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Yuki Okushi
232e7a5e7a
rustdoc: Print a warning if the diff when comparing to old nightlies is empty
This avoids confusing situations where it's unclear whether there's a
bug in the diff tool or not:
```
26: `@has` check failed
`XPATH PATTERN` did not match
// `@has` - '//code/a[`@href="{{channel}}/std/primitive.i32.html"]'` 'i32'
Encountered 6 errors
------------------------------------------
info: generating a diff against nightly rustdoc
failures:
[rustdoc] rustdoc/primitive-reexport.rs
```
This directory contains the source code of the rust project, including:
- The test suite
- The bootstrapping build system
- Various submodules for tools, like rustdoc, rls, etc.
For more information on how various parts of the compiler work, see the rustc dev guide.