Merge #695

695: Update bindgen requirement from 0.56.0 to 0.57.0 r=toasteater a=dependabot[bot]

Updates the requirements on [bindgen](https://github.com/rust-lang/rust-bindgen) to permit the latest version.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/rust-lang/rust-bindgen/blob/master/CHANGELOG.md">bindgen's changelog</a>.</em></p>
<blockquote>
<h1>0.57.0</h1>
<p>Released 2021/02/01</p>
<h1>Added</h1>
<ul>
<li>Expose module-raw-lines to the CLI (<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1936">#1936</a>)</li>
<li>Added an option to fit macro constants to smaller types (<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1945">#1945</a>)</li>
<li>Add an option to respect C++ access specifiers on fields (<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1968">#1968</a>)</li>
</ul>
<h2>Fixed</h2>
<ul>
<li>Improved C++ auto-detection (<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1933">#1933</a>)</li>
<li>Fixed layout of bitfields in some edge cases (<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1950">#1950</a>)</li>
<li>Escape the dyn keyword properly (<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1951">#1951</a>)</li>
<li>Use absolute paths for unsaved files passed to clang (<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1857">#1857</a>).</li>
</ul>
<h1>0.56.0</h1>
<p>Released 2020/11/26</p>
<h2>Added</h2>
<ul>
<li>Objective-c bindings generate <code>From&lt;ChildClass&gt; for ParentClass</code> as well as <code>TryFrom&lt;ParentClass&gt; for ChildClass</code> (<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1883">#1883</a>[]).</li>
<li>Experimental dynamic library support via <code>dynamic_library_name</code> (<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1846">#1846</a>).</li>
<li>Option to disable deriving <code>Default</code> on a per-struct basis (<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1930">#1930</a>).</li>
</ul>
<h2>Changed</h2>
<ul>
<li>Objective-c bindings borrow self rather than take ownership (<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1883">#1883</a>[]).</li>
<li>Templates and enums now correctly use the same naming scheme as other types
(<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1891">#1891</a>).</li>
</ul>
<h2>Fixed</h2>
<ul>
<li>Constructors in wasm32 now return a value. (<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1877">#1877</a>).</li>
<li>Fixed objective-c protocol impl blocks for parent classes's protocols (<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1883">#1883</a>[]).</li>
</ul>
<p><a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1883">#1883</a>: <a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1883">rust-lang/rust-bindgen#1883</a></p>
<hr />
<h1>0.55.1</h1>
<p>Released 2020/08/24.</p>
<h2>Fixed</h2>
<ul>
<li>Fixed a regression where anonymous enums referenced by members or such won't
generate valid Rust code. (<a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1882">#1882</a>).</li>
</ul>
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</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/rust-lang/rust-bindgen/commit/5ca2fc7a0221cacde41fd60b0ce485ee5ab8dac3"><code>5ca2fc7</code></a> v0.57.0</li>
<li><a href="https://github.com/rust-lang/rust-bindgen/commit/c509ef12acd198ffdde2af02148002257b60912a"><code>c509ef1</code></a> Add failing regression test for <a href="https://github-redirect.dependabot.com/rust-lang/rust-bindgen/issues/1973">#1973</a>.</li>
<li><a href="https://github.com/rust-lang/rust-bindgen/commit/e0f06c7fb2c59ab1154a4aba92cb885b1342a2fc"><code>e0f06c7</code></a> Generate fields as non-pub if they would be access restricted in C++.</li>
<li><a href="https://github.com/rust-lang/rust-bindgen/commit/51778893c4cb18eb11cbfe83a72046f7cb0f3eac"><code>5177889</code></a> Use absolute paths for unsaved files passed to clang and prepend -include dir...</li>
<li><a href="https://github.com/rust-lang/rust-bindgen/commit/9de0d64fc041633c6d0a386a577ddf8ba25dafc3"><code>9de0d64</code></a> Update mdbook</li>
<li><a href="https://github.com/rust-lang/rust-bindgen/commit/922655f33646b7a126f4c39fb7df60a122d7eb1b"><code>922655f</code></a> ci: update mdbook.</li>
<li><a href="https://github.com/rust-lang/rust-bindgen/commit/8945fa637e6e603f8d66fe60f7b5ae54d4134703"><code>8945fa6</code></a> book: Touch the book to ensure that GH actions deploy works.</li>
<li><a href="https://github.com/rust-lang/rust-bindgen/commit/faf8b3edbaeb591315fc6f370c1228b8caf9860f"><code>faf8b3e</code></a> ci: Move the remaining CI tasks (updating the book) to GitHub actions.</li>
<li><a href="https://github.com/rust-lang/rust-bindgen/commit/fde75f68e701b2f4b52a3655afba612187e20687"><code>fde75f6</code></a> ci: Switch most CI to GitHub actions.</li>
<li><a href="https://github.com/rust-lang/rust-bindgen/commit/afa50fa1add6aca654da3fe009258e57f4fcd4f2"><code>afa50fa</code></a> tests: Remove unnecessary system header include that makes macos unhappy</li>
<li>Additional commits viewable in <a href="https://github.com/rust-lang/rust-bindgen/compare/v0.56.0...v0.57.0">compare view</a></li>
</ul>
</details>
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</details>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: bors[bot]

gdnative-sys/Cargo.toml

@@ -15,7 +15,7 @@ edition = "2018"
 libc = "0.2"
 
 [build-dependencies]
-bindgen = { version = "0.56.0", default-features = false, features = ["runtime"] }
+bindgen = { version = "0.57.0", default-features = false, features = ["runtime"] }
 proc-macro2 = "1.0.6"
 quote = "1.0.2"
 miniserde = "=0.1.13"