Rustup to rust-lang/rust#67886

clippy_lints/src/approx_const.rs

@@ -1,7 +1,7 @@
 use crate::utils::span_lint;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::symbol;
 use std::f64::consts as f64;

clippy_lints/src/arithmetic.rs

@@ -1,8 +1,8 @@
 use crate::consts::constant_simple;
 use crate::utils::span_lint;
-use rustc::hir;
 use rustc::impl_lint_pass;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/assertions_on_constants.rs

@@ -3,8 +3,8 @@ use crate::utils::paths;
 use crate::utils::{is_direct_expn_of, is_expn_of, match_function_call, snippet_opt, span_help_and_lint};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use syntax::ast::LitKind;
 

clippy_lints/src/assign_ops.rs

@@ -1,9 +1,9 @@
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir;
 use rustc::hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
 
 use crate::utils::{
@@ -232,7 +232,7 @@ fn lint_misrefactored_assign_op(
 
 #[must_use]
 fn is_commutative(op: hir::BinOpKind) -> bool {
-    use rustc::hir::BinOpKind::*;
+    use rustc_hir::BinOpKind::*;
     match op {
         Add | Mul | And | Or | BitXor | BitAnd | BitOr | Eq | Ne => true,
         Sub | Div | Rem | Shl | Shr | Lt | Le | Ge | Gt => false,

clippy_lints/src/attrs.rs

@@ -7,13 +7,13 @@ use crate::utils::{
 };
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{
     in_external_macro, CheckLintNameResult, EarlyContext, EarlyLintPass, LateContext, LateLintPass, LintArray,
     LintContext, LintPass,
 };
 use rustc::ty;
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use rustc_span::symbol::Symbol;

clippy_lints/src/bit_mask.rs

@@ -2,10 +2,10 @@ use crate::consts::{constant, Constant};
 use crate::utils::sugg::Sugg;
 use crate::utils::{span_lint, span_lint_and_then};
 use if_chain::if_chain;
-use rustc::hir::*;
 use rustc::impl_lint_pass;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use syntax::ast::LitKind;

clippy_lints/src/blacklisted_name.rs

@@ -1,8 +1,8 @@
 use crate::utils::span_lint;
-use rustc::hir::*;
 use rustc::impl_lint_pass;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_data_structures::fx::FxHashSet;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/block_in_if_condition.rs

@@ -2,8 +2,8 @@ use crate::utils::*;
 use matches::matches;
 use rustc::declare_lint_pass;
 use rustc::hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
-use rustc::hir::*;
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintContext, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {
@@ -78,7 +78,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for BlockInIfCondition {
         }
         if let Some((check, then, _)) = higher::if_block(&expr) {
             if let ExprKind::Block(block, _) = &check.kind {
-                if block.rules == DefaultBlock {
+                if block.rules == BlockCheckMode::DefaultBlock {
                     if block.stmts.is_empty() {
                         if let Some(ex) = &block.expr {
                             // don't dig into the expression here, just suggest that they remove

clippy_lints/src/booleans.rs

@@ -4,10 +4,11 @@ use crate::utils::{
 };
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
+use rustc::hir::intravisit;
 use rustc::hir::intravisit::*;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use syntax::ast::LitKind;
@@ -109,7 +110,7 @@ impl<'a, 'tcx, 'v> Hir2Qmm<'a, 'tcx, 'v> {
         // prevent folding of `cfg!` macros and the like
         if !e.span.from_expansion() {
             match &e.kind {
-                ExprKind::Unary(UnNot, inner) => return Ok(Bool::Not(box self.run(inner)?)),
+                ExprKind::Unary(UnOp::UnNot, inner) => return Ok(Bool::Not(box self.run(inner)?)),
                 ExprKind::Binary(binop, lhs, rhs) => match &binop.node {
                     BinOpKind::Or => return Ok(Bool::Or(self.extract(BinOpKind::Or, &[lhs, rhs], Vec::new())?)),
                     BinOpKind::And => return Ok(Bool::And(self.extract(BinOpKind::And, &[lhs, rhs], Vec::new())?)),
@@ -445,7 +446,7 @@ impl<'a, 'tcx> Visitor<'tcx> for NonminimalBoolVisitor<'a, 'tcx> {
             ExprKind::Binary(binop, _, _) if binop.node == BinOpKind::Or || binop.node == BinOpKind::And => {
                 self.bool_expr(e)
             },
-            ExprKind::Unary(UnNot, inner) => {
+            ExprKind::Unary(UnOp::UnNot, inner) => {
                 if self.cx.tables.node_types()[inner.hir_id].is_bool() {
                     self.bool_expr(e);
                 } else {
@@ -471,7 +472,7 @@ struct NotSimplificationVisitor<'a, 'tcx> {
 
 impl<'a, 'tcx> Visitor<'tcx> for NotSimplificationVisitor<'a, 'tcx> {
     fn visit_expr(&mut self, expr: &'tcx Expr<'_>) {
-        if let ExprKind::Unary(UnNot, inner) = &expr.kind {
+        if let ExprKind::Unary(UnOp::UnNot, inner) = &expr.kind {
             if let Some(suggestion) = simplify_not(self.cx, inner) {
                 span_lint_and_sugg(
                     self.cx,

clippy_lints/src/bytecount.rs

@@ -4,10 +4,10 @@ use crate::utils::{
 };
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty;
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use syntax::ast::{Name, UintTy};
 

clippy_lints/src/checked_conversions.rs

@@ -2,9 +2,9 @@
 
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintContext, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use syntax::ast::LitKind;
 

clippy_lints/src/cognitive_complexity.rs

@@ -1,9 +1,9 @@
 //! calculate cognitive complexity and warn about overly complex functions
 
 use rustc::hir::intravisit::{walk_expr, FnKind, NestedVisitorMap, Visitor};
-use rustc::hir::*;
 use rustc::impl_lint_pass;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintContext, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use rustc_span::BytePos;

clippy_lints/src/comparison_chain.rs

@@ -2,8 +2,8 @@ use crate::utils::{
     get_trait_def_id, if_sequence, implements_trait, parent_node_is_if_expr, paths, span_help_and_lint, SpanlessEq,
 };
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/consts.rs

