Error: Compiler not supported: "error: Unrecognized option: \'E\'\n\n"

[mkesper]

On running the rustlings I get this error:
error: process didn't exit successfully: /home/mkesper/.cargo/bin/sccache /home/mkesper/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/bin/clippy-driver /home/mkesper/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/bin/rustc -vV (exit status: 2)
--- stderr
error: failed to execute compile
caused by: Compiler not supported: "error: Unrecognized option: 'E'\n\n"

Seems to be linked to this root cause: mozilla/sccache#1000

Installed versions:

~/g/m/rustlings (main|✔) $ sccache --version
sccache 0.8.2
~/g/m/rustlings (main|✔) $ cargo --version
cargo 1.81.0 (2dbb1af80 2024-08-20)
~/g/m/rustlings (main|✔) $ rustup --version
rustup 1.27.1 (54dd3d00f 2024-04-24)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: The currently active `rustc` version is `rustc 1.81.0 (eeb90cda1 2024-09-04)`
~/g/m/rustlings (main|✔) $ rustc --version
rustc 1.81.0 (eeb90cda1 2024-09-04)
~/g/m/rustlings (main|✔) $ which rustc
/home/mkesper/.cargo/bin/rustc
~/g/m/rustlings (main|✔) $ which sccache
/home/mkesper/.cargo/bin/sccache
~/g/m/rustlings (main|✔) $ which cargo
/home/mkesper/.cargo/bin/cargo

[mo8it]

This is a problem with sccache, not specific to Rustlings. Maybe just deactivate it. I don't have experience with it to help any further.

[mkesper]

Just to add info for others: I had to remove the line which sets RUSTC_WRAPPER from ~/.cargo/config.toml
cargo uninstall sccache alone was not sufficient.
Everything works again now!