ICE on hello-world with nightly-2019-05-15

[parasyte]

Steps to reproduce:

cargo new --bin ice
cd ice
rustup install nightly-2019-05-15
rustup component add rls --toolchain nightly-2019-05-15
RUST_BAKCTRACE=1 rustup run nightly-2019-05-15 rls --cli # May require more than one try

Error:

thread 'rustc' panicked at 'index out of bounds: the len is 3 but the index is 4294955815', /rustc/372be4f360ce42b1a10126a711189796f8440ab4/src/libcore/slice/mod.rs:2695:10
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
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::panicking::panic_bounds_check
  10: scoped_tls::ScopedKey<T>::with
  11: syntax_pos::symbol::Symbol::as_str
  12: <alloc::vec::Vec<T> as alloc::vec::SpecExtend<T,I>>::from_iter
  13: clippy_lints::utils::match_def_path
  14: <clippy_lints::regex::Regex as rustc::lint::LateLintPass>::check_expr
  15: <rustc::lint::context::LateLintPassObjects as rustc::lint::LateLintPass>::check_expr
  16: <rustc::lint::context::LateContextAndPass<T> as rustc::hir::intravisit::Visitor>::visit_expr
  17: rustc::hir::intravisit::walk_block
  18: rustc::hir::intravisit::walk_expr
  19: <rustc::lint::context::LateContextAndPass<T> as rustc::hir::intravisit::Visitor>::visit_expr
  20: rustc::hir::intravisit::walk_block
  21: rustc::hir::intravisit::walk_expr
  22: <rustc::lint::context::LateContextAndPass<T> as rustc::hir::intravisit::Visitor>::visit_expr
  23: rustc::hir::intravisit::walk_fn
  24: rustc::hir::intravisit::walk_item
  25: rustc::hir::intravisit::Visitor::visit_nested_item
  26: rustc::hir::intravisit::walk_crate
  27: rustc::lint::context::late_lint_pass_crate
  28: rustc::lint::context::late_lint_crate
  29: rustc::util::common::time
  30: rustc::util::common::time
  31: __rust_maybe_catch_panic
  32: <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
  33: __rust_maybe_catch_panic
  34: rustc_interface::passes::analysis::{{closure}}
  35: rustc::util::common::time
  36: rustc_interface::passes::analysis
  37: rustc::ty::query::__query_compute::analysis
  38: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::analysis>::compute
  39: rustc::dep_graph::graph::DepGraph::with_task_impl
  40: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
  41: rustc::ty::context::tls::enter_global
  42: rustc_interface::passes::BoxedGlobalCtxt::access::{{closure}}
  43: rustc_interface::passes::create_global_ctxt::{{closure}}
  44: rustc_interface::interface::run_compiler_in_existing_thread_pool
  45: std::thread::local::LocalKey<T>::with
  46: scoped_tls::ScopedKey<T>::set
  47: syntax::with_globals
query stack during panic:
end of query stack

[dvic]

rustup override set nightly-2019-05-12 fixed the problem for me.

It seems that this version is the latest version that does not have this problem.

[Xanewok]

thread 'rustc' panicked at 'index out of bounds: the len is 3 but the index is 4294955815', /rustc/372be4f360ce42b1a10126a711189796f8440ab4/src/libcore/slice/mod.rs:2695:10
...
   9: core::panicking::panic_bounds_check
  10: scoped_tls::ScopedKey<T>::with
  11: syntax_pos::symbol::Symbol::as_str
  12: <alloc::vec::Vec<T> as alloc::vec::SpecExtend<T,I>>::from_iter
  13: clippy_lints::utils::match_def_path

@Manishearth @oli-obk I assume that's due to the symbols (or clippy's usage of them in lazy_static) being unsound? Will this be fixed with rust-lang/rust#60940?

[Manishearth]

Yep, however that won't release a new RLS till the cargo breakage is fixed too.