@@ -2,13 +2,13 @@
 
 use crate::utils::{clip, higher, sext, unsext};
 use if_chain::if_chain;
-use rustc::hir::def::{DefKind, Res};
-use rustc::hir::*;
 use rustc::lint::LateContext;
 use rustc::ty::subst::{Subst, SubstsRef};
 use rustc::ty::{self, Ty, TyCtxt};
 use rustc::{bug, span_bug};
 use rustc_data_structures::sync::Lrc;
+use rustc_hir::def::{DefKind, Res};
+use rustc_hir::*;
 use rustc_span::symbol::Symbol;
 use std::cmp::Ordering::{self, Equal};
 use std::cmp::PartialOrd;
@@ -240,9 +240,9 @@ impl<'c, 'cc> ConstEvalLateContext<'c, 'cc> {
                 self.expr(value).map(|v| Constant::Repeat(Box::new(v), n))
             },
             ExprKind::Unary(op, ref operand) => self.expr(operand).and_then(|o| match op {
-                UnNot => self.constant_not(&o, self.tables.expr_ty(e)),
-                UnNeg => self.constant_negate(&o, self.tables.expr_ty(e)),
-                UnDeref => Some(o),
+                UnOp::UnNot => self.constant_not(&o, self.tables.expr_ty(e)),
+                UnOp::UnNeg => self.constant_negate(&o, self.tables.expr_ty(e)),
+                UnOp::UnDeref => Some(o),
             }),
             ExprKind::Binary(op, ref left, ref right) => self.binop(op, left, right),
             ExprKind::Call(ref callee, ref args) => {

clippy_lints/src/copies.rs

@@ -1,10 +1,10 @@
 use crate::utils::{get_parent_expr, higher, if_sequence, same_tys, snippet, span_lint_and_then, span_note_and_lint};
 use crate::utils::{SpanlessEq, SpanlessHash};
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty::Ty;
 use rustc_data_structures::fx::FxHashMap;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::symbol::Symbol;
 use std::collections::hash_map::Entry;

clippy_lints/src/copy_iterator.rs

@@ -1,7 +1,7 @@
 use crate::utils::{is_copy, match_path, paths, span_note_and_lint};
 use rustc::declare_lint_pass;
-use rustc::hir::{Item, ItemKind};
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::{Item, ItemKind};
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/default_trait_access.rs

@@ -1,9 +1,9 @@
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty;
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 use crate::utils::{any_parent_is_automatically_derived, match_def_path, paths, span_lint_and_sugg};

clippy_lints/src/derive.rs

@@ -2,9 +2,9 @@ use crate::utils::paths;
 use crate::utils::{is_automatically_derived, is_copy, match_path, span_lint_and_then};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty::{self, Ty};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/doc.rs

@@ -1,9 +1,9 @@
 use crate::utils::{match_type, paths, return_ty, span_lint};
 use itertools::Itertools;
-use rustc::hir;
 use rustc::impl_lint_pass;
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintPass};
 use rustc_data_structures::fx::FxHashSet;
+use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::{BytePos, MultiSpan, Span};
 use rustc_span::Pos;

clippy_lints/src/double_comparison.rs

@@ -1,9 +1,9 @@
 //! Lint on unnecessary double comparisons. Some examples:
 
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/drop_bounds.rs

@@ -1,8 +1,8 @@
 use crate::utils::{match_def_path, paths, span_lint};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateLintPass, LintArray, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/drop_forget_ref.rs

@@ -1,9 +1,9 @@
 use crate::utils::{is_copy, match_def_path, paths, qpath_res, span_note_and_lint};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/duration_subsec.rs

@@ -1,8 +1,8 @@
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Spanned;
 

clippy_lints/src/empty_enum.rs

@@ -2,8 +2,8 @@
 
 use crate::utils::span_lint_and_then;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/entry.rs

@@ -4,9 +4,9 @@ use crate::utils::{snippet_with_applicability, span_lint_and_then, walk_ptrs_ty}
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
 use rustc::hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/enum_clike.rs

@@ -4,10 +4,10 @@
 use crate::consts::{miri_to_const, Constant};
 use crate::utils::span_lint;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty;
 use rustc::ty::util::IntTypeExt;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use std::convert::TryFrom;
 use syntax::ast::{IntTy, UintTy};

clippy_lints/src/enum_glob_use.rs

@@ -2,9 +2,9 @@
 
 use crate::utils::span_lint;
 use rustc::declare_lint_pass;
-use rustc::hir::def::{DefKind, Res};
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::def::{DefKind, Res};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/eq_op.rs

@@ -1,8 +1,8 @@
 use crate::utils::{implements_trait, is_copy, multispan_sugg, snippet, span_lint, span_lint_and_then, SpanlessEq};
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/erasing_op.rs

@@ -1,6 +1,6 @@
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/escape.rs

@@ -1,10 +1,10 @@
 use rustc::hir::intravisit as visit;
-use rustc::hir::HirIdSet;
-use rustc::hir::{self, *};
 use rustc::impl_lint_pass;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty::layout::LayoutOf;
 use rustc::ty::{self, Ty};
+use rustc_hir::HirIdSet;
+use rustc_hir::{self, *};
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use rustc_typeck::expr_use_visitor::*;
@@ -93,7 +93,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for BoxedLocal {
 }
 
