2 files changed, 0 insertions, 4 deletions
diff --git a/src/libstd/build.rs b/src/libstd/build.rs
index 20397369387..8db7bc12cd3 100644
--- a/src/libstd/build.rs
+++ b/src/libstd/build.rs
@@ -1,5 +1,3 @@
-#![deny(warnings)]
-
 use std::env;
 
 fn main() {
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index 722c08a22a6..1390341cf7c 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -209,8 +209,6 @@
 #![warn(missing_docs)]
 #![warn(missing_debug_implementations)]
 #![deny(intra_doc_link_resolution_failure)] // rustdoc is run without -D warnings
-
-#![deny(rust_2018_idioms)]
 #![allow(explicit_outlives_requirements)]
 
 // Tell the compiler to link to either panic_abort or panic_unwind