Nope, that was too new. Try another way to unbreak installing pip

.travis.yml

@@ -20,7 +20,7 @@ env:
         - PYTHONDONTWRITEBYTECODE=1
         - PIP_UPGRADE_STRATEGY=eager
         # Don't get warnings about Python 2 support being deprecated. We
-        # know.
+        # know. The env var works for pip 20.
         - PIP_NO_PYTHON_VERSION_WARNING=1
         - CC="ccache gcc"
         - CCACHE_NOCPP2=true

appveyor.yml

@@ -141,8 +141,6 @@ install:
           (New-Object Net.WebClient).DownloadFile('https://bitbucket.org/pypy/pypy/downloads/pypy2.7-v7.3.0-win32.zip', "${env:PYTMP}\pypy2-v7.3.0-win32.zip");
         }
         7z x -y "${env:PYTMP}\pypy2-v7.3.0-win32.zip" -oC:\ | Out-Null;
-        & "${env:PYTHON}\pypy.exe" "-mensurepip";
-
       }
       elseif (-not(Test-Path($env:PYTHON))) {
         & appveyor\install.ps1;
@@ -159,8 +157,10 @@ install:
   - "%PYEXE% -c \"import struct; print(struct.calcsize('P') * 8)\""
 
   # Upgrade to the latest version of pip to avoid it displaying warnings
-  # about it being out of date.
-  - "%CMD_IN_ENV% %PYEXE% -m pip install --disable-pip-version-check --user --upgrade pip"
+  # about it being out of date. Do this here instead of above in
+  # powershell because the annoying 'DEPRECATION:blahblahblah 2.7 blahblahblah'
+  # breaks powershell.
+  - "%CMD_IN_ENV% %PYEXE% -mensurepip -U --user"
 
   - ps: "if(Test-Path(\"${env:PYTHON}\\bin\")) {ls ${env:PYTHON}\\bin;}"
   - ps: "if(Test-Path(\"${env:PYTHON}\\Scripts\")) {ls ${env:PYTHON}\\Scripts;}"