[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 try#fc4ba03ef77ca5018fb78a097d3b924d30f15bfc+target=i686-unknown-linux-musl for musl_upgrade_1_2_take3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnorthpole79%2Ftcp_comms" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/northpole79/tcp_comms on toolchain fc4ba03ef77ca5018fb78a097d3b924d30f15bfc
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d396c9a32aca3265b95ec89e3ad42fc6d5ba1dbfdffe3b7d67fe4e7c71b8b4e5
[INFO] running `Command { std: "docker" "start" "-a" "d396c9a32aca3265b95ec89e3ad42fc6d5ba1dbfdffe3b7d67fe4e7c71b8b4e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d396c9a32aca3265b95ec89e3ad42fc6d5ba1dbfdffe3b7d67fe4e7c71b8b4e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d396c9a32aca3265b95ec89e3ad42fc6d5ba1dbfdffe3b7d67fe4e7c71b8b4e5", kill_on_drop: false }`
[INFO] [stdout] d396c9a32aca3265b95ec89e3ad42fc6d5ba1dbfdffe3b7d67fe4e7c71b8b4e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTDOCFLAGS=--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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "build" "--frozen" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 7e0f91c135c84d63e1b256bc7fac8f9a2ada9d56def9bff9f0ed927cc6287e85
[INFO] running `Command { std: "docker" "start" "-a" "7e0f91c135c84d63e1b256bc7fac8f9a2ada9d56def9bff9f0ed927cc6287e85", 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 0.30s
[INFO] running `Command { std: "docker" "inspect" "7e0f91c135c84d63e1b256bc7fac8f9a2ada9d56def9bff9f0ed927cc6287e85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e0f91c135c84d63e1b256bc7fac8f9a2ada9d56def9bff9f0ed927cc6287e85", kill_on_drop: false }`
[INFO] [stdout] 7e0f91c135c84d63e1b256bc7fac8f9a2ada9d56def9bff9f0ed927cc6287e85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTDOCFLAGS=--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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "test" "--frozen" "--no-run" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] c767c8cbcb4774439baafffaadb3ef2be7c203df0fb6c5587964aa28894eb58f
[INFO] running `Command { std: "docker" "start" "-a" "c767c8cbcb4774439baafffaadb3ef2be7c203df0fb6c5587964aa28894eb58f", 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 0.45s
[INFO] running `Command { std: "docker" "inspect" "c767c8cbcb4774439baafffaadb3ef2be7c203df0fb6c5587964aa28894eb58f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c767c8cbcb4774439baafffaadb3ef2be7c203df0fb6c5587964aa28894eb58f", kill_on_drop: false }`
[INFO] [stdout] c767c8cbcb4774439baafffaadb3ef2be7c203df0fb6c5587964aa28894eb58f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTDOCFLAGS=--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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "test" "--frozen" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] caee417d911972e858e5463093fbcf90b58b80f8a075fc1b909a98bd14cf3df0
[INFO] running `Command { std: "docker" "start" "-a" "caee417d911972e858e5463093fbcf90b58b80f8a075fc1b909a98bd14cf3df0", 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 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/i686-unknown-linux-musl/debug/deps/tcp_comms-017968048c800747)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test unit_tests::it_works ... ok
[INFO] [stdout] test unit_tests::network_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 in use" }', src/server.rs:39:56
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:  0x80c5bc1 - std::backtrace_rs::backtrace::libunwind::trace::h5f291319ef5c6762
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:  0x80c5bc1 - std::backtrace_rs::backtrace::trace_unsynchronized::h96ca96ef06a343d3
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:  0x80c5bc1 - std::sys_common::backtrace::_print_fmt::h9ecddad7ef420251
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/sys_common/backtrace.rs:65:5
[INFO] [stdout]    3:  0x80c5bc1 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h7345cc970529ac34
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:  0x8106f3c - core::fmt::write::hf580cd49f879cb74
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/fmt/mod.rs:1208:17
[INFO] [stdout]    5:  0x80c179b - std::io::Write::write_fmt::hceb49ab886ea57c9
