[INFO] cloning repository https://github.com/nlopes/arq
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nlopes/arq" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnlopes%2Farq", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnlopes%2Farq'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 45cc996a464afbe8d5e2bb8b78a3e0d16d154b66
[INFO] checking nlopes/arq against try#9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c for pr-79472
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnlopes%2Farq" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nlopes/arq on toolchain 9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5/source/.cargo/config
[INFO] started tweaking git repo https://github.com/nlopes/arq
[INFO] finished tweaking git repo https://github.com/nlopes/arq
[INFO] tweaked toml for git repo https://github.com/nlopes/arq written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pbkdf2 v0.6.0
[INFO] [stderr]   Downloaded crypto-mac v0.10.0
[INFO] [stderr]   Downloaded hmac v0.10.1
[INFO] [stderr]   Downloaded aesni v0.10.0
[INFO] [stderr]   Downloaded block-modes v0.7.0
[INFO] [stderr]   Downloaded cipher v0.2.5
[INFO] [stderr]   Downloaded hex-literal v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 146ff201b7289cad66cd20de30ee857d412fee12fdb68f612e331fcc7001857e
[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" "146ff201b7289cad66cd20de30ee857d412fee12fdb68f612e331fcc7001857e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "146ff201b7289cad66cd20de30ee857d412fee12fdb68f612e331fcc7001857e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "146ff201b7289cad66cd20de30ee857d412fee12fdb68f612e331fcc7001857e", kill_on_drop: false }`
[INFO] [stdout] 146ff201b7289cad66cd20de30ee857d412fee12fdb68f612e331fcc7001857e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=forbid" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] efb37082f7233980b2cb67541ce2761ff2e4415cb8ffbe79580636e3a357f6ec
[INFO] running `Command { std: "docker" "start" "-a" "efb37082f7233980b2cb67541ce2761ff2e4415cb8ffbe79580636e3a357f6ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking xml-rs v0.8.3
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]    Compiling hex-literal v0.3.1
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling lz4-sys v1.9.2
[INFO] [stderr]    Compiling ring v0.16.19
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking cipher v0.2.5
[INFO] [stderr]     Checking crypto-mac v0.10.0
[INFO] [stderr]     Checking aesni v0.10.0
[INFO] [stderr]     Checking block-modes v0.7.0
[INFO] [stderr]     Checking sha2 v0.9.2
[INFO] [stderr]     Checking hmac v0.10.1
[INFO] [stderr]     Checking sha-1 v0.9.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stdout] error: enable aes and ssse3 target features, e.g. with RUSTFLAGS="-C target-feature=+aes,+ssse3" environment variable. For x86 target arch additionally enable sse2 target feature.
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/aesni-0.10.0/src/target_checks.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | / compile_error!(
[INFO] [stdout] 14 | |     "enable aes and ssse3 target features, e.g. with \
[INFO] [stdout] 15 | |     RUSTFLAGS=\"-C target-feature=+aes,+ssse3\" environment variable. \
[INFO] [stdout] 16 | |     For x86 target arch additionally enable sse2 target feature."
