[INFO] fetching crate arcon_messages 0.1.2... [INFO] testing arcon_messages-0.1.2 against beta-2021-09-08 for beta-1.56-1 [INFO] extracting crate arcon_messages 0.1.2 into /workspace/builds/worker-15/source [INFO] validating manifest of crates.io crate arcon_messages 0.1.2 on toolchain beta-2021-09-08 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate arcon_messages 0.1.2 [INFO] finished tweaking crates.io crate arcon_messages 0.1.2 [INFO] tweaked toml for crates.io crate arcon_messages 0.1.2 written to /workspace/builds/worker-15/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded arr_macro v0.1.3 [INFO] [stderr] Downloaded oncemutex v0.1.1 [INFO] [stderr] Downloaded kompact-actor-derive v0.8.1 [INFO] [stderr] Downloaded synchronoise v1.0.0 [INFO] [stderr] Downloaded executors v0.5.3 [INFO] [stderr] Downloaded as_num v0.2.5 [INFO] [stderr] Downloaded bitfields v0.2.0 [INFO] [stderr] Downloaded tokio-retry v0.2.0 [INFO] [stderr] Downloaded protoc-rust v2.25.1 [INFO] [stderr] Downloaded kompact-component-derive v0.8.1 [INFO] [stderr] Downloaded spaniel v0.1.0 [INFO] [stderr] Downloaded kompact v0.8.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2a0d68ee4b293df0bb0a5e89e7f37cbfcf3967886b4b86a4161a0089f08761c6 [INFO] running `Command { std: "docker" "start" "-a" "2a0d68ee4b293df0bb0a5e89e7f37cbfcf3967886b4b86a4161a0089f08761c6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2a0d68ee4b293df0bb0a5e89e7f37cbfcf3967886b4b86a4161a0089f08761c6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2a0d68ee4b293df0bb0a5e89e7f37cbfcf3967886b4b86a4161a0089f08761c6", kill_on_drop: false }` [INFO] [stdout] 2a0d68ee4b293df0bb0a5e89e7f37cbfcf3967886b4b86a4161a0089f08761c6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f57c6f721359ba62810ec87e33324ba3f1e7b97862274d72d832d9b5b9626ba7 [INFO] running `Command { std: "docker" "start" "-a" "f57c6f721359ba62810ec87e33324ba3f1e7b97862274d72d832d9b5b9626ba7", kill_on_drop: false }` [INFO] [stderr] Compiling protobuf v2.25.1 [INFO] [stderr] Compiling slog v2.7.0 [INFO] [stderr] Compiling oncemutex v0.1.1 [INFO] [stderr] Compiling as_num v0.2.5 [INFO] [stderr] Compiling bitfields v0.2.0 [INFO] [stderr] Compiling sequence_trie v0.3.6 [INFO] [stderr] Compiling arc-swap v0.3.11 [INFO] [stderr] Compiling crossbeam-utils v0.6.6 [INFO] [stderr] Compiling which v4.2.2 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling threadpool v1.8.1 [INFO] [stderr] Compiling tokio-io v0.1.13 [INFO] [stderr] Compiling arr_macro_impl v0.1.3 [INFO] [stderr] Compiling uuid v0.7.4 [INFO] [stderr] Compiling kompact-component-derive v0.8.1 [INFO] [stderr] Compiling kompact-actor-derive v0.8.1 [INFO] [stderr] Compiling tokio-threadpool v0.1.18 [INFO] [stderr] Compiling tokio-retry v0.2.0 [INFO] [stderr] Compiling protoc v2.25.1 [INFO] [stderr] Compiling tokio-codec v0.1.2 [INFO] [stderr] Compiling spaniel v0.1.0 [INFO] [stderr] Compiling tokio-fs v0.1.7 [INFO] [stderr] Compiling crossbeam-queue v0.1.2 [INFO] [stderr] Compiling crossbeam-channel v0.3.9 [INFO] [stderr] Compiling tokio-reactor v0.1.12 [INFO] [stderr] Compiling mio-uds v0.6.8 [INFO] [stderr] Compiling synchronoise v1.0.0 [INFO] [stderr] Compiling slog-term v2.8.0 [INFO] [stderr] Compiling slog-async v2.7.0 [INFO] [stderr] Compiling tokio-uds v0.2.7 [INFO] [stderr] Compiling tokio-udp v0.1.6 [INFO] [stderr] Compiling tokio-tcp v0.1.4 [INFO] [stderr] Compiling arr_macro v0.1.3 [INFO] [stderr] Compiling executors v0.5.3 [INFO] [stderr] Compiling tokio v0.1.22 [INFO] [stderr] Compiling kompact v0.8.1 [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kompact-0.8.1/src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kompact-0.8.1/src/lib.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | #![feature(unsized_locals)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kompact-0.8.1/src/lib.rs:10:1 [INFO] [stdout] | [INFO] [stdout] 10 | #![feature(drain_filter)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kompact-0.8.1/src/lib.rs:11:1 [INFO] [stdout] | [INFO] [stdout] 11 | #![feature(never_type)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `kompact` due to 5 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "f57c6f721359ba62810ec87e33324ba3f1e7b97862274d72d832d9b5b9626ba7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f57c6f721359ba62810ec87e33324ba3f1e7b97862274d72d832d9b5b9626ba7", kill_on_drop: false }` [INFO] [stdout] f57c6f721359ba62810ec87e33324ba3f1e7b97862274d72d832d9b5b9626ba7