Closed
Description
auto-reduced (treereduce-rust):
#![feature(non_lifetime_binders)]
trait Trait<T: ?Sized> {}
fn produce() -> impl for<T> Trait<(), Assoc = impl Trait<T>> {
16
}
original:
// check-pass
#![feature(non_lifetime_binders)]
//~^ WARN the feature `non_lifetime_binders` is incomplete
trait Trait<T: ?Sized> {}
impl<T: ?Sized> Trait<T> for i32 {}
fn produce() -> impl for<T> Trait<(), Assoc = impl Trait<T>> {
16
}
fn main() {
let _ = produce();
}
Version information
rustc 1.78.0-nightly (f8131a48a 2024-02-21)
binary: rustc
commit-hash: f8131a48a46ac3bc8a3d0fe0477055b132cffdc3
commit-date: 2024-02-21
host: x86_64-unknown-linux-gnu
release: 1.78.0-nightly
LLVM version: 18.1.0
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc
Program output
warning: the feature `non_lifetime_binders` is incomplete and may not be safe to use and/or cause compiler crashes
--> /tmp/icemaker_global_tempdir.0emJgmZ88e4H/rustc_testrunner_tmpdir_reporting.nzVpYvTIjOr1/mvce.rs:1:12
|
1 | #![feature(non_lifetime_binders)]
| ^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information
= note: `#[warn(incomplete_features)]` on by default
error[E0601]: `main` function not found in crate `mvce`
--> /tmp/icemaker_global_tempdir.0emJgmZ88e4H/rustc_testrunner_tmpdir_reporting.nzVpYvTIjOr1/mvce.rs:7:2
|
7 | }
| ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.0emJgmZ88e4H/rustc_testrunner_tmpdir_reporting.nzVpYvTIjOr1/mvce.rs`
error[E0220]: associated type `Assoc` not found for `Trait`
--> /tmp/icemaker_global_tempdir.0emJgmZ88e4H/rustc_testrunner_tmpdir_reporting.nzVpYvTIjOr1/mvce.rs:5:39
|
5 | fn produce() -> impl for<T> Trait<(), Assoc = impl Trait<T>> {
| ^^^^^ associated type `Assoc` not found
error: internal compiler error: could not resolve DefId(0:6 ~ mvce[8c01]::produce::T)
--> /tmp/icemaker_global_tempdir.0emJgmZ88e4H/rustc_testrunner_tmpdir_reporting.nzVpYvTIjOr1/mvce.rs:5:58
|
5 | fn produce() -> impl for<T> Trait<(), Assoc = impl Trait<T>> {
| ^
thread 'rustc' panicked at compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs:1470:14:
Box<dyn Any>
stack backtrace:
0: 0x7ffba3b8caf6 - std::backtrace_rs::backtrace::libunwind::trace::hbec2edc838b433e2
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
1: 0x7ffba3b8caf6 - std::backtrace_rs::backtrace::trace_unsynchronized::h88c30257ee0dd166
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7ffba3b8caf6 - std::sys_common::backtrace::_print_fmt::h9176654d509e3088
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/sys_common/backtrace.rs:68:5
3: 0x7ffba3b8caf6 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h671feaee1776bf19
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7ffba3bdda7c - core::fmt::rt::Argument::fmt::h59605c83ae32d935
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/core/src/fmt/rt.rs:142:9
5: 0x7ffba3bdda7c - core::fmt::write::hf7af8dfcfd20db5b
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/core/src/fmt/mod.rs:1120:17
6: 0x7ffba3b814bf - std::io::Write::write_fmt::h92a5dbf489025e71
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/io/mod.rs:1846:15
7: 0x7ffba3b8c8a4 - std::sys_common::backtrace::_print::h00080302d23998ae
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7ffba3b8c8a4 - std::sys_common::backtrace::print::h6b23124445400245
