[INFO] cloning repository https://github.com/northpole79/tcp_comms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/northpole79/tcp_comms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnorthpole79%2Ftcp_comms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnorthpole79%2Ftcp_comms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a943d47b88f905bf6ebe20c3d69d0308969d5739
[INFO] testing northpole79/tcp_comms against beta-2022-08-09 for beta-1.64-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnorthpole79%2Ftcp_comms" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/northpole79/tcp_comms on toolchain beta-2022-08-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-08-09" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/northpole79/tcp_comms
[INFO] finished tweaking git repo https://github.com/northpole79/tcp_comms
[INFO] tweaked toml for git repo https://github.com/northpole79/tcp_comms written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-08-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-08-09" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-08-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d24f34b359f0ab708b71ab61d35625aa1a0795a37a1b271908b9e94f4282a7f8
[INFO] running `Command { std: "docker" "start" "-a" "d24f34b359f0ab708b71ab61d35625aa1a0795a37a1b271908b9e94f4282a7f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d24f34b359f0ab708b71ab61d35625aa1a0795a37a1b271908b9e94f4282a7f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d24f34b359f0ab708b71ab61d35625aa1a0795a37a1b271908b9e94f4282a7f8", kill_on_drop: false }`
[INFO] [stdout] d24f34b359f0ab708b71ab61d35625aa1a0795a37a1b271908b9e94f4282a7f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-08-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80dac8894607f9277885102002ba40fcc85afd76eba094d3921036750ac968a5
[INFO] running `Command { std: "docker" "start" "-a" "80dac8894607f9277885102002ba40fcc85afd76eba094d3921036750ac968a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling tcp_comms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`
[INFO] [stdout]  --> src/server.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                 ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "80dac8894607f9277885102002ba40fcc85afd76eba094d3921036750ac968a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80dac8894607f9277885102002ba40fcc85afd76eba094d3921036750ac968a5", kill_on_drop: false }`
[INFO] [stdout] 80dac8894607f9277885102002ba40fcc85afd76eba094d3921036750ac968a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-08-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93d32e56c66ad71c57955badb69ddc6d5c62cc237ee2d7de0fd7b51fa27d363a
[INFO] running `Command { std: "docker" "start" "-a" "93d32e56c66ad71c57955badb69ddc6d5c62cc237ee2d7de0fd7b51fa27d363a", kill_on_drop: false }`
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`
[INFO] [stdout]  --> src/server.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                 ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tcp_comms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`
[INFO] [stdout]  --> src/server.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                 ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "93d32e56c66ad71c57955badb69ddc6d5c62cc237ee2d7de0fd7b51fa27d363a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93d32e56c66ad71c57955badb69ddc6d5c62cc237ee2d7de0fd7b51fa27d363a", kill_on_drop: false }`
[INFO] [stdout] 93d32e56c66ad71c57955badb69ddc6d5c62cc237ee2d7de0fd7b51fa27d363a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-08-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 31074fedd26eeb7da4ee3206b915d58d525fa5df980d5a5a375ee3527843276c
[INFO] running `Command { std: "docker" "start" "-a" "31074fedd26eeb7da4ee3206b915d58d525fa5df980d5a5a375ee3527843276c", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Arc`, `Mutex`
[INFO] [stderr]  --> src/server.rs:6:17
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::sync::{Arc, Mutex};
[INFO] [stderr]   |                 ^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `tcp_comms` (lib) generated 1 warning
[INFO] [stderr] warning: `tcp_comms` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tcp_comms-3978993528921b89)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test unit_tests::network_works ... ok
[INFO] [stdout] test unit_tests::it_works ... ok
[INFO] [stdout] test unit_tests::comm_works ... ok
[INFO] [stdout] test unit_tests::server_works ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- unit_tests::server_works stdout ----
[INFO] [stdout] thread '<unnamed>' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 98, kind: AddrInUse, message: "Address already in use" }', src/server.rs:39:56
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x560d01dae6c0 - std::backtrace_rs::backtrace::libunwind::trace::hc2aafb361b930ef6
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    1:     0x560d01dae6c0 - std::backtrace_rs::backtrace::trace_unsynchronized::h804481ad4855a013
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x560d01dae6c0 - std::sys_common::backtrace::_print_fmt::hde719312690c42c7
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stdout]    3:     0x560d01dae6c0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h3ac798ae3916ddb8
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stdout]    4:     0x560d01dd2c4c - core::fmt::write::h56d0a26c056ebf7d
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/fmt/mod.rs:1198:17
[INFO] [stdout]    5:     0x560d01da9725 - std::io::Write::write_fmt::h05e70be662867c59
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/io/mod.rs:1672:15
[INFO] [stdout]    6:     0x560d01db01e1 - std::sys_common::backtrace::_print::h157d3034d56c5f2b
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stdout]    7:     0x560d01db01e1 - std::sys_common::backtrace::print::h8711cdaccf25c72b
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stdout]    8:     0x560d01db01e1 - std::panicking::default_hook::{{closure}}::h5a65e9070c5bad88
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:295:22
[INFO] [stdout]    9:     0x560d01dafe31 - std::panicking::default_hook::h02eec242e22c1c0a
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:311:9
[INFO] [stdout]   10:     0x560d01db0883 - std::panicking::rust_panic_with_hook::hd120b75e7be84603
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:698:17
[INFO] [stdout]   11:     0x560d01db0777 - std::panicking::begin_panic_handler::{{closure}}::he7b199a96ab3ad47
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:588:13
[INFO] [stdout]   12:     0x560d01daebe4 - std::sys_common::backtrace::__rust_end_short_backtrace::h128233115a8d97ab
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stdout]   13:     0x560d01db04a2 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:584:5
[INFO] [stdout]   14:     0x560d01d34ee3 - core::panicking::panic_fmt::h9ba2fa2bf5a290c7
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/panicking.rs:142:14
[INFO] [stdout]   15:     0x560d01d34fd3 - core::result::unwrap_failed::hc9fc90d7d677f8a0
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/result.rs:1814:5
[INFO] [stdout]   16:     0x560d01d3cd60 - core::result::Result<T,E>::unwrap::h33b715e03a20d756
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/result.rs:1107:23
[INFO] [stdout]   17:     0x560d01d41adf - tcp_comms::server::handle_accept::h2be214f6f32cb5aa
[INFO] [stdout]                                at /opt/rustwide/workdir/src/server.rs:39:20
[INFO] [stdout]   18:     0x560d01d41a73 - tcp_comms::server::start::{{closure}}::h6acd848582f4809e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/server.rs:32:9
[INFO] [stdout]   19:     0x560d01d49443 - std::sys_common::backtrace::__rust_begin_short_backtrace::h999da113e77ac9ad
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stdout]   20:     0x560d01d4f303 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h31051ee2afe22b53
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/thread/mod.rs:505:17
[INFO] [stdout]   21:     0x560d01d4c313 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd94c4c8d4dbab65b
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   22:     0x560d01d40518 - std::panicking::try::do_call::h16dcbdcfebae3a49
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:492:40
[INFO] [stdout]   23:     0x560d01d421fb - __rust_try
[INFO] [stdout]   24:     0x560d01d403a6 - std::panicking::try::hb1a84585da12df3c
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:456:19
[INFO] [stdout]   25:     0x560d01d40243 - std::panic::catch_unwind::h01cee01ada270a88
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panic.rs:137:14
