1 error: `proc-macro` crate types cannot export any items other than functions tagged with `#[proc_macro_derive]` currently
2 --> $DIR/pub-at-crate-root.rs:8:1
5 LL | | use proc_macro::TokenStream;
7 LL | | #[proc_macro_derive(B)]
13 error: functions tagged with `#[proc_macro_derive]` must currently reside in the root of the crate
14 --> $DIR/pub-at-crate-root.rs:12:5
16 LL | / pub fn bar(a: TokenStream) -> TokenStream {
22 error: functions tagged with `#[proc_macro_derive]` must be `pub`
23 --> $DIR/pub-at-crate-root.rs:19:1
25 LL | / fn bar(a: proc_macro::TokenStream) -> proc_macro::TokenStream {
31 error: aborting due to 3 previous errors