`pkgdev bugs`: unable to handle BDEPEND of `dev-lang/rust`

```console
$ git rev-parse HEAD
b0f5bb4eb056808b16b806a5e47f659da3d75402
$ pkgdev bugs =dev-lang/rust-1.86.0-r1
Checking =dev-lang/rust-1.86.0-r1 on 'amd64 arm arm64 ppc ppc64 sparc x86'
pkgdev bugs: error: unable to find match for restrictions: dev-lang/rust:1.86.0 , dev-lang/rust:1.85.1 , dev-lang/rust:1.85.0
```