Remove some unused imports

Author: alexcrichton

src/cargo/core/dependency.rs

@@ -114,7 +114,7 @@ impl Dependency {
     }
 
     /// Lock this dependency to depending on the specified package id
-    pub fn lock_to(mut self, id: &PackageId) -> Dependency {
+    pub fn lock_to(self, id: &PackageId) -> Dependency {
         assert_eq!(self.source_id, *id.get_source_id());
         assert!(self.req.matches(id.get_version()));
         self.version_req(VersionReq::exact(id.get_version()))

src/cargo/ops/cargo_fetch.rs

@@ -1,11 +1,9 @@
-use core::{MultiShell, Package};
+use core::MultiShell;
 use core::registry::PackageRegistry;
-use core::resolver::{mod, Resolve};
 use core::source::Source;
 use ops;
 use sources::PathSource;
 use util::{CargoResult, Config};
-use util::profile;
 
 /// Executes `cargo fetch`.
 pub fn fetch(manifest_path: &Path,

src/cargo/ops/cargo_generate_lockfile.rs

@@ -1,16 +1,11 @@
 use std::collections::HashSet;
-use std::io::File;
-
-use serialize::{Encodable, Decodable};
-use toml::{mod, Encoder};
 
 use core::PackageId;
 use core::registry::PackageRegistry;
-use core::{MultiShell, Source, Resolve, resolver, Package, SourceId};
+use core::{MultiShell, Source, Resolve, resolver};
 use ops;
 use sources::{PathSource};
 use util::config::{Config};
-use util::toml as cargo_toml;
 use util::{CargoResult, human};
 
 pub struct UpdateOptions<'a> {

src/cargo/ops/cargo_package.rs

@@ -7,7 +7,7 @@ use flate2::{GzBuilder, BestCompression};
 use flate2::reader::GzDecoder;
 
 use core::source::{Source, SourceId};
-use core::{Package, MultiShell, Dependency};
+use core::{Package, MultiShell};
 use sources::PathSource;
 use util::{CargoResult, human, internal, ChainError, Require};
 use ops;

src/cargo/ops/lockfile.rs

@@ -1,15 +1,10 @@
-use std::collections::HashSet;
 use std::io::File;
 
 use serialize::{Encodable, Decodable};
 use toml::{mod, Encoder};
 
-use core::registry::PackageRegistry;
-use core::{MultiShell, Source, Resolve, resolver, Package, SourceId};
-use core::PackageId;
-use sources::{PathSource};
-use util::config::{Config};
-use util::{CargoResult, human};
+use core::{Resolve, resolver, Package, SourceId};
+use util::CargoResult;
 use util::toml as cargo_toml;
 
 pub fn load_pkg_lockfile(pkg: &Package) -> CargoResult<Option<Resolve>> {

src/cargo/ops/resolve.rs

@@ -1,15 +1,10 @@
 use std::collections::{HashMap, HashSet};
 
-use semver::VersionReq;
-
-use core::{MultiShell, Package, PackageId};
+use core::{Package, PackageId};
 use core::registry::PackageRegistry;
 use core::resolver::{mod, Resolve};
-use core::source::Source;
 use ops;
-use sources::PathSource;
-use util::{CargoResult, Config};
-use util::profile;
+use util::CargoResult;
 
 /// Resolve all dependencies for the specified `package` using the previous
 /// lockfile as a guide if present.