TEST: Fix 313 #360

Job	Run time
Test suite with Python nightly	13m 59s
Test mypyc suite with 32-bit Python	6m 57s
Test suite with py38-ubuntu, mypyc-compiled	17m 5s
Test suite with py38-windows-64	19m 46s
Test suite with py39-ubuntu	16m 17s
Test suite with py310-ubuntu	15m 33s
Test suite with py311-ubuntu, mypyc-compiled	15m 29s
Test suite with py312-ubuntu, mypyc-compiled	17m 39s
mypyc runtime tests with py39-macos	4m 20s
mypyc runtime tests with py38-debug-build-ubuntu	4m 30s
Type check our own code (py38-ubuntu)	1m 44s
Type check our own code (py38-windows-64)	2m 15s
Formatting and code style with Black + ruff	33s
	2h 16m 7s

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