[INFO] cloning repository https://github.com/keithnoguchi/rustbox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/keithnoguchi/rustbox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeithnoguchi%2Frustbox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeithnoguchi%2Frustbox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f5a0c71616cfbd55d4ee0f500526e122c980adf
[INFO] testing keithnoguchi/rustbox against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeithnoguchi%2Frustbox" "/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/keithnoguchi/rustbox on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/keithnoguchi/rustbox
[INFO] finished tweaking git repo https://github.com/keithnoguchi/rustbox
[INFO] tweaked toml for git repo https://github.com/keithnoguchi/rustbox written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/keithnoguchi/rustbox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4cefd2eafa851bfc424de3760093714cd43da9d6ffd3b2cbf966e23efbb0449
[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" "e4cefd2eafa851bfc424de3760093714cd43da9d6ffd3b2cbf966e23efbb0449", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4cefd2eafa851bfc424de3760093714cd43da9d6ffd3b2cbf966e23efbb0449", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4cefd2eafa851bfc424de3760093714cd43da9d6ffd3b2cbf966e23efbb0449", kill_on_drop: false }`
[INFO] [stdout] e4cefd2eafa851bfc424de3760093714cd43da9d6ffd3b2cbf966e23efbb0449
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ba78c8c5e7d0f8c4a6ea737a53c68991c5ea7f752b3472f3c57a0683254fc31f
[INFO] running `Command { std: "docker" "start" "-a" "ba78c8c5e7d0f8c4a6ea737a53c68991c5ea7f752b3472f3c57a0683254fc31f", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.7
[INFO] [stderr]    Compiling futures-io v0.3.7
[INFO] [stderr]    Compiling futures-sink v0.3.7
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling tower-layer v0.3.0
[INFO] [stderr]    Compiling async-task v4.0.3
[INFO] [stderr]    Compiling event-listener v2.5.1
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling flatbuf-tutorial v0.1.0 (/opt/rustwide/workdir/flatbuf)
[INFO] [stderr]    Compiling style-book v0.1.0 (/opt/rustwide/workdir/style)
[INFO] [stderr]    Compiling async-task-book v0.1.0 (/opt/rustwide/workdir/async-task)
[INFO] [stderr]    Compiling list-book v0.1.0 (/opt/rustwide/workdir/list)
[INFO] [stderr]    Compiling actix-web-book v0.1.0 (/opt/rustwide/workdir/actix-web)
[INFO] [stderr]    Compiling algorithm-book v0.1.0 (/opt/rustwide/workdir/algorithm)
[INFO] [stderr]    Compiling embedded-book v0.1.0 (/opt/rustwide/workdir/embedded)
[INFO] [stderr]    Compiling futures-task v0.3.7
[INFO] [stderr]    Compiling tracing-core v0.1.10
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling flatbuffers v0.6.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling futures-channel v0.3.7
[INFO] [stderr]    Compiling net2 v0.2.35
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling signal-hook-registry v1.2.2
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling nb-connect v1.0.2
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling socket2 v0.3.15
[INFO] [stderr]    Compiling parking_lot_core v0.8.0
[INFO] [stderr]    Compiling async-task v1.3.1
[INFO] [stderr]    Compiling futures-lite v1.11.2
[INFO] [stderr]    Compiling polling v2.0.2
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling mio v0.7.5
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling mut_static v5.0.0
[INFO] [stderr]    Compiling async-channel v1.5.1
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr] error: failed to run custom build command for `flatbuf-tutorial v0.1.0 (/opt/rustwide/workdir/flatbuf)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/flatbuf-tutorial-7cfbf7075c284340/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: Os { code: 2, kind: NotFound, message: "No such file or directory" }
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ba78c8c5e7d0f8c4a6ea737a53c68991c5ea7f752b3472f3c57a0683254fc31f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba78c8c5e7d0f8c4a6ea737a53c68991c5ea7f752b3472f3c57a0683254fc31f", kill_on_drop: false }`
[INFO] [stdout] ba78c8c5e7d0f8c4a6ea737a53c68991c5ea7f752b3472f3c57a0683254fc31f