Can't build proc-macro-hack 0.5.6 on Fedora Rawhide

[ignatenkobrain]

BUILDSTDERR: error[E0382]: capture of moved value: `vis`
BUILDSTDERR:    --> src/lib.rs:425:14
BUILDSTDERR:     |
BUILDSTDERR: 414 |     let crate_prefix = vis.map(|_| quote!($crate::));
BUILDSTDERR:     |                        --- value moved here
BUILDSTDERR: ...
BUILDSTDERR: 425 |         .map(|Macro { name, export_as }| {
BUILDSTDERR:     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ value captured here after move
BUILDSTDERR:     |
BUILDSTDERR:     = note: move occurs because `vis` has type `std::option::Option<syn::token::Pub>`, which does not implement the `Copy` trait

Might be related of using syn v0.15.33, but not sure. Testing this more.

[dtolnay]

Thanks! It looks like Syn tokens have Copy if syn/clone-impls is enabled, which we don't enable in proc-macro-hack, but Cargo seems to enable anyway because one of our dev-dependencies depends on Syn with default features which includes clone-impls.

I released proc-macro-hack 0.5.7 which depends on syn with clone-impls enabled.

[ignatenkobrain]

Thanks! Building 0.5.7 for Fedora right away.