message: Fixed build script env var test
diff: @@ -179,7 +179,7 @@ fn custom_build_env_vars() {
  use std::env;
  fn main() {
  - assert_eq!(env::var("RUSTC_LINKER"), "/path/to/linker");
  + assert_eq!(env::var("RUSTC_LINKER").unwrap(), "/path/to/linker");
  }
  "#)
  .file("src/lib.rs", "")
  @@ -188,7 +188,7 @@ fn custom_build_env_vars() {
  // no crate type set => linker never called => build succeeds if and
  // only if build.rs succeeds, despite linker binary not existing.
  assert_that(
  - p.cargo("build").arg("--target").arg(&target).arg("-v"),
  + p.cargo("build").arg("--target").arg(&target),
  execs().with_status(0),
  );
  }
  