Merge pull request #6807 from scpeters/formula_installer_rescue_already_attempted

FormulaInstaller: rescue already attempted install

Library/Homebrew/formula_installer.rb

@@ -598,6 +598,10 @@ class FormulaInstaller
     oh1 "Installing #{formula.full_name} dependency: #{Formatter.identifier(dep.name)}"
     fi.install
     fi.finish
+  rescue FormulaInstallationAlreadyAttemptedError
+    # We already attempted to install f as part of the dependency tree of
+    # another formula. In that case, don't generate an error, just move on.
+    nil
   rescue Exception # rubocop:disable Lint/RescueException
     ignore_interrupts do
       tmp_keg.rename(installed_keg) if tmp_keg && !installed_keg.directory?