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-rw-r--r--lib/bundler/graph.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/bundler/graph.rb b/lib/bundler/graph.rb
index 648754df29..5644e41079 100644
--- a/lib/bundler/graph.rb
+++ b/lib/bundler/graph.rb
@@ -142,7 +142,7 @@ module Bundler
g.output @output_format.to_sym => "#{@output_file}.#{@output_format}"
Bundler.ui.info "#{@output_file}.#{@output_format}"
rescue ArgumentError => e
- $stderr.puts "Unsupported output format. See Ruby-Graphviz/lib/graphviz/constants.rb"
+ warn "Unsupported output format. See Ruby-Graphviz/lib/graphviz/constants.rb"
raise e
end
end