Calling a closure in a struct field causes a panic

[coord-e]

9e92551

struct S<F> {
 f: F,
}

fn main() {
 let s = S {
 f: || {},
 };
 (s.f)();
}

thread 'rustc' panicked at src/rty/subtyping.rs:117:18:
inconsistent types: got=(), expected=(own (),
)
stack backtrace:
 0: rust_begin_unwind
 at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/panicking.rs:645:5
 1: core::panicking::panic_fmt
 at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/core/src/panicking.rs:72:14
 2: <C as thrust::rty::subtyping::Subtyping>::relate_sub_type
 at ./src/rty/subtyping.rs:117:18
 3: <C as thrust::rty::subtyping::Subtyping>::relate_sub_refined_type
 at ./src/rty/subtyping.rs:137:27
 4: <C as thrust::rty::subtyping::Subtyping>::relate_sub_type
 at ./src/rty/subtyping.rs:111:30
 5: thrust::rty::subtyping::relate_sub_closed_type
 at ./src/rty/subtyping.rs:168:5
 6: thrust::analyze::local_def::Analyzer::assert_entry
 at ./src/analyze/local_def.rs:762:23
 7: thrust::analyze::local_def::Analyzer::run
 at ./src/analyze/local_def.rs:797:9
 8: thrust::analyze::crate_::Analyzer::analyze_local_defs
 at ./src/analyze/crate_.rs:135:13
 9: thrust::analyze::crate_::Analyzer::run
 at ./src/analyze/crate_.rs:240:9
 10: <thrust_rustc::CompilerCalls as rustc_driver_impl::Callbacks>::after_analysis::{{closure}}
 at ./src/main.rs:54:13
 11: rustc_middle::ty::context::GlobalCtxt::enter::{{closure}}
 at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/compiler/rustc_middle/src/ty/context.rs:649:37
 12: rustc_middle::ty::context::tls::enter_context::{{closure}}
 at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/compiler/rustc_middle/src/ty/context/tls.rs:82:9
 13: std::thread::local::LocalKey<T>::try_with
 at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/thread/local.rs:284:16
 14: std::thread::local::LocalKey<T>::with
 at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/thread/local.rs:260:9
 15: rustc_middle::ty::context::tls::enter_context
 at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/compiler/rustc_middle/src/ty/context/tls.rs:79:9
 16: rustc_middle::ty::context::GlobalCtxt::enter
 at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/compiler/rustc_middle/src/ty/context.rs:649:9
 17: rustc_interface::queries::QueryResult<&rustc_middle::ty::context::GlobalCtxt>::enter
 at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/compiler/rustc_interface/src/queries.rs:71:9
 18: <thrust_rustc::CompilerCalls as rustc_driver_impl::Callbacks>::after_analysis
 at ./src/main.rs:51:9
 19: rustc_interface::interface::run_compiler::<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.