Index: pytest-3.10.1/src/_pytest/compat.py

===================================================================

--- pytest-3.10.1.orig/src/_pytest/compat.py

+++ pytest-3.10.1/src/_pytest/compat.py

@@ -12,6 +12,7 @@ import re

 import sys

 from contextlib import contextmanager

+import attr

 import py

 import six

 from six import text_type

@@ -447,3 +448,8 @@ if six.PY2:

 else:

     from functools import lru_cache  # noqa: F401

+

+if getattr(attr, "__version_info__", ()) >= (19, 2):

+    ATTRS_EQ_FIELD = "eq"

+else:

+    ATTRS_EQ_FIELD = "cmp"

Index: pytest-3.10.1/src/_pytest/mark/structures.py

===================================================================

--- pytest-3.10.1.orig/src/_pytest/mark/structures.py

+++ pytest-3.10.1/src/_pytest/mark/structures.py

@@ -10,6 +10,7 @@ from six.moves import map

 from ..compat import getfslineno

 from ..compat import MappingMixin

 from ..compat import NOTSET

+from ..compat import ATTRS_EQ_FIELD

 from ..deprecated import MARK_INFO_ATTRIBUTE

 from ..deprecated import MARK_PARAMETERSET_UNPACKING

 from _pytest.outcomes import fail

@@ -440,7 +441,8 @@ class NodeKeywords(MappingMixin):

         return "<NodeKeywords for node %s>" % (self.node,)

-@attr.s(cmp=False, hash=False)

+# mypy cannot find this overload, remove when on attrs>=19.2

+@attr.s(hash=False, **{ATTRS_EQ_FIELD: False})  # type: ignore

 class NodeMarkers(object):

     """

     internal structure for storing marks belonging to a node

​