff	33s
	2h 16m 34s

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