[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 master#1ddedbaa5919b7b3e70d984660e21e844c615c97 for pr-128400
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnorthpole79%2Ftcp_comms" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/northpole79/tcp_comms on toolchain 1ddedbaa5919b7b3e70d984660e21e844c615c97
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "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-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58bf325b22038e4167afc84f40841d446544ea93e1c829b8662b3d965d1393c8
[INFO] running `Command { std: "docker" "start" "-a" "58bf325b22038e4167afc84f40841d446544ea93e1c829b8662b3d965d1393c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58bf325b22038e4167afc84f40841d446544ea93e1c829b8662b3d965d1393c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58bf325b22038e4167afc84f40841d446544ea93e1c829b8662b3d965d1393c8", kill_on_drop: false }`
[INFO] [stdout] 58bf325b22038e4167afc84f40841d446544ea93e1c829b8662b3d965d1393c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 174ab7403cf766b3be1cf85716f2f933b508c40717ecb7ba88c78c56f2f93fc3
[INFO] running `Command { std: "docker" "start" "-a" "174ab7403cf766b3be1cf85716f2f933b508c40717ecb7ba88c78c56f2f93fc3", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling tcp_comms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Arc` and `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` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "174ab7403cf766b3be1cf85716f2f933b508c40717ecb7ba88c78c56f2f93fc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "174ab7403cf766b3be1cf85716f2f933b508c40717ecb7ba88c78c56f2f93fc3", kill_on_drop: false }`
[INFO] [stdout] 174ab7403cf766b3be1cf85716f2f933b508c40717ecb7ba88c78c56f2f93fc3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20418cb7a6c5e9bcf60b5b5079712150215cc5ccfebafd7801804905347bfc5e
[INFO] running `Command { std: "docker" "start" "-a" "20418cb7a6c5e9bcf60b5b5079712150215cc5ccfebafd7801804905347bfc5e", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling tcp_comms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Arc` and `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] [stdout] warning: unused imports: `Arc` and `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` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "20418cb7a6c5e9bcf60b5b5079712150215cc5ccfebafd7801804905347bfc5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20418cb7a6c5e9bcf60b5b5079712150215cc5ccfebafd7801804905347bfc5e", kill_on_drop: false }`
[INFO] [stdout] 20418cb7a6c5e9bcf60b5b5079712150215cc5ccfebafd7801804905347bfc5e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 299788684a1f772add0e24621b3c97bd9d847570f611abda08246124270c1b16
[INFO] running `Command { std: "docker" "start" "-a" "299788684a1f772add0e24621b3c97bd9d847570f611abda08246124270c1b16", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr] warning: unused imports: `Arc` and `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 (run `cargo fix --lib -p tcp_comms` to apply 1 suggestion)
[INFO] [stderr] warning: `tcp_comms` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tcp_comms-948cbc15c0d0bf59)
[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 src/server.rs:39:56:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 98, kind: AddrInUse, message: "Address already in use" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55ba4a748b05 - std::backtrace_rs::backtrace::libunwind::trace::hdfc9607bf31dbc86
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x55ba4a748b05 - std::backtrace_rs::backtrace::trace_unsynchronized::h835e0ca3083fcb54
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55ba4a748b05 - std::sys::backtrace::_print_fmt::hf81d1bed8dde1f05
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x55ba4a748b05 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h0e21387e4dc195e8
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x55ba4a770cbb - core::fmt::rt::Argument::fmt::hf0a2360aea19729b
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x55ba4a770cbb - core::fmt::write::h76a391ed15942408
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/fmt/mod.rs:1178:21
[INFO] [stdout]    6:     0x55ba4a74576f - std::io::Write::write_fmt::h3a6701c05eae4e21
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/io/mod.rs:1823:15
[INFO] [stdout]    7:     0x55ba4a74a321 - std::sys::backtrace::BacktraceLock::print::hfbac027926ddf935
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x55ba4a74a321 - std::panicking::default_hook::{{closure}}::h901010a60b64ccc3
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:266:22
[INFO] [stdout]    9:     0x55ba4a749ec8 - std::panicking::default_hook::had7425277af071c7
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:290:9
[INFO] [stdout]   10:     0x55ba4a71568a - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h0e74b18ddebb72fa
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2162:9
