[fixup] Adapt build dependencies tests to Python2

Fixup "[test] Add tests for build dependencies"

src/zc/buildout/tests/test_all.py

@@ -3661,7 +3661,7 @@ def test_missing_setup_requires_fails():
     ...     versions = dict(withsetuprequires='0.1')) # doctest: +ELLIPSIS
     Traceback (most recent call last):
         ...
-    subprocess.CalledProcessError: ...pip...wheel... non-zero exit status 1.
+    subprocess.CalledProcessError: ...pip...wheel... non-zero exit status 1...
     >>> zc.buildout.easy_install.allow_picked_versions(True)
     False
     """
@@ -3711,7 +3711,7 @@ def test_missing_build_system_requires_fails():
     ...     # doctest: +ELLIPSIS
     Traceback (most recent call last):
         ...
-    subprocess.CalledProcessError: ...pip...wheel... non-zero exit status 1.
+    subprocess.CalledProcessError: ...pip...wheel... non-zero exit status 1...
     >>> zc.buildout.easy_install.allow_picked_versions(True)
     False
     """
@@ -3767,10 +3767,10 @@ def test_pin_setup_requires_without_setup_eggs():
     Getting distribution for 'withsetuprequires==0.1'.
       error: subprocess-exited-with-error
     <BLANKLINE>
-      × python setup.py egg_info did not run successfully.
+      ... python setup.py egg_info did not run successfully.
       │ exit code: 1
     ...
-    subprocess.CalledProcessError: ...pip...wheel... non-zero exit status 1.
+    subprocess.CalledProcessError: ...pip...wheel... non-zero exit status 1...
     <BLANKLINE>
     """
 
@@ -3821,10 +3821,10 @@ def test_pin_build_system_requires_without_setup_eggs():
     Getting distribution for 'withbuildsystemrequires==0.1'.
       error: subprocess-exited-with-error
     <BLANKLINE>
-      × Preparing metadata (pyproject.toml) did not run successfully.
+      ... Preparing metadata (pyproject.toml) did not run successfully.
       │ exit code: 1
     ...
-    subprocess.CalledProcessError: ...pip...wheel... non-zero exit status 1.
+    subprocess.CalledProcessError: ...pip...wheel... non-zero exit status 1...
     <BLANKLINE>
     """