Remove lint annotations in specific crates that are already enforced by rustbuild

Remove some random unnecessary lint `allow`s

4 files changed, 8 insertions, 31 deletions

diff --git a/src/librustc_interface/interface.rs b/src/librustc_interface/interface.rs
index 674b2b60e44..fef60a47dc4 100644
--- a/src/librustc_interface/interface.rs
+++ b/src/librustc_interface/interface.rs
@@ -12,7 +12,6 @@ use rustc_data_structures::OnDrop;
 use rustc_data_structures::sync::Lrc;
 use rustc_data_structures::fx::{FxHashSet, FxHashMap};
 use rustc_metadata::cstore::CStore;
-use std::io::Write;
 use std::path::PathBuf;
 use std::result;
 use std::sync::{Arc, Mutex};
diff --git a/src/librustc_interface/lib.rs b/src/librustc_interface/lib.rs
index 4bc50c24e81..f4e4612007c 100644
--- a/src/librustc_interface/lib.rs
+++ b/src/librustc_interface/lib.rs
@@ -6,11 +6,8 @@
 #![feature(generators)]
 #![cfg_attr(unix, feature(libc))]
 
-#![deny(rust_2018_idioms)]
 #![deny(unused_lifetimes)]
 
-#![allow(unused_imports)]
-
 #![recursion_limit="256"]
 
 #[cfg(unix)]
diff --git a/src/librustc_interface/passes.rs b/src/librustc_interface/passes.rs
index 3c7d854b36b..ac36ad7e30b 100644
--- a/src/librustc_interface/passes.rs
+++ b/src/librustc_interface/passes.rs
@@ -2,7 +2,7 @@ use crate::interface::{Compiler, Result};
 use crate::util;
 use crate::proc_macro_decls;
 
-use log::{debug, info, warn, log_enabled};
+use log::{info, warn, log_enabled};
 use rustc::dep_graph::DepGraph;
 use rustc::hir;
 use rustc::hir::lowering::lower_crate;
@@ -10,13 +10,11 @@ use rustc::hir::def_id::{CrateNum, LOCAL_CRATE};
 use rustc::lint;
 use rustc::middle::{self, reachable, resolve_lifetime, stability};
 use rustc::middle::cstore::CrateStore;
-use rustc::middle::privacy::AccessLevels;
 use rustc::ty::{self, AllArenas, Resolutions, TyCtxt, GlobalCtxt};
 use rustc::ty::steal::Steal;
 use rustc::traits;
 use rustc::util::common::{time, ErrorReported};
-use rustc::util::profiling::ProfileCategory;
-use rustc::session::{CompileResult, CrateDisambiguator, Session};
+use rustc::session::Session;
 use rustc::session::config::{self, CrateType, Input, OutputFilenames, OutputType};
 use rustc::session::search_paths::PathKind;
 use rustc_allocator as allocator;
@@ -25,31 +23,27 @@ use rustc_codegen_ssa::back::link::emit_metadata;
 use rustc_codegen_utils::codegen_backend::CodegenBackend;
 use rustc_codegen_utils::link::filename_for_metadata;
 use rustc_data_structures::{box_region_allow_access, declare_box_region_type, parallel};
-use rustc_data_structures::fingerprint::Fingerprint;
-use rustc_data_structures::stable_hasher::StableHasher;
 use rustc_data_structures::sync::{Lrc, ParallelIterator, par_iter};
 use rustc_incremental;
-use rustc_incremental::DepGraphFuture;
 use rustc_metadata::creader::CrateLoader;
 use rustc_metadata::cstore::{self, CStore};
 use rustc_mir as mir;
-use rustc_passes::{self, ast_validation, hir_stats, loops, rvalue_promotion, layout_test};
+use rustc_passes::{self, ast_validation, hir_stats, layout_test};
 use rustc_plugin as plugin;
 use rustc_plugin::registry::Registry;
 use rustc_privacy;
 use rustc_resolve::{Resolver, ResolverArenas};
 use rustc_traits;
 use rustc_typeck as typeck;
-use syntax::{self, ast, attr, diagnostics, visit};
+use syntax::{self, ast, diagnostics, visit};
 use syntax::early_buffered_lints::BufferedEarlyLint;
 use syntax::ext::base::{NamedSyntaxExtension, ExtCtxt};
 use syntax::mut_visit::MutVisitor;
 use syntax::parse::{self, PResult};
 use syntax::util::node_count::NodeCounter;
-use syntax::util::lev_distance::find_best_match_for_name;
 use syntax::symbol::Symbol;
 use syntax::feature_gate::AttributeType;
-use syntax_pos::{FileName, edition::Edition, hygiene};
+use syntax_pos::FileName;
 use syntax_ext;
 
 use rustc_serialize::json;
@@ -61,12 +55,11 @@ use std::ffi::OsString;
 use std::fs;
 use std::io::{self, Write};
 use std::iter;
-use std::path::{Path, PathBuf};
+use std::path::PathBuf;
 use std::sync::mpsc;
 use std::cell::RefCell;
 use std::rc::Rc;
 use std::mem;
-use std::ops::Generator;
 
 pub fn parse<'a>(sess: &'a Session, input: &Input) -> PResult<'a, ast::Crate> {
     sess.diagnostic()
diff --git a/src/librustc_interface/queries.rs b/src/librustc_interface/queries.rs
index 9b79dc6350c..2e7952cd004 100644
--- a/src/librustc_interface/queries.rs
+++ b/src/librustc_interface/queries.rs
@@ -2,30 +2,18 @@ use crate::interface::{Compiler, Result};
 use crate::passes::{self, BoxedResolver, ExpansionResult, BoxedGlobalCtxt, PluginInfo};
 
 use rustc_incremental::DepGraphFuture;
-use rustc_data_structures::sync::Lrc;
-use rustc::session::config::{Input, OutputFilenames, OutputType};
-use rustc::session::Session;
+use rustc::session::config::{OutputFilenames, OutputType};
 use rustc::util::common::{time, ErrorReported};
-use rustc::util::profiling::ProfileCategory;
-use rustc::lint;
 use rustc::hir;
 use rustc::hir::def_id::LOCAL_CRATE;
-use rustc::ty;
 use rustc::ty::steal::Steal;
 use rustc::dep_graph::DepGraph;
-use rustc_passes::hir_stats;
-use rustc_plugin::registry::Registry;
-use rustc_serialize::json;
 use std::cell::{Ref, RefMut, RefCell};
-use std::ops::Deref;
 use std::rc::Rc;
 use std::sync::mpsc;
 use std::any::Any;
 use std::mem;
-use syntax::parse::{self, PResult};
-use syntax::util::node_count::NodeCounter;
-use syntax::{self, ast, attr, diagnostics, visit};
-use syntax_pos::hygiene;
+use syntax::{self, ast};
 
 /// Represent the result of a query.
 /// This result can be stolen with the `take` method and returned with the `give` method.