ICE: incoherent impl of negative auto trait #138149
Description
auto-reduced (treereduce-rust):
//@compile-flags: -Zincremental-verify-ich=yes -Cincremental=<dir> -Cdebuginfo=2 -Clink-dead-code=true -Zvalidate-mir --edition=2024 pub unsafe auto trait DynSend {} macro_rules! impls_dyn_send_neg { ($([$t1: ty $(where $($generics1: tt)*)?])*) => { $(impl$(<$($generics1)*>)? !DynSend for $t1 {})* }; } impls_dyn_send_neg!( [*mut T where T: ?Sized] );original code
original:
use std::alloc::Allocator; #[rustc_on_unimplemented(message = "`{Self}` doesn't implement `DynSend`. \ Add it to `rustc_data_structures::marker` or use `IntoDynSyncSend` if it's already `Send`")] // This is an auto trait for types which can be sent across threads if `sync::is_dyn_thread_safe()` // is true. These types can be wrapped in a `FromDyn` to get a `Send` type. Wrapping a // `Send` type in `IntoDynSyncSend` will create a `DynSend` type. pub unsafe auto trait DynSend {} #[rustc_on_unimplemented(message = "`{Self}` doesn't implement `DynSync`. \ Add it to `rustc_data_structures::marker` or use `IntoDynSyncSend` if it's already `Sync`")] // This is an auto trait for types which can be shared across threads if `sync::is_dyn_thread_safe()` // is true. These types can be wrapped in a `FromDyn` to get a `Sync` type. Wrapping a // `Sync` type in `IntoDynSyncSend` will create a `DynSync` type. pub unsafe auto trait DynSync {} // Same with `Sync` and `Send`. unsafe impl<T: DynSync + ?Sized> DynSend for &T {} macro_rules! impls_dyn_send_neg { ($([$t1: ty $(where $($generics1: tt)*)?])*) => { $(impl$(<$($generics1)*>)? !DynSend for $t1 {})* }; } // Consistent with `std` impls_dyn_send_neg!( [std::env::Args] [std::env::ArgsOs] [*const T where T: ?Sized] [*mut T where T: ?Sized] [std::ptr::NonNull<T> where T: ?Sized] [std::rc::Rc<T, A> where T: ?Sized, A: Allocator] [std::rc::Weak<T, A> where T: ?Sized, A: Allocator] [std::sync::MutexGuard<'_, T> where T: ?Sized] [std::sync::RwLockReadGuard<'_, T> where T: ?Sized] [std::sync::RwLockWriteGuard<'_, T> where T: ?Sized] [std::io::StdoutLock<'_>] [std::io::StderrLock<'_>] ); #[cfg(any(unix, target_os = "hermit", target_os = "wasi", target_os = "solid_asp3"))] // Consistent with `std`, `os_imp::Env` is `!Sync` in these platforms impl !DynSend for std::env::VarsOs {} macro_rules! already_send { ($([$ty: ty])*) => { $(unsafe impl DynSend for $ty where $ty: Send {})* }; } // These structures are already `Send`. already_send!( [std::backtrace::Backtrace][std::io::Stdout][std::io::Stderr][std::io::Error][std::fs::File] [rustc_arena::DroplessArena][crate::memmap::Mmap][crate::profiling::SelfProfiler] [crate::owned_slice::OwnedSlice] ); macro_rules! impl_dyn_send { ($($($attr: meta)* [$ty: ty where $($generics2: tt)*])*) => { $(unsafe impl<$($generics2)*> DynSend for $ty {})* }; } impl_dyn_send!