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/io/mod.rs:1682:15
[INFO] [stdout]    6:  0x80c59c6 - std::sys_common::backtrace::_print::h8b6713f1e30cd3b1
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    7:  0x80c59c6 - std::sys_common::backtrace::print::h228371403e861751
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    8:  0x80c75a5 - std::panicking::default_hook::{{closure}}::h6da55f6f475e59d6
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:267:22
[INFO] [stdout]    9:  0x80c72a5 - std::panicking::default_hook::h8f14cf6f2f2f52d8
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:283:9
[INFO] [stdout]   10:  0x80a352c - core::ops::function::Fn::call::h9b26c25f04212ebd
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/ops/function.rs:161:5
[INFO] [stdout]   11:  0x8099a89 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h0b6006386399b354
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/alloc/src/boxed.rs:2032:9
[INFO] [stdout]   12:  0x8099a89 - test::test_main::{{closure}}::hf462dccab4831d1f
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/test/src/lib.rs:135:21
[INFO] [stdout]   13:  0x80c7ce4 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h9163b46de7e7a7ba
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/alloc/src/boxed.rs:2032:9
[INFO] [stdout]   14:  0x80c7ce4 - std::panicking::rust_panic_with_hook::h2f79ffe424d88114
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:692:13
[INFO] [stdout]   15:  0x80c7a9c - std::panicking::begin_panic_handler::{{closure}}::h59ef6a1246219cbe
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:579:13
[INFO] [stdout]   16:  0x80c603a - std::sys_common::backtrace::__rust_end_short_backtrace::h3d3587da31656282
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/sys_common/backtrace.rs:137:18
[INFO] [stdout]   17:  0x80c7773 - rust_begin_unwind
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:575:5
[INFO] [stdout]   18:  0x804c790 - core::panicking::panic_fmt::h40e949315ccf1c11
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/panicking.rs:64:14
[INFO] [stdout]   19:  0x804cb5d - core::result::unwrap_failed::hfad931015b9eef7f
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/result.rs:1791:5
[INFO] [stdout]   20:  0x805ccad - core::result::Result<T,E>::unwrap::hf6d7da1db639c08b
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/result.rs:1113:23
[INFO] [stdout]   21:  0x8069862 - tcp_comms::server::handle_accept::hae595e0c4fae98ff
[INFO] [stdout]                        at /opt/rustwide/workdir/src/server.rs:39:20
[INFO] [stdout]   22:  0x80697bb - tcp_comms::server::start::{{closure}}::hd56b0c960235ab73
[INFO] [stdout]                        at /opt/rustwide/workdir/src/server.rs:32:9
[INFO] [stdout]   23:  0x805203b - std::sys_common::backtrace::__rust_begin_short_backtrace::hce0efbb650faabbe
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/sys_common/backtrace.rs:121:18
[INFO] [stdout]   24:  0x805843b - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h147720a43e828cab
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/thread/mod.rs:550:17
[INFO] [stdout]   25:  0x805aa3b - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h46bb605399b7c6b9
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   26:  0x8068047 - std::panicking::try::do_call::h39a19a15424c1717
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:483:40
[INFO] [stdout]   27:  0x806841c - __rust_try
[INFO] [stdout]   28:  0x8067f3c - std::panicking::try::hd43718c1ebc5f4f5
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:447:19
[INFO] [stdout]   29:  0x806b3eb - std::panic::catch_unwind::ha0e0ea6d0bf52ac5
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panic.rs:137:14
[INFO] [stdout]   30:  0x805826b - std::thread::Builder::spawn_unchecked_::{{closure}}::he0055f01da149857
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/thread/mod.rs:549:30
[INFO] [stdout]   31:  0x8052dde - core::ops::function::FnOnce::call_once{{vtable.shim}}::h23b363e92f9ec6ac
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/ops/function.rs:507:5
[INFO] [stdout]   32:  0x80cb8ad - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hb6157d95beb62c18
