rustc-wrapper in ~/.cargo/config.toml breaks builds

[rbtcollins]

Checklist

• I've looked through the issues and pull requests for similar reports

Describe your issue

In ~/.cargo/config.toml I have the following content:

[build]
rustc-wrapper = "c:\Users\USERNAME\.cargo\bin\sccache"

This breaks builds with cross:

...
$cross build --target x86_64-unknown-linux-gnu
error: failed to run `rustc` to learn about target-specific information

Caused by:
  could not execute process `c:\Users\robertc\.cargo\bin\sccache rustc - --crate-name ___ --print=file-names --crate-type bin --crate-type rlib --crate-type dylib --crate-type cdylib --crate-type staticlib --crate-type proc-macro --print=sysroot --print=cfg` (never executed)   

Caused by:
  No such file or directory (os error 2)

What target(s) are you cross-compiling for?

x86_64-unknown-linux-gnu

Which operating system is the host (e.g computer cross is on) running?

• macOS
• Windows
• Linux / BSD
• other OS (specify in description)

What architecture is the host?

• x86_64 / AMD64
• arm32
• arm64 (including Mac M1)

What container engine is cross using?

• docker
• podman
• other container engine (specify in description)

cross version

cross 0.2.5 (99b8069 2023-02-12)

Example

See above

Additional information / notes

No response

[Emilgardis]

See #914 and #360 which are the same

This is essentially a duplicate of #621

#931 could possible solve this.

for now, a simple solution that does not involve installing sccache in the container is

cross --config 'build.rustc-wrapper=""' build