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7ffba3b8f5eb - std::panicking::default_hook::{{closure}}::hd67b2f9d36675a28
10: 0x7ffba3b8f339 - std::panicking::default_hook::h10a39ef11c714e42
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/panicking.rs:292:9
11: 0x7ffba6a7a94c - std[5a8e7f94216a9138]::panicking::update_hook::<alloc[e14ab1f516d287ab]::boxed::Box<rustc_driver_impl[e279e4f1fedd9109]::install_ice_hook::{closure#0}>>::{closure#0}
12: 0x7ffba3b8fd50 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h37ba37dc48823c1d
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/alloc/src/boxed.rs:2030:9
13: 0x7ffba3b8fd50 - std::panicking::rust_panic_with_hook::he3e3bc7c345bf54b
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/panicking.rs:786:13
14: 0x7ffba6aa7524 - std[5a8e7f94216a9138]::panicking::begin_panic::<rustc_errors[34364e5c712fab73]::ExplicitBug>::{closure#0}
15: 0x7ffba6aa4176 - std[5a8e7f94216a9138]::sys_common::backtrace::__rust_end_short_backtrace::<std[5a8e7f94216a9138]::panicking::begin_panic<rustc_errors[34364e5c712fab73]::ExplicitBug>::{closure#0}, !>
16: 0x7ffba6a9f936 - std[5a8e7f94216a9138]::panicking::begin_panic::<rustc_errors[34364e5c712fab73]::ExplicitBug>
17: 0x7ffba5417631 - <rustc_errors[34364e5c712fab73]::diagnostic::BugAbort as rustc_errors[34364e5c712fab73]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
18: 0x7ffba871e027 - <rustc_hir_analysis[71d4294717f7f2b7]::collect::resolve_bound_vars::BoundVarContext>::resolve_type_ref
19: 0x7ffba51b7b52 - rustc_hir[170b9793d794ea06]::intravisit::walk_qpath::<rustc_hir_analysis[71d4294717f7f2b7]::collect::resolve_bound_vars::BoundVarContext>
20: 0x7ffba51bea74 - <rustc_hir_analysis[71d4294717f7f2b7]::collect::resolve_bound_vars::BoundVarContext as rustc_hir[170b9793d794ea06]::intravisit::Visitor>::visit_path
21: 0x7ffba858faef - <rustc_hir_analysis[71d4294717f7f2b7]::collect::resolve_bound_vars::BoundVarContext>::visit_poly_trait_ref_inner
22: 0x7ffba871c4ae - rustc_hir[170b9793d794ea06]::intravisit::walk_item::<rustc_hir_analysis[71d4294717f7f2b7]::collect::resolve_bound_vars::BoundVarContext>
23: 0x7ffba871b5b8 - <rustc_hir_analysis[71d4294717f7f2b7]::collect::resolve_bound_vars::BoundVarContext as rustc_hir[170b9793d794ea06]::intravisit::Visitor>::visit_item
24: 0x7ffba858cb8a - rustc_hir_analysis[71d4294717f7f2b7]::collect::resolve_bound_vars::resolve_bound_vars
25: 0x7ffba858c731 - rustc_query_impl[9d4c51777e2bb749]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[9d4c51777e2bb749]::query_impl::resolve_bound_vars::dynamic_query::{closure#2}::{closure#0}, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 8usize]>>
26: 0x7ffba80f6be3 - rustc_query_system[9b2ccfe41ae3bb1b]::query::plumbing::try_execute_query::<rustc_query_impl[9d4c51777e2bb749]::DynamicConfig<rustc_query_system[9b2ccfe41ae3bb1b]::query::caches::VecCache<rustc_hir[170b9793d794ea06]::hir_id::OwnerId, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[9d4c51777e2bb749]::plumbing::QueryCtxt, false>
27: 0x7ffba80f670c - rustc_query_impl[9d4c51777e2bb749]::query_impl::resolve_bound_vars::get_query_non_incr::__rust_end_short_backtrace
28: 0x7ffba80f62a6 - rustc_query_impl[9d4c51777e2bb749]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[9d4c51777e2bb749]::query_impl::named_variable_map::dynamic_query::{closure#2}::{closure#0}, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 8usize]>>