( [std::sync::atomic::AtomicPtr<T> where T] [std::sync::Mutex<T> where T: ?Sized+ DynSend] [std::sync::mpsc::Sender<T> where T: DynSend] [std::sync::Arc<T> where T: ?Sized + DynSync + DynSend] [std::sync::LazyLock<T, F> where T: DynSend, F: DynSend] [std::collections::HashSet<K, S> where K: DynSend, S: DynSend] [std::collections::HashMap<K, V, S> where K: DynSend, V: DynSend, S: DynSend] [std::collections::BTreeMap<K, V, A> where K: DynSend, V: DynSend, A: std::alloc::Allocator + Clone + DynSend] [Vec<T, A> where T: DynSend, A: std::alloc::Allocator + DynSend] [Box<T, A> where T: ?Sized + DynSend, A: std::alloc::Allocator + DynSend] [crate::sync::RwLock<T> where T: DynSend] [crate::tagged_ptr::TaggedRef<'a, P, T> where 'a, P: Sync, T: Send + crate::tagged_ptr::Tag] [rustc_arena::TypedArena<T> where T: DynSend] [indexmap::IndexSet<V, S> where V: DynSend, S: DynSend] [indexmap::IndexMap<K, V, S> where K: DynSend, V: DynSend, S: DynSend] [thin_vec::ThinVec<T> where T: DynSend] [smallvec::SmallVec<A> where A: smallvec::Array + DynSend] ); macro_rules! impls_dyn_sync_neg { ($([$t1: ty $(where $($generics1: tt)*)?])*) => { $(impl$(<$($generics1)*>)? !DynSync for $t1 {})* }; } // Consistent with `std` impls_dyn_sync_neg!( [std::env::Args] [std::env::ArgsOs] [*const T where T: ?Sized] [*mut T where T: ?Sized] [std::cell::Cell<T> where T: ?Sized] [std::cell::RefCell<T> where T: ?Sized] [std::cell::UnsafeCell<T> where T: ?Sized] [std::ptr::NonNull<T> where T: ?Sized] [std::rc::Rc<T, A> where T: ?Sized, A: Allocator] [std::rc::Weak<T, A> where T: ?Sized, A: Allocator] [std::cell::OnceCell<T> where T] [std::sync::mpsc::Receiver<T> where T] [std::sync::mpsc::Sender<T> where T] ); #[cfg(any(unix, target_os = "hermit", target_os = "wasi", target_os = "solid_asp3"))] // Consistent with `std`, `os_imp::Env` is `!Sync` in these platforms impl !DynSync for std::env::VarsOs {} macro_rules! already_sync { ($([$ty: ty])*) => { $(unsafe impl DynSync for $ty where $ty: Sync {})* }; } // These structures are already `Sync`. already_sync!( [std::sync::atomic::AtomicBool][std::sync::atomic::AtomicUsize][std::sync::atomic::AtomicU8] [std::sync::atomic::AtomicU32][std::backtrace::Backtrace][std::io::Error][std::fs::File] [jobserver_crate::Client][crate::memmap::Mmap][crate::profiling::SelfProfiler] [crate::owned_slice::OwnedSlice] ); // Use portable AtomicU64 for targets without native 64-bit atomics #[cfg(target_has_atomic = "64")] already_sync!([std::sync::atomic::AtomicU64]); #[cfg(not(target_has_atomic = "64"))] already_sync!([portable_atomic::AtomicU64]); macro_rules! impl_dyn_sync { ($($($attr: meta)* [$ty: ty where $($generics2: tt)*])*) => { $(unsafe impl<$($generics2)*> DynSync for $ty {})* }; } impl_dyn_sync!( [std::sync::atomic::AtomicPtr<T> where T] [std::sync::OnceLock<T> where T: DynSend + DynSync] [std::sync::Mutex<T> where T: ?Sized + DynSend] [std::sync::Arc<T> where T: ?Sized + DynSync + DynSend] [std::sync::LazyLock<T, F> where T: DynSend + DynSync, F: DynSend] [std::collections::HashSet<K, S> where K: DynSync, S: DynSync] [std::collections::HashMap<K, V, S> where K: DynSync, V: DynSync, S: DynSync] [std::collections::BTreeMap<K, V, A> where K: DynSync, V: DynSync, A: std::alloc::Allocator + Clone + DynSync] [Vec<T, A> where T: DynSync, A: std::alloc::Allocator + DynSync] [Box<T, A> where T: ?Sized + DynSync, A: std::alloc::Allocator + DynSync] [crate::sync::RwLock<T> where T: DynSend + DynSync] [crate::sync::WorkerLocal<T> where T: DynSend] [crate::intern::Interned<'a, T> where 'a, T: DynSync] [crate::tagged_ptr::TaggedRef<'a, P, T> where 'a, P: Sync, T: Sync + crate::tagged_ptr::Tag] [parking_lot::lock_api::Mutex<R, T> where R: DynSync, T: ?Sized + DynSend] [parking_lot::lock_api::RwLock<R, T> where R: DynSync, T: ?Sized + DynSend + DynSync] [indexmap::IndexSet<V, S> where V: DynSync, S: DynSync] [indexmap::IndexMap<K, V, S> where K: DynSync, V: DynSync, S: DynSync] [smallvec::SmallVec<A> where A: smallvec::Array + DynSync] [thin_vec::ThinVec<T> where T: DynSync] ); pub fn assert_dyn_sync<T: ?Sized + DynSync>() {} pub fn assert_dyn_send<T: ?Sized + DynSend>() {} pub fn assert_dyn_send_val<T: ?Sized + DynSend>(_t: &T) {} pub fn assert_dyn_send_sync_val<T: ?Sized + DynSync + DynSend>(_t: &T) {} #[derive(Copy, Clone)] pub struct FromDyn<T>(T); impl<T> FromDyn<T> { #[inline(always)] pub fn from(val: T) -> Self { // Check that `sync::is_dyn_thread_safe()` is true on creation so we can // implement `Send` and `Sync` for this structure when `T` // implements `DynSend` and `DynSync` respectively. assert!(crate::sync::is_dyn_thread_safe()); FromDyn(val) } #[inline(always)] pub fn into_inner(self) -> T { self.0 } } // `FromDyn` is `Send` if `T` is `DynSend`, since it ensures that sync::is_dyn_thread_safe() is true. unsafe impl<T: DynSend> Send for FromDyn<T> {} // `FromDyn` is `Sync` if `T` is `DynSync`, since it ensures that sync::is_dyn_thread_safe() is true. unsafe impl<T: DynSync> Sync for FromDyn<T> {} impl<T> std::ops::Deref for FromDyn<T> { type Target = T; #[inline(always)] fn deref(&self) -> &Self::Target { &self.0 } } // A wrapper to convert a struct that is already a `Send` or `Sync` into // an instance of `DynSend` and `DynSync`, since the compiler cannot infer // it automatically in some cases. (e.g. Box<dyn Send / Sync>) #[derive(Copy, Clone)] pub struct IntoDynSyncSend<T: ?Sized>(pub T); unsafe impl<T: ?Sized + Send> DynSend for IntoDynSyncSend<T> {} unsafe impl<T: ?Sized + Sync> DynSync for IntoDynSyncSend<T> {} impl<T> std::ops::Deref for IntoDynSyncSend<T> { type Target = T; #[inline(always)] fn deref(&self) -> &T { &self.0 } } impl<T> std::ops::DerefMut for IntoDynSyncSend<T> { #[inline(always)] fn deref_mut(&mut self) -> &mut T { &mut self.0 } }Version information
rustc 1.87.0-nightly (91a0e1604 2025-03-07) binary: rustc commit-hash: 91a0e1604f343730022bc903cbf201d8b0a86a71 commit-date: 2025-03-07 host: x86_64-unknown-linux-gnu release: 1.87.0-nightly LLVM version: 20.1.0 Possibly related line of code:
rust/compiler/rustc_hir_analysis/src/check/always_applicable.rs
Lines 121 to 133 in 91a0e16
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc -Zincremental-verify-ich=yes -Cincremental=<dir> -Cdebuginfo=2 -Clink-dead-code=true -Zvalidate-mir --edition=2024
Program output
error[E0658]: auto traits are experimental and possibly buggy --> /tmp/icemaker_global_tempdir.1qSxDNmayuCe/rustc_testrunner_tmpdir_reporting.rOJBIyr9pn9e/mvce.rs:1:1 | 1 | pub unsafe auto trait DynSend {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: see issue #13231 <https://github.com/rust-lang/rust/issues/13231> for more information = help: add `#![feature(auto_traits)]` to the crate attributes to enable = note: this compiler was built on 2025-03-07; consider upgrading it if it is out of date error[E0658]: negative trait bounds are not fully implemented; use marker types for now --> /tmp/icemaker_global_tempdir.1qSxDNmayuCe/rustc_testrunner_tmpdir_reporting.rOJBIyr9pn9e/mvce.rs:5:36 | 5 | $(impl$(<$($generics1)*>)? !DynSend for $t1 {})* | ^^^^^^^^ ... 