[INFO] fetching crate m-o 1.0.0...
[INFO] checking m-o-1.0.0 against beta for pr-78714
[INFO] extracting crate m-o 1.0.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate m-o 1.0.0 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 m-o 1.0.0
[INFO] finished tweaking crates.io crate m-o 1.0.0
[INFO] tweaked toml for crates.io crate m-o 1.0.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate m-o 1.0.0 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]  Downloading crates ...
[INFO] [stderr]   Downloaded stackvector v1.0.6
[INFO] [stderr]   Downloaded pretty v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", 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] 745a393a2989e28df5b2fc0b6f91fb29522497b32ffad954be449d29327354c8
[INFO] running `Command { std: "docker" "start" "-a" "745a393a2989e28df5b2fc0b6f91fb29522497b32ffad954be449d29327354c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "745a393a2989e28df5b2fc0b6f91fb29522497b32ffad954be449d29327354c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "745a393a2989e28df5b2fc0b6f91fb29522497b32ffad954be449d29327354c8", kill_on_drop: false }`
[INFO] [stdout] 745a393a2989e28df5b2fc0b6f91fb29522497b32ffad954be449d29327354c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae3aee56aceefbafa33ed04351e9100808d923b713a1eb6211bbb2fffd185dcd
[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" "ae3aee56aceefbafa33ed04351e9100808d923b713a1eb6211bbb2fffd185dcd", 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] [stderr]    Compiling proc-macro2 v1.0.2
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking static_assertions v0.3.4
[INFO] [stderr]     Checking typed-arena v1.5.0
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]    Compiling nom v5.0.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]    Compiling stackvector v1.0.6
[INFO] [stderr]    Compiling lexical-core v0.4.3
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking pretty v0.6.0
[INFO] [stderr]     Checking termion v1.5.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.1
[INFO] [stderr]     Checking structopt v0.3.1
[INFO] [stderr]     Checking m-o v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.49s
[INFO] running `Command { std: "docker" "inspect" "ae3aee56aceefbafa33ed04351e9100808d923b713a1eb6211bbb2fffd185dcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae3aee56aceefbafa33ed04351e9100808d923b713a1eb6211bbb2fffd185dcd", kill_on_drop: false }`
[INFO] [stdout] ae3aee56aceefbafa33ed04351e9100808d923b713a1eb6211bbb2fffd185dcd