Adding and removing crate level cfg breaks macro expansion

[PizzaCrust]

Environment

• IntelliJ Rust plugin version: 0.3.145.3769-203-nightly
• Rust toolchain version: 1.53.0-nightly (07e0e2ec2 2021-03-24) x86_64-pc-windows-msvc
• IDE name and version: IntelliJ IDEA 2020.3.3 Community Edition (IC-203.7717.56)
• Operating system: Windows 10 10.0
• Macro expansion engine: new
• Name resolution engine: new

Problem description

Adding and removing a crate level cfg breaks macro expansion until restart

#![cfg(target_pointer_width = "64")]

macro_rules! anything {
    ($($tt:tt)*) => {
        $($tt)*
    };
}

anything!(pub struct A;);

Steps to reproduce

1. Place this code in the editor

macro_rules! anything {
    ($($tt:tt)*) => {
        $($tt)*
    };
}

anything!(pub struct A;);

2. Add a crate level cfg

#![cfg(target_pointer_width = "64")]

3. Remove cfg
   Now macro expansion is broken until the IDE restarts

[PizzaCrust]

I forgot to add how to trigger the bug in the initial post🤦

[mili-l]

see #9729