[INFO] fetching crate stratum-server 2.0.0...
[INFO] testing stratum-server-2.0.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate stratum-server 2.0.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate stratum-server 2.0.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stratum-server 2.0.0
[INFO] finished tweaking crates.io crate stratum-server 2.0.0
[INFO] tweaked toml for crates.io crate stratum-server 2.0.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2227e30e535599382e9a84430f056c03159dae36b31957ff13b05f5b0bafa99e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2227e30e535599382e9a84430f056c03159dae36b31957ff13b05f5b0bafa99e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2227e30e535599382e9a84430f056c03159dae36b31957ff13b05f5b0bafa99e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2227e30e535599382e9a84430f056c03159dae36b31957ff13b05f5b0bafa99e", kill_on_drop: false }`
[INFO] [stdout] 2227e30e535599382e9a84430f056c03159dae36b31957ff13b05f5b0bafa99e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0bedb08c46509370bde9466eb3b3fb0dbeeb23f4b598d91fcab420f2086ad009
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0bedb08c46509370bde9466eb3b3fb0dbeeb23f4b598d91fcab420f2086ad009", kill_on_drop: false }`
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[INFO] [stderr]    Compiling async-io v1.1.10
[INFO] [stderr]    Compiling async-executor v1.3.0
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling ghash v0.3.0
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling regex v1.4.1
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[INFO] [stderr]    Compiling byte-pool v0.2.2
[INFO] [stderr]    Compiling aes-gcm v0.6.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling async-global-executor v1.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
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[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling futures-macro v0.3.6
[INFO] [stderr]    Compiling async-trait v0.1.41
[INFO] [stderr]    Compiling async-std v1.6.5
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]    Compiling thiserror v1.0.21
[INFO] [stderr]    Compiling pin-project v0.4.27
[INFO] [stderr]    Compiling futures-util v0.3.6
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling futures-executor v0.3.6
[INFO] [stderr]    Compiling futures v0.3.6
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling serde_qs v0.7.0
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling femme v2.1.1
[INFO] [stderr]    Compiling async-sse v4.0.1
[INFO] [stderr]    Compiling async-h1 v2.1.2
[INFO] [stderr]    Compiling tide v0.12.0
[INFO] [stderr]    Compiling stratum-server v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 30s
[INFO] running `Command { std: "docker" "inspect" "0bedb08c46509370bde9466eb3b3fb0dbeeb23f4b598d91fcab420f2086ad009", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bedb08c46509370bde9466eb3b3fb0dbeeb23f4b598d91fcab420f2086ad009", kill_on_drop: false }`
[INFO] [stdout] 0bedb08c46509370bde9466eb3b3fb0dbeeb23f4b598d91fcab420f2086ad009
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c27fd5aa38b8502488fd5dc884a529a68925526f2cd45c502f9f02fc6669a90a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c27fd5aa38b8502488fd5dc884a529a68925526f2cd45c502f9f02fc6669a90a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling half v1.6.0
[INFO] [stderr]    Compiling oorandom v11.1.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rayon v1.4.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling plotters v0.2.15
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling bstr v0.2.13
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling tinytemplate v1.1.0
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling rayon-core v1.8.1
[INFO] [stderr]    Compiling portpicker v0.1.0
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stderr]    Compiling stratum-server v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `async_std::net::TcpStream`
[INFO] [stdout]  --> tests/basic_server_websocket_test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use async_std::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `async_std::prelude::FutureExt`
[INFO] [stdout]  --> tests/basic_server_websocket_test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use async_std::prelude::FutureExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::io::AsyncWriteExt`
[INFO] [stdout]  --> tests/basic_server_websocket_test.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use futures::io::AsyncWriteExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::SinkExt`
