Cargo build giving checksum mismatch error

[neetabisht]

Problem

Hi All,
I have cargo.toml file present in windows 11 machine where trying to use rumqtt 0.31.0 version.

But when i am running "cargo build" cli, I'm getting below error:

**$ cargo build
    Updating crates.io index
  Downloaded autocfg v0.1.8
error: failed to download replaced source registry `crates-io`

Caused by:
  failed to verify the checksum of `autocfg v0.1.8`**

can anyone please help me with this error.

Steps

steps:

1. Install rust
2. Install gitbash to run all commands.
3. Modify the cargo.toml file as per above screen shot.
4. execute "cargo build" cli.

Possible Solution(s)

No response

Notes

No response

Version

No response

[neetabisht]

$ rustup --version
rustup 1.26.0 (5af9b9484 2023-04-05)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: The currently active rustc version is rustc 1.75.0 (82e1608df 2023-12-21)

INNEBIS1@IN-L-7402183 MINGW64 /d/eventgrid_project/rust_project (master)
$

[weihanglo]

It seems you'v configured source replacement (a.k.a. mirrors). Check your .cargo/config.toml. Comment out [source] table and see if the original crates.io registry has the same issue.

[neetabisht]

@weihanglo I just installed Rust and created new project using "cargo new project-name" cli and executed "cargo build".
When i check ~/.cargo folder, I'm not able to see any config.toml file present.

[Eh2406]

If you look in your cargo.lock for the section about autocfg v0.1.8, what is there?

[arlosi]

Cargo's error for this case will indicate source replacement even when it's not explicitly configured due to the built-in sparse replacement of crates.io, so it's possible that no source replacement is configured here. I just opened #13433 to improve the errors.

Can you check if ~/.cargo/registry/cache/index.crates.io-6f17d22bba15001f/autocfg-0.1.8.crate exists? That's where it will be downloaded by default if a source replacement is not configured.

Another way to check (if you have nightly available) is to run cargo +nightly -Zunstable-options config get source. If it gives you an error, then no source replacement is configured.

[neetabisht]

~/.cargo/registry/cache/index.crates.io-6f17d22bba15001f/autocfg-0.1.8.crate it is not created for me.

[neetabisht]

There is no cache folder present under ~/.cargo/registry

INNEBIS1@IN-L-7402183 MINGW64 ~/.cargo/registry
$ pwd
/c/Users/INNEBIS1/.cargo/registry

INNEBIS1@IN-L-7402183 MINGW64 ~/.cargo/registry
$ ls -la
total 1
drwxr-xr-x 1 INNEBIS1 1049089 0 Feb 8 11:23 ./
drwxr-xr-x 1 INNEBIS1 1049089 0 Feb 8 15:25 ../
-rw-r--r-- 1 INNEBIS1 1049089 177 Feb 8 16:34 CACHEDIR.TAG
drwxr-xr-x 1 INNEBIS1 1049089 0 Feb 8 11:23 index/
INNEBIS1@IN-L-7402183 MINGW64 ~/.cargo/registry
$

Rather I have below file present for autocf.

$ cat ~/.cargo/registry/index/index.crates.io-6f17d22bba15001f/.cache/au/to/autocfg
etag: W/"5f15de4a723e10b3f9eaf048d693cccc"0.0.1{"name":"autocfg","vers":"0.0.1","deps":[],"cksum":"ea7663289d0f977de588bc604662f450e05e5ad47e728f93062394291b68be8f","features":{},"yanked":false}0.1.0{"name":"autocfg","vers":"0.1.0","deps":[],"cksum":"23213af7601f0f2d929f73d2a772804562cb09063f50bba9c361f86d6a0376f8","features":{},"yanked":false}0.1.1{"name":"autocfg","vers":"0.1.1","deps":[],"cksum":"4e5f34df7a019573fb8bdc7e24a2bfebe51a2a1d6bfdbaeccedb3c41fc574727","features":{},"yanked":false}0.1.2{"name":"autocfg","vers":"0.1.2","deps":[],"cksum":"a6d640bee2da49f60a4068a7fae53acde8982514ab7bae8b8cea9e88cbcfd799","features":{},"yanked":false}0.1.3{"name":"autocfg","vers":"0.1.3","deps":[],"cksum":"dfb37ca32a3d9d88f18d08bac8d28368b8ee1f14f8b08eb62999c51720035b55","features":{},"yanked":true}0.1.4{"name":"autocfg","vers":"0.1.4","deps":[],"cksum":"0e49efa51329a5fd37e7c79db4621af617cd4e3e5bc224939808d076077077bf","features":{},"yanked":false}0.1.5{"name":"autocfg","vers":"0.1.5","deps":[],"cksum":"22130e92352b948e7e82a49cdb0aa94f2211761117f29e052dd397c1ac33542b","features":{},"yanked":false}0.1.6{"name":"autocfg","vers":"0.1.6","deps":[],"cksum":"b671c8fb71b457dd4ae18c4ba1e59aa81793daacc361d82fcd410cef0d491875","features":{},"yanked":false}0.1.7{"name":"autocfg","vers":"0.1.7","deps":[],"cksum":"1d49d90015b3c36167a20fe2810c5cd875ad504b39cff3d4eae7977e6b7c1cb2","features":{},"yanked":false}1.0.0{"name":"autocfg","vers":"1.0.0","deps":[],"cksum":"f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d","features":{},"yanked":false}1.0.1{"name":"autocfg","vers":"1.0.1","deps":[],"cksum":"cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a","features":{},"yanked":false}1.1.0{"name":"autocfg","vers":"1.1.0","deps":[],"cksum":"d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa","features":{},"yanked":false}0.1.8{"name":"autocfg","vers":"0.1.8","deps":[{"name":"autocfg","req":"^1.1.0","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"}],"cksum":"0dde43e75fd43e8a1bf86103336bc699aa8d17ad1be60c76c0bdfd4828e19b78","features":{},"yanked":false}
INNEBIS1@IN-L-7402183 MINGW64 /d/eventgrid_project/rust_project_rumqtt/rumqtt (master)
$

[Eh2406]

The error you're getting "failed to verify the checksum of autocfg v0.1.8**" is being generated here. That is to say when cargo attempts to download autocfg v0.1.8, the file contents do not hash to "0dde43e75fd43e8a1bf86103336bc699aa8d17ad1be60c76c0bdfd4828e19b78"

[weihanglo]

0dde43e75fd43e8a1bf86103336bc699aa8d17ad1be60c76c0bdfd4828e19b78 is the correct checksum for autocfg@0.1.8 on crates.io. So perhaps you've downloaded the .crate file from a different location, or the .crate file is corrupted. In the latter case, you can remove ~/.cargo/registry/cache/ and do cargo fetch again to re-download.

[weihanglo]

I'm going to close due to inactivity. Feel free to reopen if you have run possible workarounds above and had new findings to share.