fix comment, rustfmt

Author: RalfJung

src/libpanic_unwind/lib.rs

@@ -30,7 +30,6 @@
 #![feature(raw)]
 #![panic_runtime]
 #![feature(panic_runtime)]
-
 // `real_imp` is unused with Miri, so silence warnings.
 #![cfg_attr(miri, allow(dead_code))]
 

src/libpanic_unwind/miri.rs

@@ -1,6 +1,6 @@
 //! Unwinding panics for Miri.
-use core::any::Any;
 use alloc::boxed::Box;
+use core::any::Any;
 
 // The type of the payload that the Miri engine propagates through unwinding for us.
 // Must be pointer-sized.

src/librustc_mir/interpret/eval_context.rs

@@ -651,7 +651,7 @@ impl<'mir, 'tcx, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
 
         if M::stack_pop(self, frame.extra, unwinding)? == StackPopJump::NoJump {
             // The hook already did everything.
-            // We want to skip the `trace!` below, hence early return.
+            // We want to skip the `info!` below, hence early return.
             return Ok(());
         }
         // Normal return.