Rust Benchmark (Vec)

Hello.

I have encountered an unexpected error while attempting to benchmark vec and have a question about it. To use the vec.rs file located in rust/library/alloc/benches , I added the following code to my Cargo.toml :

[[bench]]
name = "vec_bench"
path = "benches/vec.rs"
harness = false


However, I am encountering the following error.

If anyone has experienced and resolved a similar issue or has succeeded in benchmarking, I would appreciate it if you could provide guidance.

my Rust version is rustc 1.74.0-nightly (9f5fc1bd4 2023-09-02) .

The repository with the Rust compiler works differently from ordinary cargo in normal projects. See this guide. I recommend that you create a separate project outside of the Rust compiler and do your benchmark there.

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