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
use fuchsia_async::{self as fasync};