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Merged
tshepang merged 5 commits into from
Sep 18, 2026
Merged

Rustc pull update #3023

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b46a013
Fix test compiling Fuchsia with rust-under-test
erickt Apr 16, 2026
20067a3
Auto merge of #161583 - RalfJung:x86-sse-abi, r=nikic
bors Sep 18, 2026
5838df5
Auto merge of #162573 - erickt:fix-fuchsia-tests, r=jieyouxu
bors Sep 18, 2026
74aadbd
Prepare for merging from rust-lang/rust
invalid-email-address Sep 18, 2026
a8ce856
Merge ref '420ed2a0c3d7' from rust-lang/rust
invalid-email-address Sep 18, 2026
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2 changes: 1 addition & 1 deletion rust-version
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@@ -1 +1 @@
c999cef531ea9059e189e82fe0e82c5daf249bc9
420ed2a0c3d7225b1744266fd884d431b4d8cfe0
22 changes: 13 additions & 9 deletions src/tests/ecosystem-test-jobs/fuchsia.md
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Expand Up @@ -19,7 +19,11 @@ is merged.

If you are worried that a pull request might break the Fuchsia builder and want
to test it out before submitting it to the bors queue, simply ask bors to run
the try job that builds the Fuchsia integration: `@bors try jobs=x86_64-fuchsia`.
the try job that builds the Fuchsia integration:

```text
@bors try jobs=test-x86_64-fuchsia
```

## Building Fuchsia locally

Expand All @@ -33,24 +37,24 @@ simply run this command from your Rust checkout to download and build Fuchsia
using your local Rust toolchain.

```
src/ci/docker/run.sh x86_64-fuchsia
src/ci/docker/run.sh test-x86_64-fuchsia
```

See the [Testing with Docker](../docker.md) chapter for more details on how to run
and debug jobs with Docker.

Note that a Fuchsia checkout is *large* – as of this writing, a checkout and
build takes 46G of space – and as you might imagine, it takes a while to
build takes over 67G of space – and as you might imagine, it takes a while to
complete.

### Modifying the Fuchsia checkout

The main reason you would want to build Fuchsia locally is because you need to
investigate a regression. After running a Docker build, you'll find the Fuchsia
checkout inside the `obj/fuchsia` directory of your Rust checkout. If you
modify the `KEEP_CHECKOUT` line in the [build-fuchsia.sh] script to
`KEEP_CHECKOUT=1`, you can change the checkout as needed and rerun the build
command above. This will reuse all the build results from before.
checkout inside the `obj/test-x86_64-fuchsia/fuchsia` directory of your Rust
checkout. If you modify the `KEEP_CHECKOUT` line in the [build-fuchsia.sh]
script to `KEEP_CHECKOUT=1`, you can change the checkout as needed and rerun
the build command above. This will reuse all the build results from before.

You can find more options to customize the Fuchsia checkout in the
[build-fuchsia.sh] script.
Expand Down Expand Up @@ -158,8 +162,8 @@ rustc book][platform-support].

[regressions]: https://gist.github.com/tmandry/7103eba4bd6a6fb0c439b5a90ae355fa
[build-toolchain]: https://fuchsia.dev/fuchsia-src/development/build/rust_toolchain
[build-fuchsia.sh]: https://github.com/rust-lang/rust/blob/221e2741c39515a5de6da42d8c76ee1e132c2c74/src/ci/docker/host-x86_64/x86_64-fuchsia/build-fuchsia.sh
[build_fuchsia_from_rust_ci.sh]: https://cs.opensource.google/fuchsia/fuchsia/+/main:scripts/rust/build_fuchsia_from_rust_ci.sh?q=build_fuchsia_from_rust_ci&ss=fuchsia
[build-fuchsia.sh]: https://github.com/rust-lang/rust/blob/main/src/ci/docker/host-x86_64/test-x86_64-fuchsia/build-fuchsia.sh
[build_fuchsia_from_rust_ci.sh]: https://cs.opensource.google/fuchsia/fuchsia/+/main:scripts/rust/build_fuchsia_from_rust_ci.sh
[platform-support]: https://doc.rust-lang.org/nightly/rustc/platform-support/fuchsia.html
[GN]: https://gn.googlesource.com/gn/+/main#gn
[Ninja]: https://ninja-build.org/
Expand Down
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