[INFO] fetching crate puroro-plugin 0.4.1...
[INFO] testing puroro-plugin-0.4.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate puroro-plugin 0.4.1 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate puroro-plugin 0.4.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate puroro-plugin 0.4.1
[INFO] finished tweaking crates.io crate puroro-plugin 0.4.1
[INFO] tweaked toml for crates.io crate puroro-plugin 0.4.1 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate crates.io crate puroro-plugin 0.4.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded askama_derive v0.11.0
[INFO] [stderr]   Downloaded askama v0.11.0
[INFO] [stderr]   Downloaded askama_escape v0.10.2
[INFO] [stderr]   Downloaded askama_shared v0.12.0
[INFO] [stderr]   Downloaded puroro-protobuf-compiled v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 26d79dd9e5e837949217714eee6e59960b62fd0351eb8e997ed7691fe96cdfc7
[INFO] running `Command { std: "docker" "start" "-a" "26d79dd9e5e837949217714eee6e59960b62fd0351eb8e997ed7691fe96cdfc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26d79dd9e5e837949217714eee6e59960b62fd0351eb8e997ed7691fe96cdfc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26d79dd9e5e837949217714eee6e59960b62fd0351eb8e997ed7691fe96cdfc7", kill_on_drop: false }`
[INFO] [stdout] 26d79dd9e5e837949217714eee6e59960b62fd0351eb8e997ed7691fe96cdfc7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 791b947ecf373bada43b374a2d75f8b8000984372c59281007a73cc4063e0603
[INFO] running `Command { std: "docker" "start" "-a" "791b947ecf373bada43b374a2d75f8b8000984372c59281007a73cc4063e0603", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling askama_escape v0.10.2
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling funty v1.2.0
[INFO] [stderr]    Compiling humansize v1.1.1
[INFO] [stderr]    Compiling bumpalo v3.9.1
[INFO] [stderr]    Compiling nom v7.1.0
[INFO] [stderr]    Compiling wyz v0.4.0
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling bitvec v0.22.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling puroro v0.4.1
[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/puroro-0.4.1/src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(backtrace)]
[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/puroro-0.4.1/src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(generic_associated_types)]
[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/puroro-0.4.1/src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![feature(type_alias_impl_trait)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `puroro` due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "791b947ecf373bada43b374a2d75f8b8000984372c59281007a73cc4063e0603", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "791b947ecf373bada43b374a2d75f8b8000984372c59281007a73cc4063e0603", kill_on_drop: false }`
[INFO] [stdout] 791b947ecf373bada43b374a2d75f8b8000984372c59281007a73cc4063e0603