[INFO] cloning repository https://github.com/GeneralSet/website
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GeneralSet/website" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGeneralSet%2Fwebsite", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGeneralSet%2Fwebsite'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 38a0b4fc9324e8bbd07be20ad1be82ee0fbd6467
[INFO] testing GeneralSet/website against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGeneralSet%2Fwebsite" "/workspace/builds/worker-46/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-46/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GeneralSet/website on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/GeneralSet/website
[INFO] finished tweaking git repo https://github.com/GeneralSet/website
[INFO] tweaked toml for git repo https://github.com/GeneralSet/website written to /workspace/builds/worker-46/source/Cargo.toml
[INFO] crate git repo https://github.com/GeneralSet/website already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6a9e485defec841c8b94e23edc73dfc62f63bbec0cf7b8988aa01e67162d790
[INFO] running `Command { std: "docker" "start" "-a" "d6a9e485defec841c8b94e23edc73dfc62f63bbec0cf7b8988aa01e67162d790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6a9e485defec841c8b94e23edc73dfc62f63bbec0cf7b8988aa01e67162d790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6a9e485defec841c8b94e23edc73dfc62f63bbec0cf7b8988aa01e67162d790", kill_on_drop: false }`
[INFO] [stdout] d6a9e485defec841c8b94e23edc73dfc62f63bbec0cf7b8988aa01e67162d790
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db95f0921a5b298cc683bb0a49604228baa64d4b132c59b4167f0012e17327ec
[INFO] running `Command { std: "docker" "start" "-a" "db95f0921a5b298cc683bb0a49604228baa64d4b132c59b4167f0012e17327ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling cfg-if v0.1.7
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling rand_core v0.4.0
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[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling rustc-demangle v0.1.13
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[INFO] [stderr]    Compiling quick-error v1.2.2
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[INFO] [stderr]    Compiling owning_ref v0.4.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
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[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling humantime v1.2.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.8
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]    Compiling lru-cache v0.1.1
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[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling unicase v1.4.2
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[INFO] [stderr]    Compiling actix-web v0.7.18
[INFO] [stderr]    Compiling encoding v0.2.33
[INFO] [stderr]    Compiling tokio-executor v0.1.6
[INFO] [stderr]    Compiling tokio-sync v0.1.3
[INFO] [stderr]    Compiling tower-service v0.1.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling brotli-sys v0.3.2
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[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling rand_os v0.1.2
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling socket2 v0.3.8
[INFO] [stderr]    Compiling hostname v0.1.5
[INFO] [stderr]    Compiling signal-hook v0.1.8
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling atty v0.2.11
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[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling tokio-timer v0.2.10
[INFO] [stderr]    Compiling tokio-current-thread v0.1.5
[INFO] [stderr]    Compiling resolv-conf v0.6.2
[INFO] [stderr]    Compiling bytes v0.4.11
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling base64 v0.10.1
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[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling http v0.1.16
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling mime v0.3.13
[INFO] [stderr]    Compiling flate2 v1.0.6
[INFO] [stderr]    Compiling tokio-threadpool v0.1.12
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling uuid v0.7.2
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling env_logger v0.6.0
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling tokio-fs v0.1.6
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio-signal v0.2.7
[INFO] [stderr]    Compiling h2 v0.1.16
[INFO] [stderr]    Compiling tokio v0.1.16
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.38
[INFO] [stderr]    Compiling cookie v0.11.0
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.38
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling v_escape_derive v0.2.1
[INFO] [stderr]    Compiling actix_derive v0.3.2
[INFO] [stderr]    Compiling brotli2 v0.3.2
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.38
[INFO] [stderr]    Compiling trust-dns-proto v0.6.3
[INFO] [stderr]    Compiling trust-dns-proto v0.5.0
[INFO] [stderr]    Compiling set v0.1.0 (https://github.com/GeneralSet/Set#8a434fc2)
[INFO] [stderr]    Compiling trust-dns-resolver v0.10.3
[INFO] [stderr]    Compiling actix v0.7.9
[INFO] [stderr]    Compiling actix-net v0.2.6
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling serde_urlencoded v0.5.4
[INFO] [stderr]    Compiling multiplayer_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(type_alias_enum_variants)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `type_alias_enum_variants` has been stable since 1.37.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(vec_remove_item)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `remove_item` found for struct `Vec<&str>` in the current scope
[INFO] [stdout]    --> src/server.rs:280:23
[INFO] [stdout]     |
[INFO] [stdout] 280 |                 board.remove_item(&card);
[INFO] [stdout]     |                       ^^^^^^^^^^^ method not found in `Vec<&str>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `multiplayer_server`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "db95f0921a5b298cc683bb0a49604228baa64d4b132c59b4167f0012e17327ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db95f0921a5b298cc683bb0a49604228baa64d4b132c59b4167f0012e17327ec", kill_on_drop: false }`
[INFO] [stdout] db95f0921a5b298cc683bb0a49604228baa64d4b132c59b4167f0012e17327ec