[INFO] [stdout]   11:     0x55ba4a71568a - test::test_main::{{closure}}::he27b357a2172d646
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:132:21
[INFO] [stdout]   12:     0x55ba4a74ac2f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha2e26086c015e62d
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2162:9
[INFO] [stdout]   13:     0x55ba4a74ac2f - std::panicking::rust_panic_with_hook::hac0e92610e1e4d1b
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:805:13
[INFO] [stdout]   14:     0x55ba4a74a857 - std::panicking::begin_panic_handler::{{closure}}::h1fb6563ca25c0091
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:671:13
[INFO] [stdout]   15:     0x55ba4a748fc9 - std::sys::backtrace::__rust_end_short_backtrace::he90d714ee124ec57
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x55ba4a74a4e4 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:662:5
[INFO] [stdout]   17:     0x55ba4a76f6d3 - core::panicking::panic_fmt::h2c076b2ed9eeb82c
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/panicking.rs:74:14
[INFO] [stdout]   18:     0x55ba4a76fb06 - core::result::unwrap_failed::h0be6dd1a77884bef
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/result.rs:1679:5
[INFO] [stdout]   19:     0x55ba4a6c7a68 - core::result::Result<T,E>::unwrap::h66472538710326d7
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/result.rs:1102:23
[INFO] [stdout]   20:     0x55ba4a6c7a68 - tcp_comms::server::handle_accept::h9b23324aea5e4bce
[INFO] [stdout]                                at /opt/rustwide/workdir/src/server.rs:39:20
[INFO] [stdout]   21:     0x55ba4a6c79b3 - tcp_comms::server::start::{{closure}}::he06c403a4e206484
[INFO] [stdout]                                at /opt/rustwide/workdir/src/server.rs:32:9
[INFO] [stdout]   22:     0x55ba4a6c4b63 - std::sys::backtrace::__rust_begin_short_backtrace::h44329cb8a956c060
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   23:     0x55ba4a6ddd13 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hec5d62ddcc627e73
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/thread/mod.rs:524:17
[INFO] [stdout]   24:     0x55ba4a6ca9a3 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4c897cd801454f8f
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   25:     0x55ba4a6c4fa0 - std::panicking::try::do_call::hc5995fb82765c017
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:554:40
[INFO] [stdout]   26:     0x55ba4a6ddffb - __rust_try
[INFO] [stdout]   27:     0x55ba4a6dd285 - std::panicking::try::h2a05eadf68240fd6
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:518:19
[INFO] [stdout]   28:     0x55ba4a6dd285 - std::panic::catch_unwind::h37d85ea431e9276d
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panic.rs:345:14
[INFO] [stdout]   29:     0x55ba4a6dd285 - std::thread::Builder::spawn_unchecked_::{{closure}}::hd53906c942fc8e68
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/thread/mod.rs:523:30
[INFO] [stdout]   30:     0x55ba4a6c547e - core::ops::function::FnOnce::call_once{{vtable.shim}}::h76fd1fd480909908
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   31:     0x55ba4a74ed9b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h186f3f12fe64acb3
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2148:9
[INFO] [stdout]   32:     0x55ba4a74ed9b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h58b0e3febdb462cc
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2148:9
[INFO] [stdout]   33:     0x55ba4a74ed9b - std::sys::pal::unix::thread::Thread::new::thread_start::h146ca4d6d16f256f
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   34:     0x7fb561ef0ac3 - <unknown>
[INFO] [stdout]   35:     0x7fb561f81a04 - clone
[INFO] [stdout]   36:                0x0 - <unknown>
[INFO] [stdout] thread 'unit_tests::server_works' panicked at src/unit_tests.rs:39:60:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 111, kind: ConnectionRefused, message: "Connection refused" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55ba4a748b05 - std::backtrace_rs::backtrace::libunwind::trace::hdfc9607bf31dbc86
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x55ba4a748b05 - std::backtrace_rs::backtrace::trace_unsynchronized::h835e0ca3083fcb54
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55ba4a748b05 - std::sys::backtrace::_print_fmt::hf81d1bed8dde1f05
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x55ba4a748b05 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h0e21387e4dc195e8
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x55ba4a770cbb - core::fmt::rt::Argument::fmt::hf0a2360aea19729b
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x55ba4a770cbb - core::fmt::write::h76a391ed15942408
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/fmt/mod.rs:1178:21
[INFO] [stdout]    6:     0x55ba4a74576f - std::io::Write::write_fmt::h3a6701c05eae4e21
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/io/mod.rs:1823:15
[INFO] [stdout]    7:     0x55ba4a74a321 - std::sys::backtrace::BacktraceLock::print::hfbac027926ddf935
