[INFO] fetching crate jsyc-compiler 0.1.0...
[INFO] testing jsyc-compiler-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate jsyc-compiler 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate jsyc-compiler 0.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jsyc-compiler 0.1.0
[INFO] finished tweaking crates.io crate jsyc-compiler 0.1.0
[INFO] tweaked toml for crates.io crate jsyc-compiler 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 34659a9123c6573613172875cd542b9524470376550002544f4b13c7bf8d952a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "34659a9123c6573613172875cd542b9524470376550002544f4b13c7bf8d952a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34659a9123c6573613172875cd542b9524470376550002544f4b13c7bf8d952a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34659a9123c6573613172875cd542b9524470376550002544f4b13c7bf8d952a", kill_on_drop: false }`
[INFO] [stdout] 34659a9123c6573613172875cd542b9524470376550002544f4b13c7bf8d952a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e56fe93509e08782231ef30c74ec44ac44f63f2b105687005656c55c81da58a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8e56fe93509e08782231ef30c74ec44ac44f63f2b105687005656c55c81da58a", kill_on_drop: false }`
[INFO] [stderr]    Compiling resast v0.2.1
[INFO] [stderr]    Compiling unic-ucd-ident v0.7.0
[INFO] [stderr]    Compiling combine v3.8.1
[INFO] [stderr]    Compiling backtrace v0.3.55
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling ress v0.6.3
[INFO] [stderr] thread 'rustc' panicked at 'Box<Any>', compiler/rustc_errors/src/lib.rs:958:9
[INFO] [stdout] error: internal compiler error: compiler/rustc_traits/src/normalize_erasing_regions.rs:37:32: could not fully normalize `combine::combinator::Y<<impl combine::Parser as combine::Parser>::PartialState, <impl combine::Parser as combine::Parser>::PartialState>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x7fe6e4525d80 - std::backtrace_rs::backtrace::libunwind::trace::h04d12fdcddff82aa
[INFO] [stderr]                                at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5
[INFO] [stderr]    1:     0x7fe6e4525d80 - std::backtrace_rs::backtrace::trace_unsynchronized::h1459b974b6fbe5e1
[INFO] [stderr]                                at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]    2:     0x7fe6e4525d80 - std::sys_common::backtrace::_print_fmt::h9b8396a669123d95
[INFO] [stderr]                                at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]    3:     0x7fe6e4525d80 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he009dcaaa75eed60
[INFO] [stderr]                                at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]    4:     0x7fe6e4595fdc - core::fmt::write::h77b4746b0dea1dd3
[INFO] [stderr]                                at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/core/src/fmt/mod.rs:1078:17
[INFO] [stderr]    5:     0x7fe6e4517b72 - std::io::Write::write_fmt::heb7e50902e98831c
[INFO] [stderr]                                at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/io/mod.rs:1518:15
[INFO] [stderr]    6:     0x7fe6e452ade5 - std::sys_common::backtrace::_print::h2d880c9e69a21be9
[INFO] [stderr]                                at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]    7:     0x7fe6e452ade5 - std::sys_common::backtrace::print::h5f02b1bb49f36879
[INFO] [stderr]                                at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]    8:     0x7fe6e452ade5 - std::panicking::default_hook::{{closure}}::h658e288a7a809b29
[INFO] [stderr]                                at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panicking.rs:208:50
[INFO] [stderr]    9:     0x7fe6e452aa88 - std::panicking::default_hook::hb52d73f0da9a4bb8
[INFO] [stderr]                                at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panicking.rs:227:9
[INFO] [stderr]   10:     0x7fe6e4e082a8 - rustc_driver::report_ice::h8e657e31ff6a8d97
[INFO] [stderr]   11:     0x7fe6e452b6e6 - std::panicking::rust_panic_with_hook::hfe7e1c684e3e6462
