2018 import ICE

[benbrittain]

use fuchsia_async::{self as fasync};

error: internal compiler error: librustc/hir/def.rs:263: attempted .def_id() on invalid def: Err

thread 'main' panicked at 'Box<Any>', librustc_errors/lib.rs:580:9
stack backtrace:
   0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
   1: std::sys_common::backtrace::print
   2: std::panicking::default_hook::{{closure}}
   3: std::panicking::default_hook
   4: rustc::util::common::panic_hook
   5: std::panicking::rust_panic_with_hook
   6: std::panicking::begin_panic
   7: rustc_errors::Handler::bug
   8: rustc::session::opt_span_bug_fmt::{{closure}}
   9: rustc::ty::context::tls::with_opt::{{closure}}
  10: rustc::ty::context::tls::with_context_opt
  11: rustc::ty::context::tls::with_opt
  12: rustc::session::opt_span_bug_fmt
  13: rustc::session::bug_fmt
  14: rustc::hir::def::Def::def_id
  15: rustc_privacy::ObsoleteVisiblePrivateTypesVisitor::path_is_private_type
  16: rustc::hir::intravisit::walk_fn_decl
  17: rustc::hir::intravisit::walk_fn
  18: rustc::hir::intravisit::walk_item
  19: rustc::hir::intravisit::walk_item
  20: rustc_privacy::privacy_access_levels
  21: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors<'tcx> for rustc::ty::query::queries::privacy_access_levels<'tcx>>::compute
  22: rustc::ty::context::tls::with_context
  23: rustc::dep_graph::graph::DepGraph::with_task_impl
  24: rustc::ty::context::tls::with_related_context
  25: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job
  26: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query
  27: rustc::util::common::time
  28: rustc::ty::context::tls::enter_context
  29: <std::thread::local::LocalKey<T>>::with
  30: rustc::ty::context::TyCtxt::create_and_enter
  31: rustc_driver::driver::compile_input
  32: rustc_driver::run_compiler_with_pool
  33: <scoped_tls::ScopedKey<T>>::set
  34: <scoped_tls::ScopedKey<T>>::set
  35: syntax::with_globals
  36: <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
  37: __rust_maybe_catch_panic
  38: rustc_driver::run
  39: rustc_driver::main
  40: std::rt::lang_start::{{closure}}
  41: std::panicking::try::do_call
  42: __rust_maybe_catch_panic
  43: std::rt::lang_start_internal
  44: main
  45: __libc_start_main
  46: _start
query stack during panic:
#0 [privacy_access_levels] privacy access levels
end of query stack
error: aborting due to previous error

[benbrittain]

cc: @cramertj

[aturon]

cc @petrochenkov

[aturon]

Would be great to get a small repro.

[petrochenkov]

#53001 should fix this.