Repository: conda/conda

Issue:
conda update --all: failed to solve environment
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**I'm submitting a...**
  - [X] bug report
  - [ ] feature request


## Current Behavior
<!-- What actually happens?
     If you want to include console output, please use "Steps to Reproduce" below. -->


### Steps to Reproduce
<!-- If the current behavior is a bug, please provide specific, minimal steps to independently reproduce.
     Include the exact conda commands that reproduce the issue and their output between the ticks below. -->
```
~ $ conda update --all
Solving environment: failed

# >>>>>>>>>>>>>>>>>>>>>> ERROR REPORT <<<<<<<<<<<<<<<<<<<<<<

    Traceback (most recent call last):
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/exceptions.py", line 819, in __call__
        return func(*args, **kwargs)
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/cli/main.py", line 78, in _main
        exit_code = do_call(args, p)
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/cli/conda_argparse.py", line 77, in do_call
        exit_code = getattr(module, func_name)(args, parser)
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/cli/main_update.py", line 14, in execute
        install(args, parser, 'update')
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/cli/install.py", line 235, in install
        force_reinstall=context.force,
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/core/solve.py", line 506, in solve_for_transaction
        force_remove, force_reinstall)
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/core/solve.py", line 439, in solve_for_diff
        final_precs = self.solve_final_state(deps_modifier, prune, ignore_pinned, force_remove)
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/core/solve.py", line 180, in solve_final_state
        index, r = self._prepare(prepared_specs)
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/core/solve.py", line 580, in _prepare
        self.subdirs, prepared_specs)
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/core/index.py", line 215, in get_reduced_index
        new_records = query_all(spec)
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/core/index.py", line 184, in query_all
        return tuple(concat(future.result() for future in as_completed(futures)))
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/core/subdir_data.py", line 94, in query
        self.load()
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/core/subdir_data.py", line 148, in load
        _internal_state = self._load()
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/core/subdir_data.py", line 216, in _load
        mod_etag_headers.get('_mod'))
      File "/Users/apple/anaconda/lib/python3.6/site-packages/conda/core/subdir_data.py", line 416, in fetch_repodata_remote_request
        timeout=timeout)
      File "/Users/apple/.local/lib/python3.6/site-packages/requests/sessions.py", line 480, in get
        return self.request('GET', url, **kwargs)
      File "/Users/apple/.local/lib/python3.6/site-packages/requests/sessions.py", line 459, in request
        prep.url, proxies, stream, verify, cert
      File "/Users/apple/.local/lib/python3.6/site-packages/requests/sessions.py", line 617, in merge_environment_settings
        env_proxies = get_environ_proxies(url) or {}
      File "/Users/apple/.local/lib/python3.6/site-packages/requests/utils.py", line 562, in get_environ_proxies
        if should_bypass_proxies(url):
    TypeError: should_bypass_proxies_patched() missing 1 required positional argument: 'no_proxy'

`$ /Users/apple/anaconda/bin/conda update --all`

  environment variables:
                 CIO_TEST=<not set>
               CONDA_ROOT=/Users/apple/anaconda
                     PATH=~/Library/Python/2.7/bin:/Users/apple/anaconda/bin:/usr/bin:/bin:/usr/
                          sbin:/sbin:/usr/local/bin:/Library/TeX/texbin:/opt/X11/bin:/Library/Fr
                          ameworks/Mono.framework/Versions/Current/Commands:/Applications/Wiresh
                          ark.app/Contents/MacOS
       REQUESTS_CA_BUNDLE=<not set>
            SSL_CERT_FILE=<not set>


```


## Expected Behavior
<!-- What do you think should happen? -->


## Environment Information
<details open><summary><code>`conda info`</code></summary><p>
<!-- between the ticks below, paste the output of 'conda info' -->

```
     active environment : None
       user config file : /Users/apple/.condarc
 populated config files : /Users/apple/.condarc
          conda version : 4.5.6
    conda-build version : not installed
         python version : 3.6.6.final.0
       base environment : /Users/apple/anaconda  (writable)
           channel URLs : https://conda.anaconda.org/conda-forge/osx-64
                          https://conda.anaconda.org/conda-forge/noarch
                          https://repo.anaconda.com/pkgs/main/osx-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/free/osx-64
                          https://repo.anaconda.com/pkgs/free/noarch
                          https://repo.anaconda.com/pkgs/r/osx-64
                          https://repo.anaconda.com/pkgs/r/noarch
                          https://repo.anaconda.com/pkgs/pro/osx-64
                          https://repo.anaconda.com/pkgs/pro/noarch
          package cache : /Users/apple/anaconda/pkgs
                          /Users/apple/.conda/pkgs
       envs directories : /Users/apple/anaconda/envs
                          /Users/apple/.conda/envs
               platform : osx-64
             user-agent : conda/4.5.6 requests/2.9.1 CPython/3.6.6 Darwin/17.6.0 OSX/10.13.5
                UID:GID : 501:20
             netrc file : None
           offline mode : False

