ci: collect a bit more information after recent OSX image update.

We shouldn't need the homebrew changes anymore at least :/

cirruslabs/macos-image-templates#37

Author: anarazel

.cirrus.yml

@@ -178,19 +178,17 @@ task:
     folder: ${HOMEBREW_CACHE}
   perl_cache:
     folder: ~/perl5
+  info_script:
+    - ls -l /cores/ || true ; echo $?
+    - whoami || true
+    - groups || true
   cpan_install_script:
     - perl -mIPC::Run -e 1 || cpan -T IPC::Run
+  homebrew_install_script:
+    - brew install --verbose make coreutils ccache
   core_install_script:
+    - ls -l
     - sudo chmod 777 /cores
-
-  # Unfortunately the cirrus images contain an old version of homebrew, which
-  # references a mirror that doesn't exist anymore. Turns out to be faster to
-  # upgrade homebrew than to have it fall back to building from source...
-  # https://github.com/cirruslabs/osx-images/issues/37
-  homebrew_install_script:
-    - unset HOMEBREW_NO_AUTO_UPDATE && brew install --verbose make coreutils ccache
-    - brew cleanup
-
   configure_script:
     - ./configure --prefix=$HOME/install --enable-cassert --enable-debug --enable-tap-tests --without-readline --with-posix-aio CC="ccache gcc" CFLAGS="-O0"
   build_script: