## Summary
Use `Type::Divergent` to avoid "too many iterations" panic on an
infinitely-nested tuple in an implicit instance attribute.
The regression here is from checking all tuple elements to see if they
contain a Divergent type. It's 5% on one project, 1% on another, and
zero on the rest. I spent some time looking into eliminating this
regression by tracking a flag on inference results to note if they could
possibly contain any Divergent type, but this doesn't really work --
there are too many different ways a type containing a Divergent type
could enter an inference result. Still thinking about whether there are
other ways to reduce this. One option is if we see certain kinds of
non-atomic types that are commonly expensive to check for Divergent, we
could make `has_divergent_type` a Salsa query on those types.
## Test Plan
Added mdtest.
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [bitflags](https://redirect.github.com/bitflags/bitflags) |
workspace.dependencies | patch | `2.9.3` -> `2.9.4` |
---
> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.
---
### Release Notes
<details>
<summary>bitflags/bitflags (bitflags)</summary>
###
[`v2.9.4`](https://redirect.github.com/bitflags/bitflags/blob/HEAD/CHANGELOG.md#294)
[Compare
Source](https://redirect.github.com/bitflags/bitflags/compare/2.9.3...2.9.4)
#### What's Changed
- Add Cargo features to readme by
[@​KodrAus](https://redirect.github.com/KodrAus) in
[#​460](https://redirect.github.com/bitflags/bitflags/pull/460)
**Full Changelog**:
<https://github.com/bitflags/bitflags/compare/2.9.3...2.9.4>
</details>
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This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [clap](https://redirect.github.com/clap-rs/clap) |
workspace.dependencies | patch | `4.5.46` -> `4.5.47` |
---
> [!WARNING]
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---
### Release Notes
<details>
<summary>clap-rs/clap (clap)</summary>
###
[`v4.5.47`](https://redirect.github.com/clap-rs/clap/blob/HEAD/CHANGELOG.md#4547---2025-09-02)
[Compare
Source](https://redirect.github.com/clap-rs/clap/compare/v4.5.46...v4.5.47)
##### Features
- Added `impl FromArgMatches for ()`
- Added `impl Args for ()`
- Added `impl Subcommand for ()`
- Added `impl FromArgMatches for Infallible`
- Added `impl Subcommand for Infallible`
##### Fixes
- *(derive)* Update runtime error text to match `clap`
</details>
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This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
|
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| workspace.dependencies | patch | `0.3.50` -> `0.3.51` |
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This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [log](https://redirect.github.com/rust-lang/log) |
workspace.dependencies | patch | `0.4.27` -> `0.4.28` |
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### Release Notes
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<summary>rust-lang/log (log)</summary>
###
[`v0.4.28`](https://redirect.github.com/rust-lang/log/blob/HEAD/CHANGELOG.md#0428---2025-09-02)
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This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [tracing-subscriber](https://tokio.rs)
([source](https://redirect.github.com/tokio-rs/tracing)) |
workspace.dependencies | patch | `0.3.19` -> `0.3.20` |
---
> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.
### GitHub Vulnerability Alerts
####
[CVE-2025-58160](https://redirect.github.com/tokio-rs/tracing/security/advisories/GHSA-xwfj-jgwm-7wp5)
### Impact
Previous versions of tracing-subscriber were vulnerable to ANSI escape
sequence injection attacks. Untrusted user input containing ANSI escape
sequences could be injected into terminal output when logged,
potentially allowing attackers to:
- Manipulate terminal title bars
- Clear screens or modify terminal display
- Potentially mislead users through terminal manipulation
In isolation, impact is minimal, however security issues have been found
in terminal emulators that enabled an attacker to use ANSI escape
sequences via logs to exploit vulnerabilities in the terminal emulator.
### Patches
`tracing-subscriber` version 0.3.20 fixes this vulnerability by escaping
ANSI control characters in when writing events to destinations that may
be printed to the terminal.
### Workarounds
Avoid printing logs to terminal emulators without escaping ANSI control
sequences.
### References
https://www.packetlabs.net/posts/weaponizing-ansi-escape-sequences/
### Acknowledgments
We would like to thank [zefr0x](http://github.com/zefr0x) who
responsibly reported the issue at `security@tokio.rs`.
If you believe you have found a security vulnerability in any tokio-rs
project, please email us at `security@tokio.rs`.
---
### Release Notes
<details>
<summary>tokio-rs/tracing (tracing-subscriber)</summary>
###
[`v0.3.20`](https://redirect.github.com/tokio-rs/tracing/releases/tag/tracing-subscriber-0.3.20):
tracing-subscriber 0.3.20
[Compare
Source](https://redirect.github.com/tokio-rs/tracing/compare/tracing-subscriber-0.3.19...tracing-subscriber-0.3.20)
**Security Fix**: ANSI Escape Sequence Injection (CVE-TBD)
#### Impact
Previous versions of tracing-subscriber were vulnerable to ANSI escape
sequence injection attacks. Untrusted user input containing ANSI escape
sequences could be injected into terminal output when logged,
potentially allowing attackers to:
- Manipulate terminal title bars
- Clear screens or modify terminal display
- Potentially mislead users through terminal manipulation
In isolation, impact is minimal, however security issues have been found
in terminal emulators that enabled an attacker to use ANSI escape
sequences via logs to exploit vulnerabilities in the terminal emulator.
#### Solution
Version 0.3.20 fixes this vulnerability by escaping ANSI control
characters in when writing events to destinations that may be printed to
the terminal.
#### Affected Versions
All versions of tracing-subscriber prior to 0.3.20 are affected by this
vulnerability.
#### Recommendations
Immediate Action Required: We recommend upgrading to tracing-subscriber
0.3.20 immediately, especially if your application:
- Logs user-provided input (form data, HTTP headers, query parameters,
etc.)
- Runs in environments where terminal output is displayed to users
#### Migration
This is a patch release with no breaking API changes. Simply update your
Cargo.toml:
```toml
[dependencies]
tracing-subscriber = "0.3.20"
```
#### Acknowledgments
We would like to thank [zefr0x](http://github.com/zefr0x) who
responsibly reported the issue at `security@tokio.rs`.
If you believe you have found a security vulnerability in any tokio-rs
project, please email us at `security@tokio.rs`.
</details>
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This is similar to a change made in the "list top-level modules"
implementation that had been masked by poor Salsa failure modes.
Basically, if we can't find a root here, it *must* be a bug. And if we
just silently skip over it, we risk voiding Salsa's purity contract,
leading to more difficult to debug panics.
This did cause one test to fail, but only because the test wasn't
properly setting up roots.
This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [camino](https://redirect.github.com/camino-rs/camino) |
workspace.dependencies | patch | `1.1.11` -> `1.1.12` |
---
> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.
---
### Release Notes
<details>
<summary>camino-rs/camino (camino)</summary>
###
[`v1.1.12`](https://redirect.github.com/camino-rs/camino/blob/HEAD/CHANGELOG.md#1112---2025-08-26)
[Compare
Source](https://redirect.github.com/camino-rs/camino/compare/camino-1.1.11...camino-1.1.12)
##### Added
- `Utf8PathBuf::from_os_string` and `Utf8Path::from_os_str` conversions.
- `TryFrom<OsString> for Utf8PathBuf` and `TryFrom<&OsStr> for
&Utf8Path` conversions.
Thanks to [BenjaminBrienen](https://redirect.github.com/BenjaminBrienen)
for your first contribution!
</details>
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This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [clap](https://redirect.github.com/clap-rs/clap) |
workspace.dependencies | patch | `4.5.45` -> `4.5.46` |
---
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---
### Release Notes
<details>
<summary>clap-rs/clap (clap)</summary>
###
[`v4.5.46`](https://redirect.github.com/clap-rs/clap/blob/HEAD/CHANGELOG.md#4546---2025-08-26)
[Compare
Source](https://redirect.github.com/clap-rs/clap/compare/v4.5.45...v4.5.46)
##### Features
- Expose `StyledStr::push_str`
</details>
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This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [mimalloc](https://redirect.github.com/purpleprotocol/mimalloc_rust) |
workspace.dependencies | patch | `0.1.47` -> `0.1.48` |
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<details>
<summary>purpleprotocol/mimalloc_rust (mimalloc)</summary>
###
[`v0.1.48`](https://redirect.github.com/purpleprotocol/mimalloc_rust/releases/tag/v0.1.48):
Version 0.1.48
[Compare
Source](https://redirect.github.com/purpleprotocol/mimalloc_rust/compare/v0.1.47...v0.1.48)
##### Changes
- Mimalloc `v3` feature flag. (credits
[@​gschulze](https://redirect.github.com/gschulze)).
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## Summary
This PR is a first step toward adding a GitLab output format to ty. It
converts the `GitlabEmitter` from `ruff_linter` to a `GitlabRenderer` in
`ruff_db` and updates its implementation to handle non-Ruff files and
diagnostics without primary spans. I tried to break up the changes here
so that they're easy to review commit-by-commit, or at least in groups
of commits:
- [preparatory changes in-place in `ruff_linter` and a `ruff_db`
skeleton](0761b73a61)
- [moving the code over with no implementation changes mixed
in](0761b73a61..8f909ea0bb)
- [tidying up the code now in
`ruff_db`](9f047c4f9f..e5e217fcd6)
This wasn't strictly necessary, but I also added some `Serialize`
structs instead of calling `json!` to make it a little clearer that we
weren't modifying the schema (e4c4bee35d).
I plan to follow this up with a separate PR exposing this output format
in the ty CLI, which should be quite straightforward.
## Test Plan
Existing tests, especially the two that show up in the diff as renamed
nearly without changes
This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
|
[regex-automata](https://redirect.github.com/rust-lang/regex/tree/master/regex-automata)
([source](https://redirect.github.com/rust-lang/regex)) |
workspace.dependencies | patch | `0.4.9` -> `0.4.10` |
---
> [!WARNING]
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---
### Release Notes
<details>
<summary>rust-lang/regex (regex-automata)</summary>
###
[`v0.4.10`](https://redirect.github.com/rust-lang/regex/compare/regex-automata-0.4.9...regex-automata-0.4.10)
[Compare
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This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [regex](https://redirect.github.com/rust-lang/regex) |
workspace.dependencies | patch | `1.11.1` -> `1.11.2` |
---
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### Release Notes
<details>
<summary>rust-lang/regex (regex)</summary>
###
[`v1.11.2`](https://redirect.github.com/rust-lang/regex/blob/HEAD/CHANGELOG.md#1112-2025-08-24)
[Compare
Source](https://redirect.github.com/rust-lang/regex/compare/1.11.1...1.11.2)
\===================
This is a new patch release of `regex` with some minor fixes. A larger
number
of typo or lint fix patches were merged. Also, we now finally recommend
using
`std::sync::LazyLock`.
Improvements:
- [BUG
#​1217](https://redirect.github.com/rust-lang/regex/issues/1217):
Switch recommendation from `once_cell` to `std::sync::LazyLock`.
- [BUG
#​1225](https://redirect.github.com/rust-lang/regex/issues/1225):
Add `DFA::set_prefilter` to `regex-automata`.
Bug fixes:
- [BUG
#​1165](https://redirect.github.com/rust-lang/regex/pull/1150):
Remove `std` dependency from `perf-literal-multisubstring` crate
feature.
- [BUG
#​1165](https://redirect.github.com/rust-lang/regex/pull/1165):
Clarify the meaning of `(?R)$` in the documentation.
- [BUG
#​1281](https://redirect.github.com/rust-lang/regex/pull/1281):
Remove `fuzz/` and `record/` directories from published crate on
crates.io.
</details>
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This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
|
[tracing-indicatif](https://redirect.github.com/emersonford/tracing-indicatif)
| workspace.dependencies | patch | `0.3.12` -> `0.3.13` |
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### Release Notes
<details>
<summary>emersonford/tracing-indicatif (tracing-indicatif)</summary>
###
[`v0.3.13`](https://redirect.github.com/emersonford/tracing-indicatif/blob/HEAD/CHANGELOG.md#0313---2025-08-15)
[Compare
Source](https://redirect.github.com/emersonford/tracing-indicatif/compare/0.3.12...0.3.13)
- eliminate panics on internal lock poison
</details>
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In effect, we make the Salsa query aspect keyed only on whether we want
global symbols. We move everything else (hierarchical and querying) to
an aggregate step *after* the query.
This was a somewhat involved change since we want to return a flattened
list from visiting the source while also preserving enough information
to reform the symbols into a hierarchical structure that the LSP
expects. But I think overall the API has gotten simpler and we encode
more invariants into the type system. (For example, previously you got a
runtime assertion if you tried to provide a query string while enabling
hierarchical mode. But now that's prevented by construction.)
Basically, this splits the implementation into two pieces:
the first piece does the traversal and finds *all* symbols
across the workspace. The second piece does filtering based
on a user provided query string. Only the first piece is
cached by Salsa.
This brings warm "workspace symbols" requests down from
500-600ms to 100-200ms.
## Summary
Looks like an oversight at some point that led to two identical globals,
the one in `ty_project` just calls `ty_python_semantic::register_lints`.
Summary
--
This is a preparatory PR in support of #19919. It moves our `Diff`
rendering code from `ruff_linter` to `ruff_db`, where we have direct
access to the `DiagnosticStylesheet` used by our other diagnostic
rendering code. As shown by the tests, this shouldn't cause any visible
changes. The colors aren't exactly the same, as I note in a TODO
comment, but I don't think there's any existing way to see those, even
in tests.
The `Diff` implementation is mostly unchanged. I just switched from a
Ruff-specific `SourceFile` to a `DiagnosticSource` (removing an
`expect_ruff_source_file` call) and updated the `LineStyle` struct and
other styling calls to use `fmt_styled` and our existing stylesheet.
In support of these changes, I added three styles to our stylesheet:
`insertion` and `deletion` for the corresponding diff operations, and
`underline`, which apparently we _can_ use, as I hoped on Discord. This
isn't supported in all terminals, though. It worked in ghostty but not
in st for me.
I moved the `calculate_print_width` function from the now-deleted
`diff.rs` to a method on `OneIndexed`, where it was available everywhere
we needed it. I'm not sure if that's desirable, or if my other changes
to the function are either (using `ilog10` instead of a loop). This does
make it `const` and slightly simplifies things in my opinion, but I'm
happy to revert it if preferred.
I also inlined a version of `show_nonprinting` from the
`ShowNonprinting` trait in `ruff_linter`:
f4be05a83b/crates/ruff_linter/src/text_helpers.rs (L3-L5)
This trait is now only used in `source_kind.rs`, so I'm not sure it's
worth having the trait or the macro-generated implementation (which is
only called once). This is obviously closely related to our unprintable
character handling in diagnostic rendering, but the usage seems
different enough not to try to combine them.
f4be05a83b/crates/ruff_db/src/diagnostic/render.rs (L990-L998)
We could also move the trait to another crate where we can use it in
`ruff_db` instead of inlining here, of course.
Finally, this PR makes `TextEmitter` a very thin wrapper around a
`DisplayDiagnosticsConfig`. It's still used in a few places, though,
unlike the other emitters we've replaced, so I figured it was worth
keeping around. It's a pretty nice API for setting all of the options on
the config and then passing that along to a `DisplayDiagnostics`.
Test Plan
--
Existing snapshot tests with diffs