```
</p></details>


<details open><summary><code>`conda config --show-sources`</code></summary><p>
<!-- between the ticks below, paste the output of 'conda config --show-sources' -->

```
==> /Users/apple/.condarc <==
ssl_verify: True
channel_priority: False
channels:
  - conda-forge
  - defaults

```
</p></details>


<details><summary><code>`conda list --show-channel-urls`</code></summary><p>
<!-- between the ticks below, paste the output of 'conda list --show-channel-urls' -->

```
# packages in environment at /Users/apple/anaconda:
#
# Name                    Version                   Build  Channel
_license                  1.1                      py36_1    defaults
absl-py                   0.2.2                      py_0    conda-forge
accumulator               0.3                       <pip>
alabaster                 0.7.11                     py_3    conda-forge
amqp                      2.3.2                      py_1    conda-forge
anaconda                  custom           py36ha4fed55_0    defaults
anaconda-client           1.6.14                     py_0    conda-forge
anaconda-navigator        1.8.7                    py36_0    defaults
anaconda-project          0.8.2                    py36_0    conda-forge
anyqt                     0.0.8                    py36_1    conda-forge
appnope                   0.1.0                    py36_0    conda-forge
appscript                 1.0.1            py36h470a237_0    conda-forge
arch                      4.2                       <pip>
argh                      0.26.2                    <pip>
argparse                  1.4.0                     <pip>
asn1crypto                0.24.0                   py36_0    conda-forge
asn1crypto                0.23.0                    <pip>
aspell-python-py3         1.15                      <pip>
astor                     0.6.2                      py_0    conda-forge
astroid                   1.6.5                    py36_0    conda-forge
autocorrect               0.3.0                     <pip>
babel                     2.6.0                    py36_0    conda-forge
backcall                  0.1.0                      py_0    conda-forge
backports                 1.0                      py36_1    conda-forge
backports.functools_lru_cache 1.5                      py36_0    conda-forge
backports.shutil_get_terminal_size 1.0.0                      py_3    conda-forge
backports.weakref         1.0.post1        py36hcbb2b67_0    defaults
beautifulsoup4            4.6.0                    py36_0    conda-forge
billiard                  3.5.0.3                  py36_0    conda-forge
bitarray                  0.8.2            py36h1de35cc_0    defaults
blas                      1.0                         mkl    conda-forge
bleach                    1.5.0                    py36_0    conda-forge
blinker                   1.4                        py_1    conda-forge
blist                     1.3.6                    py36_0    defaults
boto                      2.48.0           py36hdbc59ac_1    defaults
boto3                     1.7.52                     py_0    conda-forge
botocore                  1.10.52                    py_0    conda-forge
bt                        0.2.5                     <pip>
bz2file                   0.98                     py36_0    defaults
bzip2                     1.0.6                         1    conda-forge
ca-certificates           2018.4.16                     0    conda-forge
cairo                     1.14.12              he60d9cb_2    defaults
celery                    4.1.0                     <pip>
certifi                   2017.11.5                 <pip>
certifi                   2018.4.16                py36_0    conda-forge
cffi                      1.11.5                   py36_0    conda-forge
cffi                      1.11.2                    <pip>
chardet                   3.0.4                      py_1    conda-forge
clangdev                  6.0.0                 default_0    conda-forge
click                     6.7                        py_1    conda-forge
cloudpickle               0.5.3                      py_0    conda-forge
clyent                    1.2.2                      py_1    conda-forge
colorama                  0.3.9                      py_1    conda-forge
commonmark                0.7.5                      py_0    conda-forge
conda                     4.5.6                    py36_0    conda-forge
conda-env                 2.6.0                         0    conda-forge
contextlib2               0.5.5                    py36_1    conda-forge
cryptography              2.1.3                     <pip>
cryptography              2.2.2            py36h1de35cc_0    defaults
curl                      7.60.0               ha441bb4_0    defaults
cycler                    0.10.0                   py36_0    conda-forge
cyordereddict             1.0.0                     <pip>
cython                    0.28.3           py36hfc679d8_0    conda-forge
cytoolz                   0.9.0.1                  py36_0    conda-forge
