Auto merge of #1905 - camelid:rustup, r=RalfJung

rustup

r? `@RalfJung`

Author: bors

rust-version

@@ -1 +1 @@
-c7a30c8b6860d1f3459086f7a91074db1b54bc37
+db062de72b0a064f45b6f86894cbdc7c0ec68844

tests/compile-fail/alloc/reallocate-bad-size.rs

@@ -5,6 +5,6 @@ use std::alloc::{alloc, realloc, Layout};
 fn main() {
     unsafe {
         let x = alloc(Layout::from_size_align_unchecked(1, 1));
-        realloc(x, Layout::from_size_align_unchecked(2, 1), 1);
+        let _y = realloc(x, Layout::from_size_align_unchecked(2, 1), 1);
     }
 }

tests/compile-fail/alloc/reallocate-change-alloc.rs

@@ -3,7 +3,7 @@ use std::alloc::{alloc, realloc, Layout};
 fn main() {
     unsafe {
         let x = alloc(Layout::from_size_align_unchecked(1, 1));
-        realloc(x, Layout::from_size_align_unchecked(1, 1), 1);
+        let _y = realloc(x, Layout::from_size_align_unchecked(1, 1), 1);
         let _z = *x; //~ ERROR dereferenced after this allocation got freed
     }
 }

tests/compile-fail/alloc/reallocate-dangling.rs

@@ -6,6 +6,6 @@ fn main() {
     unsafe {
         let x = alloc(Layout::from_size_align_unchecked(1, 1));
         dealloc(x, Layout::from_size_align_unchecked(1, 1));
-        realloc(x, Layout::from_size_align_unchecked(1, 1), 1);
+        let _z = realloc(x, Layout::from_size_align_unchecked(1, 1), 1);
     }
 }