Duplicate warnings of config on Windows OS When using git-bash

[linyihai]

Problem

This only happend when I use the git bash and in the /tmp folder

Recently, I found the cargo on Windows will output the warnings of config twice

1、with only config exists

cargo -vV
warning: `C:\Users\ticktockit\.cargo\config` is deprecated in favor of `config.toml`
note: if you need to support cargo 1.38 or earlier, you can symlink `config` to `config.toml`
warning: `C:\Users\ticktockit\.cargo\config` is deprecated in favor of `config.toml`
note: if you need to support cargo 1.38 or earlier, you can symlink `config` to `config.toml`
cargo 1.83.0-nightly (c1fa840a8 2024-08-29)
release: 1.83.0-nightly
commit-hash: c1fa840a85eca53818895901a53fae34247448b2
commit-date: 2024-08-29
host: x86_64-pc-windows-msvc
libgit2: 1.8.1 (sys:0.19.0 vendored)
libcurl: 8.9.0-DEV (sys:0.4.74+curl-8.9.0 vendored ssl:Schannel)
os: Windows 10.0.22631 (Windows 11 CoreCountrySpecific) [64-bit]

2. both config and config.toml exist

cargo -vV
warning: both `C:\Users\ticktockit\.cargo\config` and `C:\Users\ticktockit\.cargo\config.toml` exist. Using `C:\Users\ticktockit\.cargo\config`
warning: both `C:\Users\ticktockit\.cargo\config` and `C:\Users\ticktockit\.cargo\config.toml` exist. Using `C:\Users\ticktockit\.cargo\config`
cargo 1.83.0-nightly (c1fa840a8 2024-08-29)
release: 1.83.0-nightly
commit-hash: c1fa840a85eca53818895901a53fae34247448b2
commit-date: 2024-08-29
host: x86_64-pc-windows-msvc
libgit2: 1.8.1 (sys:0.19.0 vendored)
libcurl: 8.9.0-DEV (sys:0.4.74+curl-8.9.0 vendored ssl:Schannel)
os: Windows 10.0.22631 (Windows 11 CoreCountrySpecific) [64-bit]

Steps

1. make sure the C:\Users\[Your PC user account]\.cargo\config exists
2. using the git-bash
3. cd /tmp
4. run cargo -vV

Possible Solution(s)

It is not clear if this problem still exists in the latest version, but duplicate information needs to be removed

Notes

No response

Version

cargo 1.83.0-nightly (c1fa840 2024-08-29)
release: 1.83.0-nightly
commit-hash: c1fa840
commit-date: 2024-08-29
host: x86_64-pc-windows-msvc
libgit2: 1.8.1 (sys:0.19.0 vendored)
libcurl: 8.9.0-DEV (sys:0.4.74+curl-8.9.0 vendored ssl:Schannel)
os: Windows 10.0.22631 (Windows 11 CoreCountrySpecific) [64-bit]

[linyihai]

@rustbot label: +O-windows

[linyihai]

The question becomes even less clear, even on my WSL subsytem, it will output the warning twice

cargo -vV
warning: `/root/.cargo/config` is deprecated in favor of `config.toml`
note: if you need to support cargo 1.38 or earlier, you can symlink `config` to `config.toml`
warning: `/root/.cargo/config` is deprecated in favor of `config.toml`
note: if you need to support cargo 1.38 or earlier, you can symlink `config` to `config.toml`
cargo 1.83.0-nightly (a9a418d1a 2024-09-15)
release: 1.83.0-nightly
commit-hash: a9a418d1a22f29e7dfd034e3b93f15657e608a29
commit-date: 2024-09-15
host: x86_64-unknown-linux-gnu
libgit2: 1.8.1 (sys:0.19.0 vendored)
libcurl: 8.9.0-DEV (sys:0.4.74+curl-8.9.0 vendored ssl:OpenSSL/1.1.1w)
ssl: OpenSSL 1.1.1w  11 Sep 2023
os: Ubuntu 22.4.0 (jammy) [64-bit]

I don't think this output is a big deal, but I wonder if other people are having this problem, maybe it has something to do with the local configuration?

[linyihai]

This seems will happend in the same root

C:\Users\ticktockit>cargo -vV
warning: both `C:\Users\ticktockit\.cargo\config` and `C:\Users\ticktockit\.cargo\config.toml` exist. Using `C:\Users\ticktockit\.cargo\config`
warning: both `C:\Users\ticktockit\.cargo\config` and `C:\Users\ticktockit\.cargo\config.toml` exist. Using `C:\Users\ticktockit\.cargo\config`
cargo 1.83.0-nightly (a9a418d1a 2024-09-15)
release: 1.83.0-nightly
commit-hash: a9a418d1a22f29e7dfd034e3b93f15657e608a29
commit-date: 2024-09-15
host: x86_64-pc-windows-msvc
libgit2: 1.8.1 (sys:0.19.0 vendored)
libcurl: 8.9.0-DEV (sys:0.4.74+curl-8.9.0 vendored ssl:Schannel)
os: Windows 10.0.22631 (Windows 11 CoreCountrySpecific) [64-bit]

in the other root path, like D: disk, that won't warn twice

D:\>cargo -vV
warning: both `C:\Users\ticktockit\.cargo\config` and `C:\Users\ticktockit\.cargo\config.toml` exist. Using `C:\Users\ticktockit\.cargo\config`
cargo 1.83.0-nightly (a9a418d1a 2024-09-15)
release: 1.83.0-nightly
commit-hash: a9a418d1a22f29e7dfd034e3b93f15657e608a29
commit-date: 2024-09-15
host: x86_64-pc-windows-msvc
libgit2: 1.8.1 (sys:0.19.0 vendored)
libcurl: 8.9.0-DEV (sys:0.4.74+curl-8.9.0 vendored ssl:Schannel)
os: Windows 10.0.22631 (Windows 11 CoreCountrySpecific) [64-bit]

I have a solution to address this.

@rustbot claim