good error when caching path that's deleted

1 files changed, 5 insertions, 0 deletions

diff --git a/lib/bundler/source/path.rb b/lib/bundler/source/path.rb
index 8cde7dc2cd..c80ac61f46 100644
--- a/lib/bundler/source/path.rb
+++ b/lib/bundler/source/path.rb
@@ -78,6 +78,11 @@ module Bundler
         app_cache_path = app_cache_path(custom_path)
         return unless Bundler.settings[:cache_all]
         return if expand(@original_path).to_s.index(Bundler.root.to_s) == 0
+
+        unless @original_path.exist?
+          raise GemNotFound, "Can't cache gem #{version_message(spec)} because #{to_s} is missing!"
+        end
+
         FileUtils.rm_rf(app_cache_path)
         FileUtils.cp_r("#{@original_path}/.", app_cache_path)
         FileUtils.touch(app_cache_path.join(".bundlecache"))