[INFO] cloning repository https://github.com/rafalpiotrowski/mlabvm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rafalpiotrowski/mlabvm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafalpiotrowski%2Fmlabvm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafalpiotrowski%2Fmlabvm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 48308a463c15f9a10779cfe800330bc072143f5b
[INFO] testing rafalpiotrowski/mlabvm against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafalpiotrowski%2Fmlabvm" "/workspace/builds/worker-53/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-53/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rafalpiotrowski/mlabvm on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rafalpiotrowski/mlabvm
[INFO] finished tweaking git repo https://github.com/rafalpiotrowski/mlabvm
[INFO] tweaked toml for git repo https://github.com/rafalpiotrowski/mlabvm written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] crate git repo https://github.com/rafalpiotrowski/mlabvm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f21e8f3ac1779d8bdab5211bf7ef7d788d5ebe9efbb412a553a02d7c9987aa7
[INFO] running `Command { std: "docker" "start" "-a" "8f21e8f3ac1779d8bdab5211bf7ef7d788d5ebe9efbb412a553a02d7c9987aa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f21e8f3ac1779d8bdab5211bf7ef7d788d5ebe9efbb412a553a02d7c9987aa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f21e8f3ac1779d8bdab5211bf7ef7d788d5ebe9efbb412a553a02d7c9987aa7", kill_on_drop: false }`
[INFO] [stdout] 8f21e8f3ac1779d8bdab5211bf7ef7d788d5ebe9efbb412a553a02d7c9987aa7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92435b7344b96eaf3df1c6306b6df67d83af6bdd7a16e3c21cfec8efe9d3f944
[INFO] running `Command { std: "docker" "start" "-a" "92435b7344b96eaf3df1c6306b6df67d83af6bdd7a16e3c21cfec8efe9d3f944", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mlabvm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> src/main.rs:83:18
[INFO] [stdout]    |
[INFO] [stdout] 83 |             Loop(count) => {
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `Command { std: "docker" "inspect" "92435b7344b96eaf3df1c6306b6df67d83af6bdd7a16e3c21cfec8efe9d3f944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92435b7344b96eaf3df1c6306b6df67d83af6bdd7a16e3c21cfec8efe9d3f944", kill_on_drop: false }`
[INFO] [stdout] 92435b7344b96eaf3df1c6306b6df67d83af6bdd7a16e3c21cfec8efe9d3f944
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5f9e4eae039168395a8271cda407d08bb2c0687a3d9f15b71ac0dce3cdc9f02
[INFO] running `Command { std: "docker" "start" "-a" "a5f9e4eae039168395a8271cda407d08bb2c0687a3d9f15b71ac0dce3cdc9f02", kill_on_drop: false }`
[INFO] [stderr]    Compiling mlabvm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> src/main.rs:83:18
[INFO] [stdout]    |
[INFO] [stdout] 83 |             Loop(count) => {
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "a5f9e4eae039168395a8271cda407d08bb2c0687a3d9f15b71ac0dce3cdc9f02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5f9e4eae039168395a8271cda407d08bb2c0687a3d9f15b71ac0dce3cdc9f02", kill_on_drop: false }`
[INFO] [stdout] a5f9e4eae039168395a8271cda407d08bb2c0687a3d9f15b71ac0dce3cdc9f02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b2517e43278c179fe8078551459b682f27d098caeeb077d5f46375e6adec39d0
[INFO] running `Command { std: "docker" "start" "-a" "b2517e43278c179fe8078551459b682f27d098caeeb077d5f46375e6adec39d0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused variable: `count`
[INFO] [stderr]   --> src/main.rs:83:18
[INFO] [stderr]    |
[INFO] [stderr] 83 |             Loop(count) => {
[INFO] [stderr]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mlabvm` (bin "mlabvm" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.58s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mlabvm-270c7f5dc30add26)
[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" "b2517e43278c179fe8078551459b682f27d098caeeb077d5f46375e6adec39d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2517e43278c179fe8078551459b682f27d098caeeb077d5f46375e6adec39d0", kill_on_drop: false }`
[INFO] [stdout] b2517e43278c179fe8078551459b682f27d098caeeb077d5f46375e6adec39d0