Improve error handling for builtins injection

BuiltinsFailedException gets wrapped as a BzlLoadFailedException in BzlLoadFunction, and vice versa in StarlarkBuiltinsFunction. This makes for more verbose errors, but generally users who are not Bazel developers shouldn't see these errors.

The tests assert against the long form of the error rather than a substring to demonstrate the message in context.

Also slightly refactored the way errors in loaded bzls are reported, for uniformity between inlining and non-inlining code paths.

Work toward #11437.

RELNOTES: None
PiperOrigin-RevId: 315303094
4 files changed
tree: d81d9f8dead913c05e2144cc2cb28db930dd55fb
  1. .bazelci/
  2. examples/
  3. scripts/
  4. site/
  5. src/
  6. third_party/
  7. tools/
  8. .bazelrc
  9. .gitattributes
  10. .gitignore
  11. AUTHORS
  12. BUILD
  13. CHANGELOG.md
  14. CODEOWNERS
  15. combine_distfiles.py
  16. combine_distfiles_to_tar.sh
  17. compile.sh
  18. CONTRIBUTING.md
  19. CONTRIBUTORS
  20. distdir.bzl
  21. ISSUE_TEMPLATE.md
  22. LICENSE
  23. README.md
  24. WORKSPACE
README.md

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