9 | / impls_dyn_send_neg!( ... | 22 | | ); | |_- in this macro invocation | = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information = help: add `#![feature(negative_impls)]` to the crate attributes to enable = note: this compiler was built on 2025-03-07; consider upgrading it if it is out of date = note: this error originates in the macro `impls_dyn_send_neg` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0601]: `main` function not found in crate `mvce` --> /tmp/icemaker_global_tempdir.1qSxDNmayuCe/rustc_testrunner_tmpdir_reporting.rOJBIyr9pn9e/mvce.rs:22:3 | 22 | ); | ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.1qSxDNmayuCe/rustc_testrunner_tmpdir_reporting.rOJBIyr9pn9e/mvce.rs` error: internal compiler error: compiler/rustc_hir_analysis/src/check/always_applicable.rs:127:17: incoherent impl of negative auto trait --> /tmp/icemaker_global_tempdir.1qSxDNmayuCe/rustc_testrunner_tmpdir_reporting.rOJBIyr9pn9e/mvce.rs:5:11 | 5 | $(impl$(<$($generics1)*>)? !DynSend for $t1 {})* | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ... 9 | / impls_dyn_send_neg!( ... | 22 | | ); | |_- in this macro invocation | = note: this error: internal compiler error originates in the macro `impls_dyn_send_neg` (in Nightly builds, run with -Z macro-backtrace for more info) thread 'rustc' panicked at compiler/rustc_hir_analysis/src/check/always_applicable.rs:127:17: Box<dyn Any> stack backtrace: 0: 0x79279ffb9cd4 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h56c41017d4c018c9 1: 0x7927a0805aa2 - core::fmt::write::h44fb6b51ecd37273 2: 0x7927a1a88651 - std::io::Write::write_fmt::h5177286eaabb4718 3: 0x79279ffb9b32 - std::sys::backtrace::BacktraceLock::print::h7224e6db0c6003ab 4: 0x79279ffbc412 - std::panicking::default_hook::{{closure}}::hd57ffe6704b518f0 5: 0x79279ffbc004 - std::panicking::default_hook::hd67996f0af20ab10 6: 0x79279f113be7 - std[19e82b1a4c46fd01]::panicking::update_hook::<alloc[c1750e1d92c179af]::boxed::Box<rustc_driver_impl[b51e5c2563a01b77]::install_ice_hook::{closure#1}>>::{closure#0} 7: 0x79279ffbcc83 - std::panicking::rust_panic_with_hook::h28cd824a2557f292 8: 0x79279f150ae1 - std[19e82b1a4c46fd01]::panicking::begin_panic::<rustc_errors[e194483261a0ac90]::ExplicitBug>::{closure#0} 9: 0x79279f144ef6 - std[19e82b1a4c46fd01]::sys::backtrace::__rust_end_short_backtrace::<std[19e82b1a4c46fd01]::panicking::begin_panic<rustc_errors[e194483261a0ac90]::ExplicitBug>::{closure#0}, !> 10: 0x79279f141879 - std[19e82b1a4c46fd01]::panicking::begin_panic::<rustc_errors[e194483261a0ac90]::ExplicitBug> 11: 0x79279f15a601 - <rustc_errors[e194483261a0ac90]::diagnostic::BugAbort as rustc_errors[e194483261a0ac90]::diagnostic::EmissionGuarantee>::emit_producing_guarantee 12: 0x79279f6a92ac - <rustc_errors[e194483261a0ac90]::DiagCtxtHandle>::span_bug::<rustc_span[e865731220afcfda]::span_encoding::Span, alloc[c1750e1d92c179af]::string::String> 13: 0x79279f72fdca - rustc_middle[3b30e948e3f2f3ce]::util::bug::opt_span_bug_fmt::<rustc_span[e865731220afcfda]::span_encoding::Span>::{closure#0} 14: 0x79279f7178da - rustc_middle[3b30e948e3f2f3ce]::ty::context::tls::with_opt::<rustc_middle[3b30e948e3f2f3ce]::util::bug::opt_span_bug_fmt<rustc_span[e865731220afcfda]::span_encoding::Span>::{closure#0}, !