fix various rustup failures

clippy_lints/src/let_if_seq.rs

@@ -108,7 +108,7 @@ fn check_block(&mut self, cx: &LateContext<'a, 'tcx>, block: &'tcx hir::Block) {
                     cond=snippet(cx, cond.span, "_"),
                     then=if then.stmts.len() > 1 { " ..;" } else { "" },
                     else=if default_multi_stmts { " ..;" } else { "" },
-                    value=snippet(cx, then.span, "<value>"),
+                    value=snippet(cx, value.span, "<value>"),
                     default=snippet(cx, default.span, "<default>"),
                 );
                 span_lint_and_then(cx,

clippy_lints/src/utils/mod.rs

@@ -357,6 +357,9 @@ pub fn method_chain_args<'a>(expr: &'a Expr, methods: &[&str]) -> Option<Vec<&'a
         // method chains are stored last -> first
         if let ExprMethodCall(ref name, _, ref args) = current.node {
             if name.node == *method_name {
+                if args.iter().any(|e| in_macro(e.span)) {
+                    return None;
+                }
                 matched.push(&**args); // build up `matched` backwards
                 current = &args[0] // go to parent expression
             } else {

tests/run-pass/mut_mut_macro.rs

@@ -20,13 +20,12 @@ fn main() {
     lazy_static! {
         static ref MUT_MAP : HashMap<usize, &'static str> = {
             let mut m = HashMap::new();
-            let mut zero = &mut &mut "zero";
             m.insert(0, "zero");
             m
         };
         static ref MUT_COUNT : usize = MUT_MAP.len();
     }
-    assert!(*MUT_COUNT == 1);
+    assert_eq!(*MUT_COUNT, 1);
     // FIXME: don't lint in array length, requires `check_body`
     //let _ = [""; (42.0 < std::f32::NAN) as usize];
 }