Merge pull request #2162 from rust-lang/TC/non_exhaustive-same-crate

Remove exception WRT same-crate `non_exhaustive` reads
tree: 7103a796d3ad805c47a3c7f53426354e97f18b23
  1. .cargo/
  2. .github/
  3. dev-guide/
  4. docs/
  5. src/
  6. theme/
  7. tools/
  8. .gitattributes
  9. .gitignore
  10. book.toml
  11. Cargo.lock
  12. Cargo.toml
  13. CONTRIBUTING.md
  14. LICENSE-APACHE
  15. LICENSE-MIT
  16. README.md
  17. reference.md
  18. rust-toolchain.toml
  19. rustfmt.toml
  20. triagebot.toml
README.md

The Rust Language Reference

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