Merge #442

442: Bump tokio from 1.8.1 to 1.9.0 r=pitkley a=dependabot[bot]

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.8.1 to 1.9.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/tokio-rs/tokio/releases">tokio's releases</a>.</em></p>
<blockquote>
<h2>Tokio v1.9.0</h2>
<h1>1.9.0 (July 19, 2021)</h1>
<h3>Added</h3>
<ul>
<li>net: allow customized I/O operations for <code>TcpStream</code> (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3888">#3888</a>)</li>
<li>sync: add getter for the mutex from a guard (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3928">#3928</a>)</li>
<li>task: expose nameable future for <code>TaskLocal::scope</code> (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3273">#3273</a>)</li>
</ul>
<h3>Fixed</h3>
<ul>
<li>Fix leak if output of future panics on drop (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3967">#3967</a>)</li>
<li>Fix leak in <code>LocalSet</code> (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3978">#3978</a>)</li>
</ul>
<h3>Changes</h3>
<ul>
<li>runtime: reorganize parts of the runtime (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3909">#3909</a>, <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3939">#3939</a>, <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3950">#3950</a>, <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3955">#3955</a>, <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3980">#3980</a>)</li>
<li>sync: clean up <code>OnceCell</code> (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3945">#3945</a>)</li>
<li>task: remove mutex in <code>JoinError</code> (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3959">#3959</a>)</li>
</ul>
<p><a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3273">#3273</a>: <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/pull/3273">tokio-rs/tokio#3273</a>
<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3888">#3888</a>: <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/pull/3888">tokio-rs/tokio#3888</a>
<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3909">#3909</a>: <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/pull/3909">tokio-rs/tokio#3909</a>
<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3928">#3928</a>: <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/pull/3928">tokio-rs/tokio#3928</a>
<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3934">#3934</a>: <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/pull/3934">tokio-rs/tokio#3934</a>
<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3939">#3939</a>: <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/pull/3939">tokio-rs/tokio#3939</a>
<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3945">#3945</a>: <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/pull/3945">tokio-rs/tokio#3945</a>
<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3950">#3950</a>: <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/pull/3950">tokio-rs/tokio#3950</a>
<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3955">#3955</a>: <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/pull/3955">tokio-rs/tokio#3955</a>
<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3959">#3959</a>: <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/pull/3959">tokio-rs/tokio#3959</a>
<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3967">#3967</a>: <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/pull/3967">tokio-rs/tokio#3967</a>
<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3978">#3978</a>: <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/pull/3978">tokio-rs/tokio#3978</a>
<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3980">#3980</a>: <a href="https://github-redirect.dependabot.com/tokio-rs/tokio/pull/3980">tokio-rs/tokio#3980</a></p>
<h2>Tokio 1.8.2</h2>
<p>Fixes a missed edge case from 1.8.1.</p>
<h3>Fixed</h3>
<ul>
<li>runtime: drop canceled future on next poll (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3965">#3965</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/tokio-rs/tokio/commit/b280c6dcd72b2607cde68d2b2192480932f48ecb"><code>b280c6d</code></a> chore: prepare Tokio v1.9.0 (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3961">#3961</a>)</li>
<li><a href="https://github.com/tokio-rs/tokio/commit/998dc5a2eb48bd0937b10bf0638b2f8346b5f9f5"><code>998dc5a</code></a> task: fix leak in LocalSet (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3978">#3978</a>)</li>
<li><a href="https://github.com/tokio-rs/tokio/commit/ced7992f6555d884cac452d177b094eb44a58a29"><code>ced7992</code></a> runtime: add large test and fix leak it found (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3967">#3967</a>)</li>
<li><a href="https://github.com/tokio-rs/tokio/commit/0cefa85bfa8a0d03b7a50eceff798ffa64f0bef9"><code>0cefa85</code></a> runtime: make scheduler non-optional (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3980">#3980</a>)</li>
<li><a href="https://github.com/tokio-rs/tokio/commit/2087f3e0ebb08d633d59c5f964b3901e68b3c038"><code>2087f3e</code></a> runtime: rework binding of new tasks (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3955">#3955</a>)</li>
<li><a href="https://github.com/tokio-rs/tokio/commit/5ae2855eaf29fc78687c6d17b0be35f8b4934788"><code>5ae2855</code></a> io: fix docs referring to clear_{read,write}_ready (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3957">#3957</a>)</li>
<li><a href="https://github.com/tokio-rs/tokio/commit/252004811f39c092adb04fdb177738b57c46cbe4"><code>2520048</code></a> sync: add getter for the mutex from a guard (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3928">#3928</a>)</li>
<li><a href="https://github.com/tokio-rs/tokio/commit/549e89e9cd2073ffa70f1bd12022c5543343be78"><code>549e89e</code></a> chore: use the loom mutex wrapper everywhere (<a href="https://github-redirect.dependabot.com/tokio-rs/tokio/issues/3958">#3958</a>)</li>
<li><a href="https://github.com/tokio-rs/tokio/commit/c8fc4927482a702c3a89bb8a2f158c430b402e78"><code>c8fc492</code></a> Merge remote-tracking branch 'origin/tokio-1.8.x' into merge-1.8</li>
<li><a href="https://github.com/tokio-rs/tokio/commit/714704253443787cc0c9a395b6d94947bcf26687"><code>7147042</code></a> chore: prepare Tokio v1.8.2 release</li>
<li>Additional commits viewable in <a href="https://github.com/tokio-rs/tokio/compare/tokio-1.8.1...tokio-1.9.0">compare view</a></li>
</ul>
</details>
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Cargo.lock

@@ -40,7 +40,7 @@ sloggers = "^2.0"
 strum = { version = "^0.21", features = ["derive"] }
 tempfile = "^3.2"
 time = "^0.2"
-tokio = "^1.8"
+tokio = "^1.9"
 toml = "^0.5"
 url = "^2.2"