Closed
Description
Code
#![feature(type_alias_impl_trait)]
pub type Tait = impl Iterator<Item = (&'db Key, impl Iterator)>;
pub fn main() {}Meta
rustc --version --verbose:
rustc 1.74.0-nightly (3223b0b5e 2023-09-20)
binary: rustc
commit-hash: 3223b0b5e8dadda3f76c3fd1a8d6c5addc09599e
commit-date: 2023-09-20
host: x86_64-unknown-linux-gnu
release: 1.74.0-nightly
LLVM version: 17.0.0
Error output
--> 76763E5DC6AE6ABA23B770362FAE63C109414F5F9F4688E091EC3407A9B9CB1E.rs:3:40
|
3 | pub type Tait = impl Iterator<Item = (&'db Key, impl Iterator)>;
| ^^^ undeclared lifetime
|
= note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html
help: consider making the bound lifetime-generic with a new `'db` lifetime
|
3 | pub type Tait = impl for<'db> Iterator<Item = (&'db Key, impl Iterator)>;
| ++++++++
help: consider introducing lifetime `'db` here
|
3 | pub type Tait<'db> = impl Iterator<Item = (&'db Key, impl Iterator)>;
| +++++
error[E0412]: cannot find type `Key` in this scope
--> 76763E5DC6AE6ABA23B770362FAE63C109414F5F9F4688E091EC3407A9B9CB1E.rs:3:44
|
3 | pub type Tait = impl Iterator<Item = (&'db Key, impl Iterator)>;
| ^^^ not found in this scope
|
help: consider importing this struct
|
3 + use std::thread::local_impl::Key;
|
error: unconstrained opaque type
--> 76763E5DC6AE6ABA23B770362FAE63C109414F5F9F4688E091EC3407A9B9CB1E.rs:3:17
|
3 | pub type Tait = impl Iterator<Item = (&'db Key, impl Iterator)>;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `Tait` must be used in combination with a concrete type within the same module
Backtrace
thread 'rustc' panicked at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/compiler/rustc_errors/src/lib.rs:1651:9:
Box<dyn Any>
stack backtrace:
0: 0x7f459af6402c - std::backtrace_rs::backtrace::libunwind::trace::h29c8374995c7d415
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7f459af6402c - std::backtrace_rs::backtrace::trace_unsynchronized::h16cdf57e7d1bb070
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f459af6402c - std::sys_common::backtrace::_print_fmt::hbfb4f22585dcb2fd
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/std/src/sys_common/backtrace.rs:67:5
3: 0x7f459af6402c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb0e43dc4856f6e03
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7f459afc9e1c - core::fmt::rt::Argument::fmt::h82e137948f0d7ee4
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/core/src/fmt/rt.rs:138:9
5: 0x7f459afc9e1c - core::fmt::write::h8b9ac4f4c7374e69
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/core/src/fmt/mod.rs:1114:21
6: 0x7f459af56dae - std::io::Write::write_fmt::h9ce93f75df8e70bc
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/std/src/io/mod.rs:1714:15
7: 0x7f459af63e14 - std::sys_common::backtrace::_print::h954477bb2c14503b
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7f459af63e14 - std::sys_common::backtrace::print::h38fd536905d677e7
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7f459af66d33 - std::panicking::default_hook::{{closure}}::h0d512547687cad13
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/std/src/panicking.rs:272:22
10: 0x7f459af66a54 - std::panicking::default_hook::h3c758d5c634aa6e1
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/std/src/panicking.rs:292:9
