[INFO] cloning repository https://github.com/bschwind/mqtt-broker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bschwind/mqtt-broker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbschwind%2Fmqtt-broker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbschwind%2Fmqtt-broker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 428ea9091aff1589147c9bf34080f58983df7209
[INFO] checking bschwind/mqtt-broker against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbschwind%2Fmqtt-broker" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bschwind/mqtt-broker on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bschwind/mqtt-broker
[INFO] finished tweaking git repo https://github.com/bschwind/mqtt-broker
[INFO] tweaked toml for git repo https://github.com/bschwind/mqtt-broker written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/bschwind/mqtt-broker already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--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 websocket-codec v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "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] 4aa83aeefaa0b3a7655d232fe8b0238320a91bf55382c7df42e24bd9755cfede
[INFO] running `Command { std: "docker" "start" "-a" "4aa83aeefaa0b3a7655d232fe8b0238320a91bf55382c7df42e24bd9755cfede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4aa83aeefaa0b3a7655d232fe8b0238320a91bf55382c7df42e24bd9755cfede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4aa83aeefaa0b3a7655d232fe8b0238320a91bf55382c7df42e24bd9755cfede", kill_on_drop: false }`
[INFO] [stdout] 4aa83aeefaa0b3a7655d232fe8b0238320a91bf55382c7df42e24bd9755cfede
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d70cd10c72a9c4bec3ba681ce2902afd49c1fb3cd2ee0d9c77cae52e3651e35f
[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" "d70cd10c72a9c4bec3ba681ce2902afd49c1fb3cd2ee0d9c77cae52e3651e35f", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling tokio v1.6.1
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking nanoid v0.3.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking websocket-codec v0.5.0
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stderr]     Checking futures v0.3.15
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling num_enum_derive v0.4.3
[INFO] [stderr]     Checking num_enum v0.4.3
[INFO] [stderr]     Checking mqtt-v5 v0.2.0 (/opt/rustwide/workdir/mqtt-v5)
[INFO] [stderr]     Checking mqtt-v5-broker v0.1.0 (/opt/rustwide/workdir/mqtt-v5-broker)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.40s
[INFO] running `Command { std: "docker" "inspect" "d70cd10c72a9c4bec3ba681ce2902afd49c1fb3cd2ee0d9c77cae52e3651e35f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d70cd10c72a9c4bec3ba681ce2902afd49c1fb3cd2ee0d9c77cae52e3651e35f", kill_on_drop: false }`
[INFO] [stdout] d70cd10c72a9c4bec3ba681ce2902afd49c1fb3cd2ee0d9c77cae52e3651e35f