tox 3.1 passes PROCESSOR_ARCHITECTURE by default
@@ -5,7 +5,7 @@ envlist = py27,py36,py37,pypy
[testenv]
deps = -rrequirements-dev.txt
-passenv = GOROOT HOME HOMEPATH PROCESSOR_ARCHITECTURE PROGRAMDATA TERM
+passenv = GOROOT HOME HOMEPATH PROGRAMDATA TERM
commands =
coverage erase
coverage run -m pytest {posargs:tests}