 // TODO: Replace with Map::is_argument(..) when it's fixed
-fn is_argument(map: &hir::map::Map<'_>, id: HirId) -> bool {
+fn is_argument(map: &rustc::hir::map::Map<'_>, id: HirId) -> bool {
     match map.find(id) {
         Some(Node::Binding(_)) => (),
         _ => return false,

clippy_lints/src/eta_reduction.rs

@@ -1,10 +1,10 @@
 use if_chain::if_chain;
 use matches::matches;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintContext, LintPass};
 use rustc::ty::{self, Ty};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 use crate::utils::{

clippy_lints/src/eval_order_dependence.rs

@@ -2,9 +2,9 @@ use crate::utils::{get_parent_expr, span_lint, span_note_and_lint};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
 use rustc::hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/excessive_precision.rs

@@ -2,10 +2,10 @@ use crate::utils::span_lint_and_sugg;
 use crate::utils::sugg::format_numeric_literal;
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty;
 use rustc_errors::Applicability;
+use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
 use rustc_span::symbol::Symbol;
 use std::f32;

clippy_lints/src/exit.rs

@@ -1,8 +1,8 @@
 use crate::utils::{is_entrypoint_fn, match_def_path, paths, qpath_res, span_lint};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::{Expr, ExprKind, Item, ItemKind, Node};
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::{Expr, ExprKind, Item, ItemKind, Node};
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/explicit_write.rs

@@ -1,9 +1,9 @@
 use crate::utils::{is_expn_of, match_function_call, paths, span_lint, span_lint_and_sugg};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use syntax::ast::LitKind;
 

clippy_lints/src/fallible_impl_from.rs

@@ -2,9 +2,9 @@ use crate::utils::paths::{BEGIN_PANIC, BEGIN_PANIC_FMT, FROM_TRAIT, OPTION, RESU
 use crate::utils::{is_expn_of, match_def_path, method_chain_args, span_lint_and_then, walk_ptrs_ty};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty::{self, Ty};
+use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
 use rustc_span::Span;
 
@@ -48,7 +48,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for FallibleImplFrom {
 
 fn lint_impl_body<'a, 'tcx>(cx: &LateContext<'a, 'tcx>, impl_span: Span, impl_items: &[hir::ImplItemRef<'_>]) {
     use rustc::hir::intravisit::{self, NestedVisitorMap, Visitor};
-    use rustc::hir::*;
+    use rustc_hir::*;
 
     struct FindPanicUnwrap<'a, 'tcx> {
         lcx: &'a LateContext<'a, 'tcx>,

clippy_lints/src/format.rs

@@ -5,9 +5,9 @@ use crate::utils::{
 };
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintContext, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use syntax::ast::LitKind;

clippy_lints/src/functions.rs

@@ -4,12 +4,14 @@ use crate::utils::{
     type_is_unsafe_function,
 };
 use matches::matches;
-use rustc::hir::{self, def::Res, def_id::DefId, intravisit};
+use rustc::hir::intravisit;
 use rustc::impl_lint_pass;
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintContext, LintPass};
 use rustc::ty::{self, Ty};
 use rustc_data_structures::fx::FxHashSet;
 use rustc_errors::Applicability;
+use rustc_hir as hir;
+use rustc_hir::{def::Res, def_id::DefId};
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use rustc_target::spec::abi::Abi;
@@ -199,16 +201,16 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Functions {
         };
 
         let unsafety = match kind {
-            hir::intravisit::FnKind::ItemFn(_, _, hir::FnHeader { unsafety, .. }, _, _) => unsafety,
-            hir::intravisit::FnKind::Method(_, sig, _, _) => sig.header.unsafety,
-            hir::intravisit::FnKind::Closure(_) => return,
+            intravisit::FnKind::ItemFn(_, _, hir::FnHeader { unsafety, .. }, _, _) => unsafety,
+            intravisit::FnKind::Method(_, sig, _, _) => sig.header.unsafety,
+            intravisit::FnKind::Closure(_) => return,
         };
 
         // don't warn for implementations, it's not their fault
         if !is_impl {
             // don't lint extern functions decls, it's not their fault either
             match kind {
-                hir::intravisit::FnKind::Method(
+                intravisit::FnKind::Method(
                     _,
                     &hir::FnSig {
                         header: hir::FnHeader { abi: Abi::Rust, .. },
@@ -217,7 +219,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Functions {
                     _,
                     _,
                 )
-                | hir::intravisit::FnKind::ItemFn(_, _, hir::FnHeader { abi: Abi::Rust, .. }, _, _) => {
+                | intravisit::FnKind::ItemFn(_, _, hir::FnHeader { abi: Abi::Rust, .. }, _, _) => {
                     self.check_arg_number(cx, decl, span.with_hi(decl.output.span().hi()))
                 },
                 _ => {},
@@ -397,7 +399,7 @@ impl<'a, 'tcx> Functions {
                     tables,
                 };
 
-                hir::intravisit::walk_expr(&mut v, expr);
+                intravisit::walk_expr(&mut v, expr);
             }
         }
     }
@@ -557,7 +559,7 @@ impl<'a, 'tcx> intravisit::Visitor<'tcx> for DerefVisitor<'a, 'tcx> {
                     }
                 }
             },
-            hir::ExprKind::Unary(hir::UnDeref, ref ptr) => self.check_arg(ptr),
+            hir::ExprKind::Unary(hir::UnOp::UnDeref, ref ptr) => self.check_arg(ptr),
             _ => (),
         }
 

clippy_lints/src/get_last_with_len.rs

@@ -3,9 +3,9 @@
 use crate::utils::{is_type_diagnostic_item, snippet_with_applicability, span_lint_and_sugg, SpanlessEq};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::{BinOpKind, Expr, ExprKind};
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::{BinOpKind, Expr, ExprKind};
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Spanned;
 use rustc_span::symbol::Symbol;

clippy_lints/src/identity_conversion.rs

@@ -1,10 +1,10 @@
 use crate::utils::{
     match_def_path, match_trait_method, paths, same_tys, snippet, snippet_with_macro_callsite, span_lint_and_then,
 };
-use rustc::hir::*;
 use rustc::impl_lint_pass;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/identity_op.rs