29: 0x7ffba80f6be3 - rustc_query_system[9b2ccfe41ae3bb1b]::query::plumbing::try_execute_query::<rustc_query_impl[9d4c51777e2bb749]::DynamicConfig<rustc_query_system[9b2ccfe41ae3bb1b]::query::caches::VecCache<rustc_hir[170b9793d794ea06]::hir_id::OwnerId, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[9d4c51777e2bb749]::plumbing::QueryCtxt, false>
30: 0x7ffba80f664c - rustc_query_impl[9d4c51777e2bb749]::query_impl::named_variable_map::get_query_non_incr::__rust_end_short_backtrace
31: 0x7ffba5e39cd2 - <dyn rustc_hir_analysis[71d4294717f7f2b7]::astconv::AstConv>::res_to_ty
32: 0x7ffba801b7c0 - <dyn rustc_hir_analysis[71d4294717f7f2b7]::astconv::AstConv>::ast_ty_to_ty_inner
33: 0x7ffba8944b44 - <dyn rustc_hir_analysis[71d4294717f7f2b7]::astconv::AstConv>::create_args_for_ast_path
34: 0x7ffba8a71b10 - <dyn rustc_hir_analysis[71d4294717f7f2b7]::astconv::AstConv>::instantiate_poly_trait_ref
35: 0x7ffba8a6eafc - <dyn rustc_hir_analysis[71d4294717f7f2b7]::astconv::AstConv>::compute_bounds
36: 0x7ffba8940fa2 - rustc_hir_analysis[71d4294717f7f2b7]::collect::item_bounds::opaque_type_bounds
37: 0x7ffba893f8f1 - rustc_hir_analysis[71d4294717f7f2b7]::collect::item_bounds::explicit_item_bounds
38: 0x7ffba893ea67 - rustc_query_impl[9d4c51777e2bb749]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[9d4c51777e2bb749]::query_impl::explicit_item_bounds::dynamic_query::{closure#2}::{closure#0}, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 16usize]>>
39: 0x7ffba893ea31 - <rustc_query_impl[9d4c51777e2bb749]::query_impl::explicit_item_bounds::dynamic_query::{closure#2} as core[85b4fd477ce5bb21]::ops::function::FnOnce<(rustc_middle[446dd094ad85939e]::ty::context::TyCtxt, rustc_span[adb133ac03280fc1]::def_id::DefId)>>::call_once
40: 0x7ffba8158a40 - rustc_query_system[9b2ccfe41ae3bb1b]::query::plumbing::try_execute_query::<rustc_query_impl[9d4c51777e2bb749]::DynamicConfig<rustc_query_system[9b2ccfe41ae3bb1b]::query::caches::DefIdCache<rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[9d4c51777e2bb749]::plumbing::QueryCtxt, false>
41: 0x7ffba8157121 - rustc_query_impl[9d4c51777e2bb749]::query_impl::explicit_item_bounds::get_query_non_incr::__rust_end_short_backtrace
42: 0x7ffba81f4c6a - <rustc_hir_analysis[71d4294717f7f2b7]::collect::CollectItemTypesVisitor as rustc_hir[170b9793d794ea06]::intravisit::Visitor>::visit_item
43: 0x7ffba81f3176 - rustc_hir_analysis[71d4294717f7f2b7]::collect::collect_mod_item_types
44: 0x7ffba81f3109 - rustc_query_impl[9d4c51777e2bb749]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[9d4c51777e2bb749]::query_impl::collect_mod_item_types::dynamic_query::{closure#2}::{closure#0}, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 0usize]>>
45: 0x7ffba8a2b2ed - rustc_query_system[9b2ccfe41ae3bb1b]::query::plumbing::try_execute_query::<rustc_query_impl[9d4c51777e2bb749]::DynamicConfig<rustc_query_system[9b2ccfe41ae3bb1b]::query::caches::DefaultCache<rustc_span[adb133ac03280fc1]::def_id::LocalModDefId, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[9d4c51777e2bb749]::plumbing::QueryCtxt, false>
46: 0x7ffba8a2ae17 - rustc_query_impl[9d4c51777e2bb749]::query_impl::collect_mod_item_types::get_query_non_incr::__rust_end_short_backtrace
47: 0x7ffba87ad4e8 - rustc_hir_analysis[71d4294717f7f2b7]::check_crate
