TODO: Add to INTRODUCE

Author: jchlanda

src/doc/rustc/src/platform-support/aarch64-unknown-linux-pauthtest.md

@@ -379,8 +379,8 @@ The following categories are supported (all present in tree):
   * crt-static-pauthtest.rs
 
 All tests from `assembly-llvm`, `codegen-llvm`, `codegen-units`, `coverage`,
-`crashes`, `incremental`, `mir-opt`, `run-make`, `ui` and `ui-fulldeps` subsets
-are expected to pass.
+`crashes`, `incremental`, `library`, `mir-opt`, `run-make`, `ui` and
+`ui-fulldeps` subsets are expected to pass.
 
 Command to run all passing tests (with tests added by this target explicitly
 named for convenience):