[INFO] fetching crate flv-metadata 1.0.0...
[INFO] testing flv-metadata-1.0.0 against beta-2020-10-09 for beta-1.48-1
[INFO] extracting crate flv-metadata 1.0.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate flv-metadata 1.0.0 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flv-metadata 1.0.0
[INFO] finished tweaking crates.io crate flv-metadata 1.0.0
[INFO] tweaked toml for crates.io crate flv-metadata 1.0.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crc32c v0.4.0
[INFO] [stderr]   Downloaded flv-util v0.4.0
[INFO] [stderr]   Downloaded k8-obj-app v1.1.1
[INFO] [stderr]   Downloaded k8-obj-core v1.1.0
[INFO] [stderr]   Downloaded k8-obj-metadata v1.0.0
[INFO] [stderr]   Downloaded flv-future-aio v2.4.2
[INFO] [stderr]   Downloaded kf-protocol-transport v2.0.4
[INFO] [stderr]   Downloaded kf-protocol v1.1.3
[INFO] [stderr]   Downloaded flv-k8-partition v1.0.0
[INFO] [stderr]   Downloaded k8-flv-metadata v1.0.0
[INFO] [stderr]   Downloaded kf-protocol-fs v1.0.1
[INFO] [stderr]   Downloaded flv-util v0.2.1
[INFO] [stderr]   Downloaded flv-types v0.1.0
[INFO] [stderr]   Downloaded flv-util v0.1.1
[INFO] [stderr]   Downloaded flv-k8-spg v1.0.0
[INFO] [stderr]   Downloaded kf-protocol-message v0.1.1
[INFO] [stderr]   Downloaded kf-protocol-derive v0.1.1
[INFO] [stderr]   Downloaded kf-protocol-core v0.1.2
[INFO] [stderr]   Downloaded flv-k8-topic v1.0.0
[INFO] [stderr]   Downloaded kf-protocol-api v0.1.0
[INFO] [stderr]   Downloaded flv-k8-spu v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1efda5eead95426388ce6159c46bcbd59fb97e2b397a48ffeb0ce7b8c3cb33d
[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" "f1efda5eead95426388ce6159c46bcbd59fb97e2b397a48ffeb0ce7b8c3cb33d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1efda5eead95426388ce6159c46bcbd59fb97e2b397a48ffeb0ce7b8c3cb33d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1efda5eead95426388ce6159c46bcbd59fb97e2b397a48ffeb0ce7b8c3cb33d", kill_on_drop: false }`
[INFO] [stdout] f1efda5eead95426388ce6159c46bcbd59fb97e2b397a48ffeb0ce7b8c3cb33d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d035c51ac0b3e77de112518381d82f3b16d9a4474749c6dc83344219bb5fbd47
[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" "d035c51ac0b3e77de112518381d82f3b16d9a4474749c6dc83344219bb5fbd47", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling futures-io v0.3.6
[INFO] [stderr]    Compiling fastrand v1.4.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling data-encoding v2.3.0
[INFO] [stderr]    Compiling futures-sink v0.3.6
[INFO] [stderr]    Compiling async-task v4.0.2
[INFO] [stderr]    Compiling event-listener v2.5.1
[INFO] [stderr]    Compiling vec-arena v1.0.0
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling crc32c v0.4.0
[INFO] [stderr]    Compiling futures-timer v2.0.2
[INFO] [stderr]    Compiling tracing-core v0.1.17
[INFO] [stderr]    Compiling futures-task v0.3.6
[INFO] [stderr]    Compiling sharded-slab v0.0.9
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]    Compiling futures-channel v0.3.6
[INFO] [stderr]    Compiling paste v0.1.18
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]    Compiling async-channel v1.5.1
[INFO] [stderr]    Compiling nb-connect v1.0.2
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling futures-lite v1.11.1
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling polling v2.0.1
[INFO] [stderr]    Compiling tracing-log v0.1.1
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling flv-types v0.1.0
[INFO] [stderr]    Compiling async-executor v1.3.0
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling async-io v1.1.10
[INFO] [stderr]    Compiling kf-protocol-derive v0.1.1
[INFO] [stderr]    Compiling flv-util v0.1.1
[INFO] [stderr]    Compiling flv-util v0.2.1
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling async-global-executor v1.3.0
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling async-std v1.6.5
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling futures-macro v0.3.6
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling async-trait v0.1.41
[INFO] [stderr]    Compiling tracing v0.1.21
[INFO] [stderr]    Compiling pin-project v0.4.27
[INFO] [stderr]    Compiling futures-util v0.3.6
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling futures-executor v0.3.6
[INFO] [stderr]    Compiling futures v0.3.6
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling serde_qs v0.4.6
[INFO] [stderr]    Compiling tracing-serde v0.1.2
[INFO] [stderr]    Compiling kf-protocol-core v0.1.2
[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/kf-protocol-core-0.1.2/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(specialization)]
[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 `kf-protocol-core`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d035c51ac0b3e77de112518381d82f3b16d9a4474749c6dc83344219bb5fbd47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d035c51ac0b3e77de112518381d82f3b16d9a4474749c6dc83344219bb5fbd47", kill_on_drop: false }`
[INFO] [stdout] d035c51ac0b3e77de112518381d82f3b16d9a4474749c6dc83344219bb5fbd47