@@ -1,7 +1,7 @@
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/implicit_return.rs

@@ -6,10 +6,11 @@ use crate::utils::{
 use if_chain::if_chain;
 use rustc::{
     declare_lint_pass,
-    hir::{intravisit::FnKind, Body, Expr, ExprKind, FnDecl, HirId, MatchSource, StmtKind},
+    hir::intravisit::FnKind,
     lint::{LateContext, LateLintPass, LintArray, LintPass},
 };
 use rustc_errors::Applicability;
+use rustc_hir::{Body, Expr, ExprKind, FnDecl, HirId, MatchSource, StmtKind};
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/indexing_slicing.rs

@@ -5,9 +5,9 @@ use crate::utils;
 use crate::utils::higher;
 use crate::utils::higher::Range;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use syntax::ast::RangeLimits;
 

clippy_lints/src/infallible_destructuring_match.rs

@@ -1,9 +1,9 @@
 use super::utils::{get_arg_name, match_var, remove_blocks, snippet_with_applicability, span_lint_and_sugg};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/infinite_iter.rs

@@ -1,6 +1,6 @@
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 use crate::utils::{get_trait_def_id, higher, implements_trait, match_qpath, match_type, paths, span_lint};

clippy_lints/src/inherent_impl.rs

@@ -1,10 +1,10 @@
 //! lint on inherent implementations
 
 use crate::utils::{in_macro, span_lint_and_then};
-use rustc::hir::*;
 use rustc::impl_lint_pass;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_data_structures::fx::FxHashMap;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::Span;
 

clippy_lints/src/inherent_to_string.rs

@@ -1,7 +1,7 @@
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::{ImplItem, ImplItemKind};
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::{ImplItem, ImplItemKind};
 use rustc_session::declare_tool_lint;
 
 use crate::utils::{

clippy_lints/src/inline_fn_without_body.rs

@@ -3,9 +3,9 @@
 use crate::utils::span_lint_and_then;
 use crate::utils::sugg::DiagnosticBuilderExt;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use syntax::ast::{Attribute, Name};
 

clippy_lints/src/integer_division.rs

@@ -1,8 +1,8 @@
 use crate::utils::span_help_and_lint;
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/large_enum_variant.rs

@@ -1,11 +1,11 @@
 //! lint when there is a large size difference between variants on an enum
 
 use crate::utils::{snippet_opt, span_lint_and_then};
-use rustc::hir::*;
 use rustc::impl_lint_pass;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty::layout::LayoutOf;
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/large_stack_arrays.rs

@@ -1,8 +1,8 @@
-use rustc::hir::*;
 use rustc::impl_lint_pass;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::mir::interpret::ConstValue;
 use rustc::ty::{self, ConstKind};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 use if_chain::if_chain;

clippy_lints/src/len_zero.rs

@@ -1,11 +1,11 @@
 use crate::utils::{get_item_name, snippet_with_applicability, span_lint, span_lint_and_sugg, walk_ptrs_ty};
 use rustc::declare_lint_pass;
-use rustc::hir::def_id::DefId;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_errors::Applicability;
+use rustc_hir::def_id::DefId;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::{Span, Spanned};
 use syntax::ast::{LitKind, Name};

clippy_lints/src/let_if_seq.rs

@@ -1,11 +1,12 @@
 use crate::utils::{higher, qpath_res, snippet, span_lint_and_then};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir;
-use rustc::hir::def::Res;
-use rustc::hir::BindingAnnotation;
+use rustc::hir::intravisit;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir as hir;
+use rustc_hir::def::Res;
+use rustc_hir::BindingAnnotation;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {
@@ -142,7 +143,7 @@ struct UsedVisitor<'a, 'tcx> {
     used: bool,
 }
 
-impl<'a, 'tcx> hir::intravisit::Visitor<'tcx> for UsedVisitor<'a, 'tcx> {
+impl<'a, 'tcx> intravisit::Visitor<'tcx> for UsedVisitor<'a, 'tcx> {
     fn visit_expr(&mut self, expr: &'tcx hir::Expr<'_>) {
         if_chain! {
             if let hir::ExprKind::Path(ref qpath) = expr.kind;
@@ -153,10 +154,10 @@ impl<'a, 'tcx> hir::intravisit::Visitor<'tcx> for UsedVisitor<'a, 'tcx> {
                 return;
             }
         }
-        hir::intravisit::walk_expr(self, expr);
+        intravisit::walk_expr(self, expr);
     }
-    fn nested_visit_map<'this>(&'this mut self) -> hir::intravisit::NestedVisitorMap<'this, 'tcx> {
-        hir::intravisit::NestedVisitorMap::None
+    fn nested_visit_map<'this>(&'this mut self) -> intravisit::NestedVisitorMap<'this, 'tcx> {
+        intravisit::NestedVisitorMap::None
     }
 }
 