[INFO] [stdout]  --> tests/basic_server_websocket_test.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::SinkExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> tests/basic_server_websocket_test.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stratum_server::StratumServer`
[INFO] [stdout]  --> tests/basic_server_websocket_test.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use stratum_server::StratumServer;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StratumResult`
[INFO] [stdout]   --> tests/basic_server_websocket_test.rs:10:50
[INFO] [stdout]    |
[INFO] [stdout] 10 | use stratum_server::{Connection, StratumRequest, StratumResult};
[INFO] [stdout]    |                                                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_port`
[INFO] [stdout]  --> tests/common.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub async fn find_port() -> u16 {
[INFO] [stdout]   |              ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StratumResult`
[INFO] [stdout]  --> tests/basic_server_tcp_test.rs:7:50
[INFO] [stdout]   |
[INFO] [stdout] 7 | use stratum_server::{Connection, StratumRequest, StratumResult};
[INFO] [stdout]   |                                                  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/basic_server_tcp_test.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         server.start().await;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/basic_server_tcp_test.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         stream.write_all(msg.as_bytes()).await;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/basic_server_tcp_test.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         stream.write_all(b"\n").await;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 21.15s
[INFO] running `Command { std: "docker" "inspect" "c27fd5aa38b8502488fd5dc884a529a68925526f2cd45c502f9f02fc6669a90a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c27fd5aa38b8502488fd5dc884a529a68925526f2cd45c502f9f02fc6669a90a", kill_on_drop: false }`
[INFO] [stdout] c27fd5aa38b8502488fd5dc884a529a68925526f2cd45c502f9f02fc6669a90a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 358d9a577010b682add9e9da196d25674caede6bf8f55b4e0ae165b7c6b0c061
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "358d9a577010b682add9e9da196d25674caede6bf8f55b4e0ae165b7c6b0c061", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `async_std::net::TcpStream`
[INFO] [stderr]  --> tests/basic_server_websocket_test.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use async_std::net::TcpStream;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `async_std::prelude::FutureExt`
[INFO] [stderr]  --> tests/basic_server_websocket_test.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use async_std::prelude::FutureExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::io::AsyncWriteExt`
[INFO] [stderr]  --> tests/basic_server_websocket_test.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use futures::io::AsyncWriteExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::SinkExt`
[INFO] [stderr]  --> tests/basic_server_websocket_test.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use futures::SinkExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]  --> tests/basic_server_websocket_test.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::time::Duration;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `stratum_server::StratumServer`
[INFO] [stderr]  --> tests/basic_server_websocket_test.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use stratum_server::StratumServer;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `StratumResult`
[INFO] [stderr]   --> tests/basic_server_websocket_test.rs:10:50
[INFO] [stderr]    |
[INFO] [stderr] 10 | use stratum_server::{Connection, StratumRequest, StratumResult};
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_port`
[INFO] [stderr]  --> tests/common.rs:3:14
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub async fn find_port() -> u16 {
[INFO] [stderr]   |              ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `StratumResult`
[INFO] [stderr]  --> tests/basic_server_tcp_test.rs:7:50
[INFO] [stderr]   |
[INFO] [stderr] 7 | use stratum_server::{Connection, StratumRequest, StratumResult};
[INFO] [stderr]   |                                                  ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> tests/basic_server_tcp_test.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |         server.start().await;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> tests/basic_server_tcp_test.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |         stream.write_all(msg.as_bytes()).await;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> tests/basic_server_tcp_test.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |         stream.write_all(b"\n").await;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/stratum_server-9e10e71012629ace
