Remove unused imports

crates/crates-io/lib.rs

@@ -11,7 +11,6 @@ use anyhow::{bail, Result};
 use curl::easy::{Easy, List};
 use percent_encoding::{percent_encode, NON_ALPHANUMERIC};
 use serde::{Deserialize, Serialize};
-use serde_json;
 use url::Url;
 
 pub struct Registry {

src/bin/cargo/cli.rs

@@ -1,9 +1,6 @@
-use clap;
-
-use clap::{AppSettings, Arg, ArgMatches};
-
 use cargo::core::features;
 use cargo::{self, CliResult, Config};
+use clap::{AppSettings, Arg, ArgMatches};
 
 use super::commands;
 use super::list_commands;

src/cargo/core/package_id.rs

@@ -6,7 +6,6 @@ use std::path::Path;
 use std::ptr;
 use std::sync::Mutex;
 
-use semver;
 use serde::de;
 use serde::ser;
 

src/cargo/core/resolver/errors.rs

@@ -4,7 +4,6 @@ use crate::core::{Dependency, PackageId, Registry, Summary};
 use crate::util::lev_distance::lev_distance;
 use crate::util::Config;
 use anyhow::Error;
-use semver;
 
 use super::context::Context;
 use super::types::{ConflictMap, ConflictReason};

src/cargo/core/resolver/types.rs

@@ -3,7 +3,6 @@ use crate::core::interning::InternedString;
 use crate::core::{Dependency, PackageId, Summary};
 use crate::util::errors::CargoResult;
 use crate::util::Config;
-use im_rc;
 use std::cmp::Ordering;
 use std::collections::{BTreeMap, BTreeSet};
 use std::ops::Range;

src/cargo/core/shell.rs

@@ -1,7 +1,6 @@
 use std::fmt;
 use std::io::prelude::*;
 
-use atty;
 use termcolor::Color::{Cyan, Green, Red, Yellow};
 use termcolor::{self, Color, ColorSpec, StandardStream, WriteColor};
 
@@ -382,11 +381,8 @@ impl ColorChoice {
 
 #[cfg(any(target_os = "linux", target_os = "macos", target_os = "freebsd"))]
 mod imp {
-    use std::mem;
-
-    use libc;
-
     use super::Shell;
+    use std::mem;
 
     pub fn stderr_width() -> Option<usize> {
         unsafe {

src/cargo/ops/cargo_new.rs

@@ -15,8 +15,6 @@ use std::path::{Path, PathBuf};
 use std::process::Command;
 use std::str::{from_utf8, FromStr};
 
-use toml;
-
 #[derive(Clone, Copy, Debug, PartialEq)]
 pub enum VersionControl {
     Git,

src/cargo/ops/lockfile.rs

@@ -1,7 +1,5 @@
 use std::io::prelude::*;
 
-use toml;
-
 use crate::core::{resolver, Resolve, ResolveVersion, Workspace};
 use crate::util::errors::{CargoResult, CargoResultExt};
 use crate::util::toml as cargo_toml;

src/cargo/util/flock.rs

@@ -4,8 +4,6 @@ use std::io::{Read, Seek, SeekFrom, Write};
 use std::path::{Display, Path, PathBuf};
 
 use fs2::{lock_contended_error, FileExt};
-#[allow(unused_imports)]
-use libc;
 use termcolor::Color::Cyan;
 #[cfg(windows)]
 use winapi::shared::winerror::ERROR_INVALID_FUNCTION;

src/cargo/util/graph.rs

@@ -2,8 +2,6 @@ use std::borrow::Borrow;
 use std::collections::BTreeSet;
 use std::fmt;
 
-use im_rc;
-
 pub struct Graph<N: Clone, E: Clone> {
     nodes: im_rc::OrdMap<N, im_rc::OrdMap<N, E>>,
 }

src/cargo/util/hex.rs

@@ -1,6 +1,5 @@
 #![allow(deprecated)]
 
-use hex;
 use std::hash::{Hash, Hasher, SipHasher};
 
 pub fn to_hex(num: u64) -> String {

src/cargo/util/job.rs

@@ -23,7 +23,6 @@ pub fn setup() -> Option<Setup> {
 
 #[cfg(unix)]
 mod imp {
-    use libc;
     use std::env;
 
     pub type Setup = ();

src/cargo/util/network.rs

@@ -1,6 +1,3 @@
-use curl;
-use git2;
-
 use anyhow::Error;
 
 use crate::util::errors::{CargoResult, HttpNot200};

src/cargo/util/read2.rs

@@ -2,7 +2,6 @@ pub use self::imp::read2;
 
 #[cfg(unix)]
 mod imp {
-    use libc;
     use std::io;
     use std::io::prelude::*;
     use std::mem;

src/cargo/util/sha256.rs

@@ -1,6 +1,5 @@
-use self::crypto_hash::{Algorithm, Hasher};
 use crate::util::{CargoResult, CargoResultExt};
-use crypto_hash;
+use crypto_hash::{Algorithm, Hasher};
 use std::fs::File;
 use std::io::{self, Read, Write};
 use std::path::Path;

src/cargo/util/vcs.rs

@@ -1,6 +1,5 @@
 use crate::util::paths;
 use crate::util::{process, CargoResult};
-use git2;
 use std::path::Path;
 
 // Check if we are in an existing repo. We define that to be true if either: