[INFO] fetching crate libp2p-core 0.25.1...
[INFO] checking libp2p-core-0.25.1 against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] extracting crate libp2p-core 0.25.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate libp2p-core 0.25.1 on toolchain c9228570668803e3e6402770d55f23a12c9ae686
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libp2p-core 0.25.1
[INFO] finished tweaking crates.io crate libp2p-core 0.25.1
[INFO] tweaked toml for crates.io crate libp2p-core 0.25.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+c9228570668803e3e6402770d55f23a12c9ae686" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b7dfcf7c2339b58a921fd42019ff603719e6f7de587961fa2648f1ed7241c14
[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" "5b7dfcf7c2339b58a921fd42019ff603719e6f7de587961fa2648f1ed7241c14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b7dfcf7c2339b58a921fd42019ff603719e6f7de587961fa2648f1ed7241c14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b7dfcf7c2339b58a921fd42019ff603719e6f7de587961fa2648f1ed7241c14", kill_on_drop: false }`
[INFO] [stdout] 5b7dfcf7c2339b58a921fd42019ff603719e6f7de587961fa2648f1ed7241c14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+c9228570668803e3e6402770d55f23a12c9ae686" "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] fcb3562bfa56afc7b67b57ebbb2360aa0b3e449c3aca9ab93c5e810f5e521fa2
[INFO] running `Command { std: "docker" "start" "-a" "fcb3562bfa56afc7b67b57ebbb2360aa0b3e449c3aca9ab93c5e810f5e521fa2", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking futures-io v0.3.8
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking pin-project-lite v0.1.11
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking fastrand v1.4.0
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking vec-arena v1.0.0
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]     Checking nb-connect v1.0.2
[INFO] [stderr]     Checking ring v0.16.19
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]     Checking futures-lite v1.11.2
[INFO] [stderr]     Checking async-channel v1.5.1
[INFO] [stderr] thread 'rustc' panicked at 'assertion failed: `(left == right)`
[INFO] [stderr]   left: `DefId(0:1271 ~ ring[e605]::digest::sha2::)`,
[INFO] [stderr]  right: `DefId(0:1272 ~ ring[e605]::digest::sha2::::GFp_sha256_block_data_order)`', compiler/rustc_middle/src/hir/map/collector.rs:227:13
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x7fc163ef8e30 - std::backtrace_rs::backtrace::libunwind::trace::h746c3e9529d524bc
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]    1:     0x7fc163ef8e30 - std::backtrace_rs::backtrace::trace_unsynchronized::h86340908ff889faa
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]    2:     0x7fc163ef8e30 - std::sys_common::backtrace::_print_fmt::h43f85f9b18230404
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]    3:     0x7fc163ef8e30 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc132ae1a5b5aa7cd
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]    4:     0x7fc163f6bbfc - core::fmt::write::hdf023a0036d2a25f
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/core/src/fmt/mod.rs:1078:17
[INFO] [stderr]    5:     0x7fc163eea9a2 - std::io::Write::write_fmt::h8580846154bcb66a
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/std/src/io/mod.rs:1519:15
[INFO] [stderr]    6:     0x7fc163efca95 - std::sys_common::backtrace::_print::h7ee55fed88d107a3
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]    7:     0x7fc163efca95 - std::sys_common::backtrace::print::h54a7d3e52a524177
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]    8:     0x7fc163efca95 - std::panicking::default_hook::{{closure}}::h60921e857bf55a40
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/std/src/panicking.rs:208:50
[INFO] [stderr]    9:     0x7fc163efc5ea - std::panicking::default_hook::hf0f9afb1017317fc
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/std/src/panicking.rs:225:9
[INFO] [stderr]   10:     0x7fc16478cfe8 - rustc_driver::report_ice::ha25ae86a5858acc3
[INFO] [stderr]   11:     0x7fc163efd396 - std::panicking::rust_panic_with_hook::h8d66bf42b407aaea
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/std/src/panicking.rs:595:17
[INFO] [stderr]   12:     0x7fc163efceb7 - std::panicking::begin_panic_handler::{{closure}}::hde71edcd925d0c5e
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/std/src/panicking.rs:497:13
[INFO] [stderr]   13:     0x7fc163ef92ec - std::sys_common::backtrace::__rust_end_short_backtrace::h8a3c7d6cea578919
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]   14:     0x7fc163efce19 - rust_begin_unwind
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/std/src/panicking.rs:493:5