[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
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/basic_server_tcp_test-556bd58377661b02
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test basic_server ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- basic_server stdout ----
[INFO] [stdout] thread 'basic_server' panicked at 'No ports free', tests/common.rs:4:24
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55ed707134c0 - std::backtrace_rs::backtrace::libunwind::trace::h577ea05e9ca4629a
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stdout]    1:     0x55ed707134c0 - std::backtrace_rs::backtrace::trace_unsynchronized::h50b9b72b84c7dd56
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stdout]    2:     0x55ed707134c0 - std::sys_common::backtrace::_print_fmt::h6541cf9823837fac
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:79
[INFO] [stdout]    3:     0x55ed707134c0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf64fbff071026df5
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:58
[INFO] [stdout]    4:     0x55ed7073a35c - core::fmt::write::h9ddafa4860d8adff
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/fmt/mod.rs:1082
[INFO] [stdout]    5:     0x55ed7000c1b5 - std::io::Write::write_fmt::h50a71e2460ce07da
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/io/mod.rs:1514
[INFO] [stdout]    6:     0x55ed7070a451 - std::io::impls::<impl std::io::Write for alloc::boxed::Box<W>>::write_fmt::h9bbd3fed8160d0d2
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/io/impls.rs:176
[INFO] [stdout]    7:     0x55ed70715970 - std::sys_common::backtrace::_print::ha25f9ff5080d886d
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:61
[INFO] [stdout]    8:     0x55ed70715970 - std::sys_common::backtrace::print::h213e8aa8dc5405c0
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:48
[INFO] [stdout]    9:     0x55ed70715970 - std::panicking::default_hook::{{closure}}::h6482fae49ef9d963
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:200
[INFO] [stdout]   10:     0x55ed70715666 - std::panicking::default_hook::he30ad7589e0970f9
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:216
[INFO] [stdout]   11:     0x55ed70715fd3 - std::panicking::rust_panic_with_hook::haa1ed36ada4ffb03
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:569
[INFO] [stdout]   12:     0x55ed70715ba9 - std::panicking::begin_panic_handler::{{closure}}::h7001af1bb21aeaeb
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:476
[INFO] [stdout]   13:     0x55ed7071394c - std::sys_common::backtrace::__rust_end_short_backtrace::h39910f557f5f2367
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:153
[INFO] [stdout]   14:     0x55ed70715b69 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:475
[INFO] [stdout]   15:     0x55ed707381d1 - core::panicking::panic_fmt::h4e2659771ebc78eb
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/panicking.rs:85
[INFO] [stdout]   16:     0x55ed70737f63 - core::option::expect_failed::hd5a1da3a6b6bbb34
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/option.rs:1213
[INFO] [stdout]   17:     0x55ed6ff7fb4e - core::option::Option<T>::expect::he750a3852aa491c1
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/option.rs:333
[INFO] [stdout]   18:     0x55ed6ff4fa92 - basic_server_tcp_test::common::find_port::{{closure}}::h5976f34de4e55dfd
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/common.rs:4
[INFO] [stdout]   19:     0x55ed6ffbc83b - <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h20361faf1d6fca3a
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/future/mod.rs:79
[INFO] [stdout]   20:     0x55ed7000a9d1 - basic_server_tcp_test::basic_server::{{closure}}::h531ebff62013593b
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/basic_server_tcp_test.rs:42
[INFO] [stdout]   21:     0x55ed6ffbda89 - <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h5c26769b25568396
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/future/mod.rs:79
[INFO] [stdout]   22:     0x55ed6ff98419 - <async_std::task::builder::SupportTaskLocals<F> as core::future::future::Future>::poll::{{closure}}::h832f937441b848c4
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-std-1.6.5/src/task/builder.rs:199
[INFO] [stdout]   23:     0x55ed6ffd2393 - async_std::task::task_locals_wrapper::TaskLocalsWrapper::set_current::{{closure}}::h0ac412b505910454