dask-core                 0.18.1                     py_0    conda-forge
dbus                      1.13.2               h760590f_1    defaults
decorator                 4.3.0                      py_0    conda-forge
distributed               1.22.0                   py36_0    conda-forge
docutils                  0.14                     py36_0    conda-forge
editdistance              0.4                       <pip>
entrypoints               0.2.3                    py36_1    conda-forge
enum34                    1.1.6                     <pip>
et_xmlfile                1.0.1                    py36_0    conda-forge
eventsourcing             3.0.0                     <pip>
expat                     2.2.5                hfc679d8_1    conda-forge
fastcache                 1.0.2            py36h470a237_0    conda-forge
ffn                       0.3.3                     <pip>
filelock                  2.0.13                    <pip>
fix-yahoo-finance         0.0.19                    <pip>
flake8                    3.5.0                     <pip>
flask                     1.0.2                      py_1    conda-forge
flask-cors                3.0.6                    py36_0    defaults
fontconfig                2.13.0                        1    conda-forge
freetype                  2.8.1                         0    conda-forge
future                    0.16.0                   py36_0    conda-forge
futures                   3.1.1                     <pip>
gast                      0.2.0                      py_0    conda-forge
gensim                    3.4.0            py36h917ab60_0    defaults
get_terminal_size         1.0.0                h7520d66_0    defaults
gettext                   0.19.8.1                      0    conda-forge
gevent                    1.3.4            py36h1de35cc_0    defaults
glib                      2.56.1               h35bc53a_0    defaults
gmp                       6.1.2                hfc679d8_0    conda-forge
gmpy2                     2.0.8                    py36_1    conda-forge
goslate                   1.5.1                     <pip>
graphite2                 1.3.11               h7d4d677_0    conda-forge
graphviz                  2.40.1               h0a44026_0    defaults
greenlet                  0.4.13                   py36_0    conda-forge
grpcio                    1.12.1           py36hd9629dc_0    defaults
gsl                       2.4                  h1de35cc_4    defaults
h5py                      2.8.0            py36hb794570_1    conda-forge
harfbuzz                  1.7.6                h171471c_1    defaults
hdf5                      1.10.2                        0    conda-forge
heapdict                  1.0.0                    py36_0    conda-forge
html5lib                  0.9999999                py36_0    conda-forge
icu                       58.2                 hfc679d8_0    conda-forge
idna                      2.7                        py_1    conda-forge
imagesize                 1.0.0                    py36_0    conda-forge
importlib                 1.0.4                     <pip>
intel-openmp              2018.0.3                      0    defaults
intervaltree              2.1.0                     <pip>
ipykernel                 4.8.2                    py36_0    conda-forge
ipython                   6.4.0                    py36_0    conda-forge
ipython_genutils          0.2.0                      py_1    conda-forge
isort                     4.3.4                    py36_0    conda-forge
itsdangerous              0.24                       py_2    conda-forge
jbig                      2.1                           0    conda-forge
jdcal                     1.4                      py36_0    conda-forge
jedi                      0.12.0                   py36_0    conda-forge
jellyfish                 0.5.6                     <pip>
jinja2                    2.10                     py36_0    conda-forge
jmespath                  0.9.3                    py36_0    conda-forge
joblib                    0.12                       py_0    conda-forge
jpeg                      9c                   h470a237_0    conda-forge
jsonschema                2.6.0                    py36_1    conda-forge
jupyter_client            5.2.3                    py36_0    conda-forge
jupyter_console           5.2.0                    py36_0    conda-forge
jupyter_core              4.4.0                      py_0    conda-forge
jupyterlab_launcher       0.11.0                   py36_0    conda-forge
keras                     2.2.0                         0    defaults
keras-applications        1.0.2                      py_0    conda-forge
keras-base                2.2.0                    py36_0    defaults
keras-preprocessing       1.0.1                      py_0    conda-forge
keyring                   13.2.1                   py36_0    conda-forge
keyrings.alt              2.3                       <pip>
kiwisolver                1.0.1                    py36_1    conda-forge
kombu                     4.1.0                     <pip>