11: 0x7f459e141d6f - std[423b84e37edbea9d]::panicking::update_hook::<alloc[4c1b9f1e7fd4ece9]::boxed::Box<rustc_driver_impl[5065b449a99b292a]::install_ice_hook::{closure#0}>>::{closure#0}
12: 0x7f459af67561 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hc1529ee1ff5c0ed4
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/alloc/src/boxed.rs:2021:9
13: 0x7f459af67561 - std::panicking::rust_panic_with_hook::ha8fa8090a7e1cf35
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/std/src/panicking.rs:735:13
14: 0x7f459e72c824 - std[423b84e37edbea9d]::panicking::begin_panic::<rustc_errors[753e7a578930e2a3]::ExplicitBug>::{closure#0}
15: 0x7f459e727906 - std[423b84e37edbea9d]::sys_common::backtrace::__rust_end_short_backtrace::<std[423b84e37edbea9d]::panicking::begin_panic<rustc_errors[753e7a578930e2a3]::ExplicitBug>::{closure#0}, !>
16: 0x7f459e638ea6 - std[423b84e37edbea9d]::panicking::begin_panic::<rustc_errors[753e7a578930e2a3]::ExplicitBug>
17: 0x7f459e68bc44 - <rustc_errors[753e7a578930e2a3]::HandlerInner>::bug::<alloc[4c1b9f1e7fd4ece9]::string::String>
18: 0x7f459e68bb06 - <rustc_errors[753e7a578930e2a3]::Handler>::bug::<alloc[4c1b9f1e7fd4ece9]::string::String>
19: 0x7f459e64a024 - rustc_middle[7532cecbef1af146]::util::bug::opt_span_bug_fmt::<rustc_span[52113c30dfc0425a]::span_encoding::Span>::{closure#0}
20: 0x7f459e64945a - rustc_middle[7532cecbef1af146]::ty::context::tls::with_opt::<rustc_middle[7532cecbef1af146]::util::bug::opt_span_bug_fmt<rustc_span[52113c30dfc0425a]::span_encoding::Span>::{closure#0}, !>::{closure#0}
21: 0x7f459e649428 - rustc_middle[7532cecbef1af146]::ty::context::tls::with_context_opt::<rustc_middle[7532cecbef1af146]::ty::context::tls::with_opt<rustc_middle[7532cecbef1af146]::util::bug::opt_span_bug_fmt<rustc_span[52113c30dfc0425a]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
22: 0x7f459c7cb9a0 - rustc_middle[7532cecbef1af146]::util::bug::bug_fmt
23: 0x7f459c65c3b6 - <rustc_middle[7532cecbef1af146]::ty::context::TyCtxt>::item_name
24: 0x7f459e244c09 - rustc_hir_analysis[417a0e0ce74bdc30]::collect::type_of::opaque::find_opaque_ty_constraints_for_tait
25: 0x7f459d775e11 - rustc_query_impl[4050e2da7ab96027]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[4050e2da7ab96027]::query_impl::type_of_opaque::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7532cecbef1af146]::query::erase::Erased<[u8; 8usize]>>
26: 0x7f459d775df1 - <rustc_query_impl[4050e2da7ab96027]::query_impl::type_of_opaque::dynamic_query::{closure#2} as core[4ff1a1b12c81ae0a]::ops::function::FnOnce<(rustc_middle[7532cecbef1af146]::ty::context::TyCtxt, rustc_span[52113c30dfc0425a]::def_id::DefId)>>::call_once
27: 0x7f459c2573f0 - rustc_query_system[f4eb094e69159de6]::query::plumbing::try_execute_query::<rustc_query_impl[4050e2da7ab96027]::DynamicConfig<rustc_query_system[f4eb094e69159de6]::query::caches::DefaultCache<rustc_span[52113c30dfc0425a]::def_id::DefId, rustc_middle[7532cecbef1af146]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[4050e2da7ab96027]::plumbing::QueryCtxt, false>
28: 0x7f459da9fce2 - rustc_query_impl[4050e2da7ab96027]::query_impl::type_of_opaque::get_query_non_incr::__rust_end_short_backtrace
29: 0x7f459cbd0a7f - rustc_hir_analysis[417a0e0ce74bdc30]::collect::type_of::type_of
