use libc_print::std_name::*;
// ...
foo().unwrap_or_else(|err| eprintln!("error: {:?}", err));
My best guess is that there needs to be some added block level and/or semicolon to get the macro call to compile in all cases without needing #![feature(stmt_expr_attributes)].
Offending excerpt from my code:
My best guess is that there needs to be some added block level and/or semicolon to get the macro call to compile in all cases without needing
#![feature(stmt_expr_attributes)]
.