ICE: Trying to compare incompatible constructors

[skeleten]

Code

Unfortunately it is a closed project and I have not been able to determine a minimal example, thus I am unable to provide any code -- Sorry.

Meta

The error occurs only when using the Docker image rustlang/rust:nightly. I am able to compile the code on my development machine, using the rustc version

rustc --version --verbose: (Working version)

rustc 1.49.0-nightly (ffa2e7ae8 2020-10-24)
binary: rustc
commit-hash: ffa2e7ae8fbf9badc035740db949b9dae271c29f
commit-date: 2020-10-24
host: x86_64-unknown-linux-gnu
release: 1.49.0-nightly
LLVM version: 11.0

rustc --version --verbose: (version spawning the ICE)

rustc 1.49.0-nightly (ffe52882e 2020-10-30)
binary: rustc
commit-hash: ffe52882ed79be67344dd6085559e308241e7f60
commit-date: 2020-10-30
host: x86_64-unknown-linux-gnu
release: 1.49.0-nightly

Error output

error: internal compiler error: compiler/rustc_mir_build/src/thir/pattern/_match.rs:931:18: trying to compare incompatible constructors Single and Str(Const { ty: &str, val: Value(Slice { data: Allocation { bytes: [105, 115, 115, 117, 101], relocations: Relocations(SortedMap { data: [] }), init_mask: InitMask { blocks: [31], len: Size { raw: 5 } }, size: Size { raw: 5 }, align: Align { pow2: 0 }, mutability: Not, extra: () }, start: 0, end: 5 }) })

