message: Update duplicate build targets test
diff: @@ -259,7 +259,9 @@ fn cargo_compile_duplicate_build_targets() {
  p.cargo("build")
  .with_stderr(
  "\
  -warning: file found to be present in multiple build targets: [..]main.rs
  +warning: file `[..]main.rs` found to be present in multiple build targets:
  + * `lib` target `main`
  + * `bin` target `foo`
  [COMPILING] foo v0.0.1 ([..])
  [FINISHED] [..]
  ",
  