[INFO] cloning repository https://github.com/mcaptcha/pow_sha256
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mcaptcha/pow_sha256" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcaptcha%2Fpow_sha256", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcaptcha%2Fpow_sha256'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 807fa7c75284f6d8d488a6f66a3a1b3301f2f412
[INFO] testing mcaptcha/pow_sha256 against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcaptcha%2Fpow_sha256" "/workspace/builds/worker-27/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-27/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mcaptcha/pow_sha256 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/mcaptcha/pow_sha256
[INFO] finished tweaking git repo https://github.com/mcaptcha/pow_sha256
[INFO] tweaked toml for git repo https://github.com/mcaptcha/pow_sha256 written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate git repo https://github.com/mcaptcha/pow_sha256 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] b70ab599f9ab8ec854b80b6635152ff76a286ef9a7d1906371146e67f6493aee
[INFO] running `Command { std: "docker" "start" "-a" "b70ab599f9ab8ec854b80b6635152ff76a286ef9a7d1906371146e67f6493aee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b70ab599f9ab8ec854b80b6635152ff76a286ef9a7d1906371146e67f6493aee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b70ab599f9ab8ec854b80b6635152ff76a286ef9a7d1906371146e67f6493aee", kill_on_drop: false }`
[INFO] [stdout] b70ab599f9ab8ec854b80b6635152ff76a286ef9a7d1906371146e67f6493aee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 8d31987487237794c1e97f7e4c8072bee36312d21558b0a2d245eaf992c222d7
[INFO] running `Command { std: "docker" "start" "-a" "8d31987487237794c1e97f7e4c8072bee36312d21558b0a2d245eaf992c222d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling cpuid-bool v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling sha2 v0.9.3
[INFO] [stderr]    Compiling darling_core v0.12.4
[INFO] [stderr]    Compiling darling_macro v0.12.4
[INFO] [stderr]    Compiling darling v0.12.4
[INFO] [stderr]    Compiling derive_builder_core v0.10.2
[INFO] [stderr]    Compiling derive_builder_macro v0.10.2
[INFO] [stderr]    Compiling derive_builder v0.10.2
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling pow_sha256 v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.83s
[INFO] running `Command { std: "docker" "inspect" "8d31987487237794c1e97f7e4c8072bee36312d21558b0a2d245eaf992c222d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d31987487237794c1e97f7e4c8072bee36312d21558b0a2d245eaf992c222d7", kill_on_drop: false }`
[INFO] [stdout] 8d31987487237794c1e97f7e4c8072bee36312d21558b0a2d245eaf992c222d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 624acaaf89ebfc00d75cdf2c81b24e5144b8cf9482056b90cb560d072a8497d2
[INFO] running `Command { std: "docker" "start" "-a" "624acaaf89ebfc00d75cdf2c81b24e5144b8cf9482056b90cb560d072a8497d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling pow_sha256 v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `PoW`
[INFO] [stdout]  --> examples/simple.rs:5:33
[INFO] [stdout]   |
[INFO] [stdout] 5 | use pow_sha256::{ConfigBuilder, PoW};
[INFO] [stdout]   |                                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 0.67s
[INFO] running `Command { std: "docker" "inspect" "624acaaf89ebfc00d75cdf2c81b24e5144b8cf9482056b90cb560d072a8497d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "624acaaf89ebfc00d75cdf2c81b24e5144b8cf9482056b90cb560d072a8497d2", kill_on_drop: false }`
[INFO] [stdout] 624acaaf89ebfc00d75cdf2c81b24e5144b8cf9482056b90cb560d072a8497d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 68dbdad6b961a4bd7e43f24efbf0ebadefe57795ad480c4b25a11a535f55d370
[INFO] running `Command { std: "docker" "start" "-a" "68dbdad6b961a4bd7e43f24efbf0ebadefe57795ad480c4b25a11a535f55d370", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `PoW`
[INFO] [stderr]  --> examples/simple.rs:5:33
[INFO] [stderr]   |
[INFO] [stderr] 5 | use pow_sha256::{ConfigBuilder, PoW};
[INFO] [stderr]   |                                 ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `pow_sha256` (example "simple") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/pow_sha256-7951ae505375f6ce)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test::base_functionality ... ok
[INFO] [stdout] test test::serialization_test ... ok
[INFO] [stdout] test test::is_not_valid_proof ... ok
[INFO] [stdout] test test::double_pow ... ok
[INFO] [stdout] test test::computation_time_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 11.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests pow_sha256
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.24s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "68dbdad6b961a4bd7e43f24efbf0ebadefe57795ad480c4b25a11a535f55d370", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68dbdad6b961a4bd7e43f24efbf0ebadefe57795ad480c4b25a11a535f55d370", kill_on_drop: false }`
[INFO] [stdout] 68dbdad6b961a4bd7e43f24efbf0ebadefe57795ad480c4b25a11a535f55d370