krb5                      1.16.1               hbb41f41_0    conda-forge
lazy-object-proxy         1.3.1                    py36_0    conda-forge
lesscpy                   0.12.0                    <pip>
liac-arff                 2.1.1                     <pip>
libcurl                   7.60.0               hf30b1f0_0    defaults
libcxx                    6.0.0                         0    conda-forge
libcxxabi                 4.0.1                hebd6815_0    defaults
libedit                   3.1.20170329         haf1bffa_0    conda-forge
libffi                    3.2.1                         3    conda-forge
libgcc                    4.8.5               hdbeacc1_10    defaults
libgfortran               3.0.1                h93005f0_2    defaults
libgfortran-ng            3.0.1                h93005f0_2    defaults
libgpuarray               0.7.6                         0    conda-forge
libiconv                  1.15                 h470a237_1    conda-forge
libopenblas               0.2.20               hdc02c5d_7    defaults
libpng                    1.6.34               ha92aebf_1    conda-forge
libprotobuf               3.5.2                hd28b015_1    conda-forge
libsodium                 1.0.16                        0    conda-forge
libssh2                   1.8.0                h5b517e9_2    conda-forge
libtiff                   4.0.9                he6b73bb_1    conda-forge
libuuid                   1.0.3                         1    conda-forge
libxml2                   2.9.8                h422b904_1    conda-forge
libxslt                   1.1.32               h88dbc4e_1    conda-forge
llvm-meta                 6.0.1                         0    conda-forge
llvmdev                   6.0.0                h137f3e6_3    defaults
locket                    0.2.0                    py36_1    conda-forge
lxml                      4.2.3            py36hc9114bc_0    conda-forge
lzo                       2.10                          0    conda-forge
mako                      1.0.7                    py36_0    conda-forge
markdown                  2.6.11                     py_0    conda-forge
Markdown                  2.6.9                     <pip>
markupsafe                1.0                      py36_0    conda-forge
matplotlib                2.2.2                    py36_1    conda-forge
mccabe                    0.6.1                    py36_0    conda-forge
mistune                   0.8.3                    py36_1    conda-forge
mkl                       2018.0.3                      1    defaults
mkl-service               1.1.2            py36h7ea6df4_4    defaults
mkl_fft                   1.0.2                    py36_0    conda-forge
mkl_random                1.0.1                    py36_0    conda-forge
mock                      2.0.0                    py36_0    conda-forge
mpc                       1.1.0                         4    conda-forge
mpfr                      3.1.5                         0    conda-forge
mpmath                    1.0.0                      py_0    conda-forge
msgpack-python            0.5.6            py36h2d50403_2    conda-forge
multipledispatch          0.5.0                    py36_0    conda-forge
multitasking              0.0.5                     <pip>
navigator-updater         0.2.1                    py36_0    defaults
nbconvert                 5.3.1                      py_1    conda-forge
nbformat                  4.4.0                    py36_0    conda-forge
ncurses                   6.1                           0    conda-forge
networkx                  2.1                        py_1    conda-forge
ngram                     3.3.2                     <pip>
nltk                      3.3.0                    py36_0    defaults
nose                      1.3.7                    py36_2    conda-forge
notebook                  5.5.0                    py36_0    conda-forge
numpy                     1.14.5           py36h9bb19eb_3    defaults
numpy-base                1.14.5           py36ha9ae307_3    defaults
numpydoc                  0.8.0                    py36_0    conda-forge
oauthlib                  2.1.0                      py_0    conda-forge
olefile                   0.45.1                     py_1    conda-forge
openblas                  0.3.1                hd130d23_0    conda-forge
openpyxl                  2.5.4                    py36_0    conda-forge
openssl                   1.0.2o                        0    conda-forge
packaging                 17.1                       py_0    conda-forge
pandas                    0.23.3                   py36_0    conda-forge
pandas-datareader         0.6.0                    py36_0    conda-forge
pandoc                    2.2.1                hde52d81_0    conda-forge
pandocfilters             1.4.2                    py36_0    conda-forge
pango                     1.41.0               h3bae10e_0    defaults
parso                     0.1.1                     <pip>
parso                     0.3.0                      py_0    conda-forge
