[INFO] fetching crate rcommunity_core 0.0.1...
[INFO] testing rcommunity_core-0.0.1 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate rcommunity_core 0.0.1 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate rcommunity_core 0.0.1 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rcommunity_core 0.0.1
[INFO] finished tweaking crates.io crate rcommunity_core 0.0.1
[INFO] tweaked toml for crates.io crate rcommunity_core 0.0.1 written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa6154b4a1055fd5cf7dc5fcc8541669b3303ccec4ab262387c4c2e18b26ff4f
[INFO] running `Command { std: "docker" "start" "-a" "fa6154b4a1055fd5cf7dc5fcc8541669b3303ccec4ab262387c4c2e18b26ff4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa6154b4a1055fd5cf7dc5fcc8541669b3303ccec4ab262387c4c2e18b26ff4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa6154b4a1055fd5cf7dc5fcc8541669b3303ccec4ab262387c4c2e18b26ff4f", kill_on_drop: false }`
[INFO] [stdout] fa6154b4a1055fd5cf7dc5fcc8541669b3303ccec4ab262387c4c2e18b26ff4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ce7a9dd38cdedef4740d1b29dee64e70abd2f854a465d38b2bfd8507bfcad83
[INFO] running `Command { std: "docker" "start" "-a" "8ce7a9dd38cdedef4740d1b29dee64e70abd2f854a465d38b2bfd8507bfcad83", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling async-trait v0.1.53
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling rcommunity_core v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(associated_type_defaults)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(negative_impls)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `query::reaction`
[INFO] [stdout]  --> src/backend.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 |     error::Error, query::reaction, Enumerable, ItemType, Multiple, Numerical, Once, ReactionType,
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rcommunity_core` due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "8ce7a9dd38cdedef4740d1b29dee64e70abd2f854a465d38b2bfd8507bfcad83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ce7a9dd38cdedef4740d1b29dee64e70abd2f854a465d38b2bfd8507bfcad83", kill_on_drop: false }`
[INFO] [stdout] 8ce7a9dd38cdedef4740d1b29dee64e70abd2f854a465d38b2bfd8507bfcad83