warning: pointer-to-integer cast
  --> $DIR/deref-invalid-ptr.rs:LL:CC
   |
LL |     let x = 16usize as *const u32;
   |             ^^^^^^^^^^^^^^^^^^^^^ pointer-to-integer cast
   |
   = help: this program is using integer-to-pointer casts or (equivalently) `from_exposed_addr`,
   = help: which means that Miri might miss pointer bugs in this program
   = help: see https://doc.rust-lang.org/nightly/std/ptr/fn.from_exposed_addr.html for more details on that operation
   = help: to ensure that Miri does not miss bugs in your program, use `with_addr` (https://doc.rust-lang.org/nightly/std/ptr/index.html#strict-provenance) instead
   = help: you can then pass the `-Zmiri-strict-provenance` flag to Miri, to ensure you are not relying on `from_exposed_addr` semantics
   = help: alternatively, the `-Zmiri-permissive-provenance` flag disables this warning
           
   = note: inside `main` at $DIR/deref-invalid-ptr.rs:LL:CC

error: Undefined Behavior: dereferencing pointer failed: 0x10 is not a valid pointer
  --> $DIR/deref-invalid-ptr.rs:LL:CC
   |
LL |     let _y = unsafe { &*x as *const u32 };
   |                       ^^^ dereferencing pointer failed: 0x10 is not a valid pointer
   |
   = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
   = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information
           
   = note: inside `main` at $DIR/deref-invalid-ptr.rs:LL:CC

note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace

error: aborting due to previous error; 1 warning emitted