Crash when running clippy on crate within a crate.

[jonathanbarnett]

I have a rust crate that contains a separate Rust library within it (dependent on the main crate). Running Clippy on the main crate returns the usual Clippy output, but running:

cargo +nightly clippy -p [sub-crate name] or cargo +nightly clippy --all

returns:

error: internal compiler error: librustc/infer/canonical.rs:707: failed to lift `QueryResult { var_values: CanonicalVarValues { var_values: [] }, region_constraints: QueryRegionConstraints { region_outlives: [(ReErased, '?0), (ReErased, '?1), ('?0, ReErased), ('?1, ReErased)], ty_outlives: [] }, certainty: Proven, value: NormalizationResult { normalized_ty: bool } }`, canonicalized from `QueryResult { var_values: CanonicalVarValues { var_values: [] }, region_constraints: QueryRegionConstraints { region_outlives: [(ReErased, '_#0r), (ReErased, '_#1r), ('_#0r, ReErased), ('_#1r, ReErased)], ty_outlives: [] }, certainty: Proven, value: NormalizationResult { normalized_ty: bool } }`

thread 'rustc' panicked at 'Box<Any>', librustc_errors/lib.rs:543:9
note: Run with `RUST_BACKTRACE=1` for a backtrace.
error: aborting due to previous error


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 1.26.0-nightly (e5277c145 2018-03-28) running on x86_64-unknown-linux-gnu

note: compiler flags: -C debuginfo=2 -C incremental --crate-type cdylib --crate-type lib

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

Meta

rustc --version --verbose:

rustc 1.25.0 (84203ca 2018-03-25)
binary: rustc
commit-hash: 84203ca
commit-date: 2018-03-25
host: x86_64-unknown-linux-gnu
release: 1.25.0
LLVM version: 6.0

Backtrace:

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
             at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::print
             at libstd/sys_common/backtrace.rs:71
             at libstd/sys_common/backtrace.rs:59
   2: std::panicking::default_hook::{{closure}}
             at libstd/panicking.rs:207
   3: std::panicking::default_hook
             at libstd/panicking.rs:223
   4: core::ops::function::Fn::call
   5: std::panicking::rust_panic_with_hook
             at libstd/panicking.rs:403
   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: <std::thread::local::LocalKey<T>>::try_with
  11: <std::thread::local::LocalKey<T>>::with
  12: rustc::ty::context::tls::with
  13: rustc::ty::context::tls::with_opt
  14: rustc::session::opt_span_bug_fmt
  15: rustc::session::bug_fmt
  16: rustc::infer::canonical::Canonicalizer::canonicalize
  17: rustc_traits::util::make_query_response
  18: rustc::ty::context::tls::enter
  19: rustc::infer::InferCtxtBuilder::enter
  20: rustc_traits::normalize_projection_ty::normalize_projection_ty
  21: rustc::ty::maps::<impl rustc::ty::maps::queries::normalize_projection_ty<'tcx>>::compute_result
  22: rustc::dep_graph::graph::DepGraph::with_task_impl
  23: rustc_errors::Handler::track_diagnostics
  24: rustc::ty::maps::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::cycle_check
  25: rustc::ty::maps::<impl rustc::ty::maps::queries::normalize_projection_ty<'tcx>>::force
  26: rustc::ty::maps::<impl rustc::ty::maps::queries::normalize_projection_ty<'tcx>>::try_get
  27: rustc::ty::maps::TyCtxtAt::normalize_projection_ty
  28: <rustc::traits::query::normalize::QueryNormalizer<'cx, 'gcx, 'tcx> as rustc::ty::fold::TypeFolder<'gcx, 'tcx>>::fold_ty
  29: rustc::traits::query::normalize::<impl rustc::infer::at::At<'cx, 'gcx, 'tcx>>::normalize
  30: rustc::ty::context::tls::enter
  31: rustc_traits::normalize_erasing_regions::normalize_ty_after_erasing_regions
  32: rustc::ty::maps::<impl rustc::ty::maps::queries::normalize_ty_after_erasing_regions<'tcx>>::compute_result
  33: rustc::dep_graph::graph::DepGraph::with_task_impl
  34: rustc_errors::Handler::track_diagnostics
  35: rustc::ty::maps::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::cycle_check
  36: rustc::ty::maps::<impl rustc::ty::maps::queries::normalize_ty_after_erasing_regions<'tcx>>::force
  37: rustc::ty::maps::<impl rustc::ty::maps::queries::normalize_ty_after_erasing_regions<'tcx>>::try_get
  38: rustc::ty::maps::TyCtxtAt::normalize_ty_after_erasing_regions
  39: <rustc::traits::query::normalize_erasing_regions::NormalizeAfterErasingRegionsFolder<'cx, 'tcx> as rustc::ty::fold::TypeFolder<'tcx, 'tcx>>::fold_ty
  40: <rustc_data_structures::accumulate_vec::AccumulateVec<A> as core::iter::traits::FromIterator<<A as rustc_data_structures::array_vec::Array>::Element>>::from_iter
  41: rustc::ty::fold::TypeFoldable::fold_with
  42: rustc::traits::query::normalize_erasing_regions::<impl rustc::ty::context::TyCtxt<'cx, 'tcx, 'tcx>>::normalize_erasing_late_bound_regions
  43: rustc_trans::mir::block::<impl rustc_trans::mir::FunctionCx<'a, 'tcx>>::trans_terminator
  44: rustc_trans::mir::trans_mir
  45: rustc_trans::base::trans_instance
  46: rustc_trans::trans_item::MonoItemExt::define
  47: rustc_trans::base::compile_codegen_unit
  48: rustc::ty::maps::<impl rustc::ty::maps::queries::compile_codegen_unit<'tcx>>::compute_result
  49: rustc::dep_graph::graph::DepGraph::with_task_impl
  50: rustc_errors::Handler::track_diagnostics
  51: rustc::ty::maps::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::cycle_check
  52: rustc::ty::maps::<impl rustc::ty::maps::queries::compile_codegen_unit<'tcx>>::force
  53: rustc::ty::maps::<impl rustc::ty::maps::queries::compile_codegen_unit<'tcx>>::try_get
  54: rustc::ty::maps::TyCtxtAt::compile_codegen_unit
  55: rustc::ty::maps::<impl rustc::ty::context::TyCtxt<'a, 'tcx, 'lcx>>::compile_codegen_unit
  56: rustc_trans::base::trans_crate
  57: <rustc_trans::LlvmTransCrate as rustc_trans_utils::trans_crate::TransCrate>::trans_crate
  58: rustc::util::common::time
  59: rustc_driver::driver::phase_4_translate_to_llvm
  60: rustc_driver::driver::compile_input::{{closure}}
  61: <std::thread::local::LocalKey<T>>::with
  62: <std::thread::local::LocalKey<T>>::with
  63: rustc::ty::context::TyCtxt::create_and_enter
  64: rustc_driver::driver::compile_input
  65: rustc_driver::run_compiler_impl
  66: syntax::with_globals
  67: rustc_driver::run_compiler

[leoyvens]

This looks like a dupe of #49114 and should be tracked in clippy.