Function futures_diagnose::diagnose

Important traits for DiagnoseFuture<T>

impl<T> Future for DiagnoseFuture<T> where
    T: Future,  type Output = T::Output;

pub fn diagnose<T>(
    name: impl Into<Cow<'static, str>>, 
    inner: T
) -> DiagnoseFuture<T>

Wraps around a Future and adds diagnostics.