Switch confusable_idents lint to warn.

src/liballoc/tests/lib.rs

@@ -15,6 +15,7 @@
 #![feature(vec_remove_item)]
 #![feature(split_inclusive)]
 #![feature(binary_heap_retain)]
+#![allow(unknown_lints, confusable_idents)]
 
 use std::collections::hash_map::DefaultHasher;
 use std::hash::{Hash, Hasher};

src/libcore/lib.rs

@@ -62,6 +62,7 @@
 #![warn(missing_docs)]
 #![warn(missing_debug_implementations)]
 #![deny(intra_doc_link_resolution_failure)] // rustdoc is run without -D warnings
+#![allow(unknown_lints, confusable_idents)]
 #![allow(explicit_outlives_requirements)]
 #![allow(incomplete_features)]
 #![feature(allow_internal_unstable)]

src/libcore/tests/lib.rs

@@ -43,6 +43,7 @@
 #![feature(leading_trailing_ones)]
 #![feature(const_forget)]
 #![feature(option_unwrap_none)]
+#![allow(unknown_lints, confusable_idents)]
 
 extern crate test;
 

src/librustc_ast/lib.rs

@@ -18,6 +18,7 @@
 #![feature(try_trait)]
 #![feature(unicode_internals)]
 #![recursion_limit = "256"]
+#![allow(unknown_lints, confusable_idents)]
 
 #[macro_export]
 macro_rules! unwrap_or {

src/librustc_ast_lowering/lib.rs

@@ -36,6 +36,7 @@
 #![feature(specialization)]
 #![feature(or_patterns)]
 #![recursion_limit = "256"]
+#![allow(unknown_lints, confusable_idents)]
 
 use rustc_ast::ast;
 use rustc_ast::ast::*;

src/librustc_codegen_ssa/lib.rs

@@ -8,6 +8,7 @@
 #![feature(trusted_len)]
 #![feature(associated_type_bounds)]
 #![recursion_limit = "256"]
+#![allow(unknown_lints, confusable_idents)]
 
 //! This crate contains codegen code that is used by all codegen backends (LLVM and others).
 //! The backend-agnostic functions of this crate use functions defined in various traits that

src/librustc_data_structures/lib.rs

@@ -23,6 +23,7 @@
 #![feature(associated_type_bounds)]
 #![feature(thread_id_value)]
 #![allow(rustc::default_hash_types)]
+#![allow(unknown_lints, confusable_idents)]
 
 #[macro_use]
 extern crate log;

src/librustc_expand/lib.rs

@@ -7,6 +7,7 @@
 #![feature(proc_macro_internals)]
 #![feature(proc_macro_span)]
 #![feature(try_blocks)]
+#![allow(unknown_lints, confusable_idents)]
 
 extern crate proc_macro as pm;
 

src/librustc_hir/lib.rs

@@ -10,6 +10,7 @@
 #![feature(or_patterns)]
 #![feature(specialization)]
 #![recursion_limit = "256"]
+#![allow(unknown_lints, confusable_idents)]
 
 #[macro_use]
 extern crate rustc_data_structures;

src/librustc_incremental/lib.rs

@@ -4,6 +4,7 @@
 #![feature(in_band_lifetimes)]
 #![feature(nll)]
 #![recursion_limit = "256"]
+#![allow(unknown_lints, confusable_idents)]
 
 #[macro_use]
 extern crate rustc_middle;

src/librustc_infer/lib.rs

@@ -22,6 +22,7 @@
 #![feature(in_band_lifetimes)]
 #![feature(crate_visibility_modifier)]
 #![recursion_limit = "512"] // For rustdoc
+#![allow(unknown_lints, confusable_idents)]
 
 #[macro_use]
 extern crate rustc_macros;

src/librustc_lint/non_ascii_idents.rs

@@ -15,10 +15,9 @@ declare_lint! {
     "detects uncommon Unicode codepoints in identifiers"
 }
 
-// FIXME: Change this to warn.
 declare_lint! {
     pub CONFUSABLE_IDENTS,
-    Allow,
+    Warn,
     "detects uncommon Unicode codepoints in identifiers"
 }
 

src/librustc_metadata/lib.rs

@@ -10,6 +10,7 @@
 #![feature(specialization)]
 #![feature(stmt_expr_attributes)]
 #![recursion_limit = "256"]
+#![allow(unknown_lints, confusable_idents)]
 
 extern crate proc_macro;
 

src/librustc_middle/lib.rs

@@ -52,6 +52,7 @@
 #![feature(hash_raw_entry)]
 #![feature(int_error_matching)]
 #![recursion_limit = "512"]
+#![allow(unknown_lints, confusable_idents)]
 
 #[macro_use]
 extern crate bitflags;

src/librustc_mir/lib.rs

@@ -28,6 +28,7 @@ Rust MIR: a lowered representation of Rust.
 #![feature(option_expect_none)]
 #![feature(or_patterns)]
 #![recursion_limit = "256"]
+#![allow(unknown_lints, confusable_idents)]
 
 #[macro_use]
 extern crate log;

src/librustc_mir_build/lib.rs

@@ -11,6 +11,7 @@
 #![feature(bool_to_option)]
 #![feature(or_patterns)]
 #![recursion_limit = "256"]
+#![allow(unknown_lints, confusable_idents)]
 
 #[macro_use]
 extern crate log;

src/librustc_trait_selection/lib.rs

@@ -19,6 +19,7 @@
 #![feature(str_strip)]
 #![feature(option_zip)]
 #![recursion_limit = "512"] // For rustdoc
+#![allow(unknown_lints, confusable_idents)]
 
 #[macro_use]
 extern crate rustc_macros;

src/librustc_typeck/lib.rs

@@ -67,6 +67,7 @@ This API is completely unstable and subject to change.
 #![feature(never_type)]
 #![feature(slice_partition_dedup)]
 #![recursion_limit = "256"]
+#![allow(unknown_lints, confusable_idents)]
 
 #[macro_use]
 extern crate log;

src/librustdoc/lib.rs

@@ -14,6 +14,7 @@
 #![feature(crate_visibility_modifier)]
 #![feature(never_type)]
 #![recursion_limit = "256"]
+#![allow(unknown_lints, confusable_idents)]
 
 extern crate env_logger;
 extern crate rustc_ast;

src/libserialize/lib.rs

@@ -14,6 +14,7 @@ Core encoding and decoding interfaces.
 #![feature(never_type)]
 #![feature(nll)]
 #![feature(associated_type_bounds)]
+#![allow(unknown_lints, confusable_idents)]
 #![cfg_attr(test, feature(test))]
 #![allow(rustc::internal)]
 

src/libstd/lib.rs

@@ -211,6 +211,7 @@
 #![warn(missing_docs)]
 #![warn(missing_debug_implementations)]
 #![deny(intra_doc_link_resolution_failure)] // rustdoc is run without -D warnings
+#![allow(unknown_lints, confusable_idents)]
 #![allow(explicit_outlives_requirements)]
 #![allow(unused_lifetimes)]
 // Tell the compiler to link to either panic_abort or panic_unwind

src/test/ui/issues/issue-40003.rs

@@ -1,5 +1,6 @@
 // run-pass
 #![allow(unused_must_use)]
+#![allow(unknown_lints, confusable_idents)]
 fn main() {
     if false { test(); }
 }