warning: please specify `--format-version` flag explicitly to avoid compatibility problems
error: failed to download `lock_api v0.4.9`

Caused by:
  unable to get packages from source

Caused by:
  failed to parse manifest at `/home/mateo/.cargo/registry/src/github.com-1ecc6299db9ec823/lock_api-0.4.9/Cargo.toml`

Caused by:
  could not parse input as TOML

Caused by:
  TOML parse error at line 1, column 1
  1 |
    | ^
  Unexpected ``
  Expected key or end of input

1 Answer 1


If lately you get this error when compiling your code do this: go to .cargo/registry, then delete the src folder with rm -r src/

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