rust: globally deny rust_2018_idioms

Signed-off-by: Miguel Ojeda <[email protected]>

Author: ojeda

Makefile

@@ -526,7 +526,8 @@ KBUILD_RUSTCFLAGS := --emit=dep-info,obj,metadata --edition=2018 \
 		     -Cpanic=abort -Cembed-bitcode=n -Clto=n -Crpath=n \
 		     -Cforce-unwind-tables=n -Ccodegen-units=1 \
 		     -Zbinary_dep_depinfo=y -Zsymbol-mangling-version=v0 \
-		     -Dunsafe_op_in_unsafe_fn -Wmissing_docs
+		     -Dunsafe_op_in_unsafe_fn -Drust_2018_idioms \
+		     -Wmissing_docs
 KBUILD_CLIPPYFLAGS := -Dclippy::correctness -Dclippy::style \
 		      -Dclippy::complexity -Dclippy::perf
 KBUILD_AFLAGS_KERNEL :=

drivers/android/rust_binder.rs

@@ -7,6 +7,9 @@
 #![no_std]
 #![feature(global_asm, try_reserve, allocator_api, concat_idents)]
 
+// TODO: cleanup
+#![allow(rust_2018_idioms)]
+
 use alloc::{boxed::Box, sync::Arc};
 use core::pin::Pin;
 use kernel::{

rust/compiler_builtins.rs

@@ -139,7 +139,7 @@ extern "C" {
 }
 
 #[panic_handler]
-fn panic(_info: &core::panic::PanicInfo) -> ! {
+fn panic(_info: &core::panic::PanicInfo<'_>) -> ! {
     unsafe {
         rust_helper_BUG();
     }

rust/kernel/lib.rs

@@ -24,7 +24,6 @@
     receiver_trait,
     try_reserve
 )]
-#![deny(rust_2018_idioms)]
 
 // Ensure conditional compilation based on the kernel configuration works;
 // otherwise we may silently break things like initcall handling.