[INFO] [stderr]                                at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panicking.rs:597:17
[INFO] [stderr]   12:     0x7fe6e7eb18fd - std::panicking::begin_panic::{{closure}}::hfd29ec542f5cb729
[INFO] [stderr]   13:     0x7fe6e7eb18a6 - std::sys_common::backtrace::__rust_end_short_backtrace::hbeb2be07d4c853b2
[INFO] [stderr]   14:     0x7fe6e7e8b41f - std::panicking::begin_panic::h059e61931c3e8832
[INFO] [stderr]   15:     0x7fe6e7ec433c - rustc_errors::HandlerInner::bug::h7b09d8f8fc899c5c
[INFO] [stderr]   16:     0x7fe6e7ec2930 - rustc_errors::Handler::bug::hdf521b02c51ea9f8
[INFO] [stderr]   17:     0x7fe6e796b364 - rustc_middle::util::bug::opt_span_bug_fmt::{{closure}}::haeae53ef10d0aa50
[INFO] [stderr]   18:     0x7fe6e796b1bb - rustc_middle::ty::context::tls::with_opt::{{closure}}::hd368dd3a82a339a0
[INFO] [stderr]   19:     0x7fe6e796b162 - rustc_middle::ty::context::tls::with_opt::h00c231fa9594579b
[INFO] [stderr]   20:     0x7fe6e796b289 - rustc_middle::util::bug::opt_span_bug_fmt::h4d7c26afec8a1af8
[INFO] [stderr]   21:     0x7fe6e796b1fe - rustc_middle::util::bug::bug_fmt::h9b634cebf5220cc5
[INFO] [stderr]   22:     0x7fe6e54ca86a - rustc_infer::infer::InferCtxtBuilder::enter::heff2fea0c2ac6856
[INFO] [stderr]   23:     0x7fe6e552fe44 - rustc_traits::normalize_erasing_regions::normalize_generic_arg_after_erasing_regions::ha21e980eab6662d3
[INFO] [stderr]   24:     0x7fe6e7d65c82 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::h788fe43ab82a0991
[INFO] [stderr]   25:     0x7fe6e7b7cba8 - rustc_data_structures::stack::ensure_sufficient_stack::hfff0d622d41dc27e
[INFO] [stderr]   26:     0x7fe6e76b35f0 - rustc_query_system::query::plumbing::get_query_impl::h4d80904cbc1d8608
[INFO] [stderr]   27:     0x7fe6e7c3a83b - <rustc_middle::ty::normalize_erasing_regions::NormalizeAfterErasingRegionsFolder as rustc_middle::ty::fold::TypeFolder>::fold_ty::h8f6d57ecde8fe7c0
[INFO] [stderr]   28:     0x7fe6e65bca6d - rustc_middle::ty::util::<impl rustc_middle::ty::TyS>::needs_drop::h6a9bc3e2dbb2955b
[INFO] [stderr]   29:     0x7fe6e65e6c02 - rustc_mir::dataflow::drop_flag_effects::on_all_children_bits::on_all_children_bits::haed3e139c413c1d4
[INFO] [stderr]   30:     0x7fe6e651e15c - <rustc_mir::transform::elaborate_drops::ElaborateDrops as rustc_mir::transform::MirPass>::run_pass::he4fcb320d5b08e47
[INFO] [stderr]   31:     0x7fe6e65fff2d - rustc_mir::transform::run_passes::h32632ef671b49974
[INFO] [stderr]   32:     0x7fe6e6601b2d - rustc_mir::transform::run_post_borrowck_cleanup_passes::h7409d10700077654
[INFO] [stderr]   33:     0x7fe6e66017c1 - rustc_mir::transform::mir_drops_elaborated_and_const_checked::hb131a9f3846511b2
[INFO] [stderr]   34:     0x7fe6e65be151 - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::mir_drops_elaborated_and_const_checked>::compute::h28f9067b47ca4c77
[INFO] [stderr]   35:     0x7fe6e6451bc2 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::hd345b87d61b82492
[INFO] [stderr]   36:     0x7fe6e64292c1 - rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}::{{closure}}::{{closure}}::h17f9d57384b821f1
[INFO] [stderr]   37:     0x7fe6e62bb4a3 - rustc_query_system::query::plumbing::get_query_impl::h868da68383e6ad7d
[INFO] [stderr]   38:     0x7fe6e66022ea - rustc_mir::transform::optimized_mir::ha4141c8936898409
[INFO] [stderr]   39:     0x7fe6e6ac0462 - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::optimized_mir>::compute::h2f4c4402ed15e178
[INFO] [stderr]   40:     0x7fe6e6c642c4 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::h72d4359d27a84516
[INFO] [stderr]   41:     0x7fe6e6ba57f1 - rustc_data_structures::stack::ensure_sufficient_stack::h94c4c5e5e1a164ce
[INFO] [stderr]   42:     0x7fe6e6c34418 - rustc_query_system::query::plumbing::get_query_impl::hc827bc2cdf2769ce
[INFO] [stderr]   43:     0x7fe6e6ae27e7 - rustc_metadata::rmeta::encoder::EncodeContext::encode_optimized_mir::h7ef6d943c786ef74
