Introduce TyKind::UnnormalizedProjection

[scalexm]

Introduce a new variant used for lazy normalization in chalk integration. Mostly bug! everywhere.

r? @nikomatsakis

[rust-highfive]

The job x86_64-gnu-llvm-5.0 of your PR failed on Travis (raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

[00:37:36]    Compiling parking_lot_core v0.3.0
[00:37:36]    Compiling tempfile v3.0.3
[00:37:37]    Compiling parking_lot v0.6.4
[00:37:38]    Compiling rustdoc v0.0.0 (/checkout/src/librustdoc)
[00:37:44] error[E0004]: non-exhaustive patterns: `UnnormalizedProjection(_)` not covered
[00:37:44]     --> librustdoc/clean/mod.rs:2565:15
[00:37:44] 2565 |         match self.sty {
[00:37:44] 2565 |         match self.sty {
[00:37:44]      |               ^^^^^^^^ pattern `UnnormalizedProjection(_)` not covered
[00:37:44] error: aborting due to previous error
[00:37:44] 
[00:37:44] For more information about this error, try `rustc --explain E0004`.
[00:37:44] error: Could not compile `rustdoc`.
---
[00:37:44] 
[00:37:44] 
[00:37:44] failed to run: /checkout/obj/build/bootstrap/debug/bootstrap build
[00:37:44] Build completed unsuccessfully in 0:33:27
[00:37:44] Makefile:28: recipe for target 'all' failed
[00:37:44] make: *** [all] Error 1

The command "stamp sh -x -c "$RUN_SCRIPT"" exited with 2.
travis_time:start:08851380
$ date && (curl -fs --head https://google.com | grep ^Date: | sed 's/Date: //g' || true)

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @TimNN. (Feature Requests)

[nikomatsakis]

@bors r+

[bors]

📌 Commit edb3f97 has been approved by nikomatsakis

[bors]

☔ The latest upstream changes (presumably #54809) made this pull request unmergeable. Please resolve the merge conflicts.