3.6.0 breaking test: internal error loading conftest.py #3503
Description
No error with 3.5.1. Since 3.6.0 I get an unexpected error.
pytest --basetemp=/builds/company/project/.tox/py27/tmp --cov=project --no-cov-on-fail --html reports/test-reports/pytest-py27.html --self-contained-html --junitxml reports/test-reports/pytest-py27.xml tests --dburl postgresql://login:password@postgres:5432/tests
Traceback (most recent call last):
File "/builds/forcity/ewan/.tox/py27/local/lib/python2.7/site-packages/_pytest/config.py", line 376, in _importconftest
mod = conftestpath.pyimport()
File "/builds/forcity/ewan/.tox/py27/local/lib/python2.7/site-packages/py/_path/local.py", line 668, in pyimport
__import__(modname)
File "/builds/forcity/ewan/.tox/py27/local/lib/python2.7/site-packages/_pytest/assertion/rewrite.py", line 145, in find_module
_write_pyc(state, co, source_stat, pyc)
File "/builds/forcity/ewan/.tox/py27/local/lib/python2.7/site-packages/_pytest/assertion/rewrite.py", line 269, in _write_pyc
marshal.dump(co, fp.file)
TypeError: marshal.dump() 2nd arg must be file
ERROR: could not load /builds/forcity/ewan/tests/conftest.pypip freeze
amqp==1.4.9
anyjson==0.3.3
arrow==0.12.1
asn1crypto==0.24.0
atomicwrites==1.1.5
attrs==18.1.0
backports.functools-lru-cache==1.5
bcrypt==3.1.4
bottle==0.12.13
bulb==0.1.4
certifi==2018.4.16
cffi==1.11.5
chardet==3.0.4
cimkit==3.6.1
click==6.7
click-plugins==1.0.3
cligj==0.4.0
configparser==3.5.0
coverage==4.5.1
cryptography==2.2.2
cycler==0.10.0
descartes==1.1.0
enum-compat==0.0.2
enum34==1.1.6
eventlet==0.20.1
project==0.4.1rc1
Fiona==1.7.11.post2
flake8==3.5.0
flake8-html==0.4.0
company-classes==0.20.0rc0
company-modelingtoolkit==1.6.0
companyalchemy==0.10.0
funcsigs==1.0.2
functools32==3.2.3.post2
GeoAlchemy2==0.2.6
geojson==2.4.0
geopandas==0.3.0
greenlet==0.4.13
hypothesis==3.57.0
idna==2.6
invoke==1.0.0
ipaddress==1.0.22
Jinja2==2.10
jsonschema==2.6.0
kiwisolver==1.0.1
kombu==3.0.37
lumis-commons==0.0.1
MarkupSafe==1.0
matplotlib==2.2.2
mccabe==0.6.1
mock==2.0.0
more-itertools==4.2.0
munch==2.3.2
nameko==2.8.5
Nameko-Logger==1.6.1
numexpr==2.6.5
numpy==1.14.3
orca==1.4.0
pandas==0.23.0
paramiko==2.4.1
path.py==11.0.1
patsy==0.5.0
pbr==4.0.3
pluggy==0.6.0
prettytable==0.7.2
psycopg2==2.7.4
py==1.5.3
pyasn1==0.4.3
pycodestyle==2.3.1
pycparser==2.18
pyflakes==1.6.0
Pygments==2.2.0
PyNaCl==1.2.1
pyparsing==2.2.0
pyproj==1.9.5.1
pytest==3.6.0
pytest-cov==2.5.1
pytest-company-db==0.3.1
pytest-html==1.18.0
pytest-metadata==1.7.0
python-dateutil==2.7.3
pytz==2018.4
PyYAML==3.12
requests==2.18.4
retrying==1.3.3
Rtree==0.8.3
scipy==1.1.0
Shapely==1.6.4.post1
simplejson==3.15.0
six==1.11.0
SQLAlchemy==1.2.7
SQLAlchemy-Utils==0.33.3
statsmodels==0.8.0
structlog==18.1.0
subprocess32==3.5.1
tables==3.4.3
tblib==1.3.2
toolz==0.9.0
tox==3.0.0
ujson==1.35
urbansim==3.1.1
urllib3==1.22
virtualenv==16.0.0
Werkzeug==0.14.1
wrapt==1.10.11
yapf==0.22.0
zbox==1.2.0