[INFO] [stderr]   44:     0x7fe6e6ae6eeb - <rustc_metadata::rmeta::encoder::EncodeContext as rustc_hir::intravisit::Visitor>::visit_item::h6ed6ef8e68408455
[INFO] [stderr]   45:     0x7fe6e6b23237 - rustc_hir::hir::Crate::visit_all_item_likes::h69b18ab758480b4d
[INFO] [stderr]   46:     0x7fe6e6ade7e0 - rustc_metadata::rmeta::encoder::EncodeContext::encode_crate_root::h95821dfd9af15338
[INFO] [stderr]   47:     0x7fe6e6aeb10c - rustc_metadata::rmeta::encoder::encode_metadata_impl::hd8e398c2c0c67906
[INFO] [stderr]   48:     0x7fe6e6b9eaac - rustc_data_structures::sync::join::h07107a34029aca2d
[INFO] [stderr]   49:     0x7fe6e6cb09f0 - rustc_metadata::rmeta::decoder::cstore_impl::<impl rustc_middle::middle::cstore::CrateStore for rustc_metadata::creader::CStore>::encode_metadata::hba0d37efba69f5b5
[INFO] [stderr]   50:     0x7fe6e7a009f0 - rustc_middle::ty::context::TyCtxt::encode_metadata::h002d33053da34bdd
[INFO] [stderr]   51:     0x7fe6e504ad96 - rustc_interface::passes::QueryContext::enter::h6fcc0b93cc93f762
[INFO] [stderr]   52:     0x7fe6e5071c53 - rustc_interface::queries::Queries::ongoing_codegen::h0e2d608f0688ba39
[INFO] [stderr]   53:     0x7fe6e4e1d181 - rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter::h015c0b9cd3d80968
[INFO] [stderr]   54:     0x7fe6e4e0acae - rustc_span::with_source_map::h8a1471c6bf483f10
[INFO] [stderr]   55:     0x7fe6e4e1df52 - rustc_interface::interface::create_compiler_and_run::h0f899f680d149bdd
[INFO] [stderr]   56:     0x7fe6e4e0b85a - rustc_span::with_session_globals::h14b6d039d55051bd
[INFO] [stderr]   57:     0x7fe6e4e2404f - std::sys_common::backtrace::__rust_begin_short_backtrace::hb27f96ad58314e23
[INFO] [stderr]   58:     0x7fe6e4d8b7f8 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h321286bee8537bf3
[INFO] [stderr]   59:     0x7fe6e453a52a - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h09ff301006f1aeca
[INFO] [stderr]                                at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/alloc/src/boxed.rs:1307:9
[INFO] [stderr]   60:     0x7fe6e453a52a - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::he79488c8f00b5f31
[INFO] [stderr]                                at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/alloc/src/boxed.rs:1307:9
[INFO] [stderr]   61:     0x7fe6e453a52a - std::sys::unix::thread::Thread::new::thread_start::h587efff279c68ba7
[INFO] [stderr]                                at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/sys/unix/thread.rs:71:17
[INFO] [stderr]   62:     0x7fe6e4456609 - start_thread
[INFO] [stderr]   63:     0x7fe6e436a293 - clone
[INFO] [stderr]   64:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] note: the compiler unexpectedly panicked. this is a bug.
[INFO] [stderr] 
[INFO] [stderr] note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
[INFO] [stderr] 
[INFO] [stderr] note: rustc 1.49.0 (e1884a8e3 2020-12-29) running on x86_64-unknown-linux-gnu
[INFO] [stderr] 
[INFO] [stderr] note: compiler flags: -C embed-bitcode=no -C debuginfo=2 --crate-type lib
[INFO] [stderr] 
[INFO] [stderr] note: some of the compiler flags provided by cargo are hidden
[INFO] [stderr] 
[INFO] [stderr] query stack during panic:
[INFO] [stderr] #0 [normalize_generic_arg_after_erasing_regions] normalizing `combine::combinator::Y<<impl combine::Parser as combine::Parser>::PartialState, <impl combine::Parser as combine::Parser>::PartialState>`
[INFO] [stderr] #1 [mir_drops_elaborated_and_const_checked] elaborating drops for `<tokens::token<I> as combine::Parser>::parse_mode_impl`
[INFO] [stderr] #2 [optimized_mir] optimizing MIR for `<tokens::token<I> as combine::Parser>::parse_mode_impl`
[INFO] [stderr] end of query stack
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ress`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "8e56fe93509e08782231ef30c74ec44ac44f63f2b105687005656c55c81da58a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e56fe93509e08782231ef30c74ec44ac44f63f2b105687005656c55c81da58a", kill_on_drop: false }`
[INFO] [stdout] 8e56fe93509e08782231ef30c74ec44ac44f63f2b105687005656c55c81da58a