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-std-1.6.5/src/task/task_locals_wrapper.rs:60
[INFO] [stdout]   24:     0x55ed6ff6a9c1 - std::thread::local::LocalKey<T>::try_with::hae3c9cc37f130a55
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/thread/local.rs:265
[INFO] [stdout]   25:     0x55ed6ff68f9d - std::thread::local::LocalKey<T>::with::hb21b8bd676e58d73
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/thread/local.rs:241
[INFO] [stdout]   26:     0x55ed6ffd1fa8 - async_std::task::task_locals_wrapper::TaskLocalsWrapper::set_current::h46a877dd89b9d36e
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-std-1.6.5/src/task/task_locals_wrapper.rs:55
[INFO] [stdout]   27:     0x55ed6ff97f98 - <async_std::task::builder::SupportTaskLocals<F> as core::future::future::Future>::poll::h0900a9e5f39dfff4
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-std-1.6.5/src/task/builder.rs:197
[INFO] [stdout]   28:     0x55ed6ff6d1bb - <futures_lite::future::Or<F1,F2> as core::future::future::Future>::poll::h43013efb111b1240
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-lite-1.11.1/src/future.rs:526
[INFO] [stdout]   29:     0x55ed6ffdf0e6 - async_executor::Executor::run::{{closure}}::h47e96c0931048b5d
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-executor-1.3.0/src/lib.rs:214
[INFO] [stdout]   30:     0x55ed6ffbe3f9 - <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h726be605fc30baf6
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/future/mod.rs:79
[INFO] [stdout]   31:     0x55ed6ffdec03 - async_executor::LocalExecutor::run::{{closure}}::h3007f8b30609280c
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-executor-1.3.0/src/lib.rs:393
[INFO] [stdout]   32:     0x55ed6ffbbbf9 - <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h016a57bdaa5d6d35
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/future/mod.rs:79
[INFO] [stdout]   33:     0x55ed6ffdd2ce - async_io::driver::block_on::h07c731fa4e4c5624
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-io-1.1.10/src/driver.rs:142
[INFO] [stdout]   34:     0x55ed6ffeecc5 - async_global_executor::reactor::block_on::h26f2a3a60ff2361d
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-global-executor-1.3.0/src/lib.rs:53
[INFO] [stdout]   35:     0x55ed6ff510dc - async_global_executor::block_on::{{closure}}::hf7927a7c76958085
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-global-executor-1.3.0/src/lib.rs:179
[INFO] [stdout]   36:     0x55ed6ff6a1fd - std::thread::local::LocalKey<T>::try_with::h62570f66a676254e
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/thread/local.rs:265
[INFO] [stdout]   37:     0x55ed6ff6911d - std::thread::local::LocalKey<T>::with::hfed96f5b17913d35
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/thread/local.rs:241
[INFO] [stdout]   38:     0x55ed6ff51074 - async_global_executor::block_on::h687925c0c05e4310
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-global-executor-1.3.0/src/lib.rs:179
[INFO] [stdout]   39:     0x55ed6ffa7efe - async_std::task::builder::Builder::blocking::{{closure}}::{{closure}}::hc6bc9f04c8e9511d
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-std-1.6.5/src/task/builder.rs:171
[INFO] [stdout]   40:     0x55ed6ffd25da - async_std::task::task_locals_wrapper::TaskLocalsWrapper::set_current::{{closure}}::h343bec514ec90052
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-std-1.6.5/src/task/task_locals_wrapper.rs:60
[INFO] [stdout]   41:     0x55ed6ff6a38d - std::thread::local::LocalKey<T>::try_with::h7dafd56637127474
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/thread/local.rs:265
[INFO] [stdout]   42:     0x55ed6ff68e4d - std::thread::local::LocalKey<T>::with::h858ffe0b08419453
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/thread/local.rs:241
[INFO] [stdout]   43:     0x55ed6ffd20b2 - async_std::task::task_locals_wrapper::TaskLocalsWrapper::set_current::ha703309169aec694
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-std-1.6.5/src/task/task_locals_wrapper.rs:55
[INFO] [stdout]   44:     0x55ed6ffa7dd4 - async_std::task::builder::Builder::blocking::{{closure}}::h50ac80ea7858f787
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-std-1.6.5/src/task/builder.rs:168
[INFO] [stdout]   45:     0x55ed6ff69705 - std::thread::local::LocalKey<T>::try_with::h2aaacd84a4614b95
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/thread/local.rs:265
[INFO] [stdout]   46:     0x55ed6ff6908d - std::thread::local::LocalKey<T>::with::hd58b475dca3ddb04
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/thread/local.rs:241
[INFO] [stdout]   47:     0x55ed6ffa7cac - async_std::task::builder::Builder::blocking::hc0f08c520c9fa1b3
