[PATCH 02/10] rust: pin-init: bump minimum Rust version to 1.82

[Gary Guo <gary@garyguo.net>]

Following the kernel minimum version bump in commit f32fb9c58a5b ("rust:
bump Rust minimum supported version to 1.85.0 (Debian Trixie)"), bump
pin-init's minimum Rust version to 1.82.

This removes the `lint_reasons` feature which is stabilized in 1.81 and the
`raw_ref_ops` and `new_uninit` features which are stabilized in 1.82.

Given we do not use any features that are stabilized in 1.82..=1.85 range,
and pin-init crate is useful for other projects which may have their own
MSRV requirements, the minimum version is not straightly bumped to 1.85.

Reviewed-by: Benno Lossin <lossin@kernel.org>
Signed-off-by: Gary Guo <gary@garyguo.net>
---
 rust/pin-init/examples/big_struct_in_place.rs | 3 ---
 rust/pin-init/examples/linked_list.rs         | 2 --
 rust/pin-init/examples/mutex.rs               | 2 --
 rust/pin-init/examples/pthread_mutex.rs       | 2 --
 rust/pin-init/examples/static_init.rs         | 2 --
 rust/pin-init/internal/src/lib.rs             | 1 -
 rust/pin-init/src/lib.rs                      | 6 ------
 7 files changed, 18 deletions(-)

diff --git a/rust/pin-init/examples/big_struct_in_place.rs b/rust/pin-init/examples/big_struct_in_place.rs
index 80f89b5f8fd6..c05139927486 100644
--- a/rust/pin-init/examples/big_struct_in_place.rs
+++ b/rust/pin-init/examples/big_struct_in_place.rs
@@ -1,8 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 
-#![cfg_attr(USE_RUSTC_FEATURES, feature(lint_reasons))]
-#![cfg_attr(USE_RUSTC_FEATURES, feature(raw_ref_op))]
-
 use pin_init::*;
 
 // Struct with size over 1GiB
diff --git a/rust/pin-init/examples/linked_list.rs b/rust/pin-init/examples/linked_list.rs
index 119169e4dc41..424585fe226d 100644
--- a/rust/pin-init/examples/linked_list.rs
+++ b/rust/pin-init/examples/linked_list.rs
@@ -2,8 +2,6 @@
 
 #![allow(clippy::undocumented_unsafe_blocks)]
 #![cfg_attr(feature = "alloc", feature(allocator_api))]
-#![cfg_attr(USE_RUSTC_FEATURES, feature(lint_reasons))]
-#![cfg_attr(USE_RUSTC_FEATURES, feature(raw_ref_op))]
 
 use core::{
     cell::Cell,
diff --git a/rust/pin-init/examples/mutex.rs b/rust/pin-init/examples/mutex.rs
index d53671f0edb8..8ed2d3219eb1 100644
--- a/rust/pin-init/examples/mutex.rs
+++ b/rust/pin-init/examples/mutex.rs
@@ -2,8 +2,6 @@
 
 #![allow(clippy::undocumented_unsafe_blocks)]
 #![cfg_attr(feature = "alloc", feature(allocator_api))]
-#![cfg_attr(USE_RUSTC_FEATURES, feature(lint_reasons))]
-#![cfg_attr(USE_RUSTC_FEATURES, feature(raw_ref_op))]
 #![allow(clippy::missing_safety_doc)]
 
 use core::{
diff --git a/rust/pin-init/examples/pthread_mutex.rs b/rust/pin-init/examples/pthread_mutex.rs
index f3b5cc9b7134..4a66316471af 100644
--- a/rust/pin-init/examples/pthread_mutex.rs
+++ b/rust/pin-init/examples/pthread_mutex.rs
@@ -3,8 +3,6 @@
 // inspired by <https://github.com/nbdd0121/pin-init/blob/trunk/examples/pthread_mutex.rs>
 #![allow(clippy::undocumented_unsafe_blocks)]
 #![cfg_attr(feature = "alloc", feature(allocator_api))]
-#![cfg_attr(USE_RUSTC_FEATURES, feature(lint_reasons))]
-#![cfg_attr(USE_RUSTC_FEATURES, feature(raw_ref_op))]
 
 #[cfg(not(windows))]
 mod pthread_mtx {
diff --git a/rust/pin-init/examples/static_init.rs b/rust/pin-init/examples/static_init.rs
index f7e53d1a5ae6..906b96c5d4b9 100644
--- a/rust/pin-init/examples/static_init.rs
+++ b/rust/pin-init/examples/static_init.rs
@@ -2,8 +2,6 @@
 
 #![allow(clippy::undocumented_unsafe_blocks)]
 #![cfg_attr(feature = "alloc", feature(allocator_api))]
-#![cfg_attr(USE_RUSTC_FEATURES, feature(lint_reasons))]
-#![cfg_attr(USE_RUSTC_FEATURES, feature(raw_ref_op))]
 #![allow(unused_imports)]
 
 use core::{
diff --git a/rust/pin-init/internal/src/lib.rs b/rust/pin-init/internal/src/lib.rs
index b08dfe003031..60d5093f3128 100644
--- a/rust/pin-init/internal/src/lib.rs
+++ b/rust/pin-init/internal/src/lib.rs
@@ -6,7 +6,6 @@
 
 //! `pin-init` proc macros.
 
-#![cfg_attr(USE_RUSTC_FEATURES, feature(lint_reasons))]
 // Documentation is done in the pin-init crate instead.
 #![allow(missing_docs)]
 
diff --git a/rust/pin-init/src/lib.rs b/rust/pin-init/src/lib.rs
index 64eec095c859..4f50994bd268 100644
--- a/rust/pin-init/src/lib.rs
+++ b/rust/pin-init/src/lib.rs
@@ -263,12 +263,6 @@
 //! [`impl Init<T, E>`]: crate::Init
 //! [Rust-for-Linux]: https://rust-for-linux.com/
 
-#![cfg_attr(USE_RUSTC_FEATURES, feature(lint_reasons))]
-#![cfg_attr(USE_RUSTC_FEATURES, feature(raw_ref_op))]
-#![cfg_attr(
-    all(any(feature = "alloc", feature = "std"), USE_RUSTC_FEATURES),
-    feature(new_uninit)
-)]
 #![forbid(missing_docs, unsafe_op_in_unsafe_fn)]
 #![cfg_attr(not(feature = "std"), no_std)]
 #![cfg_attr(feature = "alloc", feature(allocator_api))]

-- 
2.51.2