[INFO] [stdout] 17 | | );
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] thread 'rustc' panicked at 'assertion failed: `(left == right)`
[INFO] [stderr]   left: `DefId(0:1268 ~ ring[f394]::digest::sha2::)`,
[INFO] [stderr]  right: `DefId(0:1269 ~ ring[f394]::digest::sha2::::GFp_sha256_block_data_order)`', compiler/rustc_middle/src/hir/map/collector.rs:227:13
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x7fa4ca94ee30 - std::backtrace_rs::backtrace::libunwind::trace::h746c3e9529d524bc
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]    1:     0x7fa4ca94ee30 - std::backtrace_rs::backtrace::trace_unsynchronized::h86340908ff889faa
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]    2:     0x7fa4ca94ee30 - std::sys_common::backtrace::_print_fmt::h43f85f9b18230404
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]    3:     0x7fa4ca94ee30 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc132ae1a5b5aa7cd
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]    4:     0x7fa4ca9c1bfc - core::fmt::write::hdf023a0036d2a25f
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/core/src/fmt/mod.rs:1078:17
[INFO] [stderr]    5:     0x7fa4ca9409a2 - std::io::Write::write_fmt::h8580846154bcb66a
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/io/mod.rs:1519:15
[INFO] [stderr]    6:     0x7fa4ca952a95 - std::sys_common::backtrace::_print::h7ee55fed88d107a3
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]    7:     0x7fa4ca952a95 - std::sys_common::backtrace::print::h54a7d3e52a524177
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]    8:     0x7fa4ca952a95 - std::panicking::default_hook::{{closure}}::h60921e857bf55a40
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:208:50
[INFO] [stderr]    9:     0x7fa4ca9525ea - std::panicking::default_hook::hf0f9afb1017317fc
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:225:9
[INFO] [stderr]   10:     0x7fa4cb1e2e88 - rustc_driver::report_ice::ha25ae86a5858acc3
[INFO] [stderr]   11:     0x7fa4ca953396 - std::panicking::rust_panic_with_hook::h8d66bf42b407aaea
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:595:17
[INFO] [stderr]   12:     0x7fa4ca952eb7 - std::panicking::begin_panic_handler::{{closure}}::hde71edcd925d0c5e
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:497:13
[INFO] [stderr]   13:     0x7fa4ca94f2ec - std::sys_common::backtrace::__rust_end_short_backtrace::h8a3c7d6cea578919
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]   14:     0x7fa4ca952e19 - rust_begin_unwind
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:493:5
[INFO] [stderr]   15:     0x7fa4ca9bdfe1 - core::panicking::panic_fmt::h20225113c4a2f8fd
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/core/src/panicking.rs:92:14
[INFO] [stderr]   16:     0x7fa4cdf75692 - rustc_middle::hir::map::collector::NodeCollector::insert_entry::hca669a46f64fdb43
[INFO] [stderr]   17:     0x7fa4cdb5f1d5 - rustc_hir::intravisit::walk_item::hc46606fd2b20aa7f
[INFO] [stderr]   18:     0x7fa4cdf75b15 - <rustc_middle::hir::map::collector::NodeCollector as rustc_hir::intravisit::Visitor>::visit_item::h0f587429024a5cb5
[INFO] [stderr]   19:     0x7fa4cdb5f116 - rustc_hir::intravisit::walk_item::hc46606fd2b20aa7f
[INFO] [stderr]   20:     0x7fa4cdf75b15 - <rustc_middle::hir::map::collector::NodeCollector as rustc_hir::intravisit::Visitor>::visit_item::h0f587429024a5cb5
[INFO] [stderr]   21:     0x7fa4cdb5f116 - rustc_hir::intravisit::walk_item::hc46606fd2b20aa7f
[INFO] [stderr]   22:     0x7fa4cdf75b15 - <rustc_middle::hir::map::collector::NodeCollector as rustc_hir::intravisit::Visitor>::visit_item::h0f587429024a5cb5
[INFO] [stderr]   23:     0x7fa4cdd150b8 - rustc_middle::hir::map::index_hir::hf439917ce696bd94
[INFO] [stderr]   24:     0x7fa4ce1de396 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_eval_always_task::h8bd29a88a93658cd
