[INFO] cloning repository https://github.com/MidasLamb/HashCode2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MidasLamb/HashCode2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMidasLamb%2FHashCode2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMidasLamb%2FHashCode2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eaf7ef755c8e931f3b7b6674cda4973775a92a3c
[INFO] testing MidasLamb/HashCode2021 against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMidasLamb%2FHashCode2021" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MidasLamb/HashCode2021 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/MidasLamb/HashCode2021
[INFO] finished tweaking git repo https://github.com/MidasLamb/HashCode2021
[INFO] tweaked toml for git repo https://github.com/MidasLamb/HashCode2021 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/MidasLamb/HashCode2021 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] warning: unused manifest key: lib.metaheuristics
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.9
[INFO] [stderr]   Downloaded fuchsia-cprng v0.1.1
[INFO] [stderr]   Downloaded thiserror-impl v1.0.24
[INFO] [stderr]   Downloaded zip v0.5.10
[INFO] [stderr]   Downloaded syn v1.0.60
[INFO] [stderr]   Downloaded same-file v1.0.6
[INFO] [stderr]   Downloaded rand_core v0.3.1
[INFO] [stderr]   Downloaded rand_core v0.4.2
[INFO] [stderr]   Downloaded proc-macro-error-attr v1.0.4
[INFO] [stderr]   Downloaded libc v0.2.86
[INFO] [stderr]   Downloaded bzip2 v0.3.3
[INFO] [stderr]   Downloaded flate2 v1.0.14
[INFO] [stderr]   Downloaded cc v1.0.67
[INFO] [stderr]   Downloaded structopt-derive v0.4.14
[INFO] [stderr]   Downloaded byteorder v1.4.2
[INFO] [stderr]   Downloaded structopt v0.3.21
[INFO] [stderr]   Downloaded heck v0.3.2
[INFO] [stderr]   Downloaded unicode-segmentation v1.7.1
[INFO] [stderr]   Downloaded rand v0.3.23
[INFO] [stderr]   Downloaded proc-macro-error v1.0.4
[INFO] [stderr]   Downloaded rand v0.4.6
[INFO] [stderr]   Downloaded hermit-abi v0.1.18
[INFO] [stderr]   Downloaded thiserror v1.0.24
[INFO] [stderr]   Downloaded walkdir v2.3.1
[INFO] [stderr]   Downloaded miniz_oxide v0.3.7
[INFO] [stderr]   Downloaded bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]   Downloaded metaheuristics v1.0.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] b33e603feaefb18f25694b4afa0722724fb7aeb715a70bcce251e9df9008941a
[INFO] running `Command { std: "docker" "start" "-a" "b33e603feaefb18f25694b4afa0722724fb7aeb715a70bcce251e9df9008941a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b33e603feaefb18f25694b4afa0722724fb7aeb715a70bcce251e9df9008941a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b33e603feaefb18f25694b4afa0722724fb7aeb715a70bcce251e9df9008941a", kill_on_drop: false }`
[INFO] [stdout] b33e603feaefb18f25694b4afa0722724fb7aeb715a70bcce251e9df9008941a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 6a1c034e606f76c18f50366a868121af4bd0603d8a3ba88082be4d985291797f
[INFO] running `Command { std: "docker" "start" "-a" "6a1c034e606f76c18f50366a868121af4bd0603d8a3ba88082be4d985291797f", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: lib.metaheuristics
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling byteorder v1.4.2
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling metaheuristics v1.0.15
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]    Compiling zip v0.5.10
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling hash-code-2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `hash-code-2021 v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/hash-code-2021-8c1e6f18421ce6c1/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=src
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] running `Command { std: "docker" "inspect" "6a1c034e606f76c18f50366a868121af4bd0603d8a3ba88082be4d985291797f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a1c034e606f76c18f50366a868121af4bd0603d8a3ba88082be4d985291797f", kill_on_drop: false }`
[INFO] [stdout] 6a1c034e606f76c18f50366a868121af4bd0603d8a3ba88082be4d985291797f