message: Ensure newline in make/local
diff: @@ -8,7 +8,7 @@ def setupCXX(CXX = env.CXX) {
  unstash 'CmdStanSetup'
  stanc3_bin_url_str = params.stanc3_bin_url != "nightly" ? "\nSTANC3_TEST_BIN_URL=${params.stanc3_bin_url}\n" : ""
  - writeFile(file: "make/local", text: "CXX=${CXX} ${stanc3_bin_url_str}")
  + writeFile(file: "make/local", text: "CXX=${CXX} \n${stanc3_bin_url_str}")
  }
  def runTests(String prefix = "") {
  