[INFO] fetching crate thruster-socketio 0.1.8...
[INFO] checking thruster-socketio-0.1.8 against 1.55.0 for beta-1.56-3
[INFO] extracting crate thruster-socketio 0.1.8 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate thruster-socketio 0.1.8 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate thruster-socketio 0.1.8
[INFO] finished tweaking crates.io crate thruster-socketio 0.1.8
[INFO] tweaked toml for crates.io crate thruster-socketio 0.1.8 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate thruster-socketio 0.1.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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 tokio-tungstenite v0.14.0
[INFO] [stderr]   Downloaded tokio-stream v0.1.6
[INFO] [stderr]   Downloaded backtrace v0.3.60
[INFO] [stderr]   Downloaded dotenv v0.13.0
[INFO] [stderr]   Downloaded parking_lot v0.4.8
[INFO] [stderr]   Downloaded chashmap v2.2.2
[INFO] [stderr]   Downloaded addr2line v0.15.2
[INFO] [stderr]   Downloaded hyper v0.14.8
[INFO] [stderr]   Downloaded object v0.25.2
[INFO] [stderr]   Downloaded thruster-proc v1.1.4
[INFO] [stderr]   Downloaded thruster v1.1.4
[INFO] [stderr]   Downloaded trezm-redis v0.15.2-alpha.0
[INFO] [stderr]   Downloaded rust-crypto v0.2.36
[INFO] [stderr]   Downloaded thruster-socketio-proc v0.1.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f8c364c4b14cdc4a3682a9057172337036acb6d8c288e691080053a7827dc6f
[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" "4f8c364c4b14cdc4a3682a9057172337036acb6d8c288e691080053a7827dc6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f8c364c4b14cdc4a3682a9057172337036acb6d8c288e691080053a7827dc6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f8c364c4b14cdc4a3682a9057172337036acb6d8c288e691080053a7827dc6f", kill_on_drop: false }`
[INFO] [stdout] 4f8c364c4b14cdc4a3682a9057172337036acb6d8c288e691080053a7827dc6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84cbbdc7fddc422824e775a02e5e3b560499ad334344cde9522af2c80f24028e
[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" "84cbbdc7fddc422824e775a02e5e3b560499ad334344cde9522af2c80f24028e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling tokio v1.6.1
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]     Checking addr2line v0.15.2
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking object v0.25.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking sha-1 v0.9.6
[INFO] [stderr]    Compiling thruster-socketio-proc v0.1.7
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking dashmap v4.0.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking templatify v0.2.3
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling uuid v0.7.4
[INFO] [stderr]     Checking parking_lot v0.4.8
[INFO] [stderr]     Checking chashmap v2.2.2
[INFO] [stderr]    Compiling thruster-proc v1.1.4
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/thruster-proc-1.1.4/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic)]
[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 `thruster-proc` 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" "84cbbdc7fddc422824e775a02e5e3b560499ad334344cde9522af2c80f24028e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84cbbdc7fddc422824e775a02e5e3b560499ad334344cde9522af2c80f24028e", kill_on_drop: false }`
[INFO] [stdout] 84cbbdc7fddc422824e775a02e5e3b560499ad334344cde9522af2c80f24028e
