[INFO] cloning repository https://github.com/Hirevo/hashcode-2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Hirevo/hashcode-2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHirevo%2Fhashcode-2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHirevo%2Fhashcode-2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3ac0b5d621b4e3d130a2e6a2ce35bcc1eddb54fe
[INFO] checking Hirevo/hashcode-2019 against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHirevo%2Fhashcode-2019" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Hirevo/hashcode-2019 on toolchain 4a23c45c7893f1416456144e3883cc48ea91722e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Hirevo/hashcode-2019
[INFO] finished tweaking git repo https://github.com/Hirevo/hashcode-2019
[INFO] tweaked toml for git repo https://github.com/Hirevo/hashcode-2019 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Hirevo/hashcode-2019 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded either v1.5.1
[INFO] [stderr]   Downloaded rand_jitter v0.1.3
[INFO] [stderr]   Downloaded itertools v0.8.0
[INFO] [stderr]   Downloaded autocfg v0.1.2
[INFO] [stderr]   Downloaded serde_derive v1.0.88
[INFO] [stderr]   Downloaded rand_os v0.1.2
[INFO] [stderr]   Downloaded libc v0.2.49
[INFO] [stderr]   Downloaded syn v0.15.26
[INFO] [stderr]   Downloaded regex-syntax v0.6.5
[INFO] [stderr]   Downloaded serde v1.0.88
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae97a660955c498b19e2fc9596dd96d81a7d7b8d0cc174154976ae8c49880db7
[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" "ae97a660955c498b19e2fc9596dd96d81a7d7b8d0cc174154976ae8c49880db7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae97a660955c498b19e2fc9596dd96d81a7d7b8d0cc174154976ae8c49880db7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae97a660955c498b19e2fc9596dd96d81a7d7b8d0cc174154976ae8c49880db7", kill_on_drop: false }`
[INFO] [stdout] ae97a660955c498b19e2fc9596dd96d81a7d7b8d0cc174154976ae8c49880db7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb867cada9f5a0584d31fec40067d48242d67d1182a92d7bf71677d28bd4d18b
[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" "cb867cada9f5a0584d31fec40067d48242d67d1182a92d7bf71677d28bd4d18b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling serde v1.0.88
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]     Checking regex v1.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.88
[INFO] [stderr]     Checking hash-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.16s
[INFO] running `Command { std: "docker" "inspect" "cb867cada9f5a0584d31fec40067d48242d67d1182a92d7bf71677d28bd4d18b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb867cada9f5a0584d31fec40067d48242d67d1182a92d7bf71677d28bd4d18b", kill_on_drop: false }`
[INFO] [stdout] cb867cada9f5a0584d31fec40067d48242d67d1182a92d7bf71677d28bd4d18b