error: Failed to converge after 100 iterations.

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

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

...quoting the contents of `test.py`, the rule codes E225, E275, E999, along with the `pyproject.toml` settings and executed command, we'd be very appreciative!

error: Failed to parse test.py:1:10: Unexpected token ')'
test.py:1:8: E225 Missing whitespace around operator
  |
1 | a = (1 or)
  |        ^^ E225
  |
  = help: Add missing whitespace

test.py:1:8: E275 Missing whitespace after keyword
  |
1 | a = (1 or)
  |        ^^ E275
  |
  = help: Added missing whitespace after keyword

test.py:1:10: E999 SyntaxError: Unexpected token ')'
  |
1 | a = (1 or)
  |          ^ E999
  |

Found 153 errors (150 fixed, 3 remaining).
[*] 2 fixable with the `--fix` option.