[INFO] cloning repository https://github.com/kpcyrd/defcon26-pow
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kpcyrd/defcon26-pow" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkpcyrd%2Fdefcon26-pow", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkpcyrd%2Fdefcon26-pow'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d17edcaf67cb2a8455e7797f3a373b9c250a3cee
[INFO] testing kpcyrd/defcon26-pow against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkpcyrd%2Fdefcon26-pow" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kpcyrd/defcon26-pow on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kpcyrd/defcon26-pow
[INFO] finished tweaking git repo https://github.com/kpcyrd/defcon26-pow
[INFO] tweaked toml for git repo https://github.com/kpcyrd/defcon26-pow written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/kpcyrd/defcon26-pow already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 309a1db8ccf5242e393156633699877df5cb5d13d18dce596583bc21f3bc4204
[INFO] running `Command { std: "docker" "start" "-a" "309a1db8ccf5242e393156633699877df5cb5d13d18dce596583bc21f3bc4204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "309a1db8ccf5242e393156633699877df5cb5d13d18dce596583bc21f3bc4204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "309a1db8ccf5242e393156633699877df5cb5d13d18dce596583bc21f3bc4204", kill_on_drop: false }`
[INFO] [stdout] 309a1db8ccf5242e393156633699877df5cb5d13d18dce596583bc21f3bc4204
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6289492005da0b9e55079f2cb715412a4ce762d9f535ef18e9da1d3a35c2c9d7
[INFO] running `Command { std: "docker" "start" "-a" "6289492005da0b9e55079f2cb715412a4ce762d9f535ef18e9da1d3a35c2c9d7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling arrayref v0.3.4
[INFO] [stderr]    Compiling byte-tools v0.2.0
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling byteorder v1.2.2
[INFO] [stderr]    Compiling generic-array v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.3.3
[INFO] [stderr]    Compiling digest v0.7.2
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]    Compiling num-bigint v0.1.43
[INFO] [stderr]    Compiling defcon26-pow v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]   --> src/main.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 | /     children.into_iter()
[INFO] [stdout] 83 | |         .map(|c| c.join().unwrap())
[INFO] [stdout] 84 | |         .collect::<Vec<_>>();
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 26s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6289492005da0b9e55079f2cb715412a4ce762d9f535ef18e9da1d3a35c2c9d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6289492005da0b9e55079f2cb715412a4ce762d9f535ef18e9da1d3a35c2c9d7", kill_on_drop: false }`
[INFO] [stdout] 6289492005da0b9e55079f2cb715412a4ce762d9f535ef18e9da1d3a35c2c9d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce90c1afd912b1722a5cf41616462cd13627888e2e3b991ff406b33317c9f242
[INFO] running `Command { std: "docker" "start" "-a" "ce90c1afd912b1722a5cf41616462cd13627888e2e3b991ff406b33317c9f242", kill_on_drop: false }`
[INFO] [stderr]    Compiling defcon26-pow v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]   --> src/main.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 | /     children.into_iter()
[INFO] [stdout] 83 | |         .map(|c| c.join().unwrap())
[INFO] [stdout] 84 | |         .collect::<Vec<_>>();
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "ce90c1afd912b1722a5cf41616462cd13627888e2e3b991ff406b33317c9f242", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce90c1afd912b1722a5cf41616462cd13627888e2e3b991ff406b33317c9f242", kill_on_drop: false }`
[INFO] [stdout] ce90c1afd912b1722a5cf41616462cd13627888e2e3b991ff406b33317c9f242
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0254b8975607d69f5f637c3b8a8c3b120a737f5f040911c9bf34788e7e4aea0a
[INFO] running `Command { std: "docker" "start" "-a" "0254b8975607d69f5f637c3b8a8c3b120a737f5f040911c9bf34788e7e4aea0a", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `collect` that must be used
[INFO] [stderr]   --> src/main.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 | /     children.into_iter()
[INFO] [stderr] 83 | |         .map(|c| c.join().unwrap())
[INFO] [stderr] 84 | |         .collect::<Vec<_>>();
[INFO] [stderr]    | |_____________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: `defcon26-pow` (bin "defcon26-pow" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/defcon26_pow-b52ee8e575403807)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::test_check_pow_invalid ... ok
[INFO] [stdout] test tests::test_check_pow_valid ... ok
[INFO] [stdout] test tests::test_pow_hash ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0254b8975607d69f5f637c3b8a8c3b120a737f5f040911c9bf34788e7e4aea0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0254b8975607d69f5f637c3b8a8c3b120a737f5f040911c9bf34788e7e4aea0a", kill_on_drop: false }`
[INFO] [stdout] 0254b8975607d69f5f637c3b8a8c3b120a737f5f040911c9bf34788e7e4aea0a