30: 0x7f459c54079c - rustc_query_impl[4050e2da7ab96027]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[4050e2da7ab96027]::query_impl::type_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7532cecbef1af146]::query::erase::Erased<[u8; 8usize]>>
31: 0x7f459c540760 - <rustc_query_impl[4050e2da7ab96027]::query_impl::type_of::dynamic_query::{closure#2} as core[4ff1a1b12c81ae0a]::ops::function::FnOnce<(rustc_middle[7532cecbef1af146]::ty::context::TyCtxt, rustc_span[52113c30dfc0425a]::def_id::DefId)>>::call_once
32: 0x7f459c2573f0 - rustc_query_system[f4eb094e69159de6]::query::plumbing::try_execute_query::<rustc_query_impl[4050e2da7ab96027]::DynamicConfig<rustc_query_system[f4eb094e69159de6]::query::caches::DefaultCache<rustc_span[52113c30dfc0425a]::def_id::DefId, rustc_middle[7532cecbef1af146]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[4050e2da7ab96027]::plumbing::QueryCtxt, false>
33: 0x7f459da9f941 - rustc_query_impl[4050e2da7ab96027]::query_impl::type_of::get_query_non_incr::__rust_end_short_backtrace
34: 0x7f459d113200 - rustc_middle[7532cecbef1af146]::query::plumbing::query_get_at::<rustc_query_system[f4eb094e69159de6]::query::caches::DefaultCache<rustc_span[52113c30dfc0425a]::def_id::DefId, rustc_middle[7532cecbef1af146]::query::erase::Erased<[u8; 8usize]>>>
35: 0x7f459d10d21a - rustc_hir_analysis[417a0e0ce74bdc30]::check::check::check_mod_item_types
36: 0x7f459cf3a46c - rustc_query_impl[4050e2da7ab96027]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[4050e2da7ab96027]::query_impl::check_mod_item_types::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7532cecbef1af146]::query::erase::Erased<[u8; 0usize]>>
37: 0x7f459cf3a44e - <rustc_query_impl[4050e2da7ab96027]::query_impl::check_mod_item_types::dynamic_query::{closure#2} as core[4ff1a1b12c81ae0a]::ops::function::FnOnce<(rustc_middle[7532cecbef1af146]::ty::context::TyCtxt, rustc_span[52113c30dfc0425a]::def_id::LocalModDefId)>>::call_once
38: 0x7f459d141058 - rustc_query_system[f4eb094e69159de6]::query::plumbing::try_execute_query::<rustc_query_impl[4050e2da7ab96027]::DynamicConfig<rustc_query_system[f4eb094e69159de6]::query::caches::DefaultCache<rustc_span[52113c30dfc0425a]::def_id::LocalModDefId, rustc_middle[7532cecbef1af146]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[4050e2da7ab96027]::plumbing::QueryCtxt, false>
39: 0x7f459daaaac4 - rustc_query_impl[4050e2da7ab96027]::query_impl::check_mod_item_types::get_query_non_incr::__rust_end_short_backtrace
40: 0x7f459d589877 - <rustc_middle[7532cecbef1af146]::hir::map::Map>::for_each_module::<rustc_hir_analysis[417a0e0ce74bdc30]::check_crate::{closure#6}::{closure#0}>
41: 0x7f459d587ff5 - rustc_hir_analysis[417a0e0ce74bdc30]::check_crate
42: 0x7f459d5816c2 - rustc_interface[8cb810cfd898a703]::passes::analysis
43: 0x7f459d592e3a - rustc_query_impl[4050e2da7ab96027]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[4050e2da7ab96027]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7532cecbef1af146]::query::erase::Erased<[u8; 1usize]>>
44: 0x7f459d592e29 - <rustc_query_impl[4050e2da7ab96027]::query_impl::analysis::dynamic_query::{closure#2} as core[4ff1a1b12c81ae0a]::ops::function::FnOnce<(rustc_middle[7532cecbef1af146]::ty::context::TyCtxt, ())>>::call_once
45: 0x7f459d8750e4 - rustc_query_system[f4eb094e69159de6]::query::plumbing::try_execute_query::<rustc_query_impl[4050e2da7ab96027]::DynamicConfig<rustc_query_system[f4eb094e69159de6]::query::caches::SingleCache<rustc_middle[7532cecbef1af146]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[4050e2da7ab96027]::plumbing::QueryCtxt, false>
