linux-kernel - rust/kernel/lib.rs:17:12 : warning: the feature `new_uninit` has been stable since 1.82.0 and no longer requires an attribute to enable

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Message-ID: <CA+G9fYvM96LS63Wa1+5Md9w0V0JZgBW+f50kzx9RjRCYj3aDkA@mail.gmail.com>
Date: Sun, 5 Jan 2025 14:12:05 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: open list <linux-kernel@...r.kernel.org>, rust-for-linux@...r.kernel.org, 
	"open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest@...r.kernel.org>, lkft-triage@...ts.linaro.org
Cc: Sasha Levin <sashal@...nel.org>, Anders Roxell <anders.roxell@...aro.org>, 
	Dan Carpenter <dan.carpenter@...aro.org>, Arnd Bergmann <arnd@...db.de>, 
	Miguel Ojeda <ojeda@...nel.org>
Subject: rust/kernel/lib.rs:17:12 : warning: the feature `new_uninit` has been
 stable since 1.82.0 and no longer requires an attribute to enable

The following kselftest rust builds failed on sashal/linus-next.git
due to following build warnings / errors.

Good: 829d8581c398a96deea1d6bc78578950347dcbec
Bad:   b2d472701a703596889c3fd067fd8929aeffc4be

Build error:
--------------
warning: the feature `new_uninit` has been stable since 1.82.0 and no
longer requires an attribute to enable
  --> /rust/kernel/lib.rs:17:12
   |
17 | #![feature(new_uninit)]
   |            ^^^^^^^^^^
   |
   = note: `#[warn(stable_features)]` on by default

error[E0658]: use of unstable library feature 'box_uninit_write'
  --> /rust/kernel/alloc/box_ext.rs:41:12
   |
41 |         Ok(Box::write(b, x))
   |            ^^^^^^^^^^
   |
   = note: see issue #129397
<https://github.com/rust-lang/rust/issues/129397> for more information
   = help: add `#![feature(box_uninit_write)]` to the crate attributes to enable
   = note: this compiler was built on 2024-11-26; consider upgrading
it if it is out of date

error: aborting due to 1 previous error; 1 warning emitted

For more information about this error, try `rustc --explain E0658`.
make[3]: *** [/rust/Makefile:425: rust/kernel.o] Error 1

Links:
-------
 - https://qa-reports.linaro.org/lkft/sashal-linus-next/build/v6.11-rc4-6237-gb2d472701a70/testrun/26563483/suite/build/test/rustgcc-lkftconfig-kselftest/log
 - https://qa-reports.linaro.org/lkft/sashal-linus-next/build/v6.11-rc4-6237-gb2d472701a70/testrun/26563483/suite/build/test/rustgcc-lkftconfig-kselftest/history/
 - https://qa-reports.linaro.org/lkft/sashal-linus-next/build/v6.11-rc4-6237-gb2d472701a70/testrun/26563483/suite/build/test/rustgcc-lkftconfig-kselftest/details/

metadata:
----
  git repo: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linus-next.git
  kernel config:
https://storage.tuxsuite.com/public/linaro/lkft/builds/2rByIOiC9ssqI7NjEPY7IcRs8SN/config
  build url: https://storage.tuxsuite.com/public/linaro/lkft/builds/2rByIOiC9ssqI7NjEPY7IcRs8SN/
  toolchain: rustgcc
  compiler: 'name': 'gcc', 'version': '14', 'version_full': 'gcc
(Debian 14.2.0-8) 14.2.0'
  config: rustgcc-lkftconfig-kselftest
  arch: arm64


 --
Linaro LKFT
https://lkft.linaro.org