Flake8 rule 'B950' reported an invalid point

[karrukola]

Flake8 reported an invalid point for the rule B950, with the messge line too long (90 > 80 characters).

Code formatted by black with its default settings.

Content of .flake8 file:

select = C,E,F,W,B,B950
ignore = E203, E501, W503
max-line-length=80

Flake8 settings taken from Black documentation

Debug information:
Atom version: 1.49.0
Flake8 version: 3.8.3 (flake8-bugbear: 20.1.4, flake8-docstrings: 1.5.0, pydocstyle: 5.0.2, mccabe: 0.6.1, pycodestyle: 2.6.0, pyflakes: 2.2.0, rst-docstrings: 0.0.13) CPython 3.6.8 on Windows

[karrukola]

Also occurring in this environment:

Debug information:
Atom version: 1.49.0
Flake8 version: 3.8.3 (flake8-bugbear: 20.1.4, mccabe: 0.6.1, pycodestyle: 2.6.0, pyflakes: 2.2.0) CPython 3.8.3 on Windows