The file path in the diagnostic message contains duplicate separators on windows

[ahaoboy]

Problem

When using a relative path in a workspace subproject, the file path in the diagnostic message contains duplicate separators

happened

mpv-easy-ext\./src/main.rs:2:7

expected

mpv-easy-ext/src/main.rs:2:7

 cargo clippy
    Checking mpv-easy-ext v0.1.0 (C:\wt\clippy-path\mpv-easy-ext)
warning: unused variable: `a`
 --> mpv-easy-ext\./src/main.rs:2:7
  |
2 |   let a = 1;
  |       ^ help: if this is intentional, prefix it with an underscore: `_a`
  |
  = note: `#[warn(unused_variables)]` on by default

warning: `mpv-easy-ext` (bin "mpv") generated 1 warning
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s

Steps

git clone https://github.com/ahaoboy/cargo-clippy-path

cd cargo-clippy-path

cargo clippy

Possible Solution(s)

Use clean-path to transform the output path

Notes

No response

Version

cargo 1.81.0-nightly (154fdac39 2024-07-07)
release: 1.81.0-nightly
commit-hash: 154fdac39ae9629954e19e9986fd2cf2cdd8d964
commit-date: 2024-07-07
host: x86_64-pc-windows-msvc
libgit2: 1.8.1 (sys:0.19.0 vendored)
libcurl: 8.8.0-DEV (sys:0.4.73+curl-8.8.0 vendored ssl:Schannel)
os: Windows 10.0.22635 (Windows 11 Professional) [64-bit]

[ahaoboy]

I don't know if it's a problem with cargo itself or if a dependent library doesn't process the path for Windows. rust-lang/rust-clippy#13078

[epage]

Couple of questions

• Does this reproduce on stable?
• Does this reproduce with cargo check?
• Does cargo metadata show the non-cleaned path?

[epage]

Side note: I wonder if this is related to target work I did like #13849.

[ahaoboy]

cargo check

    Checking mpv-easy-ext v0.1.0 (C:\wt\clippy-path\mpv-easy-ext)
warning: unused variable: `a`
 --> mpv-easy-ext\./src/main.rs:2:7
  |
2 |   let a = 1;
  |       ^ help: if this is intentional, prefix it with an underscore: `_a`
  |
  = note: `#[warn(unused_variables)]` on by default

warning: `mpv-easy-ext` (bin "mpv") generated 1 warning
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s

 win…\clippy-path   main  

cargo -Vv

cargo 1.79.0 (ffa9cf99a 2024-06-03)
release: 1.79.0
commit-hash: ffa9cf99a594e59032757403d4c780b46dc2c43a
commit-date: 2024-06-03
host: x86_64-pc-windows-msvc
libgit2: 1.7.2 (sys:0.18.3 vendored)
libcurl: 8.6.0-DEV (sys:0.4.72+curl-8.6.0 vendored ssl:Schannel)
os: Windows 10.0.22635 (Windows 11 Professional) [64-bit]

cargo metadata

warning: please specify `--format-version` flag explicitly to avoid compatibility problems
{"packages":[{"name":"mpv-easy-ext","version":"0.1.0","id":"path+file:///C:/wt/clippy-path/mpv-easy-ext#0.1.0","license":"MIT","license_file":null,"description":"mpv-easy rust extension","source":null,"dependencies":[],"targets":[{"kind":["bin"],"crate_types":["bin"],"name":"mpv","src_path":"C:\\wt\\clippy-path\\mpv-easy-ext\\./src/main.rs","edition":"2021","doc":true,"doctest":false,"test":true}],"features":{},"manifest_path":"C:\\wt\\clippy-path\\mpv-easy-ext\\Cargo.toml","metadata":null,"publish":null,"authors":["ahaoboy"],"categories":[],"keywords":[],"readme":"README.md","repository":"https://github.com/mpv-easy/mpv-easy","homepage":null,"documentation":null,"edition":"2021","links":null,"default_run":null,"rust_version":null}],"workspace_members":["path+file:///C:/wt/clippy-path/mpv-easy-ext#0.1.0"],"workspace_default_members":["path+file:///C:/wt/clippy-path/mpv-easy-ext#0.1.0"],"resolve":{"nodes":[{"id":"path+file:///C:/wt/clippy-path/mpv-easy-ext#0.1.0","dependencies":[],"deps":[],"features":[]}],"root":null},"target_directory":"C:\\wt\\clippy-path\\target","version":1,"workspace_root":"C:\\wt\\clippy-path","metadata":null}

• Does this reproduce on stable?

Yes

• Does this reproduce with cargo check?

Yes

• Does cargo metadata show the non-cleaned path?

Yes "src_path":"C:\wt\clippy-path\mpv-easy-ext\./src/main.rs"