[INFO] [stderr]   25:     0x7fa4cdde2a9e - rustc_data_structures::stack::ensure_sufficient_stack::h342dc757722bd1db
[INFO] [stderr]   26:     0x7fa4ce07de2f - rustc_query_system::query::plumbing::get_query_impl::hb09330ad44d3182c
[INFO] [stderr]   27:     0x7fa4cde247cd - core::ops::function::FnOnce::call_once::h5a7eb1d6379c8762
[INFO] [stderr]   28:     0x7fa4ce1e2f26 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_eval_always_task::h9f649dad743b6654
[INFO] [stderr]   29:     0x7fa4cddebc8e - rustc_data_structures::stack::ensure_sufficient_stack::h7d600bd62a1740c1
[INFO] [stderr]   30:     0x7fa4ce05630e - rustc_query_system::query::plumbing::get_query_impl::h8f65053f4158eee3
[INFO] [stderr]   31:     0x7fa4cdd122e3 - rustc_middle::hir::map::Map::expect_item::hfd87383e47c97d54
[INFO] [stderr]   32:     0x7fa4cc27832e - rustc_middle::hir::map::Map::visit_item_likes_in_module::h247672bea00725ec
[INFO] [stderr]   33:     0x7fa4cc29814c - rustc_passes::hir_id_validator::check_crate::h59836737852b1597
[INFO] [stderr]   34:     0x7fa4cb440d22 - rustc_interface::passes::analysis::h342855b4d8ce9897
[INFO] [stderr]   35:     0x7fa4cb19f9ab - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::analysis>::compute::h95ff81a8a73eaff3
[INFO] [stderr]   36:     0x7fa4cb230cd6 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_eval_always_task::h9b1ab6f92ac4abd3
[INFO] [stderr]   37:     0x7fa4cb240206 - rustc_data_structures::stack::ensure_sufficient_stack::hd767cf5f976dec26
[INFO] [stderr]   38:     0x7fa4cb1cd5a4 - rustc_query_system::query::plumbing::get_query_impl::h59cb47161047ab66
[INFO] [stderr]   39:     0x7fa4cb1a207b - rustc_interface::passes::QueryContext::enter::heace2ac35bf577de
[INFO] [stderr]   40:     0x7fa4cb23d4a5 - rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter::hcfd2504bb4e8d292
[INFO] [stderr]   41:     0x7fa4cb20b797 - rustc_span::with_source_map::hdf17fa3a4d8fe35b
[INFO] [stderr]   42:     0x7fa4cb2398cc - scoped_tls::ScopedKey<T>::set::h5dca480b178bbfab
[INFO] [stderr]   43:     0x7fa4cb2409e5 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha4cbf96baa7e4912
[INFO] [stderr]   44:     0x7fa4cb1a95ca - core::ops::function::FnOnce::call_once{{vtable.shim}}::he2d69591c700ddc8
[INFO] [stderr]   45:     0x7fa4ca96265a - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hea1090dbdcecbf5a
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/alloc/src/boxed.rs:1318:9
[INFO] [stderr]   46:     0x7fa4ca96265a - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h8d5723d3912bd325
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/alloc/src/boxed.rs:1318:9
[INFO] [stderr]   47:     0x7fa4ca96265a - std::sys::unix::thread::Thread::new::thread_start::hc17a425ca2995724
[INFO] [stderr]                                at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys/unix/thread.rs:71:17
[INFO] [stderr]   48:     0x7fa4ca87a609 - start_thread
[INFO] [stderr]   49:     0x7fa4ca78e293 - clone
[INFO] [stderr]   50:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] error: internal compiler error: unexpected panic
[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 1.50.0-nightly (9b49d8c6c 2020-11-27) 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 [index_hir] index HIR
[INFO] [stderr] #1 [hir_owner] HIR owner of `{misc#0}`
[INFO] [stderr] #2 [analysis] running analysis passes on this crate
[INFO] [stderr] end of query stack
[INFO] [stderr] error: could not compile `ring`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "efb37082f7233980b2cb67541ce2761ff2e4415cb8ffbe79580636e3a357f6ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efb37082f7233980b2cb67541ce2761ff2e4415cb8ffbe79580636e3a357f6ec", kill_on_drop: false }`
[INFO] [stdout] efb37082f7233980b2cb67541ce2761ff2e4415cb8ffbe79580636e3a357f6ec