[INFO] cloning repository https://github.com/vincent-tr/hello-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vincent-tr/hello-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvincent-tr%2Fhello-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvincent-tr%2Fhello-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a4a9f685714ee7c0ec2d5afd02fbe60cb566f545
[INFO] testing vincent-tr/hello-rust against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvincent-tr%2Fhello-rust" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vincent-tr/hello-rust on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vincent-tr/hello-rust
[INFO] finished tweaking git repo https://github.com/vincent-tr/hello-rust
[INFO] tweaked toml for git repo https://github.com/vincent-tr/hello-rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/vincent-tr/hello-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd1c03dc8735b043bf71a5a8baf1bcb96c6ffdb36b5145b14c5a13c67383af5f
[INFO] running `Command { std: "docker" "start" "-a" "cd1c03dc8735b043bf71a5a8baf1bcb96c6ffdb36b5145b14c5a13c67383af5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd1c03dc8735b043bf71a5a8baf1bcb96c6ffdb36b5145b14c5a13c67383af5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd1c03dc8735b043bf71a5a8baf1bcb96c6ffdb36b5145b14c5a13c67383af5f", kill_on_drop: false }`
[INFO] [stdout] cd1c03dc8735b043bf71a5a8baf1bcb96c6ffdb36b5145b14c5a13c67383af5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ad749cd1b0ecde60e10656d35fe353f08e28897f419115fb2d9824ef2f1ba22
[INFO] running `Command { std: "docker" "start" "-a" "7ad749cd1b0ecde60e10656d35fe353f08e28897f419115fb2d9824ef2f1ba22", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling smallvec v1.5.1
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]    Compiling bytes v1.0.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.0
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling tokio v1.0.1
[INFO] [stderr]    Compiling hash32 v0.1.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling parking_lot_core v0.8.2
[INFO] [stderr]    Compiling mio v0.7.6
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling generic-array v0.13.2
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling as-slice v0.1.4
[INFO] [stderr]    Compiling tokio-macros v1.0.0
[INFO] [stderr]    Compiling mqttrs v0.4.0
[INFO] [stderr]    Compiling hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `client`
[INFO] [stdout]  --> main.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 |   let client = MqttClient::new();
[INFO] [stdout]   |       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_client`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> mqtt.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut client =  MqttClient {task: None, stream: None};
[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: field is never read: `task`
[INFO] [stdout]  --> mqtt.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   task: Option<JoinHandle<()>>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stream`
[INFO] [stdout]  --> mqtt.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   stream: Option<TcpStream>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `do_loop`
[INFO] [stdout]   --> mqtt.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |   async fn do_loop(&mut self) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.09s
[INFO] running `Command { std: "docker" "inspect" "7ad749cd1b0ecde60e10656d35fe353f08e28897f419115fb2d9824ef2f1ba22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ad749cd1b0ecde60e10656d35fe353f08e28897f419115fb2d9824ef2f1ba22", kill_on_drop: false }`
[INFO] [stdout] 7ad749cd1b0ecde60e10656d35fe353f08e28897f419115fb2d9824ef2f1ba22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4036734557a4742ead41309104c154a323dd1afbea41fab98738a2131d0bf812
[INFO] running `Command { std: "docker" "start" "-a" "4036734557a4742ead41309104c154a323dd1afbea41fab98738a2131d0bf812", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `client`
[INFO] [stdout]  --> main.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 |   let client = MqttClient::new();
[INFO] [stdout]   |       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_client`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> mqtt.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut client =  MqttClient {task: None, stream: None};
[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: field is never read: `task`
[INFO] [stdout]  --> mqtt.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   task: Option<JoinHandle<()>>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stream`
[INFO] [stdout]  --> mqtt.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   stream: Option<TcpStream>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `do_loop`
[INFO] [stdout]   --> mqtt.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |   async fn do_loop(&mut self) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4036734557a4742ead41309104c154a323dd1afbea41fab98738a2131d0bf812", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4036734557a4742ead41309104c154a323dd1afbea41fab98738a2131d0bf812", kill_on_drop: false }`
[INFO] [stdout] 4036734557a4742ead41309104c154a323dd1afbea41fab98738a2131d0bf812
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1ef4bd34b89a74a6ba9c9cf8fdfcedd9bc73e86dc00666fbcb105c55f9777f12
[INFO] running `Command { std: "docker" "start" "-a" "1ef4bd34b89a74a6ba9c9cf8fdfcedd9bc73e86dc00666fbcb105c55f9777f12", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `client`
[INFO] [stderr]  --> main.rs:8:7
[INFO] [stderr]   |
[INFO] [stderr] 8 |   let client = MqttClient::new();
[INFO] [stderr]   |       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_client`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> mqtt.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut client =  MqttClient {task: None, stream: None};
[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: field is never read: `task`
[INFO] [stderr]  --> mqtt.rs:4:3
[INFO] [stderr]   |
[INFO] [stderr] 4 |   task: Option<JoinHandle<()>>,
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `stream`
[INFO] [stderr]  --> mqtt.rs:5:3
[INFO] [stderr]   |
[INFO] [stderr] 5 |   stream: Option<TcpStream>,
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `do_loop`
[INFO] [stderr]   --> mqtt.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 20 |   async fn do_loop(&mut self) {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `hello-rust` (bin "hello-rust" test) generated 5 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hello_rust-7986263d03deaace)
[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" "1ef4bd34b89a74a6ba9c9cf8fdfcedd9bc73e86dc00666fbcb105c55f9777f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ef4bd34b89a74a6ba9c9cf8fdfcedd9bc73e86dc00666fbcb105c55f9777f12", kill_on_drop: false }`
[INFO] [stdout] 1ef4bd34b89a74a6ba9c9cf8fdfcedd9bc73e86dc00666fbcb105c55f9777f12