pub trait InstantExt {
// Required methods
fn print_elapsed(&self);
fn reset(&mut self);
fn eprint_elapsed(&self);
fn print_elapsed_with_msg(&self, msg: &str);
fn eprint_elapsed_with_msg(&self, msg: &str);
}pub trait InstantExt {
// Required methods
fn print_elapsed(&self);
fn reset(&mut self);
fn eprint_elapsed(&self);
fn print_elapsed_with_msg(&self, msg: &str);
fn eprint_elapsed_with_msg(&self, msg: &str);
}