1 error: `proc-macro` crate types currently cannot export any items other than functions tagged with `#[proc_macro]`, `#[proc_macro_derive]`, or `#[proc_macro_attribute]`
2 --> $DIR/pub-at-crate-root.rs:8:1
7 error: functions tagged with `#[proc_macro_derive]` must currently reside in the root of the crate
8 --> $DIR/pub-at-crate-root.rs:12:5
10 LL | pub fn bar(a: TokenStream) -> TokenStream {
11 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
13 error: functions tagged with `#[proc_macro_derive]` must be `pub`
14 --> $DIR/pub-at-crate-root.rs:19:1
16 LL | fn bar(a: proc_macro::TokenStream) -> proc_macro::TokenStream {
17 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
19 error: aborting due to 3 previous errors