Add regression test for #54378

Signed-off-by: NYuki Okushi <jtitor@2k36.org>

src/test/ui/lifetimes/issue-54378.rs

+// check-pass
+
+// Regression test for #54378.
+
+#![feature(never_type)]
+
+use std::marker::PhantomData;
+
+pub trait Machine<'a, 'mir, 'tcx>: Sized {
+    type MemoryKinds: ::std::fmt::Debug + Copy + Eq;
+    const MUT_STATIC_KIND: Option<Self::MemoryKinds>;
+}
+
+pub struct CompileTimeEvaluator<'a, 'mir, 'tcx: 'a+'mir> {
+    pub _data: PhantomData<(&'a (), &'mir (), &'tcx ())>,
+}
+
+impl<'a, 'mir, 'tcx: 'a + 'mir> Machine<'a, 'mir, 'tcx>
+    for CompileTimeEvaluator<'a, 'mir, 'tcx>
+{
+    type MemoryKinds = !;
+
+    const MUT_STATIC_KIND: Option<!> = None;
+}
+
+fn main() {}