fix compile-fail ref files

Author: RalfJung

tests/compile-fail/ctlz_nonzero.rs

@@ -10,6 +10,6 @@ pub fn main() {
     unsafe {
         use crate::rusti::*;
 
-        ctlz_nonzero(0u8); //~ ERROR constant evaluation error: ctlz_nonzero called on 0
+        ctlz_nonzero(0u8); //~ ERROR ctlz_nonzero called on 0
     }
 }

tests/compile-fail/cttz_nonzero.rs

@@ -10,6 +10,6 @@ pub fn main() {
     unsafe {
         use crate::rusti::*;
 
-        cttz_nonzero(0u8); //~ ERROR constant evaluation error: cttz_nonzero called on 0
+        cttz_nonzero(0u8); //~ ERROR cttz_nonzero called on 0
     }
 }

tests/compile-fail/deref_fn_ptr.rs

@@ -2,7 +2,7 @@ fn f() {}
 
 fn main() {
     let x: u8 = unsafe {
-        *std::mem::transmute::<fn(), *const u8>(f) //~ ERROR constant evaluation error: tried to dereference a function pointer
+        *std::mem::transmute::<fn(), *const u8>(f) //~ ERROR tried to dereference a function pointer
     };
     panic!("this should never print: {}", x);
 }

tests/compile-fail/getrandom.rs

@@ -8,6 +8,6 @@ fn main() {
     let mut buf = [0u8; 5];
     unsafe {
         libc::syscall(libc::SYS_getrandom, buf.as_mut_ptr() as *mut libc::c_void, 5 as libc::size_t, 0 as libc::c_uint);
-        //~^ ERROR constant evaluation error: miri does not support gathering system entropy in deterministic mode!
+        //~^ ERROR miri does not support gathering system entropy in deterministic mode!
     }
 }

tests/compile-fail/never_transmute_humans.rs

@@ -7,7 +7,6 @@ struct Human;
 
 fn main() {
     let _x: ! = unsafe {
-        std::mem::transmute::<Human, !>(Human) //~ ERROR constant evaluation error
-        //^~ NOTE entered unreachable code
+        std::mem::transmute::<Human, !>(Human) //~ ERROR entered unreachable code
     };
 }

tests/compile-fail/null_pointer_deref.rs

@@ -1,4 +1,4 @@
 fn main() {
-    let x: i32 = unsafe { *std::ptr::null() }; //~ ERROR constant evaluation error: invalid use of NULL pointer
+    let x: i32 = unsafe { *std::ptr::null() }; //~ ERROR invalid use of NULL pointer
     panic!("this should never print: {}", x);
 }

tests/compile-fail/null_pointer_deref_zst.rs

@@ -1,4 +1,4 @@
 fn main() {
-    let x: () = unsafe { *std::ptr::null() }; //~ ERROR constant evaluation error: invalid use of NULL pointer
+    let x: () = unsafe { *std::ptr::null() }; //~ ERROR invalid use of NULL pointer
     panic!("this should never print: {:?}", x);
 }

tests/compile-fail/null_pointer_write.rs

@@ -1,3 +1,3 @@
 fn main() {
-    unsafe { *std::ptr::null_mut() = 0i32 }; //~ ERROR constant evaluation error: invalid use of NULL pointer
+    unsafe { *std::ptr::null_mut() = 0i32 }; //~ ERROR invalid use of NULL pointer
 }

tests/compile-fail/null_pointer_write_zst.rs

@@ -2,5 +2,5 @@ fn main() {
     // Not using the () type here, as writes of that type do not even have MIR generated.
     // Also not assigning directly as that's array initialization, not assignment.
     let zst_val = [1u8; 0];
-    unsafe { *std::ptr::null_mut() = zst_val }; //~ ERROR constant evaluation error: invalid use of NULL pointer
+    unsafe { *std::ptr::null_mut() = zst_val }; //~ ERROR invalid use of NULL pointer
 }