[INFO] cloning repository https://github.com/llenotre/maestro_tester
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/llenotre/maestro_tester" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fllenotre%2Fmaestro_tester", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fllenotre%2Fmaestro_tester'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1fb21ca1621c66216ecd5947c44ab41aff88f6ad
[INFO] testing llenotre/maestro_tester against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fllenotre%2Fmaestro_tester" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/llenotre/maestro_tester on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/llenotre/maestro_tester
[INFO] finished tweaking git repo https://github.com/llenotre/maestro_tester
[INFO] tweaked toml for git repo https://github.com/llenotre/maestro_tester written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/llenotre/maestro_tester already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6475c8cc6634dea9514da4490afcc99cecc36c1148372826800b02ecfcae7f63
[INFO] running `Command { std: "docker" "start" "-a" "6475c8cc6634dea9514da4490afcc99cecc36c1148372826800b02ecfcae7f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6475c8cc6634dea9514da4490afcc99cecc36c1148372826800b02ecfcae7f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6475c8cc6634dea9514da4490afcc99cecc36c1148372826800b02ecfcae7f63", kill_on_drop: false }`
[INFO] [stdout] 6475c8cc6634dea9514da4490afcc99cecc36c1148372826800b02ecfcae7f63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bdda3491d11aa0111f006470dfa726a80bb52ea11985b250f12e36fda2f4ca11
[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" "bdda3491d11aa0111f006470dfa726a80bb52ea11985b250f12e36fda2f4ca11", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling maestro_tester v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     value: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `environment`
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     environment: Vec::<EnvVar>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `command`
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     command: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arguments`
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     arguments: Vec::<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `repository`
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     repository: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `compilation`
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     compilation: CompilationCommand,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `output_binary`
[INFO] [stdout]   --> src/main.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     output_binary: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `clone_repo`
[INFO] [stdout]   --> src/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn clone_repo(url: &String, dir: &String) -> Result<(), ()> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compile`
[INFO] [stdout]   --> src/main.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn compile(config: &Config, dir: &String) -> Result<(), ()> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         fs::remove_dir_all(sources_dir);
[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/test_machine.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |         sock.set_broadcast(true);
[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: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.29s
[INFO] running `Command { std: "docker" "inspect" "bdda3491d11aa0111f006470dfa726a80bb52ea11985b250f12e36fda2f4ca11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdda3491d11aa0111f006470dfa726a80bb52ea11985b250f12e36fda2f4ca11", kill_on_drop: false }`
[INFO] [stdout] bdda3491d11aa0111f006470dfa726a80bb52ea11985b250f12e36fda2f4ca11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 061930568d455c00c04989c1f4cc732a36bd7d0eef788ebcacda36c38be6289d
[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" "061930568d455c00c04989c1f4cc732a36bd7d0eef788ebcacda36c38be6289d", kill_on_drop: false }`
[INFO] [stderr]    Compiling maestro_tester v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     value: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `environment`
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     environment: Vec::<EnvVar>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `command`
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     command: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arguments`
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     arguments: Vec::<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `repository`
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     repository: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `compilation`
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     compilation: CompilationCommand,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `output_binary`
[INFO] [stdout]   --> src/main.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     output_binary: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `clone_repo`
[INFO] [stdout]   --> src/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn clone_repo(url: &String, dir: &String) -> Result<(), ()> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compile`
[INFO] [stdout]   --> src/main.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn compile(config: &Config, dir: &String) -> Result<(), ()> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         fs::remove_dir_all(sources_dir);
[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/test_machine.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |         sock.set_broadcast(true);
[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: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "061930568d455c00c04989c1f4cc732a36bd7d0eef788ebcacda36c38be6289d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "061930568d455c00c04989c1f4cc732a36bd7d0eef788ebcacda36c38be6289d", kill_on_drop: false }`
[INFO] [stdout] 061930568d455c00c04989c1f4cc732a36bd7d0eef788ebcacda36c38be6289d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b91fef9e59ee6ca20e1595d4079cecf9b6b9b624c3c308197e9221209060f8fc
[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" "b91fef9e59ee6ca20e1595d4079cecf9b6b9b624c3c308197e9221209060f8fc", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `name`
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     name: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `value`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     value: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `environment`
[INFO] [stderr]   --> src/main.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     environment: Vec::<EnvVar>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `command`
[INFO] [stderr]   --> src/main.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     command: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `arguments`
[INFO] [stderr]   --> src/main.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     arguments: Vec::<String>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `repository`
[INFO] [stderr]   --> src/main.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     repository: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `compilation`
[INFO] [stderr]   --> src/main.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     compilation: CompilationCommand,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `output_binary`
[INFO] [stderr]   --> src/main.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     output_binary: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clone_repo`
[INFO] [stderr]   --> src/main.rs:60:4
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn clone_repo(url: &String, dir: &String) -> Result<(), ()> {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `compile`
[INFO] [stderr]   --> src/main.rs:81:4
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn compile(config: &Config, dir: &String) -> Result<(), ()> {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         fs::remove_dir_all(sources_dir);
[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/test_machine.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 |         sock.set_broadcast(true);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `maestro_tester` (bin "maestro_tester" test) generated 12 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/maestro_tester-acb4e1235dee9798)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test test_machine::test::parse_mac1 ... ok
[INFO] [stdout] test test_machine::test::parse_mac2 ... ok
[INFO] [stdout] test test_machine::test::parse_mac5 ... ok
[INFO] [stdout] test test_machine::test::parse_mac3 ... ok
[INFO] [stdout] test test_machine::test::parse_mac0 ... ok
[INFO] [stdout] test test_machine::test::parse_mac4 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b91fef9e59ee6ca20e1595d4079cecf9b6b9b624c3c308197e9221209060f8fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b91fef9e59ee6ca20e1595d4079cecf9b6b9b624c3c308197e9221209060f8fc", kill_on_drop: false }`
[INFO] [stdout] b91fef9e59ee6ca20e1595d4079cecf9b6b9b624c3c308197e9221209060f8fc