auto merge of #6632 : steveklabnik/rust/remove_more_warnings, r=thestinger

With this, the build is almost 100% warning free.

One more can be fixed after the next snapshot, and there's one other that I filed an issue about already.

Author: bors

src/libcore/rt/uv/mod.rs

@@ -270,8 +270,8 @@ pub fn uv_error_to_io_error(uverr: UvError) -> IoError {
             ECONNREFUSED => ConnectionRefused,
             ECONNRESET => ConnectionReset,
             EPIPE => BrokenPipe,
-            e => {
-                rtdebug!("e %u", e as uint);
+            _ => {
+                rtdebug!("uverr.code %u", uverr.code as uint);
                 // XXX: Need to map remaining uv error types
                 OtherIoError
             }

src/librustc/middle/borrowck/gather_loans/lifetime.rs

@@ -11,7 +11,6 @@
 //! This module implements the check that the lifetime of a borrow
 //! does not exceed the lifetime of the value being borrowed.
 
-use core::prelude::*;
 use middle::borrowck::*;
 use mc = middle::mem_categorization;
 use middle::ty;

src/librustc/middle/borrowck/gather_loans/mod.rs

@@ -16,8 +16,6 @@
 // their associated scopes.  In phase two, checking loans, we will then make
 // sure that all of these loans are honored.
 
-use core::prelude::*;
-
 use middle::borrowck::*;
 use mc = middle::mem_categorization;
 use middle::pat_util;

src/librustc/middle/borrowck/gather_loans/restrictions.rs

@@ -10,7 +10,6 @@
 
 //! Computes the restrictions that result from a borrow.
 
-use core::prelude::*;
 use middle::borrowck::*;
 use mc = middle::mem_categorization;
 use middle::ty;

src/librustc/middle/borrowck/mod.rs

@@ -10,8 +10,6 @@
 
 /*! See doc.rs for a thorough explanation of the borrow checker */
 
-use core::prelude::*;
-
 use mc = middle::mem_categorization;
 use middle::ty;
 use middle::typeck;

src/librustc/middle/dataflow.rs

@@ -16,7 +16,6 @@
  * GEN and KILL bits for each expression.
  */
 
-use core::prelude::*;
 use core::cast;
 use core::uint;
 use syntax::ast;

src/librustc/middle/trans/consts.rs

@@ -30,7 +30,6 @@ use util::ppaux::{Repr, ty_to_str};
 
 use core::libc::c_uint;
 use syntax::{ast, ast_util, ast_map};
-use util::ppaux::ty_to_str;
 
 pub fn const_lit(cx: @CrateContext, e: @ast::expr, lit: ast::lit)
     -> ValueRef {

src/librustc/middle/trans/expr.rs

@@ -145,7 +145,7 @@ use middle::trans::type_of;
 use middle::ty::struct_fields;
 use middle::ty::{AutoDerefRef, AutoAddEnv};
 use middle::ty::{AutoPtr, AutoBorrowVec, AutoBorrowVecRef, AutoBorrowFn,
-                 AutoDerefRef, AutoAddEnv, AutoUnsafe};
+                 AutoUnsafe};
 use middle::ty;
 use util::common::indenter;
 use util::ppaux::Repr;

src/librustc/middle/typeck/infer/combine.rs

@@ -62,7 +62,7 @@ use middle::typeck::infer::glb::Glb;
 use middle::typeck::infer::lub::Lub;
 use middle::typeck::infer::sub::Sub;
 use middle::typeck::infer::to_str::InferStr;
-use middle::typeck::infer::{cres, InferCtxt, ures, IntType, UintType};
+use middle::typeck::infer::{cres, InferCtxt, ures};
 use util::common::indent;
 
 use core::result::{iter_vec2, map_vec2};

src/librustc/middle/typeck/infer/lattice.rs

@@ -41,8 +41,6 @@ use middle::typeck::infer::glb::Glb;
 use middle::typeck::infer::lub::Lub;
 use middle::typeck::infer::unify::*;
 use middle::typeck::infer::sub::Sub;
-use middle::typeck::infer::lub::Lub;
-use middle::typeck::infer::glb::Glb;
 use middle::typeck::infer::to_str::InferStr;
 use util::common::indenter;
 

src/librustpkg/util.rs

@@ -16,7 +16,7 @@ use rustc::driver::{driver, session};
 use rustc::metadata::filesearch;
 use std::getopts::groups::getopts;
 use std::semver;
-use std::{term, getopts};
+use std::term;
 use syntax::ast_util::*;
 use syntax::codemap::{dummy_sp, spanned, dummy_spanned};
 use syntax::ext::base::{mk_ctxt, ext_ctxt};

src/libsyntax/opt_vec.rs

@@ -16,7 +16,6 @@
  * other useful things like `push()` and `len()`.
  */
 
-use core::prelude::*;
 use core::old_iter;
 use core::old_iter::BaseIter;
 

src/libsyntax/parse/parser.rs

@@ -30,10 +30,10 @@ use ast::{expr_ret, expr_self, expr_struct, expr_tup, expr_unary};
 use ast::{expr_vec, expr_vstore, expr_vstore_mut_box};
 use ast::{expr_vstore_slice, expr_vstore_box};
 use ast::{expr_vstore_mut_slice, expr_while, extern_fn, field, fn_decl};
-use ast::{expr_vstore_uniq, TyClosure, TyBareFn, Onceness, Once, Many};
+use ast::{expr_vstore_uniq, Onceness, Once, Many};
 use ast::{foreign_item, foreign_item_const, foreign_item_fn, foreign_mod};
 use ast::{ident, impure_fn, inherited, item, item_, item_const};
-use ast::{item_const, item_enum, item_fn, item_foreign_mod, item_impl};
+use ast::{item_enum, item_fn, item_foreign_mod, item_impl};
 use ast::{item_mac, item_mod, item_struct, item_trait, item_ty, lit, lit_};
 use ast::{lit_bool, lit_float, lit_float_unsuffixed, lit_int};
 use ast::{lit_int_unsuffixed, lit_nil, lit_str, lit_uint, local, m_const};