use crate::utils::span_lint;
+use rustc::declare_lint_pass;
use rustc::lint::{EarlyContext, EarlyLintPass, LintArray, LintPass};
-use rustc::{declare_lint_pass, declare_tool_lint};
+use rustc_session::declare_tool_lint;
use syntax::ast::*;
use syntax::source_map::Span;
use syntax::symbol::SymbolStr;