@@ -181,7 +182,7 @@ fn check_assign<'a, 'tcx>(
             };
 
             for s in block.stmts.iter().take(block.stmts.len()-1) {
-                hir::intravisit::walk_stmt(&mut v, s);
+                intravisit::walk_stmt(&mut v, s);
 
                 if v.used {
                     return None;
@@ -197,6 +198,6 @@ fn check_assign<'a, 'tcx>(
 
 fn used_in_expr<'a, 'tcx>(cx: &LateContext<'a, 'tcx>, id: hir::HirId, expr: &'tcx hir::Expr<'_>) -> bool {
     let mut v = UsedVisitor { cx, id, used: false };
-    hir::intravisit::walk_expr(&mut v, expr);
+    intravisit::walk_expr(&mut v, expr);
     v.used
 }

clippy_lints/src/let_underscore.rs

@@ -1,7 +1,7 @@
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 use crate::utils::{is_must_use_func_call, is_must_use_ty, span_help_and_lint};

clippy_lints/src/lib.rs

@@ -26,6 +26,8 @@ extern crate rustc_driver;
 #[allow(unused_extern_crates)]
 extern crate rustc_errors;
 #[allow(unused_extern_crates)]
+extern crate rustc_hir;
+#[allow(unused_extern_crates)]
 extern crate rustc_index;
 #[allow(unused_extern_crates)]
 extern crate rustc_lexer;

clippy_lints/src/lifetimes.rs

@@ -1,10 +1,11 @@
 use matches::matches;
 use rustc::declare_lint_pass;
-use rustc::hir::def::{DefKind, Res};
 use rustc::hir::intravisit::*;
-use rustc::hir::*;
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintContext, LintPass};
 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
+use rustc_hir::def::{DefKind, Res};
+use rustc_hir::FunctionRetTy::Return;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use rustc_span::symbol::kw;

clippy_lints/src/loops.rs

@@ -2,12 +2,12 @@ use crate::reexport::*;
 use if_chain::if_chain;
 use itertools::Itertools;
 use rustc::declare_lint_pass;
-use rustc::hir::def::{DefKind, Res};
-use rustc::hir::def_id;
 use rustc::hir::intravisit::{walk_block, walk_expr, walk_pat, walk_stmt, NestedVisitorMap, Visitor};
-use rustc::hir::*;
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintContext, LintPass};
 use rustc::middle::region;
+use rustc_hir::def::{DefKind, Res};
+use rustc_hir::def_id;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 // use rustc::middle::region::CodeExtent;
 use crate::consts::{constant, Constant};

clippy_lints/src/main_recursion.rs

@@ -1,6 +1,6 @@
-use rustc::hir::{Crate, Expr, ExprKind, QPath};
 use rustc::impl_lint_pass;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::{Crate, Expr, ExprKind, QPath};
 use rustc_session::declare_tool_lint;
 use rustc_span::symbol::sym;
 use syntax::ast::AttrKind;

clippy_lints/src/map_clone.rs

@@ -4,10 +4,10 @@ use crate::utils::{
 };
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty;
 use rustc_errors::Applicability;
+use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use syntax::ast::Ident;

clippy_lints/src/map_unit_fn.rs

@@ -2,10 +2,10 @@ use crate::utils::paths;
 use crate::utils::{iter_input_pats, match_type, method_chain_args, snippet, span_lint_and_then};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty::{self, Ty};
 use rustc_errors::Applicability;
+use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/matches.rs

@@ -7,11 +7,11 @@ use crate::utils::{
 };
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::def::CtorKind;
-use rustc::hir::*;
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintContext, LintPass};
 use rustc::ty::{self, Ty};
 use rustc_errors::Applicability;
+use rustc_hir::def::CtorKind;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use std::cmp::Ordering;

clippy_lints/src/mem_discriminant.rs

@@ -1,9 +1,9 @@
 use crate::utils::{match_def_path, paths, snippet, span_lint_and_then, walk_ptrs_ty_depth};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::{BorrowKind, Expr, ExprKind};
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::{BorrowKind, Expr, ExprKind};
 use rustc_session::declare_tool_lint;
 
 use std::iter;

clippy_lints/src/mem_forget.rs

@@ -1,7 +1,7 @@
 use crate::utils::{match_def_path, paths, qpath_res, span_lint};
 use rustc::declare_lint_pass;
-use rustc::hir::{Expr, ExprKind};
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::{Expr, ExprKind};
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/mem_replace.rs

@@ -4,9 +4,9 @@ use crate::utils::{
 };
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::{BorrowKind, Expr, ExprKind, Mutability, QPath};
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::{BorrowKind, Expr, ExprKind, Mutability, QPath};
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/methods/inefficient_to_string.rs

@@ -1,10 +1,10 @@
 use super::INEFFICIENT_TO_STRING;
 use crate::utils::{match_def_path, paths, snippet_with_applicability, span_lint_and_then, walk_ptrs_ty_depth};
 use if_chain::if_chain;
-use rustc::hir;
 use rustc::lint::LateContext;
 use rustc::ty::{self, Ty};
 use rustc_errors::Applicability;
+use rustc_hir as hir;
 
 /// Checks for the `INEFFICIENT_TO_STRING` lint
 pub fn lint<'tcx>(cx: &LateContext<'_, 'tcx>, expr: &hir::Expr<'_>, arg: &hir::Expr<'_>, arg_ty: Ty<'tcx>) {

clippy_lints/src/methods/manual_saturating_arithmetic.rs

@@ -1,8 +1,8 @@
 use crate::utils::{match_qpath, snippet_with_applicability, span_lint_and_sugg};
 use if_chain::if_chain;
-use rustc::hir;
 use rustc::lint::LateContext;
 use rustc_errors::Applicability;
+use rustc_hir as hir;
 use rustc_target::abi::LayoutOf;
 use syntax::ast;
 
