[Do Not Merge] Recreate issue 4270 in the main repo

.appveyor.yml

@@ -10,15 +10,12 @@ environment:
   # Encrypted to matthew-brett account, for now.
   WHEELHOUSE_UPLOADER_SECRET:
     secure: ozQ/OF7YF5bsfSd9CKAREE1YKWQy6ucciQ7446lFcJONOBG+/yvYtpPkpv4Dqrp7
-  NP_BUILD_DEP: "numpy==1.14.5"
-  NP_TEST_DEP: "numpy==1.14.5"
+  NP_BUILD_DEP: "numpy==1.13.3"
+  NP_TEST_DEP: "numpy==1.15.4"
   DAILY_COMMIT: master
 
   matrix:
-    - PYTHON: C:\Python36
     - PYTHON: C:\Python36-x64
-    - PYTHON: C:\Python37
-    - PYTHON: C:\Python37-x64
 
 init:
   - "ECHO \"%APPVEYOR_SCHEDULED_BUILD%\""
@@ -52,9 +49,10 @@ install:
   - curl https://raw.githubusercontent.com/chemeris/msinttypes/master/stdint.h -o skimage/external/tifffile/stdint.h"
 
   # Install the build dependencies of the project.
-  - pip install %NP_TEST_DEP%
+  - pip install %NP_BUILD_DEP%
   - pip install -r requirements\build.txt
-  - python setup.py bdist_wheel
+  - pip list
+  - python setup.py bdist_wheel -vv
   - ps: |
       # Upload artifact to Appveyor immediately after build
       ls dist -r | Foreach-Object {
@@ -80,6 +78,7 @@ test_script:
   # Check Python version just in case
   - python --version
   # Run unit tests with pytest
+  - pip list
   - pytest --pyargs skimage
   - cd ..
 

.travis.yml

@@ -5,8 +5,8 @@ env:
       - BUILD_COMMIT=master
       - PLAT=x86_64
       - UNICODE_WIDTH=32
-      - NP_BUILD_DEP="numpy==1.14.5"
-      - NP_TEST_DEP="numpy==1.14.5"
+      - NP_BUILD_DEP="numpy==1.13.3"
+      - NP_TEST_DEP="numpy==1.15.4"
       - GEN_DEPS="matplotlib networkx scipy pillow"
       - MANYLINUX_URL=https://5cf40426d9f06eb7461d-6fe47d9331aba7cd62fc36c7196769e4.ssl.cf2.rackcdn.com
       - WHEELHOUSE_UPLOADER_USERNAME=travis-worker
@@ -40,21 +40,10 @@ matrix:
       env:
         - MB_PYTHON_VERSION=3.6
         - PLAT=i686
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=3.7
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=3.7
-        - PLAT=i686
     - os: osx
       language: generic
       env:
         - MB_PYTHON_VERSION=3.6
-    - os: osx
-      language: generic
-      env:
-        - MB_PYTHON_VERSION=3.7
 
 before_install:
     - if [ "$TRAVIS_BRANCH" == "master" ]; then

config.sh

@@ -15,18 +15,20 @@ function pre_build {
 
 function pip_opts {
     # Define extra pip arguments
-    echo "--prefer-binary --find-links $EXTRA_WHEELS_URL" 
+    echo "--prefer-binary --find-links $EXTRA_WHEELS_URL"
 }
 
 function build_wheel {
     # Horrible set of build requirements installs too-recent numpy when using
     # default pip wheel command
+    pip list
     build_bdist_wheel $@
 }
 
 function run_tests {
     # Runs tests on installed distribution from an empty directory
     python --version
     echo "backend : agg" > matplotlibrc
+    pip list
     pytest --pyargs skimage
 }