use std::os::unix::io::AsRawFd can't not completion

[Sherlock-Holo]

Environment

• IntelliJ Rust plugin version:

0.2.117.2854-193-nightly

• Rust toolchain version:

rustc 1.43.0-nightly (a1912f2e8 2020-02-12)
binary: rustc
commit-hash: a1912f2e89b77cfe2a0e64b96f444848fe4e2d49
commit-date: 2020-02-12
host: x86_64-unknown-linux-gnu
release: 1.43.0-nightly
LLVM version: 9.0

• IDE name and version:

clion 3.4

• Operating system:

Archlinux

Problem description

use std::os::unix::io::AsRawFd can't complet codes

Steps to reproduce

1. use std::os::unix::io::AsRawFd
2. use this trait in codes
3. input as_raw
4. nothing in complete list

[Undin]

Looks like it's related to wrong cfg attributes evaluation in stdlib
@ortem Could you take a look?

[Sherlock-Holo]

@Undin @ortem Hello, is there any progress about it?

[artemmukhin]

@Sherlock-Holo Sorry for the long reply. This issue is strongly related to #3957.

[Sherlock-Holo]

ok, I will watch #3957 too