>::{closure#0} 15: 0x79279f71774b - rustc_middle[3b30e948e3f2f3ce]::ty::context::tls::with_context_opt::<rustc_middle[3b30e948e3f2f3ce]::ty::context::tls::with_opt<rustc_middle[3b30e948e3f2f3ce]::util::bug::opt_span_bug_fmt<rustc_span[e865731220afcfda]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !> 16: 0x79279e046fe7 - rustc_middle[3b30e948e3f2f3ce]::util::bug::span_bug_fmt::<rustc_span[e865731220afcfda]::span_encoding::Span> 17: 0x7927a0ddac6e - rustc_hir_analysis[a8d0531b1c136f6]::coherence::coherent_trait 18: 0x7927a0dd7a4b - rustc_query_impl[12d212d82618db]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[12d212d82618db]::query_impl::coherent_trait::dynamic_query::{closure#2}::{closure#0}, rustc_middle[3b30e948e3f2f3ce]::query::erase::Erased<[u8; 1usize]>> 19: 0x7927a0c810d7 - rustc_query_system[aaed86abacd7d44]::query::plumbing::try_execute_query::<rustc_query_impl[12d212d82618db]::DynamicConfig<rustc_query_system[aaed86abacd7d44]::query::caches::DefIdCache<rustc_middle[3b30e948e3f2f3ce]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[12d212d82618db]::plumbing::QueryCtxt, true> 20: 0x7927a0fb4dcf - rustc_query_impl[12d212d82618db]::query_impl::coherent_trait::get_query_incr::__rust_end_short_backtrace 21: 0x7927a11112bb - rustc_hir_analysis[a8d0531b1c136f6]::check::check::check_item_type 22: 0x7927a0e9fae5 - rustc_hir_analysis[a8d0531b1c136f6]::check::wfcheck::check_well_formed 23: 0x7927a0e9e1d1 - rustc_query_impl[12d212d82618db]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[12d212d82618db]::query_impl::check_well_formed::dynamic_query::{closure#2}::{closure#0}, rustc_middle[3b30e948e3f2f3ce]::query::erase::Erased<[u8; 1usize]>> 24: 0x7927a0c859a1 - rustc_query_system[aaed86abacd7d44]::query::plumbing::try_execute_query::<rustc_query_impl[12d212d82618db]::DynamicConfig<rustc_data_structures[bfe103198732ba63]::vec_cache::VecCache<rustc_span[e865731220afcfda]::def_id::LocalDefId, rustc_middle[3b30e948e3f2f3ce]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[aaed86abacd7d44]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[12d212d82618db]::plumbing::QueryCtxt, true> 25: 0x7927a0c8eeac - rustc_query_impl[12d212d82618db]::query_impl::check_well_formed::get_query_incr::__rust_end_short_backtrace 26: 0x7927a0e9af5d - rustc_hir_analysis[a8d0531b1c136f6]::check::wfcheck::check_mod_type_wf 27: 0x7927a0e9ad5f - rustc_query_impl[12d212d82618db]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[12d212d82618db]::query_impl::check_mod_type_wf::dynamic_query::{closure#2}::{closure#0}, rustc_middle[3b30e948e3f2f3ce]::query::erase::Erased<[u8; 1usize]>> 28: 0x7927a17c88e0 - rustc_query_system[aaed86abacd7d44]::query::plumbing::try_execute_query::<rustc_query_impl[12d212d82618db]::DynamicConfig<rustc_query_system[aaed86abacd7d44]::query::caches::DefaultCache<rustc_span[e865731220afcfda]::def_id::LocalModDefId, rustc_middle[3b30e948e3f2f3ce]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[12d212d82618db]::plumbing::QueryCtxt, true> 29: 0x7927a17c933b - rustc_query_impl[12d212d82618db]::query_impl::check_mod_type_wf::get_query_incr::__rust_end_short_backtrace 