use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty;
use rustc_session::{declare_lint_pass, declare_tool_lint};
+use rustc_span::sym;
use rustc_span::Symbol;
declare_clippy_lint! {
let haystack = if let ExprKind::MethodCall(ref path, _, ref args, _) =
filter_args[0].kind {
let p = path.ident.name;
- if (p == sym!(iter) || p == sym!(iter_mut)) && args.len() == 1 {
+ if (p == sym::iter || p == sym!(iter_mut)) && args.len() == 1 {
&args[0]
} else {
&filter_args[0]