rustc 1.72.0 hangs on release build of the simple example in rfd crate

[gen-xu]

I tried this code:

https://github.com/PolyMeilex/rfd/tree/0.11.4
with

cargo build --example simple --release --no-default-features --features xdg-portal

seems like it would basically hang on the following code

        Box::pin(async {
            OpenFileRequest::default()
                .accept_label("Pick file")
                .multiple(false)
                .title(&*self.title.unwrap_or_else(|| "Pick a file".to_string()))
                .filters(self.filters.into_iter().map(From::from))
                .send()
                .await
                .ok()
                .and_then(|request| request.response().ok())
                .and_then(|response| {
                    response
                        .uris()
                        .get(0)
                        .and_then(|uri| uri.to_file_path().ok())
                })
                .map(FileHandle::from)
        })

with RUSTC_LOG=TRACE hangs here

INFO rustc_trait_selection::traits::query::normalize normalize::<rustc_middle::ty::subst::GenericArg>: result=Ok(std::vec::IntoIter<T, A>) with 0 obligations
┐rustc_trait_selection::traits::project::normalize_with_depth_to depth=1, value=Binder { value: TraitPredicate(<[closure@src/backend/xdg_desktop_portal.rs:36:18: 36:35] as std::marker::Freeze>, polarity:Positive), bound_vars: [] }
┘
┐rustc_trait_selection::traits::project::normalize_with_depth_to depth=1, value=()
┘
┐rustc_trait_selection::traits::project::normalize_with_depth_to depth=1, value=Binder { value: TraitPredicate(<std::pin::Pin<&mut [async block@src/backend/xdg_desktop_portal.rs:43:18: 60:10]> as std::marker::Freeze>, polarity:Positive), bound_vars: [] }

I expected to see this happen: rustc 1.71.1 finishes same command above within 10 seconds

   Compiling zbus v3.14.1
   Compiling futures-executor v0.3.28
   Compiling futures v0.3.28
   Compiling ashpd v0.6.2
    Finished release [optimized] target(s) in 9.99s

Instead, this happened: rustc 1.72.0 stuck at compiling rfd for more than 5 minutes

   ...
   Compiling futures v0.3.28
   Compiling ashpd v0.6.2
    Building [=======================> ] 154/156: rfd 

Note that only --release build hangs, dev profile build works fine

Meta

rustc --version --verbose:

rustc 1.71.1 (eb26296b5 2023-08-03)
binary: rustc
commit-hash: eb26296b556cef10fb713a38f3d16b9886080f26
commit-date: 2023-08-03
host: x86_64-unknown-linux-gnu
release: 1.71.1
LLVM version: 16.0.5

rustc 1.72.0 (5680fa18f 2023-08-23)
binary: rustc
commit-hash: 5680fa18feaa87f3ff04063800aec256c3d4b4be
commit-date: 2023-08-23
host: x86_64-unknown-linux-gnu
release: 1.72.0
LLVM version: 16.0.5

Backtrace

No backtrace as it just hangs. Rustc trace level log provided though.

https://github.com/rust-lang/rust/files/12438619/rustc-trace.zip

[gen-xu]

seems to be related #115216

[iacore]

Here's another command that fails: cargo install --git https://github.com/lapce/floem widget-gallery.

Compiling rfd hangs forever

[wesleywiser]

Marking as P-high for now. I can confirm that #114948 fixes the compile time regression/hang.

[wesleywiser]

Closing since the fix in #114948 has shipped to 1.72.1 and 1.73 (current stable).