[INFO] fetching crate tabwriter-bin 0.2.1...
[INFO] testing tabwriter-bin-0.2.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate tabwriter-bin 0.2.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tabwriter-bin 0.2.1 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tabwriter-bin 0.2.1
[INFO] finished tweaking crates.io crate tabwriter-bin 0.2.1
[INFO] tweaked toml for crates.io crate tabwriter-bin 0.2.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate tabwriter-bin 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--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-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fca29e2370a92dd89a6caad44c4d5375caa15af005b4e259d8909ebfc146a3d
[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" "5fca29e2370a92dd89a6caad44c4d5375caa15af005b4e259d8909ebfc146a3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fca29e2370a92dd89a6caad44c4d5375caa15af005b4e259d8909ebfc146a3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fca29e2370a92dd89a6caad44c4d5375caa15af005b4e259d8909ebfc146a3d", kill_on_drop: false }`
[INFO] [stdout] 5fca29e2370a92dd89a6caad44c4d5375caa15af005b4e259d8909ebfc146a3d
[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=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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] b78f194087b1861d2b65be7350f3e27d7c3437b62486ccf3fd0a28c12fd5c6cc
[INFO] running `Command { std: "docker" "start" "-a" "b78f194087b1861d2b65be7350f3e27d7c3437b62486ccf3fd0a28c12fd5c6cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling regex-syntax v0.6.13
[INFO] [stderr]    Compiling tabwriter v1.2.1
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling regex v1.3.3
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling tabwriter-bin v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.83s
[INFO] running `Command { std: "docker" "inspect" "b78f194087b1861d2b65be7350f3e27d7c3437b62486ccf3fd0a28c12fd5c6cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b78f194087b1861d2b65be7350f3e27d7c3437b62486ccf3fd0a28c12fd5c6cc", kill_on_drop: false }`
[INFO] [stdout] b78f194087b1861d2b65be7350f3e27d7c3437b62486ccf3fd0a28c12fd5c6cc
[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=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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 219a39c35671aa326482050ae6ad11d7988e130f36b5d800a7570212fad67c38
[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" "219a39c35671aa326482050ae6ad11d7988e130f36b5d800a7570212fad67c38", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] running `Command { std: "docker" "inspect" "219a39c35671aa326482050ae6ad11d7988e130f36b5d800a7570212fad67c38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "219a39c35671aa326482050ae6ad11d7988e130f36b5d800a7570212fad67c38", kill_on_drop: false }`
[INFO] [stdout] 219a39c35671aa326482050ae6ad11d7988e130f36b5d800a7570212fad67c38
[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=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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 864228a1969fe1e90148d9abc5ff301ceea5680ed955d0141eef6bf1b4de7e69
[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" "864228a1969fe1e90148d9abc5ff301ceea5680ed955d0141eef6bf1b4de7e69", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] running `Command { std: "docker" "inspect" "864228a1969fe1e90148d9abc5ff301ceea5680ed955d0141eef6bf1b4de7e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "864228a1969fe1e90148d9abc5ff301ceea5680ed955d0141eef6bf1b4de7e69", kill_on_drop: false }`
[INFO] [stdout] 864228a1969fe1e90148d9abc5ff301ceea5680ed955d0141eef6bf1b4de7e69