Install `cargo-sysroot` fails

[jiangliu]

root@c235c7e9b6fd:/tdshim# cargo install cargo-sysroot
    Updating `ustc` index
  Installing cargo-sysroot v0.8.0
...
   Compiling cargo-sysroot v0.8.0
error[E0532]: expected tuple struct or tuple variant, found function `Ok`
  --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-61ef6e0cd06fb9b8/cargo-sysroot-0.8.0/src/util.rs:87:12
   |
87 |     if let Ok(to_meta) = to_meta {
   |            ^^ not a tuple struct or tuple variant
   |
help: consider importing one of these items instead
   |
2  | use core::result::Result::Ok;
   |
2  | use std::result::Result::Ok;
   |

error[E0532]: expected tuple struct or tuple variant, found function `Ok`
   --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-61ef6e0cd06fb9b8/cargo-sysroot-0.8.0/src/lib.rs:515:9
    |
515 |         Ok(_) => (),
    |         ^^ not a tuple struct or tuple variant
    |
help: consider importing one of these items instead
    |
4   | use core::result::Result::Ok;
    |
4   | use std::result::Result::Ok;
    |

For more information about this error, try `rustc --explain E0532`.
error: could not compile `cargo-sysroot` due to 2 previous errors
warning: build failed, waiting for other jobs to finish...
error: failed to compile `cargo-sysroot v0.8.0`, intermediate artifacts can be found at `/tmp/cargo-installqc6mEa`

Caused by:
  build failed

And toolchain used to install sysroot is

root@c235c7e9b6fd:/tdshim# rustup toolchain list
nightly-2021-08-20-x86_64-unknown-linux-gnu (default) (override)
1.58.1-x86_64-unknown-linux-gnu

[jiangliu]

It's a little strange.
git clone and then cargo build succeeds to build cargo-sysroot binary.
But cargo install cargo-sysroot fails.

[DianaNites]

Tried running with cargo install cargo-sysroot --locked, that fixed it

I'll investigate further at some point later, but for now that'll install it.

[DianaNites]

Found the issue

At some point anyhow added an identically named Ok function, and this code has a glob import.

The reason it works when built locally is that cargo by default only respects Cargo.lock locally

[DianaNites]

Cargo-sysroot 0.8.1 has been released to fix this issue