Remove unused trait imports flagged by lint

Author: sanxiyn

src/libcore/num/mod.rs

@@ -16,7 +16,7 @@
 use self::wrapping::OverflowingOps;
 
 use char::CharExt;
-use cmp::{Eq, PartialOrd};
+use cmp::PartialOrd;
 use convert::From;
 use fmt;
 use intrinsics;

src/libcore/option.rs

@@ -146,7 +146,6 @@
 use self::Option::*;
 
 use clone::Clone;
-use cmp::{Eq, Ord};
 use default::Default;
 use iter::ExactSizeIterator;
 use iter::{Iterator, DoubleEndedIterator, FromIterator, IntoIterator};

src/libcore/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;
@@ -1180,7 +1179,6 @@ Section: Trait implementations
 mod traits {
     use cmp::{self, Ordering, Ord, PartialEq, PartialOrd, Eq};
     use cmp::Ordering::{Less, Greater};
-    use iter::Iterator;
     use option::Option;
     use option::Option::Some;
     use ops;

src/librustc/lint/context.rs

@@ -29,7 +29,7 @@ use middle::privacy::AccessLevels;
 use middle::ty::{self, Ty};
 use session::{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

@@ -22,7 +22,7 @@ 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

src/librustc/middle/implicator.rs

@@ -15,7 +15,7 @@ use middle::infer::{InferCtxt, GenericKind};
 use middle::subst::Substs;
 use middle::traits;
 use middle::ty::{self, RegionEscape, ToPredicate, Ty};
-use middle::ty::fold::{TypeFoldable, TypeFolder};
+use middle::ty::fold::TypeFoldable;
 
 use syntax::ast;
 use syntax::codemap::Span;

src/librustc/middle/infer/combine.rs

@@ -46,7 +46,7 @@ use middle::ty::{IntType, UintType};
 use middle::ty::{self, Ty};
 use middle::ty::error::TypeError;
 use middle::ty::fold::{TypeFolder, TypeFoldable};
-use middle::ty::relate::{Relate, RelateResult, TypeRelation};
+use middle::ty::relate::{RelateResult, TypeRelation};
 
 use syntax::ast;
 use syntax::codemap::Span;

src/librustc/middle/infer/mod.rs

@@ -33,7 +33,7 @@ use middle::ty::adjustment;
 use middle::ty::{TyVid, IntVid, FloatVid, RegionVid};
 use middle::ty::{self, Ty, HasTypeFlags};
 use middle::ty::error::{ExpectedFound, TypeError, UnconstrainedNumeric};
-use middle::ty::fold::{TypeFolder, TypeFoldable};
+use middle::ty::fold::TypeFoldable;
 use middle::ty::relate::{Relate, RelateResult, TypeRelation};
 use rustc_data_structures::unify::{self, UnificationTable};
 use std::cell::{RefCell, Ref};

src/librustc/middle/ty/mod.rs

@@ -29,14 +29,13 @@ use middle::lang_items::{FnTraitLangItem, FnMutTraitLangItem, FnOnceTraitLangIte
 use middle::subst::{self, ParamSpace, Subst, Substs, VecPerParamSpace};
 use middle::traits;
 use middle::ty;
-use middle::ty::fold::TypeFolder;
 use middle::ty::walk::TypeWalker;
 use util::common::memoized;
 use util::nodemap::{NodeMap, NodeSet, DefIdMap};
 use util::nodemap::FnvHashMap;
 
 use serialize::{Encodable, Encoder, Decodable, Decoder};
-use std::borrow::{Borrow, Cow};
+use std::borrow::Cow;
 use std::cell::{Cell, RefCell};
 use std::hash::{Hash, Hasher};
 use std::iter;

src/librustc/middle/ty/util.rs

@@ -28,7 +28,7 @@ use std::cmp;
 use std::hash::{Hash, SipHasher, Hasher};
 use std::rc::Rc;
 use syntax::ast::{self, Name};
-use syntax::attr::{self, AttrMetaMethods, SignedInt, UnsignedInt};
+use syntax::attr::{self, SignedInt, UnsignedInt};
 use syntax::codemap::Span;
 
 use rustc_front::hir;

src/librustc/session/filesearch.rs

@@ -15,7 +15,6 @@ pub use self::FileMatch::*;
 use std::collections::HashSet;
 use std::env;
 use std::fs;
-use std::io::prelude::*;
 use std::path::{Path, PathBuf};
 
 use session::search_paths::{SearchPaths, PathKind};

src/librustc_lint/types.rs

@@ -22,7 +22,7 @@ use std::cmp;
 use std::{i8, i16, i32, i64, u8, u16, u32, u64, f32, f64};
 
