Cannot run cargo anymore: failed to run `rustc` to learn about target-specific information

1

Hello,

I don't know if it is related, but after deleted ~/.cargo folder, I can no longer compile any rust project.

$ cargo new abc
$ cd abc
$ cargo build
error: failed to run `rustc` to learn about target-specific information

Caused by:
  could not execute process `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)

Some informations:

  • I am on linux
  • I installed rust via rustup (curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh)
$ rustup show
Default host: x86_64-unknown-linux-gnu
rustup home:  /home/jonathan/.rustup

stable-x86_64-unknown-linux-gnu (default)
rustc 1.44.1 (c7087fe00 2020-06-17)

$ rustc -Vv
rustc 1.44.1 (c7087fe00 2020-06-17)
binary: rustc
commit-hash: c7087fe00d2ba919df1d813c040a5d47e43b0fe7
commit-date: 2020-06-17
host: x86_64-unknown-linux-gnu
release: 1.44.1
LLVM version: 9.0

I tried uninstalling rustup, remove ~/.rustup and reinstall from scratch, but nothing help. I am stuck.

2

~/.cargo/bin is where rustup stores its binary shims of cargo, rustc, etc.

It seems like rm -rf ~/.cargo ~/.rustup then reinstalling should fix it, as far as I know rustup should not have any data outside those two directories that would affect it.

3

Oh, I see sccache in there. Did you use cargo install sccache to install it originally? It would have been in your ~/.cargo/bin as well then. Try removing it from your RUSTFLAGS or wherever you have enabled it. (I'd recommend using your package manager to install it to avoid issues like this).

4

Thanks @Nemo157. I obviously forgot that I defined an export RUSTC_WRAPPER=sccache in my profile!

Removing the export fixed my problem thanks :slight_smile:

1 Like
5

I do use package manager to install stuff. Most of the time I use pacman or its wrapper yay. For rust I might use rustup or cargo, but I never install stuff manually, unless I have no other choice.

But In this context, I have to say, I don't remember setting up sccache, nor why I did set it up :thinking:

6

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