partd                     0.3.8                    py36_0    conda-forge
path.py                   11.0.1                     py_0    conda-forge
pathlib2                  2.3.2                    py36_0    conda-forge
patsy                     0.5.0                    py36_0    conda-forge
pbr                       4.1.0                      py_0    conda-forge
pcre                      8.42                 h378b8a2_0    defaults
pexpect                   4.6.0                    py36_0    conda-forge
pickleshare               0.7.4                    py36_0    conda-forge
pillow                    5.2.0                    py36_0    conda-forge
pip                       10.0.1                    <pip>
pip                       10.0.1                   py36_0    defaults
pixman                    0.34.0                        2    conda-forge
ply                       3.11                       py_1    conda-forge
prompt_toolkit            1.0.15                   py36_0    conda-forge
protobuf                  3.5.2                    py36_0    conda-forge
psutil                    5.4.6                    py36_0    conda-forge
psutil                    5.4.1                     <pip>
ptyprocess                0.6.0                    py36_0    conda-forge
py                        1.5.4                      py_0    conda-forge
py-stringmatching         0.4.0                     <pip>
py4j                      0.10.7                   py36_0    conda-forge
PyAlgoTrade               0.18                      <pip>
pycodestyle               2.4.0                      py_1    conda-forge
pycosat                   0.6.3                    py36_0    conda-forge
pycparser                 2.18                     py36_0    conda-forge
pycrypto                  2.6.1                    py36_1    conda-forge
pycurl                    7.43.0.2         py36hdbc3d79_0    defaults
PyDictionary              1.5.2                     <pip>
pyenchant                 1.6.11                    <pip>
pyflakes                  2.0.0                      py_0    conda-forge
pygments                  2.2.0                      py_1    conda-forge
pygpu                     0.7.6            py36h7eb728f_0    conda-forge
pyjwt                     1.6.4                      py_0    conda-forge
pylint                    1.9.2                    py36_0    conda-forge
pyodbc                    4.0.23           py36h0a44026_0    defaults
pyopengl                  3.1.1a1                  py36_0    conda-forge
pyopenssl                 18.0.0                   py36_0    conda-forge
pyOpenSSL                 17.3.0                    <pip>
pyparsing                 2.2.0                      py_1    conda-forge
pyphonetics               0.4.1                     <pip>
pyqt                      5.9.2            py36h11d3b92_0    defaults
pysocks                   1.6.8                    py36_1    conda-forge
pyspark                   2.3.1                    py36_1    conda-forge
python                    3.6.6                hc167b69_0    defaults
python-crfsuite           0.9.5            py36h470a237_0    conda-forge
python-dateutil           2.7.3                      py_0    conda-forge
python-editor             1.0.3                    py36_0    conda-forge
python.app                2                        py36_8    defaults
pytz                      2018.5                     py_0    conda-forge
pyyaml                    3.12                     py36_1    conda-forge
pyzmq                     17.0.0                   py36_4    conda-forge
qt                        5.9.6                h74ce4d9_0    defaults
qtawesome                 0.4.4                    py36_0    conda-forge
qtconsole                 4.3.1                    py36_0    conda-forge
qtpy                      1.4.2              pyh8a2030e_1    conda-forge
QuantLib-Python           1.11                      <pip>
readline                  7.0                  hc1231fa_4    defaults
requests                  2.19.1                   py36_0    conda-forge
requests                  2.18.4                    <pip>
requests-file             1.4.3                    py36_0    defaults
requests-ftp              0.3.1                    py36_0    conda-forge
requests-oauthlib         1.0.0                    py36_0    conda-forge
rope                      0.10.7                   py36_0    conda-forge
rpy2                      2.9.1                     <pip>
ruamel_yaml               0.15.42          py36h470a237_0    conda-forge
s3transfer                0.1.13                   py36_0    conda-forge
scikit-learn              0.19.1           py36hffbff8c_0    defaults
scipy                     1.1.0            py36hcaad992_0    defaults
seaborn                   0.8.1                    py36_0    conda-forge
send2trash                1.5.0                      py_0    conda-forge
setuptools                39.2.0                   py36_0    conda-forge
setuptools                36.6.0                    <pip>
