[INFO] cloning repository https://github.com/WhiffyMuffinz/collatz-conj-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WhiffyMuffinz/collatz-conj-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWhiffyMuffinz%2Fcollatz-conj-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWhiffyMuffinz%2Fcollatz-conj-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec37498c305545f2558ae7b1b5282afa5ce9db96
[INFO] testing WhiffyMuffinz/collatz-conj-rs 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%2FWhiffyMuffinz%2Fcollatz-conj-rs" "/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/WhiffyMuffinz/collatz-conj-rs 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/WhiffyMuffinz/collatz-conj-rs
[INFO] finished tweaking git repo https://github.com/WhiffyMuffinz/collatz-conj-rs
[INFO] tweaked toml for git repo https://github.com/WhiffyMuffinz/collatz-conj-rs written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/WhiffyMuffinz/collatz-conj-rs 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-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e7a84c28cc82f1cfc7afdf3a8be483bd17d89e751d8e78fd7b562ab2f634e4f
[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" "2e7a84c28cc82f1cfc7afdf3a8be483bd17d89e751d8e78fd7b562ab2f634e4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e7a84c28cc82f1cfc7afdf3a8be483bd17d89e751d8e78fd7b562ab2f634e4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e7a84c28cc82f1cfc7afdf3a8be483bd17d89e751d8e78fd7b562ab2f634e4f", kill_on_drop: false }`
[INFO] [stdout] 2e7a84c28cc82f1cfc7afdf3a8be483bd17d89e751d8e78fd7b562ab2f634e4f
[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=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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bf70421a0babfdec355fa6559e29d01e41861e5b0585bf1f5080650027a500a5
[INFO] running `Command { std: "docker" "start" "-a" "bf70421a0babfdec355fa6559e29d01e41861e5b0585bf1f5080650027a500a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling collatz-conj-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `hasse`
[INFO] [stdout]   --> src/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn hasse(from: u128, to: u128, debug: bool) -> Vec<Vec<u128>> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 1.07s
[INFO] running `Command { std: "docker" "inspect" "bf70421a0babfdec355fa6559e29d01e41861e5b0585bf1f5080650027a500a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf70421a0babfdec355fa6559e29d01e41861e5b0585bf1f5080650027a500a5", kill_on_drop: false }`
[INFO] [stdout] bf70421a0babfdec355fa6559e29d01e41861e5b0585bf1f5080650027a500a5
[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=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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f1482d54e5bf8b614da06ab5e5b754a93b6cf79e57c709347571e44348b83d6f
[INFO] running `Command { std: "docker" "start" "-a" "f1482d54e5bf8b614da06ab5e5b754a93b6cf79e57c709347571e44348b83d6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling collatz-conj-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `hasse`
[INFO] [stdout]   --> src/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn hasse(from: u128, to: u128, debug: bool) -> Vec<Vec<u128>> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 0.93s
[INFO] running `Command { std: "docker" "inspect" "f1482d54e5bf8b614da06ab5e5b754a93b6cf79e57c709347571e44348b83d6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1482d54e5bf8b614da06ab5e5b754a93b6cf79e57c709347571e44348b83d6f", kill_on_drop: false }`
[INFO] [stdout] f1482d54e5bf8b614da06ab5e5b754a93b6cf79e57c709347571e44348b83d6f
[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=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] f0200a8029f1ecd41eb66e70b46d0bbbe93276e3cfa827fa23dabc8f708897cf
[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" "f0200a8029f1ecd41eb66e70b46d0bbbe93276e3cfa827fa23dabc8f708897cf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: function is never used: `hasse`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/main.rs:20:4
[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] 20 | fn hasse(from: u128, to: u128, debug: bool) -> Vec<Vec<u128>> {
[INFO] [stdout] 
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `collatz-conj-rs` (bin "collatz-conj-rs" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/collatz_conj_rs-90eee6f0a385d5b0)
[INFO] running `Command { std: "docker" "inspect" "f0200a8029f1ecd41eb66e70b46d0bbbe93276e3cfa827fa23dabc8f708897cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0200a8029f1ecd41eb66e70b46d0bbbe93276e3cfa827fa23dabc8f708897cf", kill_on_drop: false }`
[INFO] [stdout] f0200a8029f1ecd41eb66e70b46d0bbbe93276e3cfa827fa23dabc8f708897cf