rust_2021_prelude_collisions invalid suggestion when trait is glob imported

[ehuss]

I tried this code:

#![allow(unused)]
#![warn(rust_2021_prelude_collisions)]

pub mod my_try {
    pub trait MyTry: Sized {
        fn try_from<V>(value: V) -> Result<Self, ()>;
    }
}

use my_try::*;

struct Foo;
struct Bar;

impl MyTry for Bar {
    fn try_from<V>(value: V) -> Result<Self, ()> {
        unimplemented!()
    }
}

pub fn foo() {
    let x = Foo;
    let y = Bar::try_from(x);
}

This has the suggestion to replace the code with:

    let y = <Bar as >::try_from(x);

which is invalid syntax. The suggestion should be something like:

    let y = <Bar as MyTry>::try_from(x);

Found in 2021 crater run for:

• https://crater-reports.s3.amazonaws.com/pr-87190-3/try%23a7a572ce3edd6d476191fbfe92c9c1986e009b34/reg/pyportus-0.5.0/log.txt

Meta

rustc --version --verbose:

rustc 1.56.0-nightly (5eacec9ec 2021-08-28)
binary: rustc
commit-hash: 5eacec9ec7e112a0de1011519a57c45586d58414
commit-date: 2021-08-28
host: x86_64-apple-darwin
release: 1.56.0-nightly
LLVM version: 13.0.0