[INFO] fetching crate ohx-addon-publish 0.0.1-preview...
[INFO] testing ohx-addon-publish-0.0.1-preview against 1.55.0 for beta-1.56-1
[INFO] extracting crate ohx-addon-publish 0.0.1-preview into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate ohx-addon-publish 0.0.1-preview 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 ohx-addon-publish 0.0.1-preview
[INFO] finished tweaking crates.io crate ohx-addon-publish 0.0.1-preview
[INFO] tweaked toml for crates.io crate ohx-addon-publish 0.0.1-preview written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate ohx-addon-publish 0.0.1-preview 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]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-codec v0.2.0-alpha.2
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.50
[INFO] [stderr]   Downloaded js-sys v0.3.27
[INFO] [stderr]   Downloaded tokio-timer v0.3.0-alpha.2
[INFO] [stderr]   Downloaded tokio-net v0.2.0-alpha.2
[INFO] [stderr]   Downloaded tokio-io v0.2.0-alpha.2
[INFO] [stderr]   Downloaded tokio-rustls v0.10.0
[INFO] [stderr]   Downloaded tokio-process v0.3.0-alpha.2
[INFO] [stderr]   Downloaded hyper v0.12.34
[INFO] [stderr]   Downloaded tokio-sync v0.2.0-alpha.2
[INFO] [stderr]   Downloaded indicatif v0.12.0
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.50
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.50
[INFO] [stderr]   Downloaded tracing-core v0.1.6
[INFO] [stderr]   Downloaded web-sys v0.3.27
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.50
[INFO] [stderr]   Downloaded reqwest v0.9.20
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.50
[INFO] [stderr]   Downloaded tokio-fs v0.2.0-alpha.2
[INFO] [stderr]   Downloaded tokio-macros v0.2.0-alpha.2
[INFO] [stderr]   Downloaded webbrowser v0.5.2
[INFO] [stderr]   Downloaded tokio v0.2.0-alpha.2
[INFO] [stderr]   Downloaded wasm-bindgen-webidl v0.2.50
[INFO] [stderr]   Downloaded tokio-executor v0.2.0-alpha.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] f8f64cb27fd4acd08903ca9d91c09ffcf72bfb6a248cbfaaa5c5f37621d804b1
[INFO] running `Command { std: "docker" "start" "-a" "f8f64cb27fd4acd08903ca9d91c09ffcf72bfb6a248cbfaaa5c5f37621d804b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8f64cb27fd4acd08903ca9d91c09ffcf72bfb6a248cbfaaa5c5f37621d804b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8f64cb27fd4acd08903ca9d91c09ffcf72bfb6a248cbfaaa5c5f37621d804b1", kill_on_drop: false }`
[INFO] [stdout] f8f64cb27fd4acd08903ca9d91c09ffcf72bfb6a248cbfaaa5c5f37621d804b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c12260c721e761306e99b4079fcf81bb0ec60282714b30f30b613d9831bdb79d
[INFO] running `Command { std: "docker" "start" "-a" "c12260c721e761306e99b4079fcf81bb0ec60282714b30f30b613d9831bdb79d", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling arc-swap v0.4.2
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling encode_unicode v0.3.6
[INFO] [stderr]    Compiling webbrowser v0.5.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling ring v0.16.9
[INFO] [stderr]    Compiling lock_api v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling hyper v0.12.34
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling termios v0.3.1
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling want v0.2.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling clicolors-control v1.0.1
[INFO] [stderr]    Compiling tracing-core v0.1.6
[INFO] [stderr]    Compiling futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling signal-hook-registry v1.1.1
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling tokio-executor v0.1.8
[INFO] [stderr]    Compiling crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling tokio-io v0.2.0-alpha.2
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling h2 v0.1.26
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling tokio-current-thread v0.1.6
[INFO] [stderr]    Compiling tokio-timer v0.2.11
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling tokio-codec v0.2.0-alpha.2
[INFO] [stderr]    Compiling tokio-threadpool v0.1.15
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling chrono v0.4.9
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling tokio-sync v0.2.0-alpha.2
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[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/tokio-sync-0.2.0-alpha.2/src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(async_await)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling publicsuffix v1.5.3
[INFO] [stderr]    Compiling console v0.9.0
[INFO] [stderr]    Compiling env_logger v0.6.2
[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 `tokio-sync` 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" "c12260c721e761306e99b4079fcf81bb0ec60282714b30f30b613d9831bdb79d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c12260c721e761306e99b4079fcf81bb0ec60282714b30f30b613d9831bdb79d", kill_on_drop: false }`
[INFO] [stdout] c12260c721e761306e99b4079fcf81bb0ec60282714b30f30b613d9831bdb79d