 use syntax::{abi, ast};
-use syntax::attr::{self, AttrMetaMethods};
+use syntax::attr;
 use syntax::codemap::{self, Span};
 use syntax::feature_gate::{emit_feature_err, GateIssue};
 use syntax::ast::{TyIs, TyUs, TyI8, TyU8, TyI16, TyU16, TyI32, TyU32, TyI64, TyU64};

src/librustc_metadata/encoder.rs

@@ -43,7 +43,6 @@ use std::u32;
 use syntax::abi;
 use syntax::ast::{self, NodeId, Name, CRATE_NODE_ID, CrateNum};
 use syntax::attr;
-use syntax::attr::AttrMetaMethods;
 use syntax::diagnostic::SpanHandler;
 use syntax::parse::token::special_idents;
 use syntax;

src/librustc_resolve/lib.rs

@@ -66,7 +66,6 @@ use rustc::util::nodemap::{NodeMap, DefIdSet, FnvHashMap};
 use syntax::ast;
 use syntax::ast::{CRATE_NODE_ID, Ident, Name, NodeId, CrateNum, TyIs, TyI8, TyI16, TyI32, TyI64};
 use syntax::ast::{TyUs, TyU8, TyU16, TyU32, TyU64, TyF64, TyF32};
-use syntax::attr::AttrMetaMethods;
 use syntax::parse::token::{self, special_names, special_idents};
 use syntax::codemap::{self, Span, Pos};
 use syntax::util::lev_distance::{lev_distance, max_suggestion_distance};

src/librustc_resolve/resolve_imports.rs

@@ -30,7 +30,6 @@ use rustc::middle::def_id::DefId;
 use rustc::middle::privacy::*;
 
 use syntax::ast::{NodeId, Name};
-use syntax::attr::AttrMetaMethods;
 use syntax::codemap::Span;
 
 use std::mem::replace;

src/librustc_trans/trans/common.rs

@@ -38,7 +38,7 @@ use trans::type_::Type;
 use trans::type_of;
 use middle::traits;
 use middle::ty::{self, HasTypeFlags, Ty};
-use middle::ty::fold::{TypeFolder, TypeFoldable};
+use middle::ty::fold::TypeFoldable;
 use rustc_front::hir;
 use rustc::mir::repr::Mir;
 use util::nodemap::{FnvHashMap, NodeMap};

src/librustc_trans/trans/monomorphize.rs

@@ -16,7 +16,7 @@ use middle::def_id::DefId;
 use middle::infer::normalize_associated_type;
 use middle::subst;
 use middle::subst::{Subst, Substs};
-use middle::ty::fold::{TypeFolder, TypeFoldable};
+use middle::ty::fold::TypeFoldable;
 use trans::attributes;
 use trans::base::{trans_enum_variant, push_ctxt, get_item_val};
 use trans::base::trans_fn;

src/librustc_typeck/check/intrinsic.rs

@@ -11,18 +11,15 @@
 //! Type-checking for the rust-intrinsic and platform-intrinsic
 //! intrinsics that the compiler exposes.
 
-use astconv::AstConv;
 use intrinsics;
 use middle::subst;
 use middle::ty::FnSig;
 use middle::ty::{self, Ty};
-use middle::ty::fold::TypeFolder;
 use {CrateCtxt, require_same_types};
 
 use std::collections::{HashMap};
 use syntax::abi;
 use syntax::ast;
-use syntax::attr::AttrMetaMethods;
 use syntax::codemap::Span;
 use syntax::parse::token;
 

src/librustc_typeck/check/method/mod.rs

@@ -10,7 +10,6 @@
 
 //! Method lookup: the secret sauce of Rust. See `README.md`.
 
-use astconv::AstConv;
 use check::FnCtxt;
 use middle::def;
 use middle::def_id::DefId;

src/librustc_typeck/check/method/suggest.rs

@@ -13,7 +13,6 @@
 
 use CrateCtxt;
 
-use astconv::AstConv;
 use check::{self, FnCtxt};
 use front::map as hir_map;
 use middle::ty::{self, Ty, ToPolyTraitRef, ToPredicate, HasTypeFlags};

src/librustc_typeck/check/mod.rs

@@ -100,7 +100,7 @@ use middle::ty::{self, HasTypeFlags, RegionEscape, ToPolyTraitRef, Ty};
 use middle::ty::{MethodCall, MethodCallee};
 use middle::ty::adjustment;
 use middle::ty::error::TypeError;
-use middle::ty::fold::{TypeFolder, TypeFoldable};
+use middle::ty::fold::TypeFoldable;
 use middle::ty::util::Representability;
 use require_c_abi_if_variadic;
 use rscope::{ElisionFailureInfo, RegionScope};

src/librustc_typeck/check/regionck.rs

@@ -82,7 +82,6 @@
 //! relation, except that a borrowed pointer never owns its
 //! contents.
 
