attempted to read from stolen value: rustc_middle::mir::Body

[aWeinzierl]

Code

cargo-features = ["edition2024"]

[package]
name = "app"
version = "0.1.0"
edition = "2024"

[dependencies]
iced = { git = "https://github.com/iced-rs/iced" }
matrix-sdk = { git = "https://github.com/matrix-org/matrix-rust-sdk" }

#![feature(async_closure)]
use iced::{widget::Container, Task};    
use matrix_sdk::Client;
pub type Message = ();

fn main() -> iced::Result {
    iced::application("", App::update, App::view)
        .run_with(App::new)
}
struct App{}
impl App {
    fn new() -> (Self, Task<Message>) { (Self {}, Task::none()) }
    fn update(&mut self, _: Message) -> Task<Message> {
        let name: String = "".into();
        return Task::perform( async move || -> () {
                let client = Client::builder()
                    .server_name_or_homeserver_url(name)
                    .build()
                    .await;
                ()
            } ()
            , |_|()
        );
    }
    fn view(&self) -> iced::Element<Message> {
        Container::new("").into()
    }
}

Meta

rustc --version --verbose:

rustc 1.83.0-nightly (adaff5368 2024-09-12)
binary: rustc
commit-hash: adaff5368b0c7b328a0320a218751d65ab1bba97
commit-date: 2024-09-12
host: x86_64-pc-windows-msvc
release: 1.83.0-nightly
LLVM version: 19.1.0

Error output

thread 'rustc' panicked at compiler\rustc_mir_transform\src\coroutine\by_move_body.rs:89:48:
attempted to read from stolen value: rustc_middle::mir::Body
stack backtrace:  <see below>
error: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: please make sure that you have updated to the latest nightly

note: please attach the file at `C:\Users\andre\Git\app\rustc-ice-2024-09-13T18_07_22-3376.txt` to your bug report

note: compiler flags: -Z unstable-options --crate-type bin -C embed-bitcode=no -C debuginfo=2 -C incremental=[REDACTED]

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [coroutine_by_move_body_def_id] looking up the coroutine by-move body for `<impl at src/main.rs:11:1: 11:9>::update::{closure#0}::{closure#0}`
#1 [mir_shims] generating MIR shim for `core::ptr::drop_in_place`
#2 [collect_and_partition_mono_items] collect_and_partition_mono_items
end of query stack
error: could not compile `app` (bin "app")

Caused by:
  process didn't exit successfully: `C:\Users\andre\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\bin\rustc.exe --crate-name app --edition=2024 -Z unstable-options src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --diagnostic-width=119 --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --check-cfg cfg(docsrs) --check-cfg "cfg(feature, values())" -C metadata=fad473a2eb870f7b --out-dir C:\Users\andre\Git\app\target\debug\deps -C incremental=C:\Users\andre\Git\app\target\debug\incremental -L dependency=C:\Users\andre\Git\app\target\debug\deps --extern iced=C:\Users\andre\Git\app\target\debug\deps\libiced-2cc65eb3aeb7fd49.rlib --extern matrix_sdk=C:\Users\andre\Git\app\target\debug\deps\libmatrix_sdk-3970ce14a5f243bb.rlib -L native=C:\Users\andre\.cargo\registry\src\index.crates.io-6f17d22bba15001f\windows_x86_64_msvc-0.52.6\lib -L native=C:\Users\andre\Git\app\target\debug\build\blake3-5142136ff73ba3d7\out -L native=C:\Users\andre\Git\app\target\debug\build\blake3-5142136ff73ba3d7\out` (exit code: 101)

Backtrace

   0: std::panicking::begin_panic_handler
             at /rustc/adaff5368b0c7b328a0320a218751d65ab1bba97\library/std\src\panicking.rs:665
   1: core::panicking::panic_fmt
             at /rustc/adaff5368b0c7b328a0320a218751d65ab1bba97\library/core\src\panicking.rs:74
   2: <rustc_monomorphize::polymorphize::MarkUsedGenericParams as rustc_type_ir::visit::TypeVisitor<rustc_middle::ty::context::TyCtxt>>::visit_ty
   3: rustc_mir_transform::coroutine::by_move_body::coroutine_by_move_body_def_id
   4: <rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::depth_limit_error
   5: rustc_ty_utils::ty::self_ty_of_trait_impl_enabling_order_dep_trait_object_hack
   6: <rustc_span::def_id::DefIndex as rustc_query_impl::profiling_support::SpecIntoSelfProfilingString>::spec_to_self_profile_string
   7: rustc_monomorphize::polymorphize::unused_generic_params
   8: <rustc_mir_transform::validate::Validator as rustc_mir_transform::pass_manager::MirPass>::run_pass
   9: <rustc_mir_transform::validate::Validator as rustc_mir_transform::pass_manager::MirPass>::run_pass
  10: <rustc_mir_transform::simplify::SimplifyCfg as rustc_mir_transform::pass_manager::MirPass>::run_pass
  11: rustc_mir_transform::shim::make_shim
  12: <dyn std::io::Write as nu_ansi_term::write::AnyWrite>::write_str
  13: <dyn std::io::Write as nu_ansi_term::write::AnyWrite>::write_str
  14: <dyn std::io::Write as nu_ansi_term::write::AnyWrite>::write_str
  15: rustc_ty_utils::ty::adt_sized_constraint
  16: rustc_query_impl::query_system
  17: <rustc_middle::ty::context::TyCtxt>::instance_mir
  18: rustc_monomorphize::polymorphize::unused_generic_params
  19: rustc_monomorphize::polymorphize::unused_generic_params
  20: rustc_monomorphize::polymorphize::unused_generic_params
  21: rustc_monomorphize::polymorphize::unused_generic_params
  22: rustc_monomorphize::polymorphize::unused_generic_params
  23: rustc_monomorphize::polymorphize::unused_generic_params
  24: rustc_monomorphize::polymorphize::unused_generic_params
  25: rustc_monomorphize::polymorphize::unused_generic_params
  26: rustc_monomorphize::polymorphize::unused_generic_params
  27: rustc_monomorphize::polymorphize::unused_generic_params
  28: rustc_monomorphize::polymorphize::unused_generic_params
  29: rustc_monomorphize::polymorphize::unused_generic_params
  30: rustc_monomorphize::polymorphize::unused_generic_params
  31: rustc_monomorphize::polymorphize::unused_generic_params
  32: rustc_monomorphize::polymorphize::unused_generic_params
  33: rustc_monomorphize::polymorphize::unused_generic_params
  34: rustc_monomorphize::polymorphize::unused_generic_params
  35: rustc_monomorphize::polymorphize::unused_generic_params
  36: rustc_monomorphize::polymorphize::unused_generic_params
  37: rustc_monomorphize::polymorphize::unused_generic_params
  38: rustc_monomorphize::polymorphize::unused_generic_params
  39: rustc_monomorphize::polymorphize::unused_generic_params
  40: rustc_monomorphize::polymorphize::unused_generic_params
  41: rustc_monomorphize::polymorphize::unused_generic_params
  42: rustc_monomorphize::polymorphize::unused_generic_params
  43: rustc_monomorphize::polymorphize::unused_generic_params
  44: rustc_monomorphize::polymorphize::unused_generic_params
  45: rustc_monomorphize::polymorphize::unused_generic_params
  46: rustc_monomorphize::polymorphize::unused_generic_params
  47: rustc_monomorphize::polymorphize::unused_generic_params
  48: rustc_monomorphize::polymorphize::unused_generic_params
  49: rustc_monomorphize::polymorphize::unused_generic_params
  50: rustc_monomorphize::polymorphize::unused_generic_params
  51: rustc_monomorphize::polymorphize::unused_generic_params
  52: rustc_monomorphize::polymorphize::unused_generic_params
  53: rustc_monomorphize::polymorphize::unused_generic_params
  54: rustc_monomorphize::polymorphize::unused_generic_params
  55: rustc_monomorphize::polymorphize::unused_generic_params
  56: rustc_monomorphize::polymorphize::unused_generic_params
  57: rustc_monomorphize::polymorphize::unused_generic_params
  58: rustc_monomorphize::partitioning::collect_and_partition_mono_items
  59: <dyn std::io::Write as nu_ansi_term::write::AnyWrite>::write_str
  60: <dyn std::io::Write as nu_ansi_term::write::AnyWrite>::write_str
  61: rustc_ty_utils::ty::adt_sized_constraint
  62: rustc_query_impl::query_system
  63: <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_ssa::traits::backend::CodegenBackend>::codegen_crate
  64: <rustc_interface::queries::Linker>::codegen_and_build_linker
  65: _rust_alloc_error_handler
  66: _rust_alloc_error_handler
  67: _rust_alloc_error_handler
  68: alloc::boxed::impl$48::call_once
             at /rustc/adaff5368b0c7b328a0320a218751d65ab1bba97\library/alloc\src\boxed.rs:2229
  69: alloc::boxed::impl$48::call_once
             at /rustc/adaff5368b0c7b328a0320a218751d65ab1bba97\library/alloc\src\boxed.rs:2229
  70: std::sys::pal::windows::thread::impl$0::new::thread_start
             at /rustc/adaff5368b0c7b328a0320a218751d65ab1bba97\library/std\src\sys\pal\windows\thread.rs:55
  71: BaseThreadInitThunk
  72: RtlUserThreadStart
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

rustc-ice-2024-09-13T18_10_53-2928.txt

Cargo.toml.txt

Additional note

During minimization the project was in a state in which removing a empty line or a line comment could introduce the internal compiler error.

[kpreid]

Might be the same as #130167.

[aWeinzierl]

The error doesn't happen anymore, tested with rustc 1.83.0-nightly (da88968 2024-09-20)