message: Trim the bench test so it cannot be non-deterministic
diff: @@ -1493,7 +1493,6 @@ fn json_artifact_includes_executable_for_benchmark() {
  }
  let p = project()
  - .file("src/main.rs", "fn main() {}")
  .file(
  "benches/benchmark.rs",
  r#"
  @@ -1510,40 +1509,6 @@ fn json_artifact_includes_executable_for_benchmark() {
  p.cargo("bench --no-run --message-format=json")
  .with_json(r#"
  - {
  - "executable": "[..]/foo/target/release/foo[EXE]",
  - "features": [],
  - "filenames": "{...}",
  - "fresh": false,
  - "package_id": "foo 0.0.1 ([..])",
  - "profile": "{...}",
  - "reason": "compiler-artifact",
  - "target": {
  - "crate_types": [ "bin" ],
  - "kind": [ "bin" ],
  - "edition": "2015",
  - "name": "foo",
  - "src_path": "[..]/foo/src/main.rs"
  - }
  - }
  -
  - {
  - "executable": "[..]/foo/target/release/foo-[..][EXE]",
  - "features": [],
  - "filenames": "{...}",
  - "fresh": false,
  - "package_id": "foo 0.0.1 ([..])",
  - "profile": "{...}",
  - "reason": "compiler-artifact",
  - "target": {
  - "crate_types": [ "bin" ],
  - "kind": [ "bin" ],
  - "edition": "2015",
  - "name": "foo",
  - "src_path": "[..]/foo/src/main.rs"
  - }
  - }
  -
  {
  "executable": "[..]/foo/target/release/benchmark-[..][EXE]",
  "features": [],
  