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x55ba4a74a321 - std::panicking::default_hook::{{closure}}::h901010a60b64ccc3
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:266:22
[INFO] [stdout]    9:     0x55ba4a749ec8 - std::panicking::default_hook::had7425277af071c7
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:290:9
[INFO] [stdout]   10:     0x55ba4a71568a - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h0e74b18ddebb72fa
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2162:9
[INFO] [stdout]   11:     0x55ba4a71568a - test::test_main::{{closure}}::he27b357a2172d646
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:132:21
[INFO] [stdout]   12:     0x55ba4a74ac2f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha2e26086c015e62d
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2162:9
[INFO] [stdout]   13:     0x55ba4a74ac2f - std::panicking::rust_panic_with_hook::hac0e92610e1e4d1b
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:805:13
[INFO] [stdout]   14:     0x55ba4a74a857 - std::panicking::begin_panic_handler::{{closure}}::h1fb6563ca25c0091
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:671:13
[INFO] [stdout]   15:     0x55ba4a748fc9 - std::sys::backtrace::__rust_end_short_backtrace::he90d714ee124ec57
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x55ba4a74a4e4 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:662:5
[INFO] [stdout]   17:     0x55ba4a76f6d3 - core::panicking::panic_fmt::h2c076b2ed9eeb82c
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/panicking.rs:74:14
[INFO] [stdout]   18:     0x55ba4a76fb06 - core::result::unwrap_failed::h0be6dd1a77884bef
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/result.rs:1679:5
[INFO] [stdout]   19:     0x55ba4a6d8081 - core::result::Result<T,E>::unwrap::hadcc81b5355cc716
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/result.rs:1102:23
[INFO] [stdout]   20:     0x55ba4a6d8081 - tcp_comms::unit_tests::server_works::hfd40b9b6278ebb30
[INFO] [stdout]                                at /opt/rustwide/workdir/src/unit_tests.rs:39:23
[INFO] [stdout]   21:     0x55ba4a6d7f57 - tcp_comms::unit_tests::server_works::{{closure}}::haeee60bf83618c22
[INFO] [stdout]                                at /opt/rustwide/workdir/src/unit_tests.rs:36:18
[INFO] [stdout]   22:     0x55ba4a6c57b6 - core::ops::function::FnOnce::call_once::hebaf74ff0afa6faa
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x55ba4a71a15b - core::ops::function::FnOnce::call_once::hca6bde12b6a630f1
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55ba4a71a15b - test::__rust_begin_short_backtrace::h12810d14a702ebbc
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:620:18
[INFO] [stdout]   25:     0x55ba4a719a25 - test::run_test_in_process::{{closure}}::h59541574124f7772
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:643:60
[INFO] [stdout]   26:     0x55ba4a719a25 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h21b81f6278222813
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x55ba4a719a25 - std::panicking::try::do_call::h95caa0508e76e60a
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:554:40
[INFO] [stdout]   28:     0x55ba4a719a25 - std::panicking::try::ha936e1facd3a2c2c
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:518:19
[INFO] [stdout]   29:     0x55ba4a719a25 - std::panic::catch_unwind::h5528768c35d92b58
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panic.rs:345:14
[INFO] [stdout]   30:     0x55ba4a719a25 - test::run_test_in_process::h90d0fae4cc0656ab
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:643:27
[INFO] [stdout]   31:     0x55ba4a719a25 - test::run_test::{{closure}}::hd832ed1086168438
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:564:43
[INFO] [stdout]   32:     0x55ba4a6df2f4 - test::run_test::{{closure}}::h9fadb9f2ff3418ff
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:594:41
[INFO] [stdout]   33:     0x55ba4a6df2f4 - std::sys::backtrace::__rust_begin_short_backtrace::h83762f6f2409a243
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   34:     0x55ba4a6e2ac2 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h30150ce916fdd544
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/thread/mod.rs:524:17
[INFO] [stdout]   35:     0x55ba4a6e2ac2 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hc325bc97006a5368
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x55ba4a6e2ac2 - std::panicking::try::do_call::h3c463856408c67a4
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:554:40
[INFO] [stdout]   37:     0x55ba4a6e2ac2 - std::panicking::try::h692f72559df6d3bf
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:518:19
[INFO] [stdout]   38:     0x55ba4a6e2ac2 - std::panic::catch_unwind::h1dcc0ad4c36d774e
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panic.rs:345:14
[INFO] [stdout]   39:     0x55ba4a6e2ac2 - std::thread::Builder::spawn_unchecked_::{{closure}}::hc95846b45d8ce7ce
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/thread/mod.rs:523:30
