Fix waterboxhost for version 1.60.0-nightly

closes #2750

waterbox/waterboxhost/src/calling_convention_adapters.rs

@@ -1,5 +1,7 @@
 // These are mostly unrelated to Waterbox, and are only here because I was too lazy to put them elsewhere.
 
+use std::arch::asm;
+
 /// win64 function that calls a sysv64 function and returns its result.
 /// The function is passed as a hidden parameter in rax, and should take 0 arguments, all of which are pointer or integer type.
 #[no_mangle]

waterbox/waterboxhost/src/lib.rs

@@ -4,7 +4,6 @@
 #![feature(never_type)]
 #![feature(control_flow_enum)]
 #![feature(core_intrinsics)]
-#![feature(asm)]
 #![feature(map_first_last)]
 
 #![allow(dead_code)]