[INFO] cloning repository https://github.com/ChaosCat/MUDPortal
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ChaosCat/MUDPortal" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChaosCat%2FMUDPortal", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChaosCat%2FMUDPortal'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 224d20b8c42e9b8b1eb8a23f26b14550e735c051
[INFO] testing ChaosCat/MUDPortal against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChaosCat%2FMUDPortal" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ChaosCat/MUDPortal on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ChaosCat/MUDPortal
[INFO] finished tweaking git repo https://github.com/ChaosCat/MUDPortal
[INFO] tweaked toml for git repo https://github.com/ChaosCat/MUDPortal written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/ChaosCat/MUDPortal already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded telnet v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9251eb1da629f359c59363a29815e620c940fd00b01b91f4025b83545a8fc319
[INFO] running `Command { std: "docker" "start" "-a" "9251eb1da629f359c59363a29815e620c940fd00b01b91f4025b83545a8fc319", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9251eb1da629f359c59363a29815e620c940fd00b01b91f4025b83545a8fc319", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9251eb1da629f359c59363a29815e620c940fd00b01b91f4025b83545a8fc319", kill_on_drop: false }`
[INFO] [stdout] 9251eb1da629f359c59363a29815e620c940fd00b01b91f4025b83545a8fc319
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ea40ccb9065b5e9cf1fea8f1638a3ff01ee30ee8d69544da43c37e5fe50d37e
[INFO] running `Command { std: "docker" "start" "-a" "7ea40ccb9065b5e9cf1fea8f1638a3ff01ee30ee8d69544da43c37e5fe50d37e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling telnet v0.1.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling simple-logging v2.0.2
[INFO] [stderr]    Compiling mud-portal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/client/morgengrauen.rs:3:46
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{stdout, stdin, Write, BufRead, Error};
[INFO] [stdout]   |                                              ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::Any`
[INFO] [stdout]  --> src/client/morgengrauen.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::any::Any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/client/morgengrauen.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 20  | /     loop {
[INFO] [stdout] 21  | |         curr_event = connection.read().expect("Failed reading from server");
[INFO] [stdout] 22  | |         match curr_event {
[INFO] [stdout] 23  | |             TelnetEvent::Data(data) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 113 | |         input.clear();
[INFO] [stdout] 114 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 115 | 
[INFO] [stdout] 116 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut connection = match Telnet::connect(MORGENGRUEN_CONNECTION_INFO,
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `MorgenGrauenClient`
[INFO] [stdout]  --> src/client/morgengrauen.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct MorgenGrauenClient {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     client_loop(connection);
[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 `Result` that must be used
[INFO] [stdout]   --> src/client/morgengrauen.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |         lout.flush();
[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 `Result` that must be used
[INFO] [stdout]    --> src/client/morgengrauen.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                     connection.write(input.as_bytes());
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.00s
[INFO] running `Command { std: "docker" "inspect" "7ea40ccb9065b5e9cf1fea8f1638a3ff01ee30ee8d69544da43c37e5fe50d37e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ea40ccb9065b5e9cf1fea8f1638a3ff01ee30ee8d69544da43c37e5fe50d37e", kill_on_drop: false }`
[INFO] [stdout] 7ea40ccb9065b5e9cf1fea8f1638a3ff01ee30ee8d69544da43c37e5fe50d37e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e9d8a2fc0f8a8e90d93d7a4ccdf169d37820552084d95cf9becf8f6262fe04b
[INFO] running `Command { std: "docker" "start" "-a" "2e9d8a2fc0f8a8e90d93d7a4ccdf169d37820552084d95cf9becf8f6262fe04b", kill_on_drop: false }`
[INFO] [stderr]    Compiling mud-portal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/client/morgengrauen.rs:3:46
