[INFO] fetching crate tower-limit 0.1.3...
[INFO] testing tower-limit-0.1.3 against 1.91.0 for beta-1.92-2
[INFO] extracting crate tower-limit 0.1.3 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate tower-limit 0.1.3
[INFO] finished tweaking crates.io crate tower-limit 0.1.3
[INFO] tweaked toml for crates.io crate tower-limit 0.1.3 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tower-limit 0.1.3 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 69 packages to latest compatible versions
[INFO] [stderr]       Adding futures v0.1.31 (available: v0.3.31)
[INFO] [stderr]       Adding tokio v0.1.22 (available: v1.48.0)
[INFO] [stderr]       Adding tower-layer v0.1.0 (available: v0.3.3)
[INFO] [stderr]       Adding tower-service v0.2.0 (available: v0.3.3)
[INFO] [stderr]       Adding tower-test v0.1.0 (available: v0.4.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tower-layer v0.1.0
[INFO] [stderr]   Downloaded tokio-mock-task v0.1.1
[INFO] [stderr]   Downloaded tower-service v0.2.0
[INFO] [stderr]   Downloaded tower-test v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ba29a3243ae46f1ee205dfe15704a3fadbbebecf08d549db0dfffc7d4be80b6
[INFO] running `Command { std: "docker" "start" "-a" "2ba29a3243ae46f1ee205dfe15704a3fadbbebecf08d549db0dfffc7d4be80b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ba29a3243ae46f1ee205dfe15704a3fadbbebecf08d549db0dfffc7d4be80b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ba29a3243ae46f1ee205dfe15704a3fadbbebecf08d549db0dfffc7d4be80b6", kill_on_drop: false }`
[INFO] [stdout] 2ba29a3243ae46f1ee205dfe15704a3fadbbebecf08d549db0dfffc7d4be80b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f7678493672c4b75cfabec4e7818c870ea11eb495aa78a835aba230e15632f6
[INFO] running `Command { std: "docker" "start" "-a" "1f7678493672c4b75cfabec4e7818c870ea11eb495aa78a835aba230e15632f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]    Compiling tower-service v0.2.0
[INFO] [stderr]    Compiling tokio-timer v0.2.13
[INFO] [stderr]    Compiling tower-layer v0.1.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling tower-limit v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.82s
[INFO] running `Command { std: "docker" "inspect" "1f7678493672c4b75cfabec4e7818c870ea11eb495aa78a835aba230e15632f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f7678493672c4b75cfabec4e7818c870ea11eb495aa78a835aba230e15632f6", kill_on_drop: false }`
[INFO] [stdout] 1f7678493672c4b75cfabec4e7818c870ea11eb495aa78a835aba230e15632f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a01c2b88c5b0b101de1ff2866fb7d0b96900c1a55ec66126925d04424d4f197b
[INFO] running `Command { std: "docker" "start" "-a" "a01c2b88c5b0b101de1ff2866fb7d0b96900c1a55ec66126925d04424d4f197b", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling tokio-current-thread v0.1.7
[INFO] [stderr]    Compiling tower-test v0.1.0
[INFO] [stderr]    Compiling tokio-mock-task v0.1.1
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling tower-limit v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.21s
[INFO] running `Command { std: "docker" "inspect" "a01c2b88c5b0b101de1ff2866fb7d0b96900c1a55ec66126925d04424d4f197b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a01c2b88c5b0b101de1ff2866fb7d0b96900c1a55ec66126925d04424d4f197b", kill_on_drop: false }`
[INFO] [stdout] a01c2b88c5b0b101de1ff2866fb7d0b96900c1a55ec66126925d04424d4f197b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 03fcf81a5c7cbac70c130c5c19d799983c2dcede3ce97a6e63d586bfccec0307
[INFO] running `Command { std: "docker" "start" "-a" "03fcf81a5c7cbac70c130c5c19d799983c2dcede3ce97a6e63d586bfccec0307", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tower_limit-07025a42e0a6bff3)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/concurrency.rs (/opt/rustwide/target/debug/deps/concurrency-aa2b955d68b979dd)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stderr] 
[INFO] [stderr] thread 'basic_service_limit_functionality_without_poll_ready' (26) panicked at library/core/src/panicking.rs:225:5:
[INFO] [stderr] attempted to leave type `futures::task_impl::Task` uninitialized, which is invalid
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x634f89b96042 - std::backtrace_rs::backtrace::libunwind::trace::h62f3c6bea0fedab3