46: 0x7f459d874e59 - rustc_query_impl[4050e2da7ab96027]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
47: 0x7f459d62ab92 - <rustc_middle[7532cecbef1af146]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[5065b449a99b292a]::run_compiler::{closure#1}::{closure#2}::{closure#6}, core[4ff1a1b12c81ae0a]::result::Result<(), rustc_span[52113c30dfc0425a]::ErrorGuaranteed>>
48: 0x7f459d629bb1 - rustc_span[52113c30dfc0425a]::set_source_map::<core[4ff1a1b12c81ae0a]::result::Result<(), rustc_span[52113c30dfc0425a]::ErrorGuaranteed>, rustc_interface[8cb810cfd898a703]::interface::run_compiler<core[4ff1a1b12c81ae0a]::result::Result<(), rustc_span[52113c30dfc0425a]::ErrorGuaranteed>, rustc_driver_impl[5065b449a99b292a]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
49: 0x7f459d62888e - std[423b84e37edbea9d]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[8cb810cfd898a703]::util::run_in_thread_with_globals<rustc_interface[8cb810cfd898a703]::interface::run_compiler<core[4ff1a1b12c81ae0a]::result::Result<(), rustc_span[52113c30dfc0425a]::ErrorGuaranteed>, rustc_driver_impl[5065b449a99b292a]::run_compiler::{closure#1}>::{closure#0}, core[4ff1a1b12c81ae0a]::result::Result<(), rustc_span[52113c30dfc0425a]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[4ff1a1b12c81ae0a]::result::Result<(), rustc_span[52113c30dfc0425a]::ErrorGuaranteed>>
50: 0x7f459d9ac34e - <<std[423b84e37edbea9d]::thread::Builder>::spawn_unchecked_<rustc_interface[8cb810cfd898a703]::util::run_in_thread_with_globals<rustc_interface[8cb810cfd898a703]::interface::run_compiler<core[4ff1a1b12c81ae0a]::result::Result<(), rustc_span[52113c30dfc0425a]::ErrorGuaranteed>, rustc_driver_impl[5065b449a99b292a]::run_compiler::{closure#1}>::{closure#0}, core[4ff1a1b12c81ae0a]::result::Result<(), rustc_span[52113c30dfc0425a]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[4ff1a1b12c81ae0a]::result::Result<(), rustc_span[52113c30dfc0425a]::ErrorGuaranteed>>::{closure#1} as core[4ff1a1b12c81ae0a]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
51: 0x7f459af71ec5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h21dd47fc485ddadd
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/alloc/src/boxed.rs:2007:9
52: 0x7f459af71ec5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h676a2c85317f6542
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/alloc/src/boxed.rs:2007:9
53: 0x7f459af71ec5 - std::sys::unix::thread::Thread::new::thread_start::h1169492f432a65d4
at /rustc/bdb0fa3ee5ffb4cc1a1b53cbe8344a2b83b1ae2a/library/std/src/sys/unix/thread.rs:108:17
54: 0x7f459aa8c9eb - <unknown>
55: 0x7f459ab10dfc - <unknown>
56: 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 attach the file at `/home/matthias/vcs/github/glacier2/TO_REPORT/rustc-ice-2023-09-21T12:15:07.571359303Z-841491.txt` to your bug report
query stack during panic:
#0 [type_of_opaque] computing type of opaque `Tait::{opaque#0}::{opaque#0}`
#1 [type_of] computing type of `Tait::{opaque#0}::{opaque#0}`
#2 [check_mod_item_types] checking item types 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: E0261, E0412.
For more information about an error, try `rustc --explain E0261`.