thread 'rustc' panicked at compiler/rustc_mir_build/src/build/matches/mod.rs:1819:44:
called `Option::unwrap()` on a `None` value
stack backtrace:
   0:     0x787215839865 - std::backtrace_rs::backtrace::libunwind::trace::h81f95f911fafa2e0
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
   1:     0x787215839865 - std::backtrace_rs::backtrace::trace_unsynchronized::h716bb1cf8e749afa
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x787215839865 - std::backtrace::Backtrace::create::hcd743050eb317edf
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/std/src/backtrace.rs:331:13
   3:     0x7872158397b5 - std::backtrace::Backtrace::force_capture::h94040c4a28235dcc
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/std/src/backtrace.rs:312:9
   4:     0x787211e0daef - std[7937e30b302963fb]::panicking::update_hook::<alloc[477cf02eb44bb706]::boxed::Box<rustc_driver_impl[7142e029c10c6b59]::install_ice_hook::{closure#0}>>::{closure#0}
   5:     0x7872158542df - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h3da72443baa8e06b
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/alloc/src/boxed.rs:2084:9
   6:     0x7872158542df - std::panicking::rust_panic_with_hook::hb85b5d3fee996073
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/std/src/panicking.rs:808:13
   7:     0x787215853ed3 - std::panicking::begin_panic_handler::{{closure}}::hea92f85bb1e00425
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/std/src/panicking.rs:667:13
   8:     0x7872158515e9 - std::sys::backtrace::__rust_end_short_backtrace::h4835e8f15136c715
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/std/src/sys/backtrace.rs:168:18
   9:     0x787215853b94 - rust_begin_unwind
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/std/src/panicking.rs:665:5
  10:     0x78721589d1e3 - core::panicking::panic_fmt::hb0937d4ccfd82515
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/core/src/panicking.rs:74:14
  11:     0x78721589d26c - core::panicking::panic::hf0253255755711c0
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/core/src/panicking.rs:148:5
  12:     0x78721589cfd9 - core::option::unwrap_failed::h977210acadcd397c
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/core/src/option.rs:2020:5
  13:     0x787214378d22 - <rustc_mir_build[59930219bf4b5eec]::build::Builder>::test_candidates
  14:     0x78721382c54f - <rustc_mir_build[59930219bf4b5eec]::build::Builder>::match_candidates
  15:     0x787213851d8e - <rustc_mir_build[59930219bf4b5eec]::build::Builder>::expr_into_dest
  16:     0x78721384e5ad - <rustc_mir_build[59930219bf4b5eec]::build::Builder>::expr_into_dest
  17:     0x787213fe4cd5 - <rustc_mir_build[59930219bf4b5eec]::build::Builder>::ast_block_stmts
  18:     0x787213fe3c88 - <rustc_mir_build[59930219bf4b5eec]::build::Builder>::ast_block
  19:     0x78721384d29d - <rustc_mir_build[59930219bf4b5eec]::build::Builder>::expr_into_dest
  20:     0x78721384e5ad - <rustc_mir_build[59930219bf4b5eec]::build::Builder>::expr_into_dest
  21:     0x787213823328 - rustc_mir_build[59930219bf4b5eec]::build::mir_build
  22:     0x787213821112 - rustc_query_impl[605027aade2a4ac3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[605027aade2a4ac3]::query_impl::mir_built::dynamic_query::{closure#2}::{closure#0}, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 8usize]>>
  23:     0x7872136af233 - rustc_query_system[31614e0fcb44922f]::query::plumbing::try_execute_query::<rustc_query_impl[605027aade2a4ac3]::DynamicConfig<rustc_query_system[31614e0fcb44922f]::query::caches::VecCache<rustc_span[e004d66d1d23c23]::def_id::LocalDefId, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[605027aade2a4ac3]::plumbing::QueryCtxt, false>
  24:     0x7872136aed4d - rustc_query_impl[605027aade2a4ac3]::query_impl::mir_built::get_query_non_incr::__rust_end_short_backtrace
  25:     0x787213490d51 - rustc_mir_transform[ccbeed5cd9d831af]::ffi_unwind_calls::has_ffi_unwind_calls