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/alloc/src/boxed.rs:2000:9
[INFO] [stdout]   33:  0x80cb8ad - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h710bd3383b288449
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/alloc/src/boxed.rs:2000:9
[INFO] [stdout]   34:  0x80cb8ad - std::sys::unix::thread::Thread::new::thread_start::ha4036db4cbfe1239
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/sys/unix/thread.rs:108:17
[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:  0x80c5bc1 - std::backtrace_rs::backtrace::libunwind::trace::h5f291319ef5c6762
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:  0x80c5bc1 - std::backtrace_rs::backtrace::trace_unsynchronized::h96ca96ef06a343d3
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:  0x80c5bc1 - std::sys_common::backtrace::_print_fmt::h9ecddad7ef420251
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/sys_common/backtrace.rs:65:5
[INFO] [stdout]    3:  0x80c5bc1 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h7345cc970529ac34
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:  0x8106f3c - core::fmt::write::hf580cd49f879cb74
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/fmt/mod.rs:1208:17
[INFO] [stdout]    5:  0x80c179b - std::io::Write::write_fmt::hceb49ab886ea57c9
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/io/mod.rs:1682:15
[INFO] [stdout]    6:  0x80c59c6 - std::sys_common::backtrace::_print::h8b6713f1e30cd3b1
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    7:  0x80c59c6 - std::sys_common::backtrace::print::h228371403e861751
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    8:  0x80c75a5 - std::panicking::default_hook::{{closure}}::h6da55f6f475e59d6
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:267:22
[INFO] [stdout]    9:  0x80c72a5 - std::panicking::default_hook::h8f14cf6f2f2f52d8
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:283:9
[INFO] [stdout]   10:  0x80a352c - core::ops::function::Fn::call::h9b26c25f04212ebd
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/ops/function.rs:161:5
[INFO] [stdout]   11:  0x8099a89 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h0b6006386399b354
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/alloc/src/boxed.rs:2032:9
[INFO] [stdout]   12:  0x8099a89 - test::test_main::{{closure}}::hf462dccab4831d1f
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/test/src/lib.rs:135:21
[INFO] [stdout]   13:  0x80c7ce4 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h9163b46de7e7a7ba
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/alloc/src/boxed.rs:2032:9
[INFO] [stdout]   14:  0x80c7ce4 - std::panicking::rust_panic_with_hook::h2f79ffe424d88114
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:692:13
[INFO] [stdout]   15:  0x80c7a9c - std::panicking::begin_panic_handler::{{closure}}::h59ef6a1246219cbe
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:579:13
[INFO] [stdout]   16:  0x80c603a - std::sys_common::backtrace::__rust_end_short_backtrace::h3d3587da31656282
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/sys_common/backtrace.rs:137:18
[INFO] [stdout]   17:  0x80c7773 - rust_begin_unwind
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:575:5
[INFO] [stdout]   18:  0x804c790 - core::panicking::panic_fmt::h40e949315ccf1c11
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/panicking.rs:64:14
[INFO] [stdout]   19:  0x804cb5d - core::result::unwrap_failed::hfad931015b9eef7f
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/result.rs:1791:5
[INFO] [stdout]   20:  0x805c86d - core::result::Result<T,E>::unwrap::h49e05417ac7686ce
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/result.rs:1113:23
[INFO] [stdout]   21:  0x8061aec - tcp_comms::unit_tests::server_works::h419f069923eece97
[INFO] [stdout]                        at /opt/rustwide/workdir/src/unit_tests.rs:39:23
[INFO] [stdout]   22:  0x80619d7 - tcp_comms::unit_tests::server_works::{{closure}}::h318fd796f8c0b5a5
[INFO] [stdout]                        at /opt/rustwide/workdir/src/unit_tests.rs:36:19
[INFO] [stdout]   23:  0x8052e4d - core::ops::function::FnOnce::call_once::h06908c13996795c5
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/ops/function.rs:507:5
