thread 'rustc' panicked at 'already borrowed: BorrowMutError' #670
Description
While trying to compile veloren, compilation of wayland-protocols failed with:
thread 'rustc' panicked at 'already borrowed: BorrowMutError', src/libcore/result.rs:1084:5
stack backtrace:
0: backtrace::backtrace::libunwind::trace
at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88
1: backtrace::backtrace::trace_unsynchronized
at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66
2: std::sys_common::backtrace::_print
at src/libstd/sys_common/backtrace.rs:47
3: std::sys_common::backtrace::print
at src/libstd/sys_common/backtrace.rs:36
4: std::panicking::default_hook::{{closure}}
at src/libstd/panicking.rs:200
5: std::panicking::default_hook
at src/libstd/panicking.rs:214
6: rustc::util::common::panic_hook
7: std::panicking::rust_panic_with_hook
at src/libstd/panicking.rs:481
8: std::panicking::continue_panic_fmt
at src/libstd/panicking.rs:384
9: rust_begin_unwind
at src/libstd/panicking.rs:311
10: core::panicking::panic_fmt
at src/libcore/panicking.rs:85
11: core::result::unwrap_failed
at src/libcore/result.rs:1084
12: rustc_mir::interpret::memory::Memory<M>::allocate
13: rustc_mir::const_eval::eval_body_using_ecx
14: rustc_mir::const_eval::const_eval_raw_provider
15: rustc::ty::query::__query_compute::const_eval_raw
16: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::const_eval_raw>::compute
17: rustc::dep_graph::graph::DepGraph::with_task_impl
18: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
19: rustc_mir::const_eval::const_eval_provider
20: rustc::ty::query::__query_compute::const_eval
21: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::const_eval>::compute
22: rustc::dep_graph::graph::DepGraph::with_task_impl
23: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
24: rustc_mir::const_eval::const_eval_provider
25: rustc::ty::query::__query_compute::const_eval
26: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::const_eval>::compute
27: rustc::dep_graph::graph::DepGraph::with_task_impl
28: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
29: <rustc::traits::query::normalize::QueryNormalizer as rustc::ty::fold::TypeFolder>::fold_const
30: rustc::ty::structural_impls::<impl rustc::ty::fold::TypeFoldable for &rustc::ty::TyS>::super_fold_with
31: <rustc::traits::query::normalize::QueryNormalizer as rustc::ty::fold::TypeFolder>::fold_ty
32: rustc::traits::query::normalize::<impl rustc::infer::at::At>::normalize
33: rustc::ty::context::GlobalCtxt::enter_local
34: rustc_traits::normalize_erasing_regions::normalize_ty_after_erasing_regions
35: rustc::ty::query::__query_compute::normalize_ty_after_erasing_regions
36: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::normalize_ty_after_erasing_regions>::compute
37: rustc::dep_graph::graph::DepGraph::with_task_impl
38: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
39: rustc::traits::query::normalize_erasing_regions::<impl rustc::ty::context::TyCtxt>::normalize_erasing_regions
40: <rustc::ty::layout::LayoutCx<rustc::ty::context::TyCtxt> as rustc_target::abi::LayoutOf>::layout_of
41: rustc::ty::layout::<impl rustc::ty::context::TyCtxt>::layout_of
at /rustc/60960a260f7b5c695fd0717311d72ce62dd4eb43/src/librustc/ty/layout.rs:2010
42: rustc_codegen_cranelift::constant::data_id_for_static
at src/constant.rs:196
43: rustc_codegen_cranelift::constant::define_all_allocs
at src/constant.rs:315
44: rustc_codegen_cranelift::constant::ConstantCx::finalize
at src/constant.rs:35
45: rustc_codegen_cranelift::CodegenCx<B>::finalize
at src/lib.rs:156
46: rustc_codegen_cranelift::driver::codegen_mono_items::{{closure}}
at src/driver.rs:308
47: rustc_codegen_cranelift::driver::time
at src/driver.rs:358
48: rustc_codegen_cranelift::driver::codegen_mono_items
at src/driver.rs:300
49: rustc_codegen_cranelift::driver::codegen_cgus
at src/driver.rs:287
50: rustc_codegen_cranelift::driver::run_aot
at src/driver.rs:205
51: rustc_codegen_cranelift::driver::codegen_crate
at src/driver.rs:39
52: <rustc_codegen_cranelift::CraneliftCodegenBackend as rustc_codegen_utils::codegen_backend::CodegenBackend>::codegen_crate
at src/lib.rs:202
53: rustc::util::common::time
54: rustc_interface::passes::start_codegen
55: rustc::ty::context::tls::enter_global
56: rustc_interface::passes::BoxedGlobalCtxt::access::{{closure}}
57: rustc_interface::passes::create_global_ctxt::{{closure}}
58: rustc_interface::passes::BoxedGlobalCtxt::enter
59: rustc_interface::queries::Query<T>::compute
60: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::ongoing_codegen
61: rustc_interface::interface::run_compiler_in_existing_thread_pool
62: std::thread::local::LocalKey<T>::with
63: syntax::with_globals
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
query stack during panic:
#0 [const_eval_raw] const-evaluating `wayland_client::sys::protocol_interfaces::wl_surface_requests::{{constant}}#0`
#1 [const_eval] const-evaluating + checking `wayland_client::sys::protocol_interfaces::wl_surface_requests::{{constant}}#0`
#2 [const_eval] const-evaluating + checking `wayland_client::sys::protocol_interfaces::wl_surface_requests::{{constant}}#0`
#3 [normalize_ty_after_erasing_regions] normalizing `ParamEnvAnd { param_env: ParamEnv { caller_bounds: [], reveal: All, def_id: None }, value: [wayland_sys::common::wl_message; _] }`
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 1.38.0-nightly (60960a260 2019-08-12) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z always-encode-mir -Z codegen-backend=/home/bjorn/Documenten/cg_clif/target/debug/librustc_codegen_cranelift.so -C opt-level=2 -C debuginfo=2 -C debug-assertions=on -C overflow-checks=off -C panic=abort -C debuginfo=2 --crate-type lib
note: some of the compiler flags provided by cargo are hidden
error: Could not compile `wayland-protocols`.