  26:     0x7872134906dd - rustc_query_impl[605027aade2a4ac3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[605027aade2a4ac3]::query_impl::has_ffi_unwind_calls::dynamic_query::{closure#2}::{closure#0}, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 1usize]>>
  27:     0x787213813781 - rustc_query_system[31614e0fcb44922f]::query::plumbing::try_execute_query::<rustc_query_impl[605027aade2a4ac3]::DynamicConfig<rustc_query_system[31614e0fcb44922f]::query::caches::VecCache<rustc_span[e004d66d1d23c23]::def_id::LocalDefId, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[605027aade2a4ac3]::plumbing::QueryCtxt, false>
  28:     0x787213813441 - rustc_query_impl[605027aade2a4ac3]::query_impl::has_ffi_unwind_calls::get_query_non_incr::__rust_end_short_backtrace
  29:     0x7872105b007b - rustc_mir_transform[ccbeed5cd9d831af]::mir_promoted
  30:     0x787213757d52 - rustc_query_impl[605027aade2a4ac3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[605027aade2a4ac3]::query_impl::mir_promoted::dynamic_query::{closure#2}::{closure#0}, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 16usize]>>
  31:     0x787213758005 - rustc_query_system[31614e0fcb44922f]::query::plumbing::try_execute_query::<rustc_query_impl[605027aade2a4ac3]::DynamicConfig<rustc_query_system[31614e0fcb44922f]::query::caches::VecCache<rustc_span[e004d66d1d23c23]::def_id::LocalDefId, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[605027aade2a4ac3]::plumbing::QueryCtxt, false>
  32:     0x7872143df650 - rustc_query_impl[605027aade2a4ac3]::query_impl::mir_promoted::get_query_non_incr::__rust_end_short_backtrace
  33:     0x7872143df743 - rustc_query_impl[605027aade2a4ac3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[605027aade2a4ac3]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 8usize]>>
  34:     0x7872136af233 - rustc_query_system[31614e0fcb44922f]::query::plumbing::try_execute_query::<rustc_query_impl[605027aade2a4ac3]::DynamicConfig<rustc_query_system[31614e0fcb44922f]::query::caches::VecCache<rustc_span[e004d66d1d23c23]::def_id::LocalDefId, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[605027aade2a4ac3]::plumbing::QueryCtxt, false>
  35:     0x7872136aec8d - rustc_query_impl[605027aade2a4ac3]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
  36:     0x787214127dde - rustc_middle[75c4f8fdde64a049]::query::plumbing::query_get_at::<rustc_query_system[31614e0fcb44922f]::query::caches::VecCache<rustc_span[e004d66d1d23c23]::def_id::LocalDefId, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 8usize]>>>
  37:     0x787214127e56 - <rustc_borrowck[64c6b83566933cb9]::type_check::TypeChecker>::prove_closure_bounds
  38:     0x7872135d096e - <rustc_borrowck[64c6b83566933cb9]::type_check::TypeChecker>::typeck_mir
  39:     0x78721453e92c - rustc_borrowck[64c6b83566933cb9]::type_check::type_check
  40:     0x78721350ae1f - rustc_borrowck[64c6b83566933cb9]::nll::compute_regions
  41:     0x7872143ee712 - rustc_borrowck[64c6b83566933cb9]::do_mir_borrowck
  42:     0x7872143df802 - rustc_query_impl[605027aade2a4ac3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[605027aade2a4ac3]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 8usize]>>
  43:     0x7872136af233 - rustc_query_system[31614e0fcb44922f]::query::plumbing::try_execute_query::<rustc_query_impl[605027aade2a4ac3]::DynamicConfig<rustc_query_system[31614e0fcb44922f]::query::caches::VecCache<rustc_span[e004d66d1d23c23]::def_id::LocalDefId, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[605027aade2a4ac3]::plumbing::QueryCtxt, false>
  44:     0x7872136aec8d - rustc_query_impl[605027aade2a4ac3]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
  45:     0x787213be1fb3 - rustc_middle[75c4f8fdde64a049]::query::plumbing::query_get_at::<rustc_query_system[31614e0fcb44922f]::query::caches::VecCache<rustc_span[e004d66d1d23c23]::def_id::LocalDefId, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 8usize]>>>
  46:     0x787211fcd301 - <rustc_hir_analysis[5113b133aeb775ec]::collect::type_of::opaque::TaitConstraintLocator>::check
  47:     0x787214299d48 - rustc_hir_analysis[5113b133aeb775ec]::collect::type_of::type_of_opaque
