RLS crash on nightly

[mikeando]

I upgraded rust to latest nightly, on my OS X box.

$ rustc --version
rustc 1.32.0-nightly (653da4fd0 2018-11-08)

After restarting VSCode to get RLS to restart I got this in the RLS debug output (when running with RUST_BACKTRACE=1)

Note: cargo test and cargo build seem to run OK.

Let me know if you need anything more.

thread 'main' panicked at 'No span found for use glob', libcore/option.rs:1008:5
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::continue_panic_fmt
   7: rust_begin_unwind
   8: core::panicking::panic_fmt
   9: core::option::expect_failed
  10: <rustc_save_analysis::dump_visitor::DumpVisitor<'l, 'tcx, 'll, O>>::process_use_tree
  11: <rustc_save_analysis::dump_visitor::DumpVisitor<'l, 'tcx, 'll, O> as syntax::visit::Visitor<'l>>::visit_item
  12: syntax::visit::walk_block
  13: <rustc_save_analysis::dump_visitor::DumpVisitor<'l, 'tcx, 'll, O> as syntax::visit::Visitor<'l>>::visit_local
  14: <rustc_save_analysis::dump_visitor::DumpVisitor<'l, 'tcx, 'll, O> as syntax::visit::Visitor<'l>>::visit_expr
  15: <rustc_save_analysis::dump_visitor::DumpVisitor<'l, 'tcx, 'll, O> as syntax::visit::Visitor<'l>>::visit_expr
  16: <rustc_save_analysis::dump_visitor::DumpVisitor<'l, 'tcx, 'll, O> as syntax::visit::Visitor<'l>>::visit_item
  17: <rustc_save_analysis::dump_visitor::DumpVisitor<'l, 'tcx, 'll, O> as syntax::visit::Visitor<'l>>::visit_mod
  18: <rustc_save_analysis::DumpHandler<'a> as rustc_save_analysis::SaveHandler>::save
  19: rustc::ty::context::tls::with_context
  20: rustc_save_analysis::process_crate
  21: rustc_driver::enable_save_analysis::{{closure}}::{{closure}}
  22: rustc::util::common::time
  23: rustc_driver::enable_save_analysis::{{closure}}
  24: rustc::ty::context::tls::with_context
  25: rustc_driver::driver::compile_input::{{closure}}
  26: rustc::ty::context::tls::enter_context
  27: <std::thread::local::LocalKey<T>>::with
  28: rustc::ty::context::TyCtxt::create_and_enter
  29: rustc_driver::driver::compile_input
  30: rustc_driver::run_compiler_with_pool
  31: <scoped_tls::ScopedKey<T>>::set
  32: rustc_driver::run_compiler
  33: <scoped_tls::ScopedKey<T>>::set
  34: syntax::with_globals
  35: __rust_maybe_catch_panic
  36: rustc_driver::run
  37: rls_rustc::run
  38: rls::main_inner
  39: rls::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
query stack during panic:
end of query stack

error: internal compiler error: unexpected panic

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

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: rustc 1.32.0-nightly (653da4fd0 2018-11-08) running on x86_64-apple-darwin

note: compiler flags: -C prefer-dynamic -C debuginfo=2 --crate-type dylib

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

[mikeando]

I'm using rocket - so I'm guessing this is a dupe of rust-lang/rls#1117

Sorry for the noise.