error[E0277]: the trait bound `vergen::feature::build::Build: vergen_lib::entries::Add` is not satisfied

[tjagh]

Look for similar bugs

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Description

building 0.8.0 on debian trixie fails.

Version

0.8.0

How to reproduce

Steps to reproduce the behavior in librespot e.g.

1. installed empty VM for testing (proxmox, trixie) (build failed on a media pc before, wanted a clean test env)
2. installed rust w. rustup
3. installed all possibly required libs
4. cargo install librespot

Host (what you are running librespot on):

• OS: linux / debian trixie
• Platform: x86 VM on AMD4 proxmox node

Additional context

none.

output of cargo install librespot:

error[E0277]: the trait bound `vergen::feature::build::Build: vergen_lib::entries::Add` is not satisfied
   --> /root/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/librespot-core-0.8.0/build.rs:16:27
    |
 16 |         .add_instructions(&build)?
    |                           ^^^^^^ unsatisfied trait bound
    |
    = help: the trait `vergen_lib::entries::Add` is not implemented for `vergen::feature::build::Build`
note: there are multiple different versions of crate `vergen_lib` in the dependency graph
   --> /root/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/vergen-lib-0.1.6/src/entries.rs:45:1
    |
 45 | pub trait Add {
    | ^^^^^^^^^^^^^ this is the expected trait
    |
   ::: /root/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/vergen-lib-9.1.0/src/entries.rs:45:1
    |
 45 | pub trait Add {
    | ------------- this is the found trait
    = help: you can use `cargo tree` to explore your dependency tree
help: the trait `vergen_lib::entries::Add` is implemented for `Gitcl`
   --> /root/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/vergen-gitcl-1.0.8/src/gitcl/mod.rs:910:1
    |
910 | impl AddEntries for Gitcl {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^
    = note: required for the cast from `&vergen::feature::build::Build` to `&dyn vergen_lib::entries::Add`

For more information about this error, try `rustc --explain E0277`.
error: could not compile `librespot-core` (build script) due to 1 previous error
warning: build failed, waiting for other jobs to finish...
error: failed to compile `librespot v0.8.0`, intermediate artifacts can be found at `/tmp/cargo-installZA1SFy`.

[photovoltex]

This sounds like a new (patch) version did break something.

Could you try installing with the --locked flag? This should in theory resolve your problem^^

[tjagh]

This sounds like a new (patch) version did break something.

Could you try installing with the --locked flag? This should in theory resolve your problem^^

thx photovoltex, i could build with --locked.

should i close this or let it open for the base issue ?

[photovoltex]

let it as-is, as there seems to be an issue somewhere, we just need to identify where and why^^. and besides that, it will also be helpful for others to resolve their issues

[SharliBeicon]

I'm facing this same error in my project as well (I use librespot as library). Problem appeared when I updated some dependencies and cleaned the lockfile.

It doesn't seems like an error with librespot itself, since I've been using the same version for a while. The error is upstream, specifically in vergen-gitcl which has a broken dependency specification.

vergen-gitcl depends on both:
- vergen, which brings vergen-lib v9.1.0 to the dependency tree
- vergen-lib directly, which resolves to v0.1.6

There is an open issue in their repo: rustyhorde/vergen#478