# 1.45.0 pre-release testing

**URL:** <https://internals.rust-lang.org/t/1-45-0-pre-release-testing/12726>\
**Category:** announcements\
**Created:** [July 14, 2020, 12:50pm UTC](https://internals.rust-lang.org/t/1-45-0-pre-release-testing/12726 "2020-07-14T12:50:59Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Mark\_Simulacrum](https://sea2.discourse-cdn.com/flex002/user_avatar/internals.rust-lang.org/mark_simulacrum/32/2853_2.png) [@Mark\_Simulacrum](https://internals.rust-lang.org/u/Mark_Simulacrum)\
**Post date:** [July 14, 2020, 12:50pm UTC](https://internals.rust-lang.org/t/1-45-0-pre-release-testing/12726/1 "2020-07-14T12:50:59Z")

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The 1.45.0 pre-release is ready for testing. The release is scheduled for this Thursday, the 16th. Release notes can be found here: [https://github.com/rust-lang/rust/blob/stable/RELEASES.md](https://github.com/rust-lang/rust/blob/stable/RELEASES.md#version-1450-2020-07-16).

You can try it out locally with:

```nohighlight
RUSTUP_DIST_SERVER=https://dev-static.rust-lang.org rustup update stable

```

The index is [https://dev-static.rust-lang.org/dist/2020-07-13/index.html](https://dev-static.rust-lang.org/dist/2020-07-13/index.html).

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**Author:** ![semarie](https://sea2.discourse-cdn.com/flex002/user_avatar/internals.rust-lang.org/semarie/32/2012_2.png) [@semarie](https://internals.rust-lang.org/u/semarie)\
**Post date:** [July 15, 2020, 3:59pm UTC](https://internals.rust-lang.org/t/1-45-0-pre-release-testing/12726/2 "2020-07-15T15:59:09Z")

</div>

just to point to downstream that firefox78 could have some issues with rustc 1.45.0 : [#1640982 - rust 1.45 error: options `-C embed-bitcode=no` and `-C lto` are incompatible](https://bugzilla.mozilla.org/show_bug.cgi?id=1640982)

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<div class="post-metadata">

**Author:** ![cuviper](https://sea2.discourse-cdn.com/flex002/user_avatar/internals.rust-lang.org/cuviper/32/1897_2.png) [@cuviper](https://internals.rust-lang.org/u/cuviper)\
**Post date:** [July 15, 2020, 4:38pm UTC](https://internals.rust-lang.org/t/1-45-0-pre-release-testing/12726/3 "2020-07-15T16:38:35Z")

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[This comment](https://github.com/rust-lang/rust/issues/71848#issuecomment-628076527) intended that lto/embed-bitcode issue to get a compatibility note, but it seems to have been forgotten. Is it too late to add that?

edit: see [https://github.com/rust-lang/rust/pull/74374](https://github.com/rust-lang/rust/pull/74374)

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<div class="post-metadata">

**Author:** ![Mark\_Simulacrum](https://sea2.discourse-cdn.com/flex002/user_avatar/internals.rust-lang.org/mark_simulacrum/32/2853_2.png) [@Mark\_Simulacrum](https://internals.rust-lang.org/u/Mark_Simulacrum)\
**Post date:** [October 13, 2020, 4:38pm UTC](https://internals.rust-lang.org/t/1-45-0-pre-release-testing/12726/4 "2020-10-13T16:38:43Z")

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Closed on October 13, 2020, 4:38pm UTC

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