@@ -146,7 +146,7 @@ fn is_min_or_max<'tcx>(cx: &LateContext<'_, 'tcx>, expr: &hir::Expr<'_>) -> Opti
     }
 
     if ty.is_signed() {
-        if let hir::ExprKind::Unary(hir::UnNeg, val) = &expr.kind {
+        if let hir::ExprKind::Unary(hir::UnOp::UnNeg, val) = &expr.kind {
             return check_lit(val, true);
         }
     }
@@ -161,7 +161,7 @@ enum Sign {
 }
 
 fn lit_sign(expr: &hir::Expr<'_>) -> Option<Sign> {
-    if let hir::ExprKind::Unary(hir::UnNeg, inner) = &expr.kind {
+    if let hir::ExprKind::Unary(hir::UnOp::UnNeg, inner) = &expr.kind {
         if let hir::ExprKind::Lit(..) = &inner.kind {
             return Some(Sign::Neg);
         }

clippy_lints/src/methods/mod.rs

@@ -10,11 +10,11 @@ use std::iter;
 use if_chain::if_chain;
 use matches::matches;
 use rustc::declare_lint_pass;
-use rustc::hir;
 use rustc::hir::intravisit::{self, Visitor};
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, Lint, LintArray, LintContext, LintPass};
 use rustc::ty::{self, Predicate, Ty};
 use rustc_errors::Applicability;
+use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use rustc_span::symbol::{sym, Symbol, SymbolStr};
@@ -3163,11 +3163,11 @@ impl OutType {
     fn matches(self, cx: &LateContext<'_, '_>, ty: &hir::FunctionRetTy<'_>) -> bool {
         let is_unit = |ty: &hir::Ty<'_>| SpanlessEq::new(cx).eq_ty_kind(&ty.kind, &hir::TyKind::Tup(&[]));
         match (self, ty) {
-            (Self::Unit, &hir::DefaultReturn(_)) => true,
-            (Self::Unit, &hir::Return(ref ty)) if is_unit(ty) => true,
-            (Self::Bool, &hir::Return(ref ty)) if is_bool(ty) => true,
-            (Self::Any, &hir::Return(ref ty)) if !is_unit(ty) => true,
-            (Self::Ref, &hir::Return(ref ty)) => matches!(ty.kind, hir::TyKind::Rptr(_, _)),
+            (Self::Unit, &hir::FunctionRetTy::DefaultReturn(_)) => true,
+            (Self::Unit, &hir::FunctionRetTy::Return(ref ty)) if is_unit(ty) => true,
+            (Self::Bool, &hir::FunctionRetTy::Return(ref ty)) if is_bool(ty) => true,
+            (Self::Any, &hir::FunctionRetTy::Return(ref ty)) if !is_unit(ty) => true,
+            (Self::Ref, &hir::FunctionRetTy::Return(ref ty)) => matches!(ty.kind, hir::TyKind::Rptr(_, _)),
             _ => false,
         }
     }

clippy_lints/src/methods/option_map_unwrap_or.rs

@@ -1,10 +1,10 @@
 use crate::utils::{differing_macro_contexts, paths, snippet_with_applicability, span_lint_and_then};
 use crate::utils::{is_copy, match_type};
 use rustc::hir::intravisit::{walk_path, NestedVisitorMap, Visitor};
-use rustc::hir::{self, *};
 use rustc::lint::LateContext;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_errors::Applicability;
+use rustc_hir::{self, *};
 use rustc_span::source_map::Span;
 use rustc_span::symbol::Symbol;
 
@@ -13,9 +13,9 @@ use super::OPTION_MAP_UNWRAP_OR;
 /// lint use of `map().unwrap_or()` for `Option`s
 pub(super) fn lint<'a, 'tcx>(
     cx: &LateContext<'a, 'tcx>,
-    expr: &hir::Expr<'_>,
-    map_args: &'tcx [hir::Expr<'_>],
-    unwrap_args: &'tcx [hir::Expr<'_>],
+    expr: &rustc_hir::Expr<'_>,
+    map_args: &'tcx [rustc_hir::Expr<'_>],
+    unwrap_args: &'tcx [rustc_hir::Expr<'_>],
     map_span: Span,
 ) {
     // lint if the caller of `map()` is an `Option`

clippy_lints/src/methods/unnecessary_filter_map.rs

@@ -1,10 +1,10 @@
 use crate::utils::paths;
 use crate::utils::usage::mutated_variables;
 use crate::utils::{match_qpath, match_trait_method, span_lint};
-use rustc::hir;
-use rustc::hir::def::Res;
 use rustc::hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
 use rustc::lint::LateContext;
+use rustc_hir as hir;
+use rustc_hir::def::Res;
 
 use if_chain::if_chain;
 

clippy_lints/src/minmax.rs

@@ -1,8 +1,8 @@
 use crate::consts::{constant_simple, Constant};
 use crate::utils::{match_def_path, paths, span_lint};
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use std::cmp::Ordering;
 

clippy_lints/src/misc.rs

@@ -2,10 +2,10 @@ use if_chain::if_chain;
 use matches::matches;
 use rustc::declare_lint_pass;
 use rustc::hir::intravisit::FnKind;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty;
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::{ExpnKind, Span};
 use syntax::ast::LitKind;
@@ -482,7 +482,7 @@ fn is_allowed<'a, 'tcx>(cx: &LateContext<'a, 'tcx>, expr: &'tcx Expr<'_>) -> boo
 // Return true if `expr` is the result of `signum()` invoked on a float value.
 fn is_signum(cx: &LateContext<'_, '_>, expr: &Expr<'_>) -> bool {
     // The negation of a signum is still a signum
-    if let ExprKind::Unary(UnNeg, ref child_expr) = expr.kind {
+    if let ExprKind::Unary(UnOp::UnNeg, ref child_expr) = expr.kind {
         return is_signum(cx, &child_expr);
     }
 
