[INFO] fetching crate messagebus 0.5.2...
[INFO] checking messagebus-0.5.2 against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] extracting crate messagebus 0.5.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate messagebus 0.5.2 on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate messagebus 0.5.2
[INFO] finished tweaking crates.io crate messagebus 0.5.2
[INFO] tweaked toml for crates.io crate messagebus 0.5.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate messagebus 0.5.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 240ba39343e4e240bab1bfd870fee47bc6d36e73767ae036d728eb8c92f60222
[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" "240ba39343e4e240bab1bfd870fee47bc6d36e73767ae036d728eb8c92f60222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "240ba39343e4e240bab1bfd870fee47bc6d36e73767ae036d728eb8c92f60222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "240ba39343e4e240bab1bfd870fee47bc6d36e73767ae036d728eb8c92f60222", kill_on_drop: false }`
[INFO] [stdout] 240ba39343e4e240bab1bfd870fee47bc6d36e73767ae036d728eb8c92f60222
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d3313a0b8e2c914da68d0326f5a6121dc771af8e25bc2b8648584484794bdbb
[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" "7d3313a0b8e2c914da68d0326f5a6121dc771af8e25bc2b8648584484794bdbb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking futures-sink v0.3.11
[INFO] [stderr]     Checking futures-core v0.3.11
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-io v0.3.11
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking futures-channel v0.3.11
[INFO] [stderr]     Checking futures-task v0.3.11
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling tokio v1.1.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-queue v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking crossbeam v0.8.0
[INFO] [stderr]    Compiling futures-macro v0.3.11
[INFO] [stderr]    Compiling tokio-macros v1.0.0
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]     Checking futures-util v0.3.11
[INFO] [stderr]     Checking futures-executor v0.3.11
[INFO] [stderr]     Checking futures v0.3.11
[INFO] [stderr]     Checking messagebus v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr] thread 'rustc' panicked at 'Box<Any>', /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/std/src/panic.rs:59:5
[INFO] [stdout] error: internal compiler error: compiler/rustc_mir/src/transform/generator.rs:751:13: Broken MIR: generator contains type Pin<Box<dyn futures::Future<Output = ()>>> in MIR, but typeck only knows about for<'r, 's, 't0, 't1, 't2, 't3, 't4, 't5> {ResumeTy, T, &'r mut tokio::sync::mpsc::Receiver<Box<(dyn for<'t6> FnOnce(&'t6 mut T) -> Pin<Box<dyn futures::Future<Output = ()>>> + std::marker::Send + 's)>>, tokio::sync::mpsc::Receiver<Box<(dyn for<'t6> FnOnce(&'t6 mut T) -> Pin<Box<dyn futures::Future<Output = ()>>> + std::marker::Send + 't0)>>, impl futures::Future, (), Box<(dyn for<'t6> FnOnce(&'t6 mut T) -> Pin<Box<dyn futures::Future<Output = ()>>> + std::marker::Send + 't3)>, &'t4 mut T, Pin<Box<(dyn futures::Future<Output = ()> + 't5)>>}
[INFO] [stdout]    --> src/untyped.rs:146:52
[INFO] [stdout]     |
[INFO] [stdout] 146 |               futures::executor::block_on(async move {
[INFO] [stdout]     |  ____________________________________________________^
[INFO] [stdout] 147 | |                 let mut obj = builder();
[INFO] [stdout] 148 | |
[INFO] [stdout] 149 | |                 loop {
[INFO] [stdout] ...   |
[INFO] [stdout] 157 | |                 }
[INFO] [stdout] 158 | |             });
[INFO] [stdout]     | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x7f8004f20dd0 - std::backtrace_rs::backtrace::libunwind::trace::hec7eaac9435d3512
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]    1:     0x7f8004f20dd0 - std::backtrace_rs::backtrace::trace_unsynchronized::h42791b8fa12b7daa
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]    2:     0x7f8004f20dd0 - std::sys_common::backtrace::_print_fmt::h3da3ebe04fb665a8
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]    3:     0x7f8004f20dd0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he40bcdde3c4491cd
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]    4:     0x7f8004f9205f - core::fmt::write::h2c729149c08098ab
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/core/src/fmt/mod.rs:1094:17
[INFO] [stderr]    5:     0x7f8004f15865 - std::io::Write::write_fmt::h28e0f2f58b8d7b7e
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/std/src/io/mod.rs:1580:15
[INFO] [stderr]    6:     0x7f8004f249bb - std::sys_common::backtrace::_print::h7f0223b1e3d898fc
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]    7:     0x7f8004f249bb - std::sys_common::backtrace::print::h58edd634a14c2d4c
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]    8:     0x7f8004f249bb - std::panicking::default_hook::{{closure}}::h71657a7591430164
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/std/src/panicking.rs:208:50
[INFO] [stderr]    9:     0x7f8004f2449d - std::panicking::default_hook::hcdf4eb5db072c85b
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/std/src/panicking.rs:225:9
[INFO] [stderr]   10:     0x7f80056e37cd - rustc_driver::report_ice::hc702a08d9fb7377c
[INFO] [stderr]   11:     0x7f7ff59a1bf3 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h639245338120297d
