Add Docker image to run AArch64 Linux tests
This PR adds a Docker image to run the AArch64 Linux test suite on a native AArch64 host platform, which will be used in the future to run the test suite in our CI. The image will also be useful for ARM folks to ensure internally that the bugfixes they submit work.
This will be the first Docker image designed to run on a non-x86_64 host platform, and to prevent surprising behavior this PR moves all images requiring a x86_64 host in the `src/ci/docker/host-x86_64` directory. Paths and scripts are changed accordingly, and a helpful error message is added when someone tries to run an image on the wrong architecture:
```
Invalid image: aarch64-gnu
Note: the image exists for the aarch64 host architecture
Note: the current host architecture is x86_64
```
The old emulated and disabled `aarch64-gnu` builder is also removed in this PR.
This PR is best reviewed commit-by-commit.
r? @Mark-Simulacrum
Added restriction lint: pattern-type-mismatch
changelog: Added a new restriction lint `pattern-type-mismatch`. This lint is especially helpful for beginners learning about the magic behind pattern matching. (This explanation might be worth to include in the next changelog.)
Improvements for `type_repetition_in_bounds` lint
Some improvements for `type_repetition_in_bounds`:
- add a configurable threshold to trigger the lint (#4380). The lint won't trigger anymore if there are more bounds (strictly) than `conf.max_trait_bounds` on this type.
- take generic args into account over bounded type (#4323)
- don't lint for predicates generated in macros (#4326)
Fixes#4380,
Fixes#4323,
Fixes#4326,
Closes#3764
changelog: Fix multiple FPs in `type_repetition_in_bounds` and add a configuration option
Note: the #3764 has already been fixed but not closed
The current plan is that submodule tracks the `release` branch of
rust-analyzer, which is updated once a week.
rust-analyzer is a workspace (with a virtual manifest), the actual
binary is provide by `crates/rust-analyzer` package.
Note that we intentionally don't add rust-analyzer to `Kind::Test`,
for two reasons.
*First*, at the moment rust-analyzer's test suite does a couple of
things which might not work in the context of rust repository. For
example, it shells out directly to `rustup` and `rustfmt`. So, making
this work requires non-trivial efforts.
*Second*, it seems unlikely that running tests in rust-lang/rust repo
would provide any additional guarantees. rust-analyzer builds with
stable and does not depend on the specifics of the compiler, so
changes to compiler can't break ra, unless they break stability
guarantee. Additionally, rust-analyzer itself is gated on bors, so we
are pretty confident that test suite passes.
We're starting to include native aarch64 machines in our CI, but before
this commit the architecture wasn't included in the cache key for our
Docker images. This means there could be conflicts between images
produced on different architectures, hurting our CI times.
This commit fixes the problem by including the output of `uname -m` in
the cache key.
We need to add runners designed for an aarch64 host system, and it'd be
nice to return an error message if someone tries to run an image
designed for an host architecture in another one.
To start the work on this, this commit moves all the existing builders
in the host-x86_64 directory, and changes the run.sh script to look up
the image in the correct directory based on the host architecture.
Update cargo, rls
## cargo
14 commits in c26576f9adddd254b3dd63aecba176434290a9f6..fede83ccf973457de319ba6fa0e36ead454d2e20
2020-06-23 16:21:21 +0000 to 2020-07-02 21:51:34 +0000
- Fix overflow error on 32-bit. (rust-lang/cargo#8446)
- Exclude the target directory from backups using CACHEDIR.TAG (rust-lang/cargo#8378)
- CONTRIBUTING.md: Link to Zulip rather than Discord (rust-lang/cargo#8436)
- Update built-in help for features (rust-lang/cargo#8433)
- Update core-foundation requirement from 0.7.0 to 0.9.0 (rust-lang/cargo#8432)
- Parse `# env-dep` directives in dep-info files (rust-lang/cargo#8421)
- Move string interning to util (rust-lang/cargo#8419)
- Expose built cdylib artifacts in the Compilation structure (rust-lang/cargo#8418)
- Remove unused serde_derive dependency from the crates.io crate (rust-lang/cargo#8416)
- Remove unused remove_dir_all dependency (rust-lang/cargo#8412)
- Improve git error messages a bit (rust-lang/cargo#8409)
- Improve the description of Config.home_path (rust-lang/cargo#8408)
- Improve support for non-`master` main branches (rust-lang/cargo#8364)
- Document that OUT_DIR in JSON messages is an absolute path (rust-lang/cargo#8403)
## rls
2020-06-19 15:36:00 +0200 to 2020-06-30 23:34:52 +0200
- Update cargo (rust-lang-nursery/rls#1686)