@@ -544,7 +544,7 @@ fn check_to_owned(cx: &LateContext<'_, '_>, expr: &Expr<'_>, other: &Expr<'_>) {
     }
 
     let other_gets_derefed = match other.kind {
-        ExprKind::Unary(UnDeref, _) => true,
+        ExprKind::Unary(UnOp::UnDeref, _) => true,
         _ => false,
     };
 

clippy_lints/src/missing_const_for_fn.rs

@@ -1,9 +1,9 @@
 use crate::utils::{has_drop, is_entrypoint_fn, span_lint, trait_ref_of_method};
 use rustc::declare_lint_pass;
-use rustc::hir;
 use rustc::hir::intravisit::FnKind;
-use rustc::hir::{Body, Constness, FnDecl, HirId};
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir as hir;
+use rustc_hir::{Body, Constness, FnDecl, HirId};
 use rustc_mir::transform::qualify_min_const_fn::is_min_const_fn;
 use rustc_session::declare_tool_lint;
 use rustc_span::Span;

clippy_lints/src/missing_doc.rs

@@ -7,10 +7,10 @@
 
 use crate::utils::span_lint;
 use if_chain::if_chain;
-use rustc::hir;
 use rustc::impl_lint_pass;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintContext, LintPass};
 use rustc::ty;
+use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use syntax::ast::{self, MetaItem, MetaItemKind};

clippy_lints/src/missing_inline.rs

@@ -1,7 +1,7 @@
 use crate::utils::span_lint;
 use rustc::declare_lint_pass;
-use rustc::hir;
 use rustc::lint::{self, LateContext, LateLintPass, LintArray, LintContext, LintPass};
+use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use syntax::ast;

clippy_lints/src/modulo_arithmetic.rs

@@ -2,9 +2,9 @@ use crate::consts::{constant, Constant};
 use crate::utils::{sext, span_lint_and_then};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty::{self};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use std::fmt::Display;
 

clippy_lints/src/mul_add.rs

@@ -1,7 +1,7 @@
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 use crate::utils::*;

clippy_lints/src/mut_key.rs

@@ -1,8 +1,8 @@
 use crate::utils::{match_def_path, paths, span_lint, trait_ref_of_method, walk_ptrs_ty};
 use rustc::declare_lint_pass;
-use rustc::hir;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty::{Adt, Dynamic, Opaque, Param, RawPtr, Ref, Ty, TypeAndMut};
+use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/mut_mut.rs

@@ -1,9 +1,9 @@
 use crate::utils::{higher, span_lint};
 use rustc::declare_lint_pass;
-use rustc::hir;
 use rustc::hir::intravisit;
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintContext, LintPass};
 use rustc::ty;
+use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/mut_reference.rs

@@ -1,9 +1,9 @@
 use crate::utils::span_lint;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty::subst::Subst;
 use rustc::ty::{self, Ty};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/mutable_debug_assertion.rs

@@ -2,9 +2,9 @@ use crate::utils::{is_direct_expn_of, span_lint};
 use if_chain::if_chain;
 use matches::matches;
 use rustc::hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
-use rustc::hir::{BorrowKind, Expr, ExprKind, Mutability, StmtKind, UnOp};
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::{declare_lint_pass, ty};
+use rustc_hir::{BorrowKind, Expr, ExprKind, Mutability, StmtKind, UnOp};
 use rustc_session::declare_tool_lint;
 use rustc_span::Span;
 

clippy_lints/src/mutex_atomic.rs

@@ -4,9 +4,9 @@
 
 use crate::utils::{match_type, paths, span_lint};
 use rustc::declare_lint_pass;
-use rustc::hir::Expr;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty::{self, Ty};
+use rustc_hir::Expr;
 use rustc_session::declare_tool_lint;
 use syntax::ast;
 

clippy_lints/src/needless_bool.rs

@@ -5,9 +5,9 @@
 use crate::utils::sugg::Sugg;
 use crate::utils::{higher, parent_node_is_if_expr, span_lint, 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_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Spanned;
 use syntax::ast::LitKind;

clippy_lints/src/needless_borrow.rs

@@ -4,12 +4,12 @@
 
 use crate::utils::{snippet_opt, span_lint_and_then};
 use if_chain::if_chain;
-use rustc::hir::{BindingAnnotation, BorrowKind, Expr, ExprKind, HirId, Item, Mutability, Pat, PatKind};
 use rustc::impl_lint_pass;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty;
 use rustc::ty::adjustment::{Adjust, Adjustment};
 use rustc_errors::Applicability;
+use rustc_hir::{BindingAnnotation, BorrowKind, Expr, ExprKind, HirId, Item, Mutability, Pat, PatKind};
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/needless_borrowed_ref.rs

@@ -5,9 +5,9 @@
 use crate::utils::{snippet_with_applicability, span_lint_and_then};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::{BindingAnnotation, Mutability, Node, Pat, PatKind};
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::{BindingAnnotation, Mutability, Node, Pat, PatKind};
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/needless_pass_by_value.rs

@@ -7,12 +7,12 @@ use if_chain::if_chain;
 use matches::matches;
 use rustc::declare_lint_pass;
 use rustc::hir::intravisit::FnKind;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::traits;
 use rustc::ty::{self, RegionKind, TypeFoldable};
 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::{Span, Symbol};
 use rustc_target::spec::abi::Abi;

clippy_lints/src/needless_update.rs

@@ -1,8 +1,8 @@
 use crate::utils::span_lint;
 use rustc::declare_lint_pass;
-use rustc::hir::{Expr, ExprKind};
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty;
+use rustc_hir::{Expr, ExprKind};
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/neg_cmp_op_on_partial_ord.rs