30: 0x7927a0b4ff4f - rustc_hir_analysis[a8d0531b1c136f6]::check_crate 31: 0x7927a0c87cb4 - rustc_interface[2a0eb8606666de35]::passes::run_required_analyses 32: 0x7927a186c4ba - rustc_interface[2a0eb8606666de35]::passes::analysis 33: 0x7927a186c499 - rustc_query_impl[12d212d82618db]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[12d212d82618db]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[3b30e948e3f2f3ce]::query::erase::Erased<[u8; 0usize]>> 34: 0x7927a1867d6a - rustc_query_system[aaed86abacd7d44]::query::plumbing::try_execute_query::<rustc_query_impl[12d212d82618db]::DynamicConfig<rustc_query_system[aaed86abacd7d44]::query::caches::SingleCache<rustc_middle[3b30e948e3f2f3ce]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[12d212d82618db]::plumbing::QueryCtxt, true> 35: 0x7927a1867876 - rustc_query_impl[12d212d82618db]::query_impl::analysis::get_query_incr::__rust_end_short_backtrace 36: 0x7927a196a27d - rustc_interface[2a0eb8606666de35]::passes::create_and_enter_global_ctxt::<core[6618104b838f8a53]::option::Option<rustc_interface[2a0eb8606666de35]::queries::Linker>, rustc_driver_impl[b51e5c2563a01b77]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0} 37: 0x7927a195ae0f - rustc_interface[2a0eb8606666de35]::interface::run_compiler::<(), rustc_driver_impl[b51e5c2563a01b77]::run_compiler::{closure#0}>::{closure#1} 38: 0x7927a178f6c8 - std[19e82b1a4c46fd01]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[2a0eb8606666de35]::util::run_in_thread_with_globals<rustc_interface[2a0eb8606666de35]::util::run_in_thread_pool_with_globals<rustc_interface[2a0eb8606666de35]::interface::run_compiler<(), rustc_driver_impl[b51e5c2563a01b77]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> 39: 0x7927a178ffb4 - <<std[19e82b1a4c46fd01]::thread::Builder>::spawn_unchecked_<rustc_interface[2a0eb8606666de35]::util::run_in_thread_with_globals<rustc_interface[2a0eb8606666de35]::util::run_in_thread_pool_with_globals<rustc_interface[2a0eb8606666de35]::interface::run_compiler<(), rustc_driver_impl[b51e5c2563a01b77]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[6618104b838f8a53]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} 40: 0x7927a17913b7 - std::sys::pal::unix::thread::Thread::new::thread_start::h90408beae1bbc578 41: 0x79279b8a370a - <unknown> 42: 0x79279b927aac - <unknown> 43: 0x0 - <unknown> 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: rustc 1.87.0-nightly (91a0e1604 2025-03-07) running on x86_64-unknown-linux-gnu note: compiler flags: -Z incremental-verify-ich=yes -C incremental=[REDACTED] -C debuginfo=2 -C link-dead-code=true -Z validate-mir query stack during panic: #0 [coherent_trait] coherence checking all impls of trait `DynSend` #1 [check_well_formed] checking that `<impl at /tmp/icemaker_global_tempdir.1qSxDNmayuCe/rustc_testrunner_tmpdir_reporting.rOJBIyr9pn9e/mvce.rs:5:11: 5:52>` is well-formed #2 [check_mod_type_wf] checking that types are well-formed in top-level module #3 [analysis] running analysis passes on this crate end of query stack error: aborting due to 4 previous errors Some errors have detailed explanations: E0601, E0658. For more information about an error, try `rustc --explain E0601`.