-use astconv::AstConv;
 use check::dropck;
 use check::FnCtxt;
 use middle::free_region::FreeRegionMap;

src/librustc_typeck/check/wf.rs

@@ -8,7 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use astconv::AstConv;
 use check::{FnCtxt, Inherited, blank_fn_ctxt, regionck, wfcheck};
 use constrained_type_params::{identify_constrained_type_params, Parameter};
 use CrateCtxt;

src/librustc_typeck/check/wfcheck.rs

@@ -8,15 +8,13 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use astconv::AstConv;
 use check::{FnCtxt, Inherited, blank_fn_ctxt, regionck};
 use constrained_type_params::{identify_constrained_type_params, Parameter};
 use CrateCtxt;
 use middle::def_id::DefId;
 use middle::subst::{self, TypeSpace, FnSpace, ParamSpace, SelfSpace};
 use middle::traits;
 use middle::ty::{self, Ty};
-use middle::ty::fold::{TypeFolder};
 
 use std::cell::RefCell;
 use std::collections::HashSet;

src/librustc_typeck/check/writeback.rs

@@ -13,7 +13,6 @@
 // substitutions.
 use self::ResolveReason::*;
 
-use astconv::AstConv;
 use check::FnCtxt;
 use middle::def_id::DefId;
 use middle::pat_util;

src/librustc_typeck/collect.rs

@@ -78,7 +78,7 @@ use middle::subst::{Substs, FnSpace, ParamSpace, SelfSpace, TypeSpace, VecPerPar
 use middle::ty::{ToPredicate, ImplContainer, ImplOrTraitItemContainer, TraitContainer};
 use middle::ty::{self, RegionEscape, ToPolyTraitRef, Ty, TypeScheme};
 use middle::ty::{VariantKind};
-use middle::ty::fold::{TypeFolder, TypeFoldable};
+use middle::ty::fold::TypeFoldable;
 use middle::ty::util::IntTypeExt;
 use middle::infer;
 use rscope::*;

src/librustdoc/clean/inline.rs

@@ -13,7 +13,6 @@
 use std::collections::HashSet;
 
 use syntax::ast;
-use syntax::attr::AttrMetaMethods;
 use rustc_front::hir;
 
 use rustc::middle::cstore::{self, CrateStore};

src/libstd/sys/unix/fs.rs

@@ -8,7 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use io::prelude::*;
 use os::unix::prelude::*;
 
 use ffi::{CString, CStr, OsString, OsStr};

src/libsyntax/diagnostic.rs

@@ -289,8 +289,6 @@ pub enum Level {
 
 impl fmt::Display for Level {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        use std::fmt::Display;
-
         match *self {
             Bug => "error: internal compiler error".fmt(f),
             Fatal | Error => "error".fmt(f),

src/libsyntax/parse/mod.rs

@@ -19,7 +19,6 @@ use ptr::P;
 use str::char_at;
 
 use std::cell::RefCell;
-use std::io::Read;
 use std::iter;
 use std::path::{Path, PathBuf};
 use std::rc::Rc;

src/libsyntax/parse/parser.rs

@@ -78,7 +78,6 @@ use parse::PResult;
 use diagnostic::FatalError;
 
 use std::collections::HashSet;
-use std::io::prelude::*;
 use std::mem;
 use std::path::{Path, PathBuf};
 use std::rc::Rc;

src/libsyntax/util/interner.rs

@@ -115,14 +115,12 @@ impl Ord for RcStr {
 
 impl fmt::Debug for RcStr {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        use std::fmt::Debug;
         self[..].fmt(f)
     }
 }
 
 impl fmt::Display for RcStr {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        use std::fmt::Display;
         self[..].fmt(f)
     }
 }

src/libtest/lib.rs

@@ -58,9 +58,7 @@ use self::TestEvent::*;
 use self::NamePadding::*;
 use self::OutputLocation::*;
 
-use stats::Stats;
 use getopts::{OptGroup, optflag, optopt};
-use serialize::Encodable;
 use std::boxed::FnBox;
 use term::Terminal;
 use term::color::{Color, RED, YELLOW, GREEN, CYAN};

src/rustbook/main.rs

@@ -19,10 +19,8 @@ extern crate rustdoc;
 extern crate rustc_back;
 
 use std::env;
-use std::error::Error;
 use std::process;
 use std::sync::atomic::{AtomicIsize, ATOMIC_ISIZE_INIT, Ordering};
-use subcommand::Subcommand;
 use term::Term;
 
 mod term;