Broken: debuging mypy

Author: sobolevn

.travis.yml

@@ -18,7 +18,8 @@ install: poetry install
 
 script:
   - flake8 .
-  - mypy returns tests/**/*.py
+  - mypy returns ./tests/**/*.py
+  - mypy tests/test_io/test_ioresult_container/test_ioresult_bind.py
   - pytest . docs/pages
   - doc8 -q docs
   - poetry check

returns/io.py

@@ -293,12 +293,12 @@ def map(  # noqa: A003
         return self.from_result(self._inner_value.map(function))
 
     def bind(
-        self: 'IOResult[_ValueType, _T]',
+        self: 'IOResult[_ValueType, _ErrorType]',
         function: Callable[
             [_ValueType],
-            'IOResult[_NewValueType, _T]',
+            'IOResult[_NewValueType, _ErrorType]',
         ],
-    ) -> 'IOResult[_NewValueType, _T]':
+    ) -> 'IOResult[_NewValueType, _ErrorType]':
         """
         Composes successful container with a function that returns a container.