BuildError: report options to analytics.

Without this it's not easy to make much sense of these failures.

Library/Homebrew/exceptions.rb

@@ -352,6 +352,7 @@ end
 
 class BuildError < RuntimeError
   attr_reader :formula, :env
+  attr_accessor :options
 
   def initialize(formula, cmd, args, env)
     @formula = formula

Library/Homebrew/formula_installer.rb

@@ -261,17 +261,13 @@ class FormulaInstaller
       opoo "#{formula.full_name}: this formula has no #{option} option so it will be ignored!"
     end
 
-    options = []
-    if formula.head?
-      options << "--HEAD"
-    elsif formula.devel?
-      options << "--devel"
+    options = display_options(formula)
+    if show_header?
+      oh1 "Installing #{Formatter.identifier(formula.full_name)} #{options}".strip
     end
-    options += effective_build_options_for(formula).used_options.to_a
-    oh1 "Installing #{Formatter.identifier(formula.full_name)} #{options.join " "}" if show_header?
 
     if formula.tap && !formula.tap.private?
-      action = ([formula.full_name] + options).join(" ")
+      action = "#{formula.full_name} #{options}".strip
       Utils::Analytics.report_event("install", action)
 
       if installed_on_request
@@ -475,6 +471,18 @@ class FormulaInstaller
     BuildOptions.new(args, dependent.options)
   end
 
+  def display_options(formula)
+    options = []
+    if formula.head?
+      options << "--HEAD"
+    elsif formula.devel?
+      options << "--devel"
+    end
+    options += effective_build_options_for(formula).used_options.to_a
+    return if options.empty?
+    options.join(" ")
+  end
+
   def inherited_options_for(dep)
     inherited_options = Options.new
     u = Option.new("universal")
@@ -677,7 +685,8 @@ class FormulaInstaller
     if !formula.prefix.directory? || Keg.new(formula.prefix).empty_installation?
       raise "Empty installation"
     end
-  rescue Exception
+  rescue Exception => e
+    e.options = display_options(formula) if e.is_a?(BuildError)
     ignore_interrupts do
       # any exceptions must leave us with nothing installed
       formula.update_head_version

Library/Homebrew/utils/analytics.rb

@@ -65,7 +65,11 @@ module Utils
         return unless exception.formula.tap
         return unless exception.formula.tap.installed?
         return if exception.formula.tap.private?
-        report_event("BuildError", exception.formula.full_name)
+        action = exception.formula.full_name
+        if (options = exception.options)
+          action = "#{action} #{options}".strip
+        end
+        report_event("BuildError", action)
       end
     end
   end