[INFO] [stdout]   40:     0x55ba4a6e2ac2 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h802463e6db21440a
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x55ba4a74ed9b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h186f3f12fe64acb3
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2148:9
[INFO] [stdout]   42:     0x55ba4a74ed9b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h58b0e3febdb462cc
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2148:9
[INFO] [stdout]   43:     0x55ba4a74ed9b - std::sys::pal::unix::thread::Thread::new::thread_start::h146ca4d6d16f256f
[INFO] [stdout]                                at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   44:     0x7fb561ef0ac3 - <unknown>
[INFO] [stdout]   45:     0x7fb561f81a04 - clone
[INFO] [stdout]   46:                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 0.50s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "299788684a1f772add0e24621b3c97bd9d847570f611abda08246124270c1b16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "299788684a1f772add0e24621b3c97bd9d847570f611abda08246124270c1b16", kill_on_drop: false }`
[INFO] [stdout] 299788684a1f772add0e24621b3c97bd9d847570f611abda08246124270c1b16
[INFO] testing northpole79/tcp_comms against try#33f1d8bb92813a1bfc23c093c9f443ab09290307 for pr-128400
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnorthpole79%2Ftcp_comms" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/northpole79/tcp_comms on toolchain 33f1d8bb92813a1bfc23c093c9f443ab09290307
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "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-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a08d1ff64a95f4ae3ac6003b9a7d170723b5b8e341c2bb5975c3eb9e30127654
[INFO] running `Command { std: "docker" "start" "-a" "a08d1ff64a95f4ae3ac6003b9a7d170723b5b8e341c2bb5975c3eb9e30127654", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a08d1ff64a95f4ae3ac6003b9a7d170723b5b8e341c2bb5975c3eb9e30127654", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a08d1ff64a95f4ae3ac6003b9a7d170723b5b8e341c2bb5975c3eb9e30127654", kill_on_drop: false }`
[INFO] [stdout] a08d1ff64a95f4ae3ac6003b9a7d170723b5b8e341c2bb5975c3eb9e30127654
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc8591ad5556cfdb432039404b725a37c8ac1c4017eced9763345ae92fa14cfa
[INFO] running `Command { std: "docker" "start" "-a" "dc8591ad5556cfdb432039404b725a37c8ac1c4017eced9763345ae92fa14cfa", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling tcp_comms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Arc` and `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` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "dc8591ad5556cfdb432039404b725a37c8ac1c4017eced9763345ae92fa14cfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc8591ad5556cfdb432039404b725a37c8ac1c4017eced9763345ae92fa14cfa", kill_on_drop: false }`
[INFO] [stdout] dc8591ad5556cfdb432039404b725a37c8ac1c4017eced9763345ae92fa14cfa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eaac804dfb490c672ee75cfb54c76bddded55331297082eb88bb65ad2a146e41
[INFO] running `Command { std: "docker" "start" "-a" "eaac804dfb490c672ee75cfb54c76bddded55331297082eb88bb65ad2a146e41", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling tcp_comms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Arc` and `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] [stdout] warning: unused imports: `Arc` and `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` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "eaac804dfb490c672ee75cfb54c76bddded55331297082eb88bb65ad2a146e41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eaac804dfb490c672ee75cfb54c76bddded55331297082eb88bb65ad2a146e41", kill_on_drop: false }`
[INFO] [stdout] eaac804dfb490c672ee75cfb54c76bddded55331297082eb88bb65ad2a146e41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d303f07e08ee5f5bdd02f7f481d29ea52e77aad26613c0c7c1ed3ed8509f26af
[INFO] running `Command { std: "docker" "start" "-a" "d303f07e08ee5f5bdd02f7f481d29ea52e77aad26613c0c7c1ed3ed8509f26af", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr] warning: unused imports: `Arc` and `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 (run `cargo fix --lib -p tcp_comms` to apply 1 suggestion)
[INFO] [stderr] warning: `tcp_comms` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tcp_comms-948cbc15c0d0bf59)
[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 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.50s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tcp_comms
[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] running `Command { std: "docker" "inspect" "d303f07e08ee5f5bdd02f7f481d29ea52e77aad26613c0c7c1ed3ed8509f26af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d303f07e08ee5f5bdd02f7f481d29ea52e77aad26613c0c7c1ed3ed8509f26af", kill_on_drop: false }`
[INFO] [stdout] d303f07e08ee5f5bdd02f7f481d29ea52e77aad26613c0c7c1ed3ed8509f26af