From: kennytm <kennytm@gmail.com>
Date: Wed, 18 Oct 2017 17:59:49 +0000 (+0800)
Subject: Rollup merge of #45217 - SimonSapin:alloc-doc, r=steveklabnik
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;h=0350c2f783400b025713162ae312f54eaaad074f;p=rust.git

Rollup merge of #45217 - SimonSapin:alloc-doc, r=steveklabnik

Fix out of date unstable book entries for `alloc_*` features.

The `alloc_jemalloc` crate does not provide a type to use with `#[global_allocator]`, and (according to Alex) `extern crate alloc_jemalloc;` alone became a no-op when `#[global_allocator]` was introduced.
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0350c2f783400b025713162ae312f54eaaad074f