  48:     0x7872142994c7 - rustc_query_impl[605027aade2a4ac3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[605027aade2a4ac3]::query_impl::type_of_opaque::dynamic_query::{closure#2}::{closure#0}, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 8usize]>>
  49:     0x78721368e720 - rustc_query_system[31614e0fcb44922f]::query::plumbing::try_execute_query::<rustc_query_impl[605027aade2a4ac3]::DynamicConfig<rustc_query_system[31614e0fcb44922f]::query::caches::DefIdCache<rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[605027aade2a4ac3]::plumbing::QueryCtxt, false>
  50:     0x787214599736 - rustc_query_impl[605027aade2a4ac3]::query_impl::type_of_opaque::get_query_non_incr::__rust_end_short_backtrace
  51:     0x787213a46c80 - rustc_middle[75c4f8fdde64a049]::query::plumbing::query_get_at::<rustc_query_system[31614e0fcb44922f]::query::caches::DefIdCache<rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 8usize]>>>
  52:     0x7872109619e7 - rustc_hir_analysis[5113b133aeb775ec]::collect::type_of::type_of
  53:     0x78721368f9ea - rustc_query_impl[605027aade2a4ac3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[605027aade2a4ac3]::query_impl::type_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 8usize]>>
  54:     0x78721368e720 - rustc_query_system[31614e0fcb44922f]::query::plumbing::try_execute_query::<rustc_query_impl[605027aade2a4ac3]::DynamicConfig<rustc_query_system[31614e0fcb44922f]::query::caches::DefIdCache<rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[605027aade2a4ac3]::plumbing::QueryCtxt, false>
  55:     0x78721368e2e7 - rustc_query_impl[605027aade2a4ac3]::query_impl::type_of::get_query_non_incr::__rust_end_short_backtrace
  56:     0x787213a46c80 - rustc_middle[75c4f8fdde64a049]::query::plumbing::query_get_at::<rustc_query_system[31614e0fcb44922f]::query::caches::DefIdCache<rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 8usize]>>>
  57:     0x787210992863 - rustc_hir_analysis[5113b133aeb775ec]::check::wfcheck::check_well_formed
  58:     0x7872138720bd - rustc_query_impl[605027aade2a4ac3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[605027aade2a4ac3]::query_impl::check_well_formed::dynamic_query::{closure#2}::{closure#0}, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 1usize]>>
  59:     0x787213872335 - rustc_query_system[31614e0fcb44922f]::query::plumbing::try_execute_query::<rustc_query_impl[605027aade2a4ac3]::DynamicConfig<rustc_query_system[31614e0fcb44922f]::query::caches::VecCache<rustc_hir[b06fbdab6577f223]::hir_id::OwnerId, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[605027aade2a4ac3]::plumbing::QueryCtxt, false>
  60:     0x78721387209a - rustc_query_impl[605027aade2a4ac3]::query_impl::check_well_formed::get_query_non_incr::__rust_end_short_backtrace
  61:     0x787213872d49 - rustc_hir_analysis[5113b133aeb775ec]::check::wfcheck::check_mod_type_wf
  62:     0x787213872b99 - rustc_query_impl[605027aade2a4ac3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[605027aade2a4ac3]::query_impl::check_mod_type_wf::dynamic_query::{closure#2}::{closure#0}, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 1usize]>>
  63:     0x787213f00438 - rustc_query_system[31614e0fcb44922f]::query::plumbing::try_execute_query::<rustc_query_impl[605027aade2a4ac3]::DynamicConfig<rustc_query_system[31614e0fcb44922f]::query::caches::DefaultCache<rustc_span[e004d66d1d23c23]::def_id::LocalModDefId, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[605027aade2a4ac3]::plumbing::QueryCtxt, false>
  64:     0x787213f001e7 - rustc_query_impl[605027aade2a4ac3]::query_impl::check_mod_type_wf::get_query_non_incr::__rust_end_short_backtrace
  65:     0x7872136aba81 - rustc_hir_analysis[5113b133aeb775ec]::check_crate
  66:     0x787213861915 - rustc_interface[bbe3c084b2c66d33]::passes::analysis
  67:     0x7872138614cd - rustc_query_impl[605027aade2a4ac3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[605027aade2a4ac3]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 1usize]>>
