message: fix test source
diff: @@ -1238,10 +1238,11 @@ warning: be sure to add `[..]` to your PATH to be able to run the installed bina
  ).run();
  }
  +#[test]
  fn install_ignores_cargo_config() {
  pkg("bar", "0.0.1");
  - let p = project("foo")
  + let p = project()
  .file(
  "Cargo.toml",
  r#"
  