Fix it

cranelift/codegen/src/isa/mod.rs

@@ -25,7 +25,7 @@
 //! # fn main() {
 //! use cranelift_codegen::isa;
 //! use cranelift_codegen::settings::{self, Configurable};
-//! use alloc::str::FromStr;
+//! use std::str::FromStr;
 //! use target_lexicon::Triple;
 //!
 //! let shared_builder = settings::builder();

cranelift/codegen/src/lib.rs

@@ -42,6 +42,8 @@
 )]
 #![no_std]
 
+#[allow(unused_imports)] // #[macro_use] is required for no_std
+#[macro_use]
 extern crate alloc;
 
 #[cfg(feature = "std")]

cranelift/frontend/src/lib.rs

@@ -183,6 +183,8 @@
 )]
 #![no_std]
 
+#[allow(unused_imports)] // #[macro_use] is required for no_std
+#[macro_use]
 extern crate alloc;
 
 #[cfg(feature = "std")]