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]    1:     0x634f89b96042 - std::backtrace_rs::backtrace::trace_unsynchronized::hc41aaca6c0af0bde
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]    2:     0x634f89b96042 - std::sys::backtrace::_print_fmt::h33ac2b97007106cc
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]    3:     0x634f89b96042 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h4e0a3aeea0f9c085
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]    4:     0x634f89ba620f - core::fmt::rt::Argument::fmt::h1edd6a3e00b22f10
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]    5:     0x634f89ba620f - core::fmt::write::hecf68a131630c74d
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/fmt/mod.rs:1468:25
[INFO] [stderr]    6:     0x634f89b63231 - std::io::default_write_fmt::haf8355dc2afbec95
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/io/mod.rs:639:11
[INFO] [stderr]    7:     0x634f89b63231 - std::io::Write::write_fmt::h93c9a261259c931a
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]    8:     0x634f89b6f532 - std::sys::backtrace::BacktraceLock::print::h75160192768e5621
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]    9:     0x634f89b740ff - std::panicking::default_hook::{{closure}}::h14d82797cfb1ddcb
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:301:27
[INFO] [stderr]   10:     0x634f89b73f59 - std::panicking::default_hook::h63f9bf8161c5d325
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:328:9
[INFO] [stderr]   11:     0x634f89b2281e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb8126f8384f98101
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1999:9
[INFO] [stderr]   12:     0x634f89b2281e - test::test_main_with_exit_callback::{{closure}}::hae96ae0cd2f2ce70
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:145:21
[INFO] [stderr]   13:     0x634f89b747bf - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha703f6686c81d0c6
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1999:9
[INFO] [stderr]   14:     0x634f89b747bf - std::panicking::panic_with_hook::h3173740e06bd0752
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:842:13
[INFO] [stderr]   15:     0x634f89b745e6 - std::panicking::panic_handler::{{closure}}::hbac492c61eb56a87
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:700:13
[INFO] [stderr]   16:     0x634f89b6f679 - std::sys::backtrace::__rust_end_short_backtrace::haa3eac3df9535320
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]   17:     0x634f89b579bd - __rustc[de0091b922c53d7e]::rust_begin_unwind
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:698:5
[INFO] [stderr]   18:     0x634f89bad99d - core::panicking::panic_nounwind_fmt::runtime::he6eac78ff6d199a6
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panicking.rs:117:22
[INFO] [stderr]   19:     0x634f89bad99d - core::panicking::panic_nounwind_fmt::hf2634cf9a3927743
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/intrinsics/mod.rs:2435:9
[INFO] [stderr]   20:     0x634f89bad8e2 - core::panicking::panic_nounwind::h44d0b72d63850884
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panicking.rs:225:5
[INFO] [stderr]   21:     0x634f89af2d91 - core::mem::uninitialized::h231497f41755f3f1
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/mem/mod.rs:711:9
[INFO] [stderr]   22:     0x634f89af2d91 - tokio_sync::oneshot::channel::h8b4e728406c0647f
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-sync-0.1.8/src/oneshot.rs:133:61
[INFO] [stderr]   23:     0x634f89aecccb - <tower_test::mock::Mock<T,U> as tower_service::Service<T>>::call::h8e73095016058c49
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tower-test-0.1.0/src/mock/mod.rs:141:24
[INFO] [stderr]   24:     0x634f89aee190 - <tower_limit::concurrency::service::ConcurrencyLimit<S> as tower_service::Service<Request>>::call::h5282f4dc019258ea
[INFO] [stderr]                                at /opt/rustwide/workdir/src/concurrency/service.rs:82:33
[INFO] [stderr]   25:     0x634f89ae5084 - concurrency::basic_service_limit_functionality_without_poll_ready::hdd1a23076e4c9676
[INFO] [stderr]                                at /opt/rustwide/workdir/tests/concurrency.rs:89:22
[INFO] [stderr]   26:     0x634f89ae6037 - concurrency::basic_service_limit_functionality_without_poll_ready::{{closure}}::h23b250f6cb9dbbb6
