From 00861d100dabcb6698963663b5a59f51f1b58e79 Mon Sep 17 00:00:00 2001
From: Yuki Okushi <huyuumi.dev@gmail.com>
Date: Sun, 15 Mar 2020 05:26:32 +0900
Subject: [PATCH] Rustup to rust-lang/rust#69076

---
 clippy_lints/src/len_zero.rs               | 2 +-
 clippy_lints/src/lib.rs                    | 2 ++
 clippy_lints/src/needless_pass_by_value.rs | 4 ++--
 clippy_lints/src/utils/mod.rs              | 6 ++++--
 4 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/clippy_lints/src/len_zero.rs b/clippy_lints/src/len_zero.rs
index 48881e1c2..00cfb3b71 100644
--- a/clippy_lints/src/len_zero.rs
+++ b/clippy_lints/src/len_zero.rs
@@ -134,7 +134,7 @@ fn check_trait_items(cx: &LateContext<'_, '_>, visited_trait: &Item<'_>, trait_i
     // fill the set with current and super traits
     fn fill_trait_set(traitt: DefId, set: &mut FxHashSet<DefId>, cx: &LateContext<'_, '_>) {
         if set.insert(traitt) {
-            for supertrait in rustc_infer::traits::supertrait_def_ids(cx.tcx, traitt) {
+            for supertrait in rustc_trait_selection::traits::supertrait_def_ids(cx.tcx, traitt) {
                 fill_trait_set(supertrait, set, cx);
             }
         }
diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs
index 1eac69678..791307ba4 100644
--- a/clippy_lints/src/lib.rs
+++ b/clippy_lints/src/lib.rs
@@ -51,6 +51,8 @@ extern crate rustc_span;
 #[allow(unused_extern_crates)]
 extern crate rustc_target;
 #[allow(unused_extern_crates)]
+extern crate rustc_trait_selection;
+#[allow(unused_extern_crates)]
 extern crate rustc_typeck;
 
 use rustc::session::Session;
diff --git a/clippy_lints/src/needless_pass_by_value.rs b/clippy_lints/src/needless_pass_by_value.rs
index 013433417..d2d2b48c9 100644
--- a/clippy_lints/src/needless_pass_by_value.rs
+++ b/clippy_lints/src/needless_pass_by_value.rs
@@ -12,12 +12,12 @@ use rustc_errors::{Applicability, DiagnosticBuilder};
 use rustc_hir::intravisit::FnKind;
 use rustc_hir::{BindingAnnotation, Body, FnDecl, GenericArg, HirId, ItemKind, Node, PatKind, QPath, TyKind};
 use rustc_infer::infer::TyCtxtInferExt;
-use rustc_infer::traits;
-use rustc_infer::traits::misc::can_type_implement_copy;
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::{Span, Symbol};
 use rustc_target::spec::abi::Abi;
+use rustc_trait_selection::traits;
+use rustc_trait_selection::traits::misc::can_type_implement_copy;
 use rustc_typeck::expr_use_visitor as euv;
 use std::borrow::Cow;
 
diff --git a/clippy_lints/src/utils/mod.rs b/clippy_lints/src/utils/mod.rs
index 9f7cf4007..e32164c8b 100644
--- a/clippy_lints/src/utils/mod.rs
+++ b/clippy_lints/src/utils/mod.rs
@@ -47,12 +47,14 @@ use rustc_hir::{
     MatchSource, Param, Pat, PatKind, Path, PathSegment, QPath, TraitItem, TraitItemKind, TraitRef, TyKind, Unsafety,
 };
 use rustc_infer::infer::TyCtxtInferExt;
-use rustc_infer::traits::predicate_for_trait_def;
 use rustc_lint::{LateContext, Level, Lint, LintContext};
 use rustc_span::hygiene::{ExpnKind, MacroKind};
 use rustc_span::source_map::original_sp;
 use rustc_span::symbol::{self, kw, Symbol};
 use rustc_span::{BytePos, Pos, Span, DUMMY_SP};
+use rustc_trait_selection::traits::predicate_for_trait_def;
+use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt;
+use rustc_trait_selection::traits::query::normalize::AtExt;
 use smallvec::SmallVec;
 
 use crate::consts::{constant, Constant};
@@ -1387,7 +1389,7 @@ pub fn is_trait_impl_item(cx: &LateContext<'_, '_>, hir_id: HirId) -> bool {
 /// }
 /// ```
 pub fn fn_has_unsatisfiable_preds(cx: &LateContext<'_, '_>, did: DefId) -> bool {
-    use rustc_infer::traits;
+    use rustc_trait_selection::traits;
     let predicates = cx
         .tcx
         .predicates_of(did)