MOTOR-1284 Fix Cryptography Install on PyPy3.8 (#270)

* MOTOR-1284 Fix Cryptography Install

* specify install_command

* handle warning

* handle warning

pyproject.toml

@@ -113,8 +113,10 @@ filterwarnings = [
     "ignore: The fetch_next property is deprecated:DeprecationWarning",
     "ignore:The next_object method is deprecated:DeprecationWarning",
     "ignore:unclosed <ssl.SSLSocket:ResourceWarning",
-    "ignore:datetime.datetime.utcfromtimestamp:DeprecationWarning",
-    "ignore:datetime.datetime.utcnow:DeprecationWarning",
+    "ignore:datetime.datetime.utc:DeprecationWarning",
+    # From older versions aiohttp.
+    "ignore:\"@coroutine\" decorator is deprecated since Python 3.8:DeprecationWarning",
+    "ignore:The loop argument is deprecated since Python 3.8:DeprecationWarning"
 ]
 
 [tool.ruff]

tox.ini

@@ -47,6 +47,8 @@ labels = # Use labels and -m instead of -e so that tox -m <label> fails instantl
     typecheck-mypy = typecheck-mypy
 
 [testenv]
+install_command =
+    python -I -m pip install --prefer-binary {opts} {packages}
 passenv =
     DB_IP
     DB_PORT
@@ -101,7 +103,7 @@ extras =
     test
 commands =
     pip install git+https://github.com/mongodb/mongo-python-driver.git@master
-    pip install -q --pre pymongocrypt
+    pip install -q --pre --prefer-binary pymongocrypt
     python --version
     python -c "import pymongo; print('PyMongo %s' % (pymongo.version,))"
     python -m pytest -v {posargs}