@@ -1,7 +1,7 @@
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintContext, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 use crate::utils::{self, paths, span_lint};

clippy_lints/src/neg_multiply.rs

@@ -1,7 +1,7 @@
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 
@@ -33,8 +33,8 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for NegMultiply {
             if BinOpKind::Mul == op.node {
                 match (&left.kind, &right.kind) {
                     (&ExprKind::Unary(..), &ExprKind::Unary(..)) => {},
-                    (&ExprKind::Unary(UnNeg, ref lit), _) => check_mul(cx, e.span, lit, right),
-                    (_, &ExprKind::Unary(UnNeg, ref lit)) => check_mul(cx, e.span, lit, left),
+                    (&ExprKind::Unary(UnOp::UnNeg, ref lit), _) => check_mul(cx, e.span, lit, right),
+                    (_, &ExprKind::Unary(UnOp::UnNeg, ref lit)) => check_mul(cx, e.span, lit, left),
                     _ => {},
                 }
             }

clippy_lints/src/new_without_default.rs

@@ -2,13 +2,13 @@ use crate::utils::paths;
 use crate::utils::sugg::DiagnosticBuilderExt;
 use crate::utils::{get_trait_def_id, implements_trait, return_ty, same_tys, span_lint_hir_and_then};
 use if_chain::if_chain;
-use rustc::hir;
-use rustc::hir::def_id::DefId;
-use rustc::hir::HirIdSet;
 use rustc::impl_lint_pass;
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintContext, LintPass};
 use rustc::ty::{self, Ty};
 use rustc_errors::Applicability;
+use rustc_hir as hir;
+use rustc_hir::def_id::DefId;
+use rustc_hir::HirIdSet;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/no_effect.rs

@@ -1,9 +1,9 @@
 use crate::utils::{has_drop, qpath_res, snippet_opt, span_lint, span_lint_and_sugg};
 use rustc::declare_lint_pass;
-use rustc::hir::def::{DefKind, Res};
-use rustc::hir::{BinOpKind, BlockCheckMode, Expr, ExprKind, Stmt, StmtKind, UnsafeSource};
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::def::{DefKind, Res};
+use rustc_hir::{BinOpKind, BlockCheckMode, Expr, ExprKind, Stmt, StmtKind, UnsafeSource};
 use rustc_session::declare_tool_lint;
 use std::ops::Deref;
 

clippy_lints/src/non_copy_const.rs

@@ -5,11 +5,11 @@
 use std::ptr;
 
 use rustc::declare_lint_pass;
-use rustc::hir::def::{DefKind, Res};
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, Lint, LintArray, LintPass};
 use rustc::ty::adjustment::Adjust;
 use rustc::ty::{Ty, TypeFlags};
+use rustc_hir::def::{DefKind, Res};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::{InnerSpan, Span, DUMMY_SP};
 use rustc_typeck::hir_ty_to_ty;
@@ -222,7 +222,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for NonCopyConst {
                             needs_check_adjustment = false;
                             break;
                         },
-                        ExprKind::Unary(UnDeref, _) => {
+                        ExprKind::Unary(UnOp::UnDeref, _) => {
                             // `*e` => desugared to `*Deref::deref(&e)`,
                             // meaning `e` must be referenced.
                             // no need to go further up since a method call is involved now.

clippy_lints/src/ok_if_let.rs

@@ -1,8 +1,8 @@
 use crate::utils::{match_type, method_chain_args, paths, snippet, span_help_and_lint};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/open_options.rs

@@ -1,7 +1,7 @@
 use crate::utils::{match_type, paths, span_lint, walk_ptrs_ty};
 use rustc::declare_lint_pass;
-use rustc::hir::{Expr, ExprKind};
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::{Expr, ExprKind};
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::{Span, Spanned};
 use syntax::ast::LitKind;

clippy_lints/src/overflow_check_conditional.rs

@@ -1,8 +1,8 @@
 use crate::utils::{span_lint, SpanlessEq};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/panic_unimplemented.rs

@@ -1,8 +1,8 @@
 use crate::utils::{is_direct_expn_of, is_expn_of, match_function_call, paths, span_lint};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::Span;
 use syntax::ast::LitKind;

clippy_lints/src/partialeq_ne_impl.rs

@@ -1,8 +1,8 @@
 use crate::utils::{is_automatically_derived, span_lint_hir};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/path_buf_push_overwrite.rs

@@ -1,9 +1,9 @@
 use crate::utils::{match_type, paths, span_lint_and_sugg, walk_ptrs_ty};
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use std::path::{Component, Path};
 use syntax::ast::LitKind;

clippy_lints/src/ptr.rs

@@ -7,11 +7,11 @@ use crate::utils::{
 };
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::QPath;
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc::ty;
 use rustc_errors::Applicability;
+use rustc_hir::QPath;
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use rustc_span::{MultiSpan, Symbol};

clippy_lints/src/ptr_offset_with_cast.rs

@@ -1,8 +1,8 @@
 use crate::utils;
 use rustc::declare_lint_pass;
-use rustc::hir::{Expr, ExprKind};
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::{Expr, ExprKind};
 use rustc_session::declare_tool_lint;
 use std::fmt;
 

clippy_lints/src/question_mark.rs

@@ -1,9 +1,9 @@
 use if_chain::if_chain;
 use rustc::declare_lint_pass;
-use rustc::hir::def::{DefKind, Res};
-use rustc::hir::*;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
 use rustc_errors::Applicability;
+use rustc_hir::def::{DefKind, Res};
+use rustc_hir::*;
 use rustc_session::declare_tool_lint;
 
 use crate::utils::paths::*;