class Bundler::Source::Rubygems

def fetch_all_remote_specs(&blk)
  begin
    # Fetch all specs, minus prerelease specs
    Gem::SpecFetcher.new.list(true, false).each(&blk)
    # Then fetch the prerelease specs
    begin
      Gem::SpecFetcher.new.list(false, true).each(&blk)
    rescue Gem::RemoteFetcher::FetchError
      Bundler.ui.warn "Could not fetch prerelease specs from #{self}"
    end
  rescue Gem::RemoteFetcher::FetchError
    Bundler.ui.warn "Could not reach #{self}"
  end
end