[INFO] fetching crate glade_derive 0.1.0-alpha...
[INFO] testing glade_derive-0.1.0-alpha against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate glade_derive 0.1.0-alpha into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate glade_derive 0.1.0-alpha on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate glade_derive 0.1.0-alpha
[INFO] finished tweaking crates.io crate glade_derive 0.1.0-alpha
[INFO] tweaked toml for crates.io crate glade_derive 0.1.0-alpha written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded amplify v2.4.0
[INFO] [stderr]   Downloaded glade v0.1.0-alpha.3
[INFO] [stderr]   Downloaded amplify_derive v2.4.2
[INFO] [stderr]   Downloaded amplify_derive v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a10915a5357b9e0067bc2002cf4582d4642494a75e8e9a5560cfe93c7572775
[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" "6a10915a5357b9e0067bc2002cf4582d4642494a75e8e9a5560cfe93c7572775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a10915a5357b9e0067bc2002cf4582d4642494a75e8e9a5560cfe93c7572775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a10915a5357b9e0067bc2002cf4582d4642494a75e8e9a5560cfe93c7572775", kill_on_drop: false }`
[INFO] [stdout] 6a10915a5357b9e0067bc2002cf4582d4642494a75e8e9a5560cfe93c7572775
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8a19503d265d60e9252b0b5097bdfbae0ff20efce1870d9a2f02189e839831e
[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" "a8a19503d265d60e9252b0b5097bdfbae0ff20efce1870d9a2f02189e839831e", kill_on_drop: false }`
[INFO] [stderr]    Compiling amplify_derive v2.4.2
[INFO] [stderr]    Compiling amplify_derive v0.1.3
[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/amplify_derive-0.1.3/src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![feature(try_find)]
[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 `amplify_derive`
[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" "a8a19503d265d60e9252b0b5097bdfbae0ff20efce1870d9a2f02189e839831e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8a19503d265d60e9252b0b5097bdfbae0ff20efce1870d9a2f02189e839831e", kill_on_drop: false }`
[INFO] [stdout] a8a19503d265d60e9252b0b5097bdfbae0ff20efce1870d9a2f02189e839831e