RES: hardcode using `use_extern_macros` feature in std crate
RES: hardcode using `use_extern_macros` feature in std crate

Undin/intellij-rust,intellij-rust/intellij-rust,intellij-rust/intellij-rust,Undin/intellij-rust,Undin/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust,Undin/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust,intellij-rust/intellij-rust,intellij-rust/intellij-rust