simplegeneric             0.8.1                      py_1    conda-forge
singledispatch            3.4.0.3                  py36_0    conda-forge
sip                       4.19.8                   py36_0    conda-forge
six                       1.11.0                    <pip>
six                       1.11.0                   py36_1    conda-forge
smart_open                1.6.0                    py36_0    conda-forge
snowballstemmer           1.2.1                      py_1    conda-forge
sortedcollections         1.0.1                      py_1    conda-forge
sortedcontainers          2.0.4                    py36_0    conda-forge
sphinx                    1.7.5                    py36_0    conda-forge
sphinxcontrib             1.0              py36h9364dc8_1    defaults
sphinxcontrib-websupport  1.1.0                    py36_0    conda-forge
spyder                    3.3.0                    py36_1    conda-forge
spyder-kernels            0.2.4                    py36_0    conda-forge
sqlalchemy                1.2.9                    py36_0    conda-forge
sqlite                    3.24.0               h2f33b56_0    conda-forge
statsmodels               0.9.0                    py36_0    conda-forge
sympy                     1.1.1                    py36_0    conda-forge
TA-Lib                    0.4.10                    <pip>
tabulate                  0.8.2                      py_0    conda-forge
tblib                     1.3.2                    py36_0    conda-forge
tensorboard               1.8.0                    py36_1    conda-forge
tensorflow                1.8.0                    py36_1    conda-forge
termcolor                 1.1.0                    py36_1    conda-forge
terminado                 0.8.1                    py36_0    conda-forge
testpath                  0.3.1                    py36_0    conda-forge
textblob                  0.15.1                     py_0    conda-forge
theano                    1.0.2                    py36_0    conda-forge
tk                        8.6.7                         0    conda-forge
toolz                     0.9.0                      py_0    conda-forge
tornado                   5.0.2                    py36_0    conda-forge
trade                     0.2.9                     <pip>
traitlets                 4.3.2                    py36_0    conda-forge
twython                   3.7.0                      py_0    conda-forge
typing                    3.6.4                    py36_0    conda-forge
unicodecsv                0.14.1                   py36_0    conda-forge
unidecode                 1.0.22                   py36_0    conda-forge
unixodbc                  2.3.6                h3efe00b_0    defaults
urllib3                   1.23                     py36_0    conda-forge
urllib3                   1.22                      <pip>
vaderSentiment            2.5                       <pip>
vine                      1.1.4                      py_1    conda-forge
wcwidth                   0.1.7                    py36_0    conda-forge
webencodings              0.5.1                    py36_0    conda-forge
werkzeug                  0.14.1                     py_0    conda-forge
wheel                     0.31.1                   py36_0    conda-forge
whoosh                    2.7.4                    py36_0    conda-forge
widgetsnbextension        3.2.1                    py36_0    conda-forge
wrapt                     1.10.11                  py36_0    conda-forge
xlrd                      1.1.0                      py_2    conda-forge
xlsxwriter                1.0.5                      py_0    conda-forge
xlwings                   0.11.8                   py36_0    conda-forge
xlwt                      1.3.0                    py36_0    conda-forge
xz                        5.2.4                h1de35cc_4    defaults
yaml                      0.1.7                         0    conda-forge
zeromq                    4.2.5                hfc679d8_3    conda-forge
zict                      0.1.3                      py_0    conda-forge
zlib                      1.2.11               h470a237_3    conda-forge
```
</p></details>



Discussion:
I am facing the same problem, it is new to me after upgrade conda to 4.5.6

Resolving patch:
diff --git a/conda/gateways/connection/__init__.py b/conda/gateways/connection/__init__.py
--- a/conda/gateways/connection/__init__.py
+++ b/conda/gateways/connection/__init__.py
@@ -6,7 +6,13 @@ def should_bypass_proxies_patched(should_bypass_proxies_func, url, no_proxy):
     # Monkey patch requests, per https://github.com/requests/requests/pull/4723
     if url.startswith("file://"):
         return True
-    return should_bypass_proxies_func(url, no_proxy)
+    try:
+        return should_bypass_proxies_func(url, no_proxy)
+    except TypeError:
+        # For versions of requests we shouldn't have to deal with.
+        # https://github.com/conda/conda/issues/7503
+        # https://github.com/conda/conda/issues/7506
+        return should_bypass_proxies_func(url)
 
 
 try:


Test patch: