[INFO] cloning repository https://github.com/flosse/tokio-modbus-issue-3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/flosse/tokio-modbus-issue-3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflosse%2Ftokio-modbus-issue-3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflosse%2Ftokio-modbus-issue-3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] db29459a11107d0461e24a965867e85383be2f9c
[INFO] checking flosse/tokio-modbus-issue-3 against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflosse%2Ftokio-modbus-issue-3" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/flosse/tokio-modbus-issue-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 git repo https://github.com/flosse/tokio-modbus-issue-3
[INFO] finished tweaking git repo https://github.com/flosse/tokio-modbus-issue-3
[INFO] tweaked toml for git repo https://github.com/flosse/tokio-modbus-issue-3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/flosse/tokio-modbus-issue-3 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 mio-serial v3.1.0
[INFO] [stderr]   Downloaded tokio-serial v3.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 0e3bb1e18c3c5eba1dfb17a23b259af935bf943c9161ab73a12562248e0119d2
[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" "0e3bb1e18c3c5eba1dfb17a23b259af935bf943c9161ab73a12562248e0119d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e3bb1e18c3c5eba1dfb17a23b259af935bf943c9161ab73a12562248e0119d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e3bb1e18c3c5eba1dfb17a23b259af935bf943c9161ab73a12562248e0119d2", kill_on_drop: false }`
[INFO] [stdout] 0e3bb1e18c3c5eba1dfb17a23b259af935bf943c9161ab73a12562248e0119d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 6e1ff79a60de30be362a1696c34a8fe65e3d9911fce414c202c583ba0e00f88b
[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" "6e1ff79a60de30be362a1696c34a8fe65e3d9911fce414c202c583ba0e00f88b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking smallvec v0.6.7
[INFO] [stderr]     Checking nix v0.11.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.9
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking tokio-reactor v0.1.7
[INFO] [stderr]     Checking tokio-uds v0.2.4
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio v0.1.13
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking serialport v3.1.0
[INFO] [stderr]     Checking mio-serial v3.1.0
[INFO] [stderr]     Checking tokio-serial v3.1.0
[INFO] [stderr]     Checking tokio-modbus v0.2.2 (https://github.com/slowtec/tokio-modbus?branch=master#e4ff598b)
[INFO] [stderr]     Checking tokio-modbus-issue-3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.11s
[INFO] running `Command { std: "docker" "inspect" "6e1ff79a60de30be362a1696c34a8fe65e3d9911fce414c202c583ba0e00f88b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e1ff79a60de30be362a1696c34a8fe65e3d9911fce414c202c583ba0e00f88b", kill_on_drop: false }`
[INFO] [stdout] 6e1ff79a60de30be362a1696c34a8fe65e3d9911fce414c202c583ba0e00f88b