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-std-1.6.5/src/task/builder.rs:161
[INFO] [stdout]   48:     0x55ed6ff97de6 - async_std::task::block_on::block_on::hd09c9af9a5a63148
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async-std-1.6.5/src/task/block_on.rs:33
[INFO] [stdout]   49:     0x55ed70009c7b - basic_server_tcp_test::basic_server::h71028e56788b06a8
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/basic_server_tcp_test.rs:37
[INFO] [stdout]   50:     0x55ed70009c3a - basic_server_tcp_test::basic_server::{{closure}}::h518526876912c5ca
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/basic_server_tcp_test.rs:37
[INFO] [stdout]   51:     0x55ed6ffefd4e - core::ops::function::FnOnce::call_once::h47d1cc8b69f0b0b0
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:227
[INFO] [stdout]   52:     0x55ed70034a93 - core::ops::function::FnOnce::call_once::hd04d57b5cf16f85a
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:227
[INFO] [stdout]   53:     0x55ed70034a93 - test::__rust_begin_short_backtrace::hd8e9a8c5a2e43388
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/test/src/lib.rs:517
[INFO] [stdout]   54:     0x55ed70032f63 - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h3c3db8a500c1a19a
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   55:     0x55ed70032f63 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h043e9ebcbe360c80
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:308
[INFO] [stdout]   56:     0x55ed70032f63 - std::panicking::try::do_call::h47c2fb275506c2e8
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:373
[INFO] [stdout]   57:     0x55ed70032f63 - std::panicking::try::h569c20f0e99453b4
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:337
[INFO] [stdout]   58:     0x55ed70032f63 - std::panic::catch_unwind::hb33c6d0f01540d23
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:379
[INFO] [stdout]   59:     0x55ed70032f63 - test::run_test_in_process::hc0ce562d167e51cf
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/test/src/lib.rs:544
[INFO] [stdout]   60:     0x55ed70032f63 - test::run_test::run_test_inner::{{closure}}::hd3120982fcd71544
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/test/src/lib.rs:450
[INFO] [stdout]   61:     0x55ed7000b5e6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h84f8bc12cc4cdac6
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:137
[INFO] [stdout]   62:     0x55ed70010815 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hb8b5fa0ba425d4db
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/thread/mod.rs:458
[INFO] [stdout]   63:     0x55ed70010815 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hc4b84b244cf55f75
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:308
[INFO] [stdout]   64:     0x55ed70010815 - std::panicking::try::do_call::ha31922ad8fa17753
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:373
[INFO] [stdout]   65:     0x55ed70010815 - std::panicking::try::h38a6da203722ae6e
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:337
[INFO] [stdout]   66:     0x55ed70010815 - std::panic::catch_unwind::h83afce167c9062b9
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:379
[INFO] [stdout]   67:     0x55ed70010815 - std::thread::Builder::spawn_unchecked::{{closure}}::h160689155590a70c
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/thread/mod.rs:457
[INFO] [stdout]   68:     0x55ed70010815 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h7dbf17a455132a46
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:227
[INFO] [stdout]   69:     0x55ed7071e9ea - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h670c50864ac2cb92
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   70:     0x55ed7071e9ea - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h2511952749086d81
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   71:     0x55ed7071e9ea - std::sys::unix::thread::Thread::new::thread_start::h5ad4ddffe24373a8
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys/unix/thread.rs:87
[INFO] [stdout]   72:     0x7fb86a225609 - start_thread
[INFO] [stdout]   73:     0x7fb86a131103 - clone
[INFO] [stdout]   74:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     basic_server
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--test basic_server_tcp_test'
[INFO] running `Command { std: "docker" "inspect" "358d9a577010b682add9e9da196d25674caede6bf8f55b4e0ae165b7c6b0c061", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "358d9a577010b682add9e9da196d25674caede6bf8f55b4e0ae165b7c6b0c061", kill_on_drop: false }`
[INFO] [stdout] 358d9a577010b682add9e9da196d25674caede6bf8f55b4e0ae165b7c6b0c061