  68:     0x7872142f5265 - rustc_query_system[31614e0fcb44922f]::query::plumbing::try_execute_query::<rustc_query_impl[605027aade2a4ac3]::DynamicConfig<rustc_query_system[31614e0fcb44922f]::query::caches::SingleCache<rustc_middle[75c4f8fdde64a049]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[605027aade2a4ac3]::plumbing::QueryCtxt, false>
  69:     0x7872142f4fcf - rustc_query_impl[605027aade2a4ac3]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  70:     0x7872141bdb85 - rustc_interface[bbe3c084b2c66d33]::interface::run_compiler::<core[148cee03e479a192]::result::Result<(), rustc_span[e004d66d1d23c23]::ErrorGuaranteed>, rustc_driver_impl[7142e029c10c6b59]::run_compiler::{closure#0}>::{closure#1}
  71:     0x7872141a1f09 - std[7937e30b302963fb]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[bbe3c084b2c66d33]::util::run_in_thread_with_globals<rustc_interface[bbe3c084b2c66d33]::util::run_in_thread_pool_with_globals<rustc_interface[bbe3c084b2c66d33]::interface::run_compiler<core[148cee03e479a192]::result::Result<(), rustc_span[e004d66d1d23c23]::ErrorGuaranteed>, rustc_driver_impl[7142e029c10c6b59]::run_compiler::{closure#0}>::{closure#1}, core[148cee03e479a192]::result::Result<(), rustc_span[e004d66d1d23c23]::ErrorGuaranteed>>::{closure#0}, core[148cee03e479a192]::result::Result<(), rustc_span[e004d66d1d23c23]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[148cee03e479a192]::result::Result<(), rustc_span[e004d66d1d23c23]::ErrorGuaranteed>>
  72:     0x7872141a1cba - <<std[7937e30b302963fb]::thread::Builder>::spawn_unchecked_<rustc_interface[bbe3c084b2c66d33]::util::run_in_thread_with_globals<rustc_interface[bbe3c084b2c66d33]::util::run_in_thread_pool_with_globals<rustc_interface[bbe3c084b2c66d33]::interface::run_compiler<core[148cee03e479a192]::result::Result<(), rustc_span[e004d66d1d23c23]::ErrorGuaranteed>, rustc_driver_impl[7142e029c10c6b59]::run_compiler::{closure#0}>::{closure#1}, core[148cee03e479a192]::result::Result<(), rustc_span[e004d66d1d23c23]::ErrorGuaranteed>>::{closure#0}, core[148cee03e479a192]::result::Result<(), rustc_span[e004d66d1d23c23]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[148cee03e479a192]::result::Result<(), rustc_span[e004d66d1d23c23]::ErrorGuaranteed>>::{closure#2} as core[148cee03e479a192]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  73:     0x78721585e33b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h62af1c252974e0db
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/alloc/src/boxed.rs:2070:9
  74:     0x78721585e33b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6e711421bc35ccc9
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/alloc/src/boxed.rs:2070:9
  75:     0x78721585e33b - std::sys::pal::unix::thread::Thread::new::thread_start::h70449abe2e248417
                               at /rustc/5affbb17153bc69a9d5d8d2faa4e399a014a211e/library/std/src/sys/pal/unix/thread.rs:108:17
  76:     0x78720e694ac3 - start_thread
                               at ./nptl/pthread_create.c:442:8
  77:     0x78720e726850 - __GI___clone3
                               at ./misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
  78:                0x0 - <unknown>


rustc version: 1.81.0-nightly (5affbb171 2024-07-18)
platform: x86_64-unknown-linux-gnu

query stack during panic:
#0 [mir_built] building MIR for `enum_upvar::{closure#0}`
#1 [has_ffi_unwind_calls] checking if `enum_upvar::{closure#0}` contains FFI-unwind calls
#2 [mir_promoted] promoting constants in MIR for `enum_upvar::{closure#0}`
#3 [mir_borrowck] borrow-checking `enum_upvar::{closure#0}`
#4 [mir_borrowck] borrow-checking `enum_upvar`
#5 [type_of_opaque] computing type of opaque `enum_upvar::T::{opaque#0}`
#6 [type_of] computing type of `enum_upvar::T::{opaque#0}`
#7 [check_well_formed] checking that `enum_upvar::T::{opaque#0}` is well-formed
#8 [check_mod_type_wf] checking that types are well-formed in top-level module
#9 [analysis] running analysis passes on this crate
end of query stack