[Pkg-rust-maintainers] Bug#1024304: rust-cargo-outdated - build-depends on obsolete version of rust-cargo.

[Peter Green]

Package: rust-cargo-outdated
Version: 0.10.2-3
Severity: serious

Rust-cargo-outdated depends on version 0.57 of rust-cargo, debian has 0.62.
There is a new upstream version, but it still only depends on version 0.60
of the cargo crate.

I tried patching the new upstream version to use version 0.62 of the cargo
crate but it failed with.

> error[E0599]: no method named `update` found for struct `Box<dyn Source>` in the current scope
>    --> src/cargo_ops/temp_project.rs:386:24
>     |
> 386 |                 source.update()?;
>     |                        ^^^^^^ method not found in `Box<dyn Source>`
> 
> error[E0599]: no method named `sort_by` found for enum `Poll` in the current scope
>    --> src/cargo_ops/temp_project.rs:390:26
>     |
> 390 |             query_result.sort_by(|a, b| b.version().cmp(a.version()));
>     |                          ^^^^^^^ method not found in `Poll<Vec<cargo::core::Summary>>`
> 
> error[E0599]: no method named `iter` found for enum `Poll` in the current scope
>    --> src/cargo_ops/temp_project.rs:397:42
>     |
> 397 |         let latest_result = query_result.iter().find(|summary| {
>     |                                          ^^^^ method not found in `Poll<Vec<cargo::core::Summary>>`
> 
> error[E0608]: cannot index into a value of type `Poll<Vec<cargo::core::Summary>>`
>    --> src/cargo_ops/temp_project.rs:430:21
>     |
> 430 |                     query_result[0].version()
>     |                     ^^^^^^^^^^^^^^^
> 
> error[E0608]: cannot index into a value of type `Poll<Vec<cargo::core::Summary>>`
>    --> src/cargo_ops/temp_project.rs:434:18
>     |
> 434 |                 &query_result[0]
>     |                  ^^^^^^^^^^^^^^^
> 
> Some errors have detailed explanations: E0599, E0608.
> For more information about an error, try `rustc --explain E0599`.
> error: could not compile `cargo-outdated` due to 5 previous errors

I will commit the work so far to debcargo-conf so that others can build on it.