use std::error::Error;

pub trait AsDynError {
    fn as_dyn_error(&self) -> &(dyn Error + 'static);
}

impl<T: Error + 'static> AsDynError for T {
    #[inline]
    fn as_dyn_error(&self) -> &(dyn Error + 'static) {
        self
    }
}

impl AsDynError for dyn Error + 'static {
    #[inline]
    fn as_dyn_error(&self) -> &(dyn Error + 'static) {
        self
    }
}

impl AsDynError for dyn Error + Send + Sync + 'static {
    #[inline]
    fn as_dyn_error(&self) -> &(dyn Error + 'static) {
        self
    }
}

use std::error::Error;

pub trait AsDynError {
    fn as_dyn_error(&self) -> &(dyn Error + 'static);
}

impl<T: Error + 'static> AsDynError for T {
    fn as_dyn_error(&self) -> &(dyn Error + 'static) {
        self
    }
}

impl AsDynError for dyn Error + 'static {
    fn as_dyn_error(&self) -> &(dyn Error + 'static) {
        self
    }
}

impl AsDynError for dyn Error + Send + Sync + 'static {
    fn as_dyn_error(&self) -> &(dyn Error + 'static) {
        self
    }
}

--- 
+++ 
@@ -5,18 +5,21 @@
 }
 
 impl<T: Error + 'static> AsDynError for T {
+    #[inline]
     fn as_dyn_error(&self) -> &(dyn Error + 'static) {
         self
     }
 }
 
 impl AsDynError for dyn Error + 'static {
+    #[inline]
     fn as_dyn_error(&self) -> &(dyn Error + 'static) {
         self
     }
 }
 
 impl AsDynError for dyn Error + Send + Sync + 'static {
+    #[inline]
     fn as_dyn_error(&self) -> &(dyn Error + 'static) {
         self
     }
Make the trivial as_dyn_error impls inlinable
