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0fb5d634a0
Make the style crate (almost) build with a stable compiler <!-- Please describe your changes on the following line: --> The bulk of this is adding cargo features to make derived implementations of `heapsize` and `serde` traits optional. "Almost" because `std::intrinsics::discriminant_value` is currently unstable and doesn’t have any stable replacement that I know of. For now, this PR conditionally replaces it with `unimplemented!()`. r? @nox --- <!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: --> - [x] `./mach build -d` does not report any errors - [x] `./mach test-tidy` does not report any errors - [x] These changes <s>fix</s> are part of #11815 (github issue number if applicable). <!-- Either: --> - [ ] There are tests for these changes OR - [x] These changes do not <s>require tests</s> *have tests yet* because that requires https://github.com/servo/servo/issues/11806, but I still want to land this before it bitrots. (Tests should check that the build succeeds with a stable compiler.) <!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. --> <!-- Reviewable:start --> --- This change is [<img src="https://reviewable.io/review_button.svg" height="35" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/11816) <!-- Reviewable:end --> |
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| .. | ||
| canvas | ||
| canvas_traits | ||
| compositing | ||
| constellation | ||
| devtools | ||
| devtools_traits | ||
| gfx | ||
| gfx_traits | ||
| layout | ||
| layout_thread | ||
| layout_traits | ||
| msg | ||
| net | ||
| net_traits | ||
| plugins | ||
| profile | ||
| profile_traits | ||
| range | ||
| script | ||
| script_layout_interface | ||
| script_traits | ||
| servo | ||
| style | ||
| style_traits | ||
| util | ||
| webdriver_server | ||
