From: bors <bors@rust-lang.org>
Date: Sun, 27 Dec 2020 04:14:20 +0000 (+0000)
Subject: Auto merge of #80400 - adlerd:hashclone, r=Mark-Simulacrum
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;h=0f42d47bd5352028fe297f5e759b7e3763d55cbb;p=rust.git

Auto merge of #80400 - adlerd:hashclone, r=Mark-Simulacrum

Use `clone_from` from `hashbrown::{HashMap,HashSet}`.

This change updates the `std` hash collections to use `hashbrown`'s `clone_from`, which was itself added in #70052. Deriving `Clone` does not add a `clone_from` impl and uses the trait default, which calls `clone`.

Fixes #28481
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0f42d47bd5352028fe297f5e759b7e3763d55cbb