Auto merge of #1690 - RalfJung:rustup, r=RalfJung

rustup; allow some lints

rust-version

@@ -1 +1 @@
-9a9477fada5baf69d693e717d6df902e411a73d6
+a8f707553276a15565860af3d415aae18428aa96

tests/compile-fail/erroneous_const.rs

@@ -1,5 +1,7 @@
 //! Make sure we detect erroneous constants post-monomorphization even when they are unused.
 //! (https://github.com/rust-lang/miri/issues/1382)
+// Inlining changes the error location
+// compile-flags: -Zmir-opt-level=0
 #![feature(const_panic)]
 #![feature(never_type)]
 #![warn(warnings, const_err)]

tests/run-pass/float.rs

@@ -1,4 +1,5 @@
 #![feature(stmt_expr_attributes, test)]
+#![allow(arithmetic_overflow)]
 use std::fmt::Debug;
 use std::hint::black_box;
 

tests/run-pass/integer-ops.rs

@@ -1,12 +1,4 @@
-// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
+#![allow(arithmetic_overflow)]
 
 pub fn main() {
     // This tests that do (not) do sign extension properly when loading integers