[INFO] cloning repository https://github.com/benesch/rust-play
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/benesch/rust-play" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenesch%2Frust-play", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenesch%2Frust-play'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6149e7277905e77e2bd2b9fc4670cae48ec197c3
[INFO] checking benesch/rust-play against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenesch%2Frust-play" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benesch/rust-play on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/benesch/rust-play
[INFO] finished tweaking git repo https://github.com/benesch/rust-play
[INFO] tweaked toml for git repo https://github.com/benesch/rust-play written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/benesch/rust-play already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/benesch/timely-dataflow.git`
[INFO] [stderr]     Updating git repository `https://github.com/TimelyDataflow/differential-dataflow.git`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded abomonation v0.7.3
[INFO] [stderr]   Downloaded abomonation_derive v0.3.0
[INFO] [stderr]   Downloaded timely_sort v0.1.6
[INFO] [stderr]   Downloaded abomonation_derive v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7795b43ad50d0807ed24e6bd852edd7edaa2a80fbd09d374164f754ef0dc8f5
[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" "a7795b43ad50d0807ed24e6bd852edd7edaa2a80fbd09d374164f754ef0dc8f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7795b43ad50d0807ed24e6bd852edd7edaa2a80fbd09d374164f754ef0dc8f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7795b43ad50d0807ed24e6bd852edd7edaa2a80fbd09d374164f754ef0dc8f5", kill_on_drop: false }`
[INFO] [stdout] a7795b43ad50d0807ed24e6bd852edd7edaa2a80fbd09d374164f754ef0dc8f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "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] ea32929c2daae3fcd2273f7b403bf99740b41d0e0850bdc31780ddf16fba7a29
[INFO] running `Command { std: "docker" "start" "-a" "ea32929c2daae3fcd2273f7b403bf99740b41d0e0850bdc31780ddf16fba7a29", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.1
[INFO] [stderr]    Compiling syn v1.0.3
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]     Checking timely_bytes v0.10.0 (https://github.com/benesch/timely-dataflow.git?branch=sample#775c22d6)
[INFO] [stderr]     Checking abomonation v0.7.3
[INFO] [stderr]     Checking timely_logging v0.10.0 (https://github.com/benesch/timely-dataflow.git?branch=sample#775c22d6)
[INFO] [stderr]     Checking timely_sort v0.1.6
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling abomonation_derive v0.3.0
[INFO] [stderr]    Compiling abomonation_derive v0.4.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]     Checking timely_communication v0.10.0 (https://github.com/benesch/timely-dataflow.git?branch=sample#775c22d6)
[INFO] [stderr]     Checking timely v0.10.0 (https://github.com/benesch/timely-dataflow.git?branch=sample#775c22d6)
[INFO] [stderr]     Checking differential-dataflow v0.10.0 (https://github.com/TimelyDataflow/differential-dataflow.git#c78b860a)
[INFO] [stderr]     Checking rust-play v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.16s
[INFO] running `Command { std: "docker" "inspect" "ea32929c2daae3fcd2273f7b403bf99740b41d0e0850bdc31780ddf16fba7a29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea32929c2daae3fcd2273f7b403bf99740b41d0e0850bdc31780ddf16fba7a29", kill_on_drop: false }`
[INFO] [stdout] ea32929c2daae3fcd2273f7b403bf99740b41d0e0850bdc31780ddf16fba7a29