[INFO] [stdout]   26:     0x560d01d4f0e9 - std::thread::Builder::spawn_unchecked_::{{closure}}::hf33af6e2e94d5fb7
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/thread/mod.rs:504:30
[INFO] [stdout]   27:     0x560d01d4a51e - core::ops::function::FnOnce::call_once{{vtable.shim}}::h948e504dec78255a
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/ops/function.rs:248:5
[INFO] [stdout]   28:     0x560d01db4ec3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hafebb5a654285d1f
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/alloc/src/boxed.rs:1935:9
[INFO] [stdout]   29:     0x560d01db4ec3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd7f46a8cec019e0f
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/alloc/src/boxed.rs:1935:9
[INFO] [stdout]   30:     0x560d01db4ec3 - std::sys::unix::thread::Thread::new::thread_start::hcd40f54db19fb2e5
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   31:     0x7fb8a1e98609 - start_thread
[INFO] [stdout]   32:     0x7fb8a1c68133 - clone
[INFO] [stdout]   33:                0x0 - <unknown>
[INFO] [stdout] thread 'unit_tests::server_works' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 111, kind: ConnectionRefused, message: "Connection refused" }', src/unit_tests.rs:39:60
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x560d01dae6c0 - std::backtrace_rs::backtrace::libunwind::trace::hc2aafb361b930ef6
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    1:     0x560d01dae6c0 - std::backtrace_rs::backtrace::trace_unsynchronized::h804481ad4855a013
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x560d01dae6c0 - std::sys_common::backtrace::_print_fmt::hde719312690c42c7
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stdout]    3:     0x560d01dae6c0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h3ac798ae3916ddb8
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stdout]    4:     0x560d01dd2c4c - core::fmt::write::h56d0a26c056ebf7d
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/fmt/mod.rs:1198:17
[INFO] [stdout]    5:     0x560d01da9725 - std::io::Write::write_fmt::h05e70be662867c59
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/io/mod.rs:1672:15
[INFO] [stdout]    6:     0x560d01db01e1 - std::sys_common::backtrace::_print::h157d3034d56c5f2b
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stdout]    7:     0x560d01db01e1 - std::sys_common::backtrace::print::h8711cdaccf25c72b
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stdout]    8:     0x560d01db01e1 - std::panicking::default_hook::{{closure}}::h5a65e9070c5bad88
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:295:22
[INFO] [stdout]    9:     0x560d01dafe31 - std::panicking::default_hook::h02eec242e22c1c0a
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:311:9
[INFO] [stdout]   10:     0x560d01db0883 - std::panicking::rust_panic_with_hook::hd120b75e7be84603
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:698:17
[INFO] [stdout]   11:     0x560d01db0777 - std::panicking::begin_panic_handler::{{closure}}::he7b199a96ab3ad47
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:588:13
[INFO] [stdout]   12:     0x560d01daebe4 - std::sys_common::backtrace::__rust_end_short_backtrace::h128233115a8d97ab
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stdout]   13:     0x560d01db04a2 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:584:5
[INFO] [stdout]   14:     0x560d01d34ee3 - core::panicking::panic_fmt::h9ba2fa2bf5a290c7
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/panicking.rs:142:14
[INFO] [stdout]   15:     0x560d01d34fd3 - core::result::unwrap_failed::hc9fc90d7d677f8a0
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/result.rs:1814:5
[INFO] [stdout]   16:     0x560d01d3cf40 - core::result::Result<T,E>::unwrap::hc8f0f4d70a572795
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/result.rs:1107:23
[INFO] [stdout]   17:     0x560d01d3d649 - tcp_comms::unit_tests::server_works::h6342f92004caf760
[INFO] [stdout]                                at /opt/rustwide/workdir/src/unit_tests.rs:39:23
[INFO] [stdout]   18:     0x560d01d3d57a - tcp_comms::unit_tests::server_works::{{closure}}::h6d8f89496102f02d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/unit_tests.rs:36:1
[INFO] [stdout]   19:     0x560d01d4a5de - core::ops::function::FnOnce::call_once::h52524db8d8d0c4bb
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/ops/function.rs:248:5
