ICE: trust-dns-proto

[Davester47]

It broke when I updated nightly

I think this crate was a dependency of one of my dependencies. I don't directly use it at all. The crate is trust-dns-proto and I have no idea what it does. It broke just today as I updated the nightly compiler. It worked in nightly 1eaadeb 2020-10-21.

Meta

rustc --version --verbose:

rustc 1.49.0-nightly (4f7612ac1 2020-10-31)
binary: rustc
commit-hash: 4f7612ac1499258025077f1fd05d2f429f9accfb
commit-date: 2020-10-31
host: x86_64-unknown-linux-gnu
release: 1.49.0-nightly

Error output

   Compiling trust-dns-proto v0.19.5
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 }) })

thread 'rustc' panicked at 'Box<Any>', compiler/rustc_errors/src/lib.rs:942:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

note: the compiler unexpectedly panicked. this is a bug.

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 1.49.0-nightly (4f7612ac1 2020-10-31) running on x86_64-unknown-linux-gnu

note: compiler flags: -C embed-bitcode=no -C debuginfo=2 --crate-type lib

note: some of the compiler flags provided by cargo are hidden

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
error: aborting due to previous error

error: could not compile `trust-dns-proto`

To learn more, run the command again with --verbose.

RUST_BACKTRACE=1

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 }) })

thread 'rustc' panicked at 'Box<Any>', compiler/rustc_errors/src/lib.rs:942:9
stack backtrace:
   0: std::panicking::begin_panic
   1: rustc_errors::HandlerInner::bug
   2: rustc_errors::Handler::bug
   3: rustc_middle::util::bug::opt_span_bug_fmt::{{closure}}
   4: rustc_middle::ty::context::tls::with_opt::{{closure}}
   5: rustc_middle::ty::context::tls::with_opt
   6: rustc_middle::util::bug::opt_span_bug_fmt
   7: rustc_middle::util::bug::bug_fmt
   8: rustc_mir_build::thir::pattern::_match::Matrix::specialize_constructor
   9: <core::iter::adapters::Map<I,F> as core::iter::traits::iterator::Iterator>::try_fold
  10: rustc_mir_build::thir::pattern::_match::is_useful
  11: <rustc_mir_build::thir::pattern::check_match::MatchVisitor as rustc_hir::intravisit::Visitor>::visit_expr
  12: rustc_hir::intravisit::walk_expr
  13: <rustc_mir_build::thir::pattern::check_match::MatchVisitor as rustc_hir::intravisit::Visitor>::visit_expr
  14: rustc_mir_build::thir::pattern::check_match::check_match
  15: 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
  16: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  17: rustc_data_structures::stack::ensure_sufficient_stack
  18: rustc_query_system::query::plumbing::get_query_impl
  19: rustc_query_system::query::plumbing::ensure_query_impl
  20: rustc_interface::passes::analysis
  21: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::analysis>::compute
  22: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  23: rustc_data_structures::stack::ensure_sufficient_stack
  24: rustc_query_system::query::plumbing::get_query_impl
  25: rustc_interface::passes::QueryContext::enter
  26: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
  27: rustc_span::with_source_map
  28: scoped_tls::ScopedKey<T>::set
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

note: the compiler unexpectedly panicked. this is a bug.

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 1.49.0-nightly (4f7612ac1 2020-10-31) running on x86_64-unknown-linux-gnu

note: compiler flags: -C embed-bitcode=no -C debuginfo=2 --crate-type lib

note: some of the compiler flags provided by cargo are hidden

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
error: aborting due to previous error

[jonas-schievink]

Duplicate of #78549