ruff  *.py --select UP037 --no-cache --fix

from __future__ import annotations
class IdentityLinearOperator(ConstantDiagLinearOperator):
    def _mul_matrix(
        other: Union[Float[torch.Tensor, "... #M #N"], Float[LinearOperator, "... #M #N"]],
    ) -> Float[LinearOperator, "... M N"]:
        return other

/home/rafal/test/tmp_folder/2589347.py:4:42: UP037 Remove quotes from type annotation
/home/rafal/test/tmp_folder/2589347.py:4:78: UP037 Remove quotes from type annotation
Found 2 errors.

error: Autofix introduced a syntax error. Reverting all changes.

This indicates a bug in `ruff`. If you could open an issue at:

    https://github.com/astral-sh/ruff/issues/new?title=%5BAutofix%20error%5D

...quoting the contents of `/home/rafal/test/tmp_folder/2589347.py`, the rule codes UP037, along with the `pyproject.toml` settings and executed command, we'd be very appreciative!