= note: unsafe function cannot be called generically without an unsafe block
note: required by a bound in `ProcMacro::custom_derive`
--> $SRC_DIR/proc_macro/src/bridge/client.rs:LL:COL
- |
-LL | expand: impl Fn(crate::TokenStream) -> crate::TokenStream + Copy,
- | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `ProcMacro::custom_derive`
error: aborting due to previous error