message: Fix test target_in_environment_contains_lower_case
diff: @@ -357,26 +357,29 @@ fn custom_linker_env() {
  fn target_in_environment_contains_lower_case() {
  let p = project().file("src/main.rs", "fn main() {}").build();
  - let target_keys = [
  - "CARGO_TARGET_X86_64_UNKNOWN_LINUX_musl_LINKER",
  - "CARGO_TARGET_x86_64_unknown_linux_musl_LINKER",
  - ];
  -
  - for target_key in &target_keys {
  - let mut execs = p.cargo("build -v --target x86_64-unknown-linux-musl");
  - execs.env(target_key, "nonexistent-linker").with_status(101);
  + let target = rustc_host();
  + let env_key = format!(
  + "CARGO_TARGET_{}_LINKER",
  + target.to_lowercase().replace('-', "_")
  + );
  +
  + let mut execs = p.cargo("build -v --target");
  + execs.arg(target).env(&env_key, "nonexistent-linker");
  if cfg!(windows) {
  - execs.with_stderr_does_not_contain("warning:[..]");
  + // Windows env keys are case insensitive, so no warning, but it will
  + // fail due to the missing linker.
  + execs
  + .with_stderr_does_not_contain("warning:[..]")
  + .with_status(101);
  } else {
  execs.with_stderr_contains(format!(
  "warning: Environment variables are expected to use uppercase letters and underscores, \
  the variable `{}` will be ignored and have no effect",
  - target_key
  + env_key
  ));
  }
  execs.run();
  }
  -}
  #[cargo_test]
  fn cfg_ignored_fields() {
  