Cannot read new Cargo.lock files

[cod10129]

Cargo-geiger cannot read Cargo.lock files created by newer Cargo versions, which makes it unusable unless you use an older version of Cargo to generate a lockfile before running cargo geiger.

Repro

Install a version of Cargo >= 1.83, and cargo-geiger (tested on the latest release, 0.11.7).

cargo new geiger-test
cd geiger-test
cargo generate-lockfile
cargo geiger

Output:

error: Cargo("failed to parse lock file at: ~/geiger-test/Cargo.lock")

Expected output (reproducible if you use Cargo 1.82):

Metric output format: x/y
    x = unsafe code used by the build
    y = total unsafe code found in the crate

Symbols:
    🔒  = No `unsafe` usage found, declares #![forbid(unsafe_code)]
    ❓  = No `unsafe` usage found, missing #![forbid(unsafe_code)]
    ☢️  = `unsafe` usage found

Functions  Expressions  Impls  Traits  Methods  Dependency

0/0        0/0          0/0    0/0     0/0      ❓ geiger-test 0.1.0

0/0        0/0          0/0    0/0     0/0

[shinmao]

I also run into this issue with v1.84.0-nightly.

[oherrala]

Also can't read Cargo.toml workspace files with resolver = "3". This is also fixed by updating the cargo dependency.

resolver setting 3 is not valid, valid options are "1" or "2"