[INFO] fetching crate readfilez 0.2.3...
[INFO] checking readfilez-0.2.3 against beta for pr-78714
[INFO] extracting crate readfilez 0.2.3 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate readfilez 0.2.3 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 crates.io crate readfilez 0.2.3
[INFO] finished tweaking crates.io crate readfilez 0.2.3
[INFO] tweaked toml for crates.io crate readfilez 0.2.3 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "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] 089678927c7e1ae730d1de4c4da42c80f980de631195a76072eefc72933241a7
[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" "089678927c7e1ae730d1de4c4da42c80f980de631195a76072eefc72933241a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "089678927c7e1ae730d1de4c4da42c80f980de631195a76072eefc72933241a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "089678927c7e1ae730d1de4c4da42c80f980de631195a76072eefc72933241a7", kill_on_drop: false }`
[INFO] [stdout] 089678927c7e1ae730d1de4c4da42c80f980de631195a76072eefc72933241a7
[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" "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] [stdout] 22a052db60a439707e6d6cb9b7200239d3f9f240a6b05441b737f9f2081870d0
[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" "22a052db60a439707e6d6cb9b7200239d3f9f240a6b05441b737f9f2081870d0", kill_on_drop: false }`
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]    Compiling delegate-attr v0.2.9
[INFO] [stderr]     Checking readfilez v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.94s
[INFO] running `Command { std: "docker" "inspect" "22a052db60a439707e6d6cb9b7200239d3f9f240a6b05441b737f9f2081870d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22a052db60a439707e6d6cb9b7200239d3f9f240a6b05441b737f9f2081870d0", kill_on_drop: false }`
[INFO] [stdout] 22a052db60a439707e6d6cb9b7200239d3f9f240a6b05441b737f9f2081870d0