[INFO] [stdout]   20:     0x560d01d86443 - core::ops::function::FnOnce::call_once::ha4000de7d74ce957
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/ops/function.rs:248:5
[INFO] [stdout]   21:     0x560d01d86443 - test::__rust_begin_short_backtrace::h97d00f92a6823310
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/test/src/lib.rs:572:5
[INFO] [stdout]   22:     0x560d01d851dc - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd4e49082446b7e36
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/alloc/src/boxed.rs:1935:9
[INFO] [stdout]   23:     0x560d01d851dc - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd614da272fbcc3e8
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   24:     0x560d01d851dc - std::panicking::try::do_call::h65eed6c45a2ac496
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:492:40
[INFO] [stdout]   25:     0x560d01d851dc - std::panicking::try::h30300676e84e25e1
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:456:19
[INFO] [stdout]   26:     0x560d01d851dc - std::panic::catch_unwind::h31f6fe9f178404d3
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panic.rs:137:14
[INFO] [stdout]   27:     0x560d01d851dc - test::run_test_in_process::h63f59f5a2354d4f0
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/test/src/lib.rs:595:18
[INFO] [stdout]   28:     0x560d01d851dc - test::run_test::run_test_inner::{{closure}}::heffd6e2eac3b867c
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/test/src/lib.rs:489:39
[INFO] [stdout]   29:     0x560d01d4f9bc - test::run_test::run_test_inner::{{closure}}::h174c7d5725c867fe
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/test/src/lib.rs:516:37
[INFO] [stdout]   30:     0x560d01d4f9bc - std::sys_common::backtrace::__rust_begin_short_backtrace::h6b256ade43a1c5e2
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stdout]   31:     0x560d01d5538f - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h574ba971f26d19c5
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/thread/mod.rs:505:17
[INFO] [stdout]   32:     0x560d01d5538f - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h1575ce15b07116dd
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   33:     0x560d01d5538f - std::panicking::try::do_call::h62958754a3d546a4
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:492:40
[INFO] [stdout]   34:     0x560d01d5538f - std::panicking::try::h4ae2dc197d04f86d
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panicking.rs:456:19
[INFO] [stdout]   35:     0x560d01d5538f - std::panic::catch_unwind::h8c834bd4e9aedde1
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/panic.rs:137:14
[INFO] [stdout]   36:     0x560d01d5538f - std::thread::Builder::spawn_unchecked_::{{closure}}::hbdaa27f018f8b53d
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/thread/mod.rs:504:30
[INFO] [stdout]   37:     0x560d01d5538f - core::ops::function::FnOnce::call_once{{vtable.shim}}::h88c4d88f89c45d7c
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/core/src/ops/function.rs:248:5
[INFO] [stdout]   38:     0x560d01db4ec3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hafebb5a654285d1f
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/alloc/src/boxed.rs:1935:9
[INFO] [stdout]   39:     0x560d01db4ec3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd7f46a8cec019e0f
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/alloc/src/boxed.rs:1935:9
[INFO] [stdout]   40:     0x560d01db4ec3 - std::sys::unix::thread::Thread::new::thread_start::hcd40f54db19fb2e5
[INFO] [stdout]                                at /rustc/56714e5332f5f21c39d710cc4a6dd279132dedd6/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   41:     0x7fb8a1e98609 - start_thread
[INFO] [stdout]   42:     0x7fb8a1c68133 - clone
[INFO] [stdout]   43:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     unit_tests::server_works
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 3 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.51s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--lib'
[INFO] running `Command { std: "docker" "inspect" "31074fedd26eeb7da4ee3206b915d58d525fa5df980d5a5a375ee3527843276c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31074fedd26eeb7da4ee3206b915d58d525fa5df980d5a5a375ee3527843276c", kill_on_drop: false }`
[INFO] [stdout] 31074fedd26eeb7da4ee3206b915d58d525fa5df980d5a5a375ee3527843276c