| The Bazel team generally avoids making backwards-incompatible changes. However, |
| these changes are sometimes necessary to fix bugs, make improvements (such as |
| improving performance or usability) to the system, or to lock down APIs that |
| Major changes are announced in advance on the |
| [bazel-discuss](https://groups.google.com/forum/#!forum/bazel-discuss){: .external} mailing |
| list. Both undocumented features (attributes, rules, "Make" variables, and |
| flags) and documented features that are marked *experimental* are subject to |
| change at any time without prior notice. |
| Report any bugs or regressions you find on |
| [GitHub](https://github.com/bazelbuild/bazel/issues){: .external}. The repository maintainers |
| make an effort to triage reported issues within 2 business days. |
