bump Rust version

Author: RalfJung

rust-version

@@ -1 +1 @@
-nightly-2018-11-07
+nightly-2018-11-08

tests/compile-fail/validity/invalid_bool.rs

@@ -1,3 +1,3 @@
 fn main() {
-    let _b = unsafe { std::mem::transmute::<u8, bool>(2) }; //~ ERROR encountered 2, but expected something in the range 0..=1
+    let _b = unsafe { std::mem::transmute::<u8, bool>(2) }; //~ ERROR encountered 2, but expected something less or equal to 1
 }

tests/compile-fail/validity/invalid_char.rs

@@ -1,6 +1,6 @@
 fn main() {
     assert!(std::char::from_u32(-1_i32 as u32).is_none());
-    let _ = match unsafe { std::mem::transmute::<i32, char>(-1) } { //~ ERROR encountered 4294967295, but expected something in the range 0..=1114111
+    let _ = match unsafe { std::mem::transmute::<i32, char>(-1) } { //~ ERROR encountered 4294967295, but expected something less or equal to 1114111
         'a' => {true},
         'b' => {false},
         _ => {true},