False positive in tokio

[mathstuf]

On tokio-rs/tokio#1656 with the -Z minimum-versions and commenting out the build-tests crate, I get this false positive report:

unused dependencies:
`tokio-net v0.2.0-alpha.6 (/home/boeckb/code/depot/lang-rust/proj-tokio/tokio/src/tokio-net)`
└─── (dev-)dependencies
     └─── "tokio-net"

Or at least it appears to be a false positive since there's no tokio-net dependency in…itself (not even an older version).

Attaching the save-analysis directory generated from the run.

cargo-udeps-tokio-false-positive.tar.gz

[qryxip]

When a lib target is found, cargo-udeps regards it as a dependency because bins, tests, and examples should depend on it. The save-analysis does not seem to contain tests. (test-cat is a bin target)

Currently, you need to run with --all-targets to find dependencies that are not used by any target.

[est31]

@qryxip btw as you seem around a lot, I've added you as collaborator to the project

[qryxip]

When a lib target is found, cargo-udeps regards it as a dependency because bins, tests, and examples should depend on it. The save-analysis does not seem to contain tests. (test-cat is a bin target)

After thinking about it, this it not necessary. We want to find unused dependencies, not connected components of graphs.