[INFO] cloning repository https://github.com/matterinc/plasma_cash_history_snark
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matterinc/plasma_cash_history_snark" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatterinc%2Fplasma_cash_history_snark", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatterinc%2Fplasma_cash_history_snark'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5d6158af998f930a0cd7e77d88d1f53d688187ce
[INFO] checking matterinc/plasma_cash_history_snark against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatterinc%2Fplasma_cash_history_snark" "/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/matterinc/plasma_cash_history_snark on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matterinc/plasma_cash_history_snark
[INFO] finished tweaking git repo https://github.com/matterinc/plasma_cash_history_snark
[INFO] tweaked toml for git repo https://github.com/matterinc/plasma_cash_history_snark written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/matterinc/plasma_cash_history_snark already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a231fd1dc55ebee53b3c7b54cd64fe57c042994270263e95380a08ad0d49d2fd
[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" "a231fd1dc55ebee53b3c7b54cd64fe57c042994270263e95380a08ad0d49d2fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a231fd1dc55ebee53b3c7b54cd64fe57c042994270263e95380a08ad0d49d2fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a231fd1dc55ebee53b3c7b54cd64fe57c042994270263e95380a08ad0d49d2fd", kill_on_drop: false }`
[INFO] [stdout] a231fd1dc55ebee53b3c7b54cd64fe57c042994270263e95380a08ad0d49d2fd
[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=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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--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] d27d6d7a9c05429f691e0b02456333e09a332fceca43293bbb43e5b5c1acd1bd
[INFO] running `Command { std: "docker" "start" "-a" "d27d6d7a9c05429f691e0b02456333e09a332fceca43293bbb43e5b5c1acd1bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-bigint v0.2.1
[INFO] [stderr]     Checking blake2-rfc v0.2.18 (https://github.com/gtank/blake2-rfc?rev=7a5b5fc99ae483a0043db7547fb79a6fa44b88a9#7a5b5fc9)
[INFO] [stderr]     Checking tiny-keccak v1.4.2
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking crossbeam v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling ff_derive v0.4.0 (https://github.com/matterinc/ff?tag=0.5#056a13b9)
[INFO] [stderr]     Checking ff v0.5.0 (https://github.com/matterinc/ff?tag=0.5#056a13b9)
[INFO] [stderr]     Checking pairing v0.16.2 (https://github.com/matterinc/pairing?tag=0.16.2#c2af46ca)
[INFO] [stderr]     Checking bellman v0.2.0 (https://github.com/matterinc/bellman?tag=0.2.0#6e45a4b2)
[INFO] [stderr]     Checking sapling-crypto v0.0.4 (https://github.com/matterinc/sapling-crypto?tag=0.0.4#6ac48e2f)
[INFO] [stderr]     Checking plasma_cash_history_snark v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.44s
[INFO] running `Command { std: "docker" "inspect" "d27d6d7a9c05429f691e0b02456333e09a332fceca43293bbb43e5b5c1acd1bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d27d6d7a9c05429f691e0b02456333e09a332fceca43293bbb43e5b5c1acd1bd", kill_on_drop: false }`
[INFO] [stdout] d27d6d7a9c05429f691e0b02456333e09a332fceca43293bbb43e5b5c1acd1bd