Backtrace

thread 'rustc' panicked at 'Box<Any>', compiler/rustc_errors/src/lib.rs:942:9
stack backtrace:
   0:     0x7f3b758755f0 - std::backtrace_rs::backtrace::libunwind::trace::h448c56741b6011d3
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5
   1:     0x7f3b758755f0 - std::backtrace_rs::backtrace::trace_unsynchronized::h2d26397c5720fdbb
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f3b758755f0 - std::sys_common::backtrace::_print_fmt::h720a2f61f75b9f58
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/std/src/sys_common/backtrace.rs:67:5
   3:     0x7f3b758755f0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8d62bbfda6d5c836
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/std/src/sys_common/backtrace.rs:46:22
   4:     0x7f3b758e552c - core::fmt::write::h1857a60b204f1b6a
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/core/src/fmt/mod.rs:1078:17
   5:     0x7f3b75867252 - std::io::Write::write_fmt::h16a9fe7680ac245c
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/std/src/io/mod.rs:1518:15
   6:     0x7f3b7587a5a5 - std::sys_common::backtrace::_print::h9ba51a6db618de7d
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/std/src/sys_common/backtrace.rs:49:5
   7:     0x7f3b7587a5a5 - std::sys_common::backtrace::print::h5f20e41c85e91716
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/std/src/sys_common/backtrace.rs:36:9
   8:     0x7f3b7587a5a5 - std::panicking::default_hook::{{closure}}::h5b7294ca19e8edab
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/std/src/panicking.rs:208:50
   9:     0x7f3b7587a248 - std::panicking::default_hook::hb3948d1f74b6ff4c
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/std/src/panicking.rs:227:9
  10:     0x7f3b76144658 - rustc_driver::report_ice::h1ddbc5609a6e1f37
  11:     0x7f3b68849bb6 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hf136d8f69a367db7
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/alloc/src/boxed.rs:1321:9
  12:     0x7f3b688458cb - proc_macro::bridge::client::<impl proc_macro::bridge::Bridge>::enter::{{closure}}::{{closure}}::hf3b9eea5e77cdc2a
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/proc_macro/src/bridge/client.rs:320:21
  13:     0x7f3b7587aea6 - std::panicking::rust_panic_with_hook::h55d23fef0ad751bc
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/std/src/panicking.rs:597:17
  14:     0x7f3b7913ed5d - std::panicking::begin_panic::{{closure}}::h4b123e1d8e3ae463
  15:     0x7f3b7913ec96 - std::sys_common::backtrace::__rust_end_short_backtrace::ha21fec08f03d728b
  16:     0x7f3b7913ed2f - std::panicking::begin_panic::hc0c81fab1e0acd00
  17:     0x7f3b79150c90 - rustc_errors::HandlerInner::bug::h26f9bc1a7147687e
  18:     0x7f3b7914f7e0 - rustc_errors::Handler::bug::h2149bffe74600666
  19:     0x7f3b78bae3c4 - rustc_middle::util::bug::opt_span_bug_fmt::{{closure}}::h9fafd217538ab02e
  20:     0x7f3b78ba7eeb - rustc_middle::ty::context::tls::with_opt::{{closure}}::h6dc4ddb450eaa7bf
  21:     0x7f3b78ba78a2 - rustc_middle::ty::context::tls::with_opt::ha2cfd84f58be3d57
  22:     0x7f3b78bae2e9 - rustc_middle::util::bug::opt_span_bug_fmt::hc7cbb029c2646db9
  23:     0x7f3b78bae25e - rustc_middle::util::bug::bug_fmt::hb51c412c48cda8bb
  24:     0x7f3b773718b5 - rustc_mir_build::thir::pattern::_match::Matrix::specialize_constructor::h36673621382da348
  25:     0x7f3b7733a51a - <core::iter::adapters::Map<I,F> as core::iter::traits::iterator::Iterator>::try_fold::hc5d1fe05ffff39c8
  26:     0x7f3b77377568 - rustc_mir_build::thir::pattern::_match::is_useful::hf8efd6153416cf2d
  27:     0x7f3b7730be68 - <rustc_mir_build::thir::pattern::check_match::MatchVisitor as rustc_hir::intravisit::Visitor>::visit_expr::h865c9f6d42685550
  28:     0x7f3b77314d0a - rustc_hir::intravisit::walk_expr::hd0093ab50ae5a8d4
  29:     0x7f3b7730baec - <rustc_mir_build::thir::pattern::check_match::MatchVisitor as rustc_hir::intravisit::Visitor>::visit_expr::h865c9f6d42685550
  30:     0x7f3b7730b813 - rustc_mir_build::thir::pattern::check_match::check_match::h2d5b60d42651dc41
  31:     0x7f3b76396cd9 - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::check_match>::compute::h3dd4584521cdb95e
  32:     0x7f3b762fdb94 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::ha5792d8d35599b62
  33:     0x7f3b76361ff4 - rustc_data_structures::stack::ensure_sufficient_stack::h3626f02a47d49f69
  34:     0x7f3b762f245f - rustc_query_system::query::plumbing::get_query_impl::hfaed35f7e6414273
  35:     0x7f3b762f3b42 - rustc_query_system::query::plumbing::ensure_query_impl::ha7327a13b80a3079
  36:     0x7f3b76392d89 - rustc_interface::passes::analysis::h78326215bfd650a0
  37:     0x7f3b76182c2b - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::analysis>::compute::hf8d4bc54d08537f3
  38:     0x7f3b76147c37 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::h982af355bf58c5b3
  39:     0x7f3b76163660 - rustc_data_structures::stack::ensure_sufficient_stack::he424948b1b3ac791
  40:     0x7f3b760f46a0 - rustc_query_system::query::plumbing::get_query_impl::h448d10ab90370983
  41:     0x7f3b76185cef - rustc_interface::passes::QueryContext::enter::hbf7a36e966e91449
  42:     0x7f3b76161116 - rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter::h36c5ed3de81f7a3c
  43:     0x7f3b760edbc7 - rustc_span::with_source_map::h4e49cbd9a39d01b4
  44:     0x7f3b7615c321 - scoped_tls::ScopedKey<T>::set::hca96dcfe1d32eebf
  45:     0x7f3b76163fd5 - std::sys_common::backtrace::__rust_begin_short_backtrace::h21cfd4855c5058aa
  46:     0x7f3b760ce518 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2df6ccf8e166462a
  47:     0x7f3b75889eaa - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h9e7afb7a0a438236
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/alloc/src/boxed.rs:1307:9
  48:     0x7f3b75889eaa - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h70c646c4271337a1
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/alloc/src/boxed.rs:1307:9
  49:     0x7f3b75889eaa - std::sys::unix::thread::Thread::new::thread_start::h35d2b8d36f210d02
                               at /rustc/ffe52882ed79be67344dd6085559e308241e7f60/library/std/src/sys/unix/thread.rs:89:17
  50:     0x7f3b757befa3 - start_thread
  51:     0x7f3b756de4cf - clone
  52:                0x0 - <unknown>

query stack during panic

#0 [check_match] match-checking `<rr::rdata::caa::Property as std::convert::From<std::string::String>>::from`
#1 [analysis] running analysis passes on this crate
end of query stack

[jonas-schievink]

Duplicate of #78549