[INFO] cloning repository https://github.com/ngynkvn/mqtt-lights
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ngynkvn/mqtt-lights" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngynkvn%2Fmqtt-lights", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngynkvn%2Fmqtt-lights'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fcddac48cd3ba2f645ca4e92c5e982597c6c5a0d
[INFO] testing ngynkvn/mqtt-lights against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngynkvn%2Fmqtt-lights" "/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/ngynkvn/mqtt-lights on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ngynkvn/mqtt-lights
[INFO] finished tweaking git repo https://github.com/ngynkvn/mqtt-lights
[INFO] tweaked toml for git repo https://github.com/ngynkvn/mqtt-lights written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/ngynkvn/mqtt-lights already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "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] 2af0fcbc3eb1938ec2620113330799933ebd73e2b789d8fc6d07928a359b4305
[INFO] running `Command { std: "docker" "start" "-a" "2af0fcbc3eb1938ec2620113330799933ebd73e2b789d8fc6d07928a359b4305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2af0fcbc3eb1938ec2620113330799933ebd73e2b789d8fc6d07928a359b4305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2af0fcbc3eb1938ec2620113330799933ebd73e2b789d8fc6d07928a359b4305", kill_on_drop: false }`
[INFO] [stdout] 2af0fcbc3eb1938ec2620113330799933ebd73e2b789d8fc6d07928a359b4305
[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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bba542e1ac89069f6120b1a93d1dd8a95f726906f65ea787a583a1afa6d5e97
[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" "2bba542e1ac89069f6120b1a93d1dd8a95f726906f65ea787a583a1afa6d5e97", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]    Compiling heapless v0.7.1
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling object v0.26.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]    Compiling crossbeam v0.8.1
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling async-stream v0.3.2
[INFO] [stderr]    Compiling signal-hook-mio v0.2.1
[INFO] [stderr]    Compiling pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling crossterm v0.20.0
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling tracing-error v0.1.2
[INFO] [stderr]    Compiling color-spantrace v0.1.6
[INFO] [stderr]    Compiling tui v0.16.0
[INFO] [stderr]    Compiling clap v3.0.0-beta.2
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling color-eyre v0.5.11
[INFO] [stderr]    Compiling mqttrs v0.4.1
[INFO] [stderr]    Compiling lightshow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_associated_types)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lightshow` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "2bba542e1ac89069f6120b1a93d1dd8a95f726906f65ea787a583a1afa6d5e97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bba542e1ac89069f6120b1a93d1dd8a95f726906f65ea787a583a1afa6d5e97", kill_on_drop: false }`
[INFO] [stdout] 2bba542e1ac89069f6120b1a93d1dd8a95f726906f65ea787a583a1afa6d5e97