use crate::utils::{match_qpath, paths, snippet, snippet_with_macro_callsite, span_lint_and_sugg};
use if_chain::if_chain;
+use rustc::declare_lint_pass;
use rustc::hir::*;
use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintPass};
use rustc::ty::Ty;
-use rustc::{declare_lint_pass, declare_tool_lint};
use rustc_errors::Applicability;
+use rustc_session::declare_tool_lint;
declare_clippy_lint! {
/// **What it does:** Checks for usages of `Err(x)?`.