[Migrated] Minor Bug: Misleading error message when compile succeeds but no *.spv was found

Issue automatically imported from old repo: https://github.com/EmbarkStudios/rust-gpu/issues/955
Old labels: t: enhancement
Originally creatd by Firestar99 on 2022-11-30T14:32:49Z

If you compile a crate with rust-gpu but forget to add

[lib]
crate-type = ["lib", "dylib"]

in it's cargo.toml rust-gpu will error out with: Artifact created when compilation succeeded.
This Error is outright wrong: What actually happened is that compilation succeeded but NO *.spv artifact was found.

The error is thrown in crates/spirv-builder/src/lib.rs line 538, at the end of the invoke_rustc() method.
I'd like to suggest replacing this message with Compilation succeeded but no .spv Artifact was created! Make sure the crate-type includes \"dylib\".

Abre crates/spirv-builder/src/lib.rs e inspecciona la línea 538 al final de invoke_rustc(). Confirma cómo se alcanza el caso sin artefacto después de que la compilación se complete correctamente. Se considera terminado cuando el mensaje de error explica con precisión que no se creó ningún artefacto .spv y señala la configuración requerida de crate-type.