use crate::utils::{is_allowed, snippet, span_lint_and_sugg};
-use rustc::declare_lint_pass;
-use rustc::hir::*;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
use rustc_errors::Applicability;
-use rustc_session::declare_tool_lint;
+use rustc_hir::*;
+use rustc_lint::{LateContext, LateLintPass};
+use rustc_session::{declare_lint_pass, declare_tool_lint};
+use rustc_span::source_map::Span;
use syntax::ast::LitKind;
-use syntax::source_map::Span;
use unicode_normalization::UnicodeNormalization;
declare_clippy_lint! {