cargo tree -d reports duplicates when the same dependency is included in dependencies and build-dependencies

[lopopolo]

Problem

cargo tree -d shows duplicates, but all of these duplicates show the same package version.

$ cargo tree -d -p artichoke-backend
regex v1.5.5
├── artichoke-backend v0.10.0 (/Users/lopopolo/dev/artichoke/artichoke/artichoke-backend)
└── spinoso-regexp v0.2.0 (/Users/lopopolo/dev/artichoke/artichoke/spinoso-regexp)
    └── artichoke-backend v0.10.0 (/Users/lopopolo/dev/artichoke/artichoke/artichoke-backend)

regex v1.5.5
└── parse-zoneinfo v0.3.0
    └── chrono-tz-build v0.0.2
        [build-dependencies]
        └── chrono-tz v0.6.1
            └── spinoso-time v0.2.0 (/Users/lopopolo/dev/artichoke/artichoke/spinoso-time)
                └── artichoke-backend v0.10.0 (/Users/lopopolo/dev/artichoke/artichoke/artichoke-backend)

regex-syntax v0.6.25
└── regex v1.5.5 (*)

regex-syntax v0.6.25
└── regex v1.5.5 (*)

Steps

Run cargo tree -d -p artichoke-backend as of https://github.com/artichoke/artichoke/tree/b1d3cd75b6f6051a6e18ee6d46694157002f366e.

Possible Solution(s)

No response

Notes

No response

Version

$ cargo version --verbose
cargo 1.58.0 (f01b232bc 2022-01-19)
release: 1.58.0
commit-hash: f01b232bc7f4d94f0c4603930a5a96277715eb8c
commit-date: 2022-01-19
host: x86_64-apple-darwin
libgit2: 1.3.0 (sys:0.13.23 vendored)
libcurl: 7.79.1 (sys:0.4.51+curl-7.80.0 system ssl:(SecureTransport) LibreSSL/3.3.5)
os: Mac OS 12.3.0 [64-bit]

[lopopolo]

I think this might be the same as #9599 because it is likely that regex is being built with fewer features in build dep mode.

[weihanglo]

I believe you are right. Run cargo tree -d -p artichoke-backend -f '{p} [{f}]' and you will find two regex-syntax using different features. Closing in favour of #9599.

Thanks for your report!