48: 0x7ffba88a2dd3 - rustc_interface[7ca501d7f8f3a34f]::passes::analysis
49: 0x7ffba88a2a29 - rustc_query_impl[9d4c51777e2bb749]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[9d4c51777e2bb749]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 1usize]>>
50: 0x7ffba8b3d4a5 - rustc_query_system[9b2ccfe41ae3bb1b]::query::plumbing::try_execute_query::<rustc_query_impl[9d4c51777e2bb749]::DynamicConfig<rustc_query_system[9b2ccfe41ae3bb1b]::query::caches::SingleCache<rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[9d4c51777e2bb749]::plumbing::QueryCtxt, false>
51: 0x7ffba8b3d209 - rustc_query_impl[9d4c51777e2bb749]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
52: 0x7ffba8b4c719 - rustc_interface[7ca501d7f8f3a34f]::interface::run_compiler::<core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>, rustc_driver_impl[e279e4f1fedd9109]::run_compiler::{closure#0}>::{closure#0}
53: 0x7ffba8dbe705 - std[5a8e7f94216a9138]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[7ca501d7f8f3a34f]::util::run_in_thread_with_globals<rustc_interface[7ca501d7f8f3a34f]::util::run_in_thread_pool_with_globals<rustc_interface[7ca501d7f8f3a34f]::interface::run_compiler<core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>, rustc_driver_impl[e279e4f1fedd9109]::run_compiler::{closure#0}>::{closure#0}, core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>>::{closure#0}, core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>>
54: 0x7ffba8dbe532 - <<std[5a8e7f94216a9138]::thread::Builder>::spawn_unchecked_<rustc_interface[7ca501d7f8f3a34f]::util::run_in_thread_with_globals<rustc_interface[7ca501d7f8f3a34f]::util::run_in_thread_pool_with_globals<rustc_interface[7ca501d7f8f3a34f]::interface::run_compiler<core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>, rustc_driver_impl[e279e4f1fedd9109]::run_compiler::{closure#0}>::{closure#0}, core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>>::{closure#0}, core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>>::{closure#1} as core[85b4fd477ce5bb21]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
55: 0x7ffba3b99725 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h1bff3efb61c3fa6b
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/alloc/src/boxed.rs:2016:9
56: 0x7ffba3b99725 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h83141cf549dced8a
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/alloc/src/boxed.rs:2016:9
57: 0x7ffba3b99725 - std::sys::pal::unix::thread::Thread::new::thread_start::hbe9287fdd7c325bc
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/sys/pal/unix/thread.rs:108:17
58: 0x7ffba39819eb - <unknown>
59: 0x7ffba3a057cc - <unknown>
60: 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: rustc 1.78.0-nightly (f8131a48a 2024-02-21) running on x86_64-unknown-linux-gnu
query stack during panic:
#0 [resolve_bound_vars] resolving lifetimes
#1 [named_variable_map] looking up a named region
#2 [explicit_item_bounds] finding item bounds for `produce::{opaque#0}::{opaque#0}`
#3 [collect_mod_item_types] collecting item types in top-level module
#4 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 3 previous errors; 1 warning emitted
Some errors have detailed explanations: E0220, E0601.
For more information about an error, try `rustc --explain E0220`.