• Are you reporting a bug, or opening a feature request? Bugreport
• Please insert below the code you are checking with mypy

from typing import Any

class Structure():
    def __eq__(self, other: Any) -> bool:
        return {} == other

• What is the actual behavior/output?

mypytest.py:5: warning: Returning Any from function declared to return "bool"

• What is the behavior/output you expect? No error
• What are the versions of mypy and Python you are using?

Python 3.6.5 (v3.6.5:f59c0932b4, Mar 28 2018, 05:52:31) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)] on darwin

mypy==0.630

• What are the mypy flags you are using?
  --strict