Auto merge of #2108 - RalfJung:rustup, r=RalfJung

rustup

Adjusts for https://github.com/rust-lang/rust/pull/96657. For now we use the fallback path in libstd.

rust-version

@@ -1 +1 @@
-9a251644fa2adde5f46eea8d342b7e60e4716039
+8fbd92d0b95d847c68948d8dbbfaccb470db4f92

src/machine.rs

@@ -380,7 +380,7 @@ fn init_extern_statics(this: &mut MiriEvalContext<'mir, 'tcx>) -> InterpResult<'
                 // Most of them are for weak symbols, which we all set to null (indicating that the
                 // symbol is not supported, and triggering fallback code which ends up calling a
                 // syscall that we do support).
-                for name in &["__cxa_thread_atexit_impl", "getrandom", "statx"] {
+                for name in &["__cxa_thread_atexit_impl", "getrandom", "statx", "__clock_gettime64"] {
                     let layout = this.machine.layouts.usize;
                     let place = this.allocate(layout, MiriMemoryKind::ExternStatic.into())?;
                     this.write_scalar(Scalar::from_machine_usize(0, this), &place.into())?;