[INFO] fetching crate swarm-bot-packets 0.2.0...
[INFO] testing swarm-bot-packets-0.2.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate swarm-bot-packets 0.2.0 into /workspace/builds/worker-52/source
[INFO] validating manifest of crates.io crate swarm-bot-packets 0.2.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate swarm-bot-packets 0.2.0
[INFO] finished tweaking crates.io crate swarm-bot-packets 0.2.0
[INFO] tweaked toml for crates.io crate swarm-bot-packets 0.2.0 written to /workspace/builds/worker-52/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded swarm-bot-packets-macro v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cdda4acaae60542b7eef7e9eefab6ad75a3f830812f5d5fd9e465ed20a41f64
[INFO] running `Command { std: "docker" "start" "-a" "0cdda4acaae60542b7eef7e9eefab6ad75a3f830812f5d5fd9e465ed20a41f64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cdda4acaae60542b7eef7e9eefab6ad75a3f830812f5d5fd9e465ed20a41f64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cdda4acaae60542b7eef7e9eefab6ad75a3f830812f5d5fd9e465ed20a41f64", kill_on_drop: false }`
[INFO] [stdout] 0cdda4acaae60542b7eef7e9eefab6ad75a3f830812f5d5fd9e465ed20a41f64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 666a80e21965e63bc3011efc54cfcb582eb8a0672f519ba9894ae74bd0664356
[INFO] running `Command { std: "docker" "start" "-a" "666a80e21965e63bc3011efc54cfcb582eb8a0672f519ba9894ae74bd0664356", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling mio v0.8.0
[INFO] [stderr]    Compiling parking_lot v0.12.0
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling swarm-bot-packets-macro v0.1.2
[INFO] [stderr]    Compiling tokio v1.17.0
[INFO] [stderr]    Compiling swarm-bot-packets v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(cursor_remaining)]
[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 `swarm-bot-packets` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "666a80e21965e63bc3011efc54cfcb582eb8a0672f519ba9894ae74bd0664356", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "666a80e21965e63bc3011efc54cfcb582eb8a0672f519ba9894ae74bd0664356", kill_on_drop: false }`
[INFO] [stdout] 666a80e21965e63bc3011efc54cfcb582eb8a0672f519ba9894ae74bd0664356