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/alloc/src/boxed.rs:1560:9
[INFO] [stderr]   12:     0x7f7ff5993dd6 - proc_macro::bridge::client::<impl proc_macro::bridge::Bridge>::enter::{{closure}}::{{closure}}::h54def22ba4eba293
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/proc_macro/src/bridge/client.rs:320:21
[INFO] [stderr]   13:     0x7f8004f250d0 - std::panicking::rust_panic_with_hook::hfb91e961ffb5b8e0
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/std/src/panicking.rs:595:17
[INFO] [stderr]   14:     0x7f800601544e - std::panicking::begin_panic::{{closure}}::h24a38702b45ac0f3
[INFO] [stderr]   15:     0x7f8006015189 - std::sys_common::backtrace::__rust_end_short_backtrace::h02cc30df948cb652
[INFO] [stderr]   16:     0x7f80060153a2 - std::panicking::begin_panic::h4dd79645ccae3b6e
[INFO] [stderr]   17:     0x7f8005fa47d0 - std::panic::panic_any::hb6abb086932facc4
[INFO] [stderr]   18:     0x7f8005f9f925 - rustc_errors::HandlerInner::span_bug::hd47e97195754211a
[INFO] [stderr]   19:     0x7f8005f9fd33 - rustc_errors::Handler::span_bug::ha07d3f2efbc4b3d3
[INFO] [stderr]   20:     0x7f8005f3f90b - rustc_middle::ty::context::tls::with_opt::h41357ac587925078
[INFO] [stderr]   21:     0x7f8005f40280 - rustc_middle::util::bug::opt_span_bug_fmt::hdf5251129308f472
[INFO] [stderr]   22:     0x7f8005f4024c - rustc_middle::util::bug::span_bug_fmt::h6df431584eb135c1
[INFO] [stderr]   23:     0x7f8007708f2a - <rustc_mir::transform::generator::StateTransform as rustc_mir::transform::MirPass>::run_pass::h35fb8f3bebb5fa76
[INFO] [stderr]   24:     0x7f8006ccac05 - rustc_mir::transform::run_passes::hadd0ed6897143b9e
[INFO] [stderr]   25:     0x7f800776cdb0 - rustc_mir::transform::optimized_mir::h39ed0b27b4aefc95
[INFO] [stderr]   26:     0x7f8006ae06ef - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::h8092114f6c04d11b
[INFO] [stderr]   27:     0x7f8006abc00c - rustc_data_structures::stack::ensure_sufficient_stack::h0fec7e4f57a493ad
[INFO] [stderr]   28:     0x7f8006a7df70 - rustc_query_system::query::plumbing::force_query_with_job::h18c0a204e19f48b1
[INFO] [stderr]   29:     0x7f8006a5c491 - rustc_query_system::query::plumbing::get_query_impl::h7b8f88aa3b9abc9b
[INFO] [stderr]   30:     0x7f8006ad098a - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::optimized_mir::h10cbe90dbbffd1ad
[INFO] [stderr]   31:     0x7f8006de17bf - rustc_metadata::rmeta::encoder::EncodeContext::encode_crate_root::h6c8fc5ec2eb1aca3
[INFO] [stderr]   32:     0x7f800780bbb9 - rustc_metadata::rmeta::encoder::encode_metadata_impl::h1e5610af05591ef3
[INFO] [stderr]   33:     0x7f800781b401 - rustc_data_structures::sync::join::he037a5382f7b2964
[INFO] [stderr]   34:     0x7f800781054e - rustc_metadata::rmeta::decoder::cstore_impl::<impl rustc_middle::middle::cstore::CrateStore for rustc_metadata::creader::CStore>::encode_metadata::h80d669b724ffba8e
[INFO] [stderr]   35:     0x7f8007a28289 - rustc_middle::ty::context::TyCtxt::encode_metadata::h4f743868421bfc46
[INFO] [stderr]   36:     0x7f800719d2be - rustc_interface::passes::QueryContext::enter::hcd73d7d93779570e
[INFO] [stderr]   37:     0x7f80071a6076 - rustc_interface::queries::Queries::ongoing_codegen::h74f3ebc4a4e04394
[INFO] [stderr]   38:     0x7f8007161876 - rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter::h022bc5d96316a497
[INFO] [stderr]   39:     0x7f80071607c4 - rustc_span::with_source_map::h71765ec8b8fd9951
[INFO] [stderr]   40:     0x7f8007162811 - rustc_interface::interface::create_compiler_and_run::hb7fa0da3b5c16631
[INFO] [stderr]   41:     0x7f800717c0c8 - scoped_tls::ScopedKey<T>::set::he6d088ee8831445a
[INFO] [stderr]   42:     0x7f800717c5e4 - std::sys_common::backtrace::__rust_begin_short_backtrace::hab4e36ec9faa9780
[INFO] [stderr]   43:     0x7f800717fdf5 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h32361ced26b14e7a
[INFO] [stderr]   44:     0x7f8004f34fe3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6bc35b6a67165211
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/alloc/src/boxed.rs:1546:9
[INFO] [stderr]   45:     0x7f8004f34fe3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h22a1030555589216
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/alloc/src/boxed.rs:1546:9
[INFO] [stderr]   46:     0x7f8004f34fe3 - std::sys::unix::thread::Thread::new::thread_start::h729365a01fb88184
[INFO] [stderr]                                at /rustc/7b3565da729099dbe807466fcd118fb2815986e0/library/std/src/sys/unix/thread.rs:71:17
[INFO] [stderr]   47:     0x7f8004e51609 - start_thread
[INFO] [stderr]   48:     0x7f8004d65293 - clone
[INFO] [stderr]   49:                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 1.53.0-nightly (7b3565da7 2021-04-03) 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 [optimized_mir] optimizing MIR for `untyped::<impl at src/untyped.rs:136:1: 174:2>::new::{closure#0}::{closure#0}`
[INFO] [stderr] end of query stack
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `messagebus`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "7d3313a0b8e2c914da68d0326f5a6121dc771af8e25bc2b8648584484794bdbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d3313a0b8e2c914da68d0326f5a6121dc771af8e25bc2b8648584484794bdbb", kill_on_drop: false }`
[INFO] [stdout] 7d3313a0b8e2c914da68d0326f5a6121dc771af8e25bc2b8648584484794bdbb