[INFO] [stdout]   24:  0x809e4ce - core::ops::function::FnOnce::call_once::hecc3c5fab6cb88cd
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/ops/function.rs:507:5
[INFO] [stdout]   25:  0x809e4ce - test::__rust_begin_short_backtrace::h18e977d49f646cd0
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/test/src/lib.rs:657:18
[INFO] [stdout]   26:  0x8071470 - test::run_test::{{closure}}::ha39325b57d1cb768
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/test/src/lib.rs:648:30
[INFO] [stdout]   27:  0x8071470 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h5040e45b1e845123
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/ops/function.rs:507:5
[INFO] [stdout]   28:  0x809d647 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h26c70f40318b0360
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/alloc/src/boxed.rs:2000:9
[INFO] [stdout]   29:  0x809d647 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hfa679c02d5269ea1
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   30:  0x809d647 - std::panicking::try::do_call::h5bc1d3d4ab3d7acd
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:483:40
[INFO] [stdout]   31:  0x809d647 - std::panicking::try::h0d0734d848512873
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:447:19
[INFO] [stdout]   32:  0x809d647 - std::panic::catch_unwind::h1b17ff745af6bff3
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panic.rs:137:14
[INFO] [stdout]   33:  0x809d647 - test::run_test_in_process::h7545f915ef03cbbe
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/test/src/lib.rs:680:27
[INFO] [stdout]   34:  0x809d647 - test::run_test::run_test_inner::{{closure}}::he5f64ab41218f776
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/test/src/lib.rs:574:39
[INFO] [stdout]   35:  0x806bcda - test::run_test::run_test_inner::{{closure}}::h74ad460a34a68702
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/test/src/lib.rs:601:37
[INFO] [stdout]   36:  0x806bcda - std::sys_common::backtrace::__rust_begin_short_backtrace::h3e8f4d074e786dcf
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/sys_common/backtrace.rs:121:18
[INFO] [stdout]   37:  0x80712eb - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h9aa166e39b65b836
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/thread/mod.rs:550:17
[INFO] [stdout]   38:  0x80712eb - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h49c1c6ee61f36b13
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   39:  0x80712eb - std::panicking::try::do_call::h6c0758e2b02f2859
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:483:40
[INFO] [stdout]   40:  0x80712eb - std::panicking::try::h3684f436e633cc77
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panicking.rs:447:19
[INFO] [stdout]   41:  0x80712eb - std::panic::catch_unwind::hc37306cbaab1bf43
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/panic.rs:137:14
[INFO] [stdout]   42:  0x80712eb - std::thread::Builder::spawn_unchecked_::{{closure}}::h6a4963ec3f0e3be6
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/thread/mod.rs:549:30
[INFO] [stdout]   43:  0x80712eb - core::ops::function::FnOnce::call_once{{vtable.shim}}::h0914fb32932929dc
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/core/src/ops/function.rs:507:5
[INFO] [stdout]   44:  0x80cb8ad - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hb6157d95beb62c18
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/alloc/src/boxed.rs:2000:9
[INFO] [stdout]   45:  0x80cb8ad - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h710bd3383b288449
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/alloc/src/boxed.rs:2000:9
[INFO] [stdout]   46:  0x80cb8ad - std::sys::unix::thread::Thread::new::thread_start::ha4036db4cbfe1239
[INFO] [stdout]                        at /rustc/fc4ba03ef77ca5018fb78a097d3b924d30f15bfc/library/std/src/sys/unix/thread.rs:108:17
[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 0.50s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "caee417d911972e858e5463093fbcf90b58b80f8a075fc1b909a98bd14cf3df0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caee417d911972e858e5463093fbcf90b58b80f8a075fc1b909a98bd14cf3df0", kill_on_drop: false }`
[INFO] [stdout] caee417d911972e858e5463093fbcf90b58b80f8a075fc1b909a98bd14cf3df0