message: fixed cargo fmt error regarding unknown escape char.
diff: @@ -327,11 +327,9 @@ fn missing_current_working_directory() {
  cargo_process("install .")
  .with_status(101)
  .with_stderr(
  - "\
  -error: To install the binaries for the package in current working \
  + "To install the binaries for the package in current working \
  directory use `cargo install --path .`. \n\
  -Use `cargo build` if you want to simply build the package.
  -",
  + Use `cargo build` if you want to simply build the package.",
  )
  .run();
  }
  