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{stdout, stdin, Write, BufRead, Error};
[INFO] [stdout]   |                                              ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::Any`
[INFO] [stdout]  --> src/client/morgengrauen.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::any::Any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/client/morgengrauen.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 20  | /     loop {
[INFO] [stdout] 21  | |         curr_event = connection.read().expect("Failed reading from server");
[INFO] [stdout] 22  | |         match curr_event {
[INFO] [stdout] 23  | |             TelnetEvent::Data(data) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 113 | |         input.clear();
[INFO] [stdout] 114 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 115 | 
[INFO] [stdout] 116 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut connection = match Telnet::connect(MORGENGRUEN_CONNECTION_INFO,
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `MorgenGrauenClient`
[INFO] [stdout]  --> src/client/morgengrauen.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct MorgenGrauenClient {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     client_loop(connection);
[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 `Result` that must be used
[INFO] [stdout]   --> src/client/morgengrauen.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |         lout.flush();
[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 `Result` that must be used
[INFO] [stdout]    --> src/client/morgengrauen.rs:105:21
[INFO] [stdout]     |
[INFO] [stdout] 105 |                     connection.write(input.as_bytes());
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "2e9d8a2fc0f8a8e90d93d7a4ccdf169d37820552084d95cf9becf8f6262fe04b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e9d8a2fc0f8a8e90d93d7a4ccdf169d37820552084d95cf9becf8f6262fe04b", kill_on_drop: false }`
[INFO] [stdout] 2e9d8a2fc0f8a8e90d93d7a4ccdf169d37820552084d95cf9becf8f6262fe04b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6760a6a3b8d3c1b372f6cfd67f840b8a73e12e82389a3bb803ccc3be17c5407e
[INFO] running `Command { std: "docker" "start" "-a" "6760a6a3b8d3c1b372f6cfd67f840b8a73e12e82389a3bb803ccc3be17c5407e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/client/morgengrauen.rs:3:46
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 3 | use std::io::{stdout, stdin, Write, BufRead, Error};
[INFO] [stdout] 
[INFO] [stderr]   |                                              ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::any::Any`
[INFO] [stderr]  --> src/client/morgengrauen.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::any::Any;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/client/morgengrauen.rs:116:5
[INFO] [stderr]     |
[INFO] [stderr] 20  | /     loop {
[INFO] [stderr] 21  | |         curr_event = connection.read().expect("Failed reading from server");
[INFO] [stderr] 22  | |         match curr_event {
[INFO] [stderr] 23  | |             TelnetEvent::Data(data) => {
[INFO] [stderr] ...   |
[INFO] [stderr] 113 | |         input.clear();
[INFO] [stderr] 114 | |     }
[INFO] [stderr]     | |_____- any code following this expression is unreachable
[INFO] [stderr] 115 | 
[INFO] [stderr] 116 |       Ok(())
[INFO] [stderr]     |       ^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut connection = match Telnet::connect(MORGENGRUEN_CONNECTION_INFO,
[INFO] [stderr]    |         ----^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MorgenGrauenClient`
[INFO] [stderr]  --> src/client/morgengrauen.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | struct MorgenGrauenClient {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     client_loop(connection);
[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 `Result` that must be used
[INFO] [stderr]   --> src/client/morgengrauen.rs:97:9
[INFO] [stderr]    |
[INFO] [stderr] 97 |         lout.flush();
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/client/morgengrauen.rs:105:21
[INFO] [stderr]     |
[INFO] [stderr] 105 |                     connection.write(input.as_bytes());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mud_portal-0ab2ffbae009e733)
[INFO] running `Command { std: "docker" "inspect" "6760a6a3b8d3c1b372f6cfd67f840b8a73e12e82389a3bb803ccc3be17c5407e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6760a6a3b8d3c1b372f6cfd67f840b8a73e12e82389a3bb803ccc3be17c5407e", kill_on_drop: false }`
[INFO] [stdout] 6760a6a3b8d3c1b372f6cfd67f840b8a73e12e82389a3bb803ccc3be17c5407e