Auto merge of #26914 - servo:dependabot/cargo/futures-util-0.3.5, r=jdm

build(deps): bump futures-util from 0.3.4 to 0.3.5

Bumps [futures-util](https://github.com/rust-lang/futures-rs) from 0.3.4 to 0.3.5.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/rust-lang/futures-rs/releases">futures-util's releases</a>.</em></p>
<blockquote>
<h2>0.3.5</h2>
<ul>
<li>Added <code>StreamExt::flat_map</code>.</li>
<li>Added <code>StreamExt::ready_chunks</code>.</li>
<li>Added <code>*_unpin</code> methods to <code>SinkExt</code>.</li>
<li>Added a <code>cancellation()</code> future to <code>oneshot::Sender</code>.</li>
<li>Added <code>reunite</code> method to <code>ReadHalf</code> and <code>WriteHalf</code>.</li>
<li>Added <code>Extend</code> implementations for <code>Futures(Un)Ordered</code> and <code>SelectAll</code>.</li>
<li>Added support for reexporting the <code>join!</code> and <code>select!</code> macros.</li>
<li>Added <code>no_std</code> support for the <code>pending!</code> and <code>poll!</code> macros.</li>
<li>Added <code>Send</code> and <code>Sync</code> support for <code>AssertUnmoved</code>.</li>
<li>Fixed a bug where <code>Shared</code> wasn't relinquishing control to the executor.</li>
<li>Removed the <code>Send</code> bound on the output of <code>RemoteHandle</code>.</li>
<li>Relaxed bounds on <code>FuturesUnordered</code>.</li>
<li>Reorganized internal tests to work under different <code>--feature</code>s.</li>
<li>Reorganized the bounds on <code>StreamExt::forward</code>.</li>
<li>Removed and replaced a large amount of internal <code>unsafe</code>.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/rust-lang/futures-rs/blob/master/CHANGELOG.md">futures-util's changelog</a>.</em></p>
<blockquote>
<h1>0.3.5 - 2020-05-08</h1>
<ul>
<li>Added <code>StreamExt::flat_map</code>.</li>
<li>Added <code>StreamExt::ready_chunks</code>.</li>
<li>Added <code>*_unpin</code> methods to <code>SinkExt</code>.</li>
<li>Added a <code>cancellation()</code> future to <code>oneshot::Sender</code>.</li>
<li>Added <code>reunite</code> method to <code>ReadHalf</code> and <code>WriteHalf</code>.</li>
<li>Added <code>Extend</code> implementations for <code>Futures(Un)Ordered</code> and <code>SelectAll</code>.</li>
<li>Added support for reexporting the <code>join!</code> and <code>select!</code> macros.</li>
<li>Added <code>no_std</code> support for the <code>pending!</code> and <code>poll!</code> macros.</li>
<li>Added <code>Send</code> and <code>Sync</code> support for <code>AssertUnmoved</code>.</li>
<li>Fixed a bug where <code>Shared</code> wasn't relinquishing control to the executor.</li>
<li>Removed the <code>Send</code> bound on the output of <code>RemoteHandle</code>.</li>
<li>Relaxed bounds on <code>FuturesUnordered</code>.</li>
<li>Reorganized internal tests to work under different <code>--feature</code>s.</li>
<li>Reorganized the bounds on <code>StreamExt::forward</code>.</li>
<li>Removed and replaced a large amount of internal <code>unsafe</code>.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="4ceafb384c"><code>4ceafb3</code></a> Stage 0.3.5</li>
<li><a href="5b91728e10"><code>5b91728</code></a> Drop unneeded Send/Sync bound from AssertUnmoved</li>
<li><a href="4b930bb470"><code>4b930bb</code></a> Implement Send + Sync for AssertUnmoved</li>
<li><a href="3bf5ac99e9"><code>3bf5ac9</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/rust-lang/futures-rs/issues/2128">#2128</a> from Diggsey/snip</li>
<li><a href="1b44548be7"><code>1b44548</code></a> Merge branch 'master' into snip</li>
<li><a href="32005e3f74"><code>32005e3</code></a> fix: Shared must relinquish control to the executor if repolled</li>
<li><a href="dc06edaf54"><code>dc06eda</code></a> Update pin-utils to 0.1</li>
<li><a href="dc00793b38"><code>dc00793</code></a> Make ready and lazy's panic messages easy to understand</li>
<li><a href="127b244ecd"><code>127b244</code></a> Allow pending! and poll! in no_std</li>
<li><a href="dfc6673946"><code>dfc6673</code></a> Update futures-util/src/future/future/flatten.rs</li>
<li>Additional commits viewable in <a href="https://github.com/rust-lang/futures-rs/compare/0.3.4...0.3.5">compare view</a></li>
</ul>
</details>
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</details>

Cargo.lock

@@ -1624,9 +1624,9 @@ dependencies = [
 
 [[package]]
 name = "futures-macro"
-version = "0.3.4"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a5081aa3de1f7542a794a397cde100ed903b0630152d0973479018fd85423a7"
+checksum = "d0b5a30a4328ab5473878237c447333c093297bded83a4983d10f4deea240d39"
 dependencies = [
  "proc-macro-hack",
  "proc-macro2 1.0.17",
@@ -1651,13 +1651,14 @@ dependencies = [
 
 [[package]]
 name = "futures-util"
-version = "0.3.4"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22766cf25d64306bedf0384da004d05c9974ab104fcc4528f1236181c18004c5"
+checksum = "8764574ff08b701a084482c3c7031349104b07ac897393010494beaa18ce32c6"
 dependencies = [
  "futures-core",
  "futures-macro",
  "futures-task",
+ "pin-project",
  "pin-utils",
  "proc-macro-hack",
  "proc-macro-nested",
@@ -4064,10 +4065,30 @@ dependencies = [
 ]
 
 [[package]]
-name = "pin-utils"
-version = "0.1.0-alpha.4"
+name = "pin-project"
+version = "0.4.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5894c618ce612a3fa23881b152b608bafb8c56cfc22f434a3ba3120b40f7b587"
+checksum = "12e3a6cdbfe94a5e4572812a0201f8c0ed98c1c452c7b8563ce2276988ef9c17"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "0.4.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a0ffd45cf79d88737d7cc85bfd5d2894bee1139b356e616fe85dc389c61aaf7"
+dependencies = [
+ "proc-macro2 1.0.17",
+ "quote 1.0.2",
+ "syn",
+]
+
+[[package]]
+name = "pin-utils"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
 [[package]]
 name = "pixels"