[INFO] [stderr]   15:     0x7fc163f67fe1 - core::panicking::panic_fmt::h20225113c4a2f8fd
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/core/src/panicking.rs:92:14
[INFO] [stderr]   16:     0x7fc1675291a2 - rustc_middle::hir::map::collector::NodeCollector::insert_entry::hca669a46f64fdb43
[INFO] [stderr]   17:     0x7fc167112ce5 - rustc_hir::intravisit::walk_item::hc46606fd2b20aa7f
[INFO] [stderr]   18:     0x7fc167529625 - <rustc_middle::hir::map::collector::NodeCollector as rustc_hir::intravisit::Visitor>::visit_item::h0f587429024a5cb5
[INFO] [stderr]   19:     0x7fc167112c26 - rustc_hir::intravisit::walk_item::hc46606fd2b20aa7f
[INFO] [stderr]   20:     0x7fc167529625 - <rustc_middle::hir::map::collector::NodeCollector as rustc_hir::intravisit::Visitor>::visit_item::h0f587429024a5cb5
[INFO] [stderr]   21:     0x7fc167112c26 - rustc_hir::intravisit::walk_item::hc46606fd2b20aa7f
[INFO] [stderr]   22:     0x7fc167529625 - <rustc_middle::hir::map::collector::NodeCollector as rustc_hir::intravisit::Visitor>::visit_item::h0f587429024a5cb5
[INFO] [stderr]   23:     0x7fc1672c8bc8 - rustc_middle::hir::map::index_hir::hf439917ce696bd94
[INFO] [stderr]   24:     0x7fc167791ea6 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_eval_always_task::h8bd29a88a93658cd
[INFO] [stderr]   25:     0x7fc1673965ae - rustc_data_structures::stack::ensure_sufficient_stack::h342dc757722bd1db
[INFO] [stderr]   26:     0x7fc16763193f - rustc_query_system::query::plumbing::get_query_impl::hb09330ad44d3182c
[INFO] [stderr]   27:     0x7fc1673d82dd - core::ops::function::FnOnce::call_once::h5a7eb1d6379c8762
[INFO] [stderr]   28:     0x7fc167796a36 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_eval_always_task::h9f649dad743b6654
[INFO] [stderr]   29:     0x7fc16739f79e - rustc_data_structures::stack::ensure_sufficient_stack::h7d600bd62a1740c1
[INFO] [stderr]   30:     0x7fc167609e1e - rustc_query_system::query::plumbing::get_query_impl::h8f65053f4158eee3
[INFO] [stderr]   31:     0x7fc1672c5df3 - rustc_middle::hir::map::Map::expect_item::hfd87383e47c97d54
[INFO] [stderr]   32:     0x7fc16582129e - rustc_middle::hir::map::Map::visit_item_likes_in_module::h247672bea00725ec
[INFO] [stderr]   33:     0x7fc1658410ec - rustc_passes::hir_id_validator::check_crate::h59836737852b1597
[INFO] [stderr]   34:     0x7fc1649eaa22 - rustc_interface::passes::analysis::h342855b4d8ce9897
[INFO] [stderr]   35:     0x7fc164749b2b - 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:     0x7fc1647dad76 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_eval_always_task::h9b1ab6f92ac4abd3
[INFO] [stderr]   37:     0x7fc1647ea2a6 - rustc_data_structures::stack::ensure_sufficient_stack::hd767cf5f976dec26
[INFO] [stderr]   38:     0x7fc164777704 - rustc_query_system::query::plumbing::get_query_impl::h59cb47161047ab66
[INFO] [stderr]   39:     0x7fc16474c1fb - rustc_interface::passes::QueryContext::enter::heace2ac35bf577de
[INFO] [stderr]   40:     0x7fc1647e7545 - rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter::hcfd2504bb4e8d292
[INFO] [stderr]   41:     0x7fc1647b5897 - rustc_span::with_source_map::hdf17fa3a4d8fe35b
[INFO] [stderr]   42:     0x7fc1647e396c - scoped_tls::ScopedKey<T>::set::h5dca480b178bbfab
[INFO] [stderr]   43:     0x7fc1647eaa85 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha4cbf96baa7e4912
[INFO] [stderr]   44:     0x7fc16475374a - core::ops::function::FnOnce::call_once{{vtable.shim}}::he2d69591c700ddc8
[INFO] [stderr]   45:     0x7fc163f0c65a - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hea1090dbdcecbf5a
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/alloc/src/boxed.rs:1318:9
[INFO] [stderr]   46:     0x7fc163f0c65a - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h8d5723d3912bd325
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/alloc/src/boxed.rs:1318:9
[INFO] [stderr]   47:     0x7fc163f0c65a - std::sys::unix::thread::Thread::new::thread_start::hc17a425ca2995724
[INFO] [stderr]                                at /rustc/c9228570668803e3e6402770d55f23a12c9ae686/library/std/src/sys/unix/thread.rs:71:17
[INFO] [stderr]   48:     0x7fc163e24609 - start_thread
[INFO] [stderr]   49:     0x7fc163d38293 - 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 (c92285706 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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "fcb3562bfa56afc7b67b57ebbb2360aa0b3e449c3aca9ab93c5e810f5e521fa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcb3562bfa56afc7b67b57ebbb2360aa0b3e449c3aca9ab93c5e810f5e521fa2", kill_on_drop: false }`
[INFO] [stdout] fcb3562bfa56afc7b67b57ebbb2360aa0b3e449c3aca9ab93c5e810f5e521fa2