[INFO] [stderr]                                at /opt/rustwide/workdir/tests/concurrency.rs:83:58
[INFO] [stderr]   27:     0x634f89ae9ff6 - core::ops::function::FnOnce::call_once::hdcfd72989735bb1e
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   28:     0x634f89b225fb - core::ops::function::FnOnce::call_once::h8f50ae93d93b62b4
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   29:     0x634f89b225fb - test::__rust_begin_short_backtrace::h447963718d05a644
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:663:18
[INFO] [stderr]   30:     0x634f89b38235 - test::run_test_in_process::{{closure}}::hf890ba4755ca86c0
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:686:74
[INFO] [stderr]   31:     0x634f89b38235 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h31e4b2860e583faa
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stderr]   32:     0x634f89b38235 - std::panicking::catch_unwind::do_call::hec7cdbbe797e2cab
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:590:40
[INFO] [stderr]   33:     0x634f89b38235 - std::panicking::catch_unwind::h24d3b93458b5ba67
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:553:19
[INFO] [stderr]   34:     0x634f89b38235 - std::panic::catch_unwind::h46eeec7cf9c9336c
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panic.rs:359:14
[INFO] [stderr]   35:     0x634f89b38235 - test::run_test_in_process::h290de6e559006104
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:686:27
[INFO] [stderr]   36:     0x634f89b38235 - test::run_test::{{closure}}::h26eeb2c5f7e9a995
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:607:43
[INFO] [stderr]   37:     0x634f89b0ea34 - test::run_test::{{closure}}::h85af00882daabeaa
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:637:41
[INFO] [stderr]   38:     0x634f89b0ea34 - std::sys::backtrace::__rust_begin_short_backtrace::h9d9305dda51fa5f2
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:158:18
[INFO] [stderr]   39:     0x634f89b123da - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc6aada8b43f0527b
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/thread/mod.rs:559:17
[INFO] [stderr]   40:     0x634f89b123da - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::ha89fe5505c1206f5
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stderr]   41:     0x634f89b123da - std::panicking::catch_unwind::do_call::he3e0bef721d99583
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:590:40
[INFO] [stderr]   42:     0x634f89b123da - std::panicking::catch_unwind::ha8241964d3d773cd
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:553:19
[INFO] [stderr]   43:     0x634f89b123da - std::panic::catch_unwind::ha8554bc7696cae72
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panic.rs:359:14
[INFO] [stderr]   44:     0x634f89b123da - std::thread::Builder::spawn_unchecked_::{{closure}}::he06f1f62b4c90f8d
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/thread/mod.rs:557:30
[INFO] [stderr]   45:     0x634f89b123da - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha7fd20ecae19b9b9
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   46:     0x634f89b6a85f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h43642ed9c40e0ab2
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1985:9
[INFO] [stderr]   47:     0x634f89b6a85f - std::sys::thread::unix::Thread::new::thread_start::h38da0f633f090ce2
[INFO] [stderr]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/thread/unix.rs:126:17
[INFO] [stderr]   48:     0x72aca471eaa4 - <unknown>
[INFO] [stderr]   49:     0x72aca47aba64 - clone
[INFO] [stderr]   50:                0x0 - <unknown>
[INFO] [stderr] thread caused non-unwinding panic. aborting.
[INFO] [stderr] error: test failed, to rerun pass `--test concurrency`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/concurrency-aa2b955d68b979dd` (signal: 6, SIGABRT: process abort signal)
[INFO] running `Command { std: "docker" "inspect" "03fcf81a5c7cbac70c130c5c19d799983c2dcede3ce97a6e63d586bfccec0307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03fcf81a5c7cbac70c130c5c19d799983c2dcede3ce97a6e63d586bfccec0307", kill_on_drop: false }`
[INFO] [stdout] 03fcf81a5c7cbac70c130c5c19d799983c2dcede3ce97a6e63d586bfccec0307
