Add new failing test

Author: antoyo

tests/failing-ui-tests.txt

@@ -84,3 +84,5 @@ tests/ui/simd/intrinsic/generic-arithmetic-pass.rs
 tests/ui/linking/no-gc-encapsulation-symbols.rs
 tests/ui/panics/unwind-force-no-unwind-tables.rs
 tests/ui/attributes/fn-align-dyn.rs
+tests/ui/linkage-attr/raw-dylib/elf/glibc-x86_64.rs
+tests/ui/explicit-tail-calls/recursion-etc.rs