Auto merge of #32909 - sanxiyn:unused-trait-import-2, r=alexcrichton

Remove unused trait imports

Author: bors

src/libcore/fmt/builders.rs

@@ -9,7 +9,7 @@
 // except according to those terms.
 
 use prelude::v1::*;
-use fmt::{self, Write, FlagV1};
+use fmt::{self, FlagV1};
 
 struct PadAdapter<'a, 'b: 'a> {
     fmt: &'a mut fmt::Formatter<'b>,

src/libcore/num/mod.rs

@@ -14,7 +14,7 @@
 #![allow(missing_docs)]
 
 use char::CharExt;
-use cmp::{Eq, PartialOrd};
+use cmp::PartialOrd;
 use convert::From;
 use fmt;
 use intrinsics;

src/libcore/option.rs

@@ -142,7 +142,6 @@
 use self::Option::*;
 
 use clone::Clone;
-use cmp::{Eq, Ord};
 use default::Default;
 use iter::ExactSizeIterator;
 use iter::{Iterator, DoubleEndedIterator, FromIterator, IntoIterator};

src/libcore/slice.rs

@@ -41,7 +41,7 @@ use default::Default;
 use fmt;
 use intrinsics::assume;
 use iter::*;
-use ops::{FnMut, self, Index};
+use ops::{FnMut, self};
 use ops::RangeFull;
 use option::Option;
 use option::Option::{None, Some};

src/libcore/str/mod.rs

@@ -19,7 +19,6 @@ use self::pattern::{Searcher, ReverseSearcher, DoubleEndedSearcher};
 
 use char::{self, CharExt};
 use clone::Clone;
-use cmp::Eq;
 use convert::AsRef;
 use default::Default;
 use fmt;
@@ -1319,7 +1318,6 @@ Section: Trait implementations
 
 mod traits {
     use cmp::{Ord, Ordering, PartialEq, PartialOrd, Eq};
-    use iter::Iterator;
     use option::Option;
     use option::Option::Some;
     use ops;

src/librustc/infer/combine.rs

@@ -44,8 +44,8 @@ use super::type_variable::{RelationDir, BiTo, EqTo, SubtypeOf, SupertypeOf};
 use ty::{IntType, UintType};
 use ty::{self, Ty, TyCtxt};
 use ty::error::TypeError;
-use ty::fold::{TypeFolder, TypeFoldable};
-use ty::relate::{Relate, RelateResult, TypeRelation};
+use ty::fold::TypeFoldable;
+use ty::relate::{RelateResult, TypeRelation};
 use traits::PredicateObligations;
 
 use syntax::ast;

src/librustc/infer/error_reporting.rs

@@ -77,7 +77,6 @@ use hir::map as ast_map;
 use hir;
 use hir::print as pprust;
 
-use middle::cstore::CrateStore;
 use hir::def::Def;
 use hir::def_id::DefId;
 use infer::{self, TypeOrigin};

src/librustc/infer/mod.rs

@@ -31,7 +31,7 @@ use ty::adjustment;
 use ty::{TyVid, IntVid, FloatVid};
 use ty::{self, Ty, TyCtxt};
 use ty::error::{ExpectedFound, TypeError, UnconstrainedNumeric};
-use ty::fold::{TypeFolder, TypeFoldable};
+use ty::fold::TypeFoldable;
 use ty::relate::{Relate, RelateResult, TypeRelation};
 use traits::{self, PredicateObligations, ProjectionMode};
 use rustc_data_structures::unify::{self, UnificationTable};

src/librustc/lint/context.rs

@@ -30,7 +30,7 @@ use middle::privacy::AccessLevels;
 use ty::TyCtxt;
 use session::{config, early_error, Session};
 use lint::{Level, LevelSource, Lint, LintId, LintArray, LintPass};
-use lint::{EarlyLintPass, EarlyLintPassObject, LateLintPass, LateLintPassObject};
+use lint::{EarlyLintPassObject, LateLintPass, LateLintPassObject};
 use lint::{Default, CommandLine, Node, Allow, Warn, Deny, Forbid};
 use lint::builtin;
 use util::nodemap::FnvHashMap;

src/librustc/middle/dead.rs

@@ -25,7 +25,7 @@ use lint;
 
 use std::collections::HashSet;
 use syntax::{ast, codemap};
-use syntax::attr::{self, AttrMetaMethods};
+use syntax::attr;
 
 // Any local node that may call something in its body block should be
 // explored. For example, if it's a live NodeItem that is a