[INFO] fetching crate arya 0.0.3...
[INFO] testing arya-0.0.3 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate arya 0.0.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate arya 0.0.3 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arya 0.0.3
[INFO] finished tweaking crates.io crate arya 0.0.3
[INFO] tweaked toml for crates.io crate arya 0.0.3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 761b09640646ec97bbb3f2c4eb52641654830a36f667cdcadf8610623c8f0d96
[INFO] running `Command { std: "docker" "start" "-a" "761b09640646ec97bbb3f2c4eb52641654830a36f667cdcadf8610623c8f0d96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "761b09640646ec97bbb3f2c4eb52641654830a36f667cdcadf8610623c8f0d96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "761b09640646ec97bbb3f2c4eb52641654830a36f667cdcadf8610623c8f0d96", kill_on_drop: false }`
[INFO] [stdout] 761b09640646ec97bbb3f2c4eb52641654830a36f667cdcadf8610623c8f0d96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97fdaa87884ca808825a499a4995d1638209982a44d2410b8efba9aabda4ee73
[INFO] running `Command { std: "docker" "start" "-a" "97fdaa87884ca808825a499a4995d1638209982a44d2410b8efba9aabda4ee73", kill_on_drop: false }`
[INFO] [stderr]    Compiling arya v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:96:1
[INFO] [stdout]    |
[INFO] [stdout] 96 | / #![feature(
[INFO] [stdout] 97 | |     uniform_paths,
[INFO] [stdout] 98 | |     crate_visibility_modifier,
[INFO] [stdout] 99 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `uniform_paths` has been stable since 1.32.0 and no longer requires an attribute to enable
[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 `arya` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "97fdaa87884ca808825a499a4995d1638209982a44d2410b8efba9aabda4ee73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97fdaa87884ca808825a499a4995d1638209982a44d2410b8efba9aabda4ee73", kill_on_drop: false }`
[INFO] [stdout] 97fdaa87884ca808825a499a4995d1638209982a44d2410b8efba9aabda4ee73