tree 1c1f46e627d3e0fb6c433484e0ec092327902ec3
parent 4b726486b477c9832e045cf81d5959b8d955b7c5
author Alex Crichton <alex@alexcrichton.com> 1496434773 -0700
committer Alex Crichton <alex@alexcrichton.com> 1496434938 -0700

Fill out an unstable implementation

This is verified to compile and work against the current version of
rust-lang/rust#40939.