[INFO] cloning repository https://github.com/arzg/gradient
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arzg/gradient" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farzg%2Fgradient", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farzg%2Fgradient'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 967da3a63180b741f04a52ec7bed2d44beed3d38
[INFO] testing arzg/gradient against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farzg%2Fgradient" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arzg/gradient 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/arzg/gradient
[INFO] finished tweaking git repo https://github.com/arzg/gradient
[INFO] tweaked toml for git repo https://github.com/arzg/gradient written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/arzg/gradient 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] fc58b178f6e4a1f87fe563e506383ae69577356e942cb25423904f4d07ecd35a
[INFO] running `Command { std: "docker" "start" "-a" "fc58b178f6e4a1f87fe563e506383ae69577356e942cb25423904f4d07ecd35a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc58b178f6e4a1f87fe563e506383ae69577356e942cb25423904f4d07ecd35a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc58b178f6e4a1f87fe563e506383ae69577356e942cb25423904f4d07ecd35a", kill_on_drop: false }`
[INFO] [stdout] fc58b178f6e4a1f87fe563e506383ae69577356e942cb25423904f4d07ecd35a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] de56c4233178ffb46efffc0769f29878f1c9736126d3ad5c46ecc0cfcb549542
[INFO] running `Command { std: "docker" "start" "-a" "de56c4233178ffb46efffc0769f29878f1c9736126d3ad5c46ecc0cfcb549542", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling anyhow v1.0.52
[INFO] [stderr]    Compiling tincture v0.5.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling png v0.16.8
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling image v0.23.14
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling gradient v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.31s
[INFO] running `Command { std: "docker" "inspect" "de56c4233178ffb46efffc0769f29878f1c9736126d3ad5c46ecc0cfcb549542", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de56c4233178ffb46efffc0769f29878f1c9736126d3ad5c46ecc0cfcb549542", kill_on_drop: false }`
[INFO] [stdout] de56c4233178ffb46efffc0769f29878f1c9736126d3ad5c46ecc0cfcb549542
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 2a0d7edbd7ed03abe112b8ea46e2a9cc2c229dde88a47cdac753492389b85f2a
[INFO] running `Command { std: "docker" "start" "-a" "2a0d7edbd7ed03abe112b8ea46e2a9cc2c229dde88a47cdac753492389b85f2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling gradient v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "2a0d7edbd7ed03abe112b8ea46e2a9cc2c229dde88a47cdac753492389b85f2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a0d7edbd7ed03abe112b8ea46e2a9cc2c229dde88a47cdac753492389b85f2a", kill_on_drop: false }`
[INFO] [stdout] 2a0d7edbd7ed03abe112b8ea46e2a9cc2c229dde88a47cdac753492389b85f2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 73cc6c4143f904def5d539055ec64b2adbab72f45d83debbd1ed8d7a9f3b93f8
[INFO] running `Command { std: "docker" "start" "-a" "73cc6c4143f904def5d539055ec64b2adbab72f45d83debbd1ed8d7a9f3b93f8", kill_on_drop: false }`
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gradient-2464fba629eded87)
[INFO] running `Command { std: "docker" "inspect" "73cc6c4143f904def5d539055ec64b2adbab72f45d83debbd1ed8d7a9f3b93f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73cc6c4143f904def5d539055ec64b2adbab72f45d83debbd1ed8d7a9f3b93f8", kill_on_drop: false }`
[INFO] [stdout] 73cc6c4143f904def5d539055ec64b2adbab72f45d83debbd1ed8d7a9f3b93f8