[INFO] fetching crate crumble 0.10.2...
[INFO] testing crumble-0.10.2 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate crumble 0.10.2 into /workspace/builds/worker-87/source
[INFO] validating manifest of crates.io crate crumble 0.10.2 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 crumble 0.10.2
[INFO] finished tweaking crates.io crate crumble 0.10.2
[INFO] tweaked toml for crates.io crate crumble 0.10.2 written to /workspace/builds/worker-87/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] [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-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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] 312d8b91528fcfa4076e1ad717345366bf86d944911fd7d53fd920c195f53574
[INFO] running `Command { std: "docker" "start" "-a" "312d8b91528fcfa4076e1ad717345366bf86d944911fd7d53fd920c195f53574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "312d8b91528fcfa4076e1ad717345366bf86d944911fd7d53fd920c195f53574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "312d8b91528fcfa4076e1ad717345366bf86d944911fd7d53fd920c195f53574", kill_on_drop: false }`
[INFO] [stdout] 312d8b91528fcfa4076e1ad717345366bf86d944911fd7d53fd920c195f53574
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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] 13bde2d593e662a3f23e027752cbbf04c2ff8badb9f2dce4b8d7deb0cc922797
[INFO] running `Command { std: "docker" "start" "-a" "13bde2d593e662a3f23e027752cbbf04c2ff8badb9f2dce4b8d7deb0cc922797", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling crumble v0.10.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![feature(test)]
[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 `crumble` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "13bde2d593e662a3f23e027752cbbf04c2ff8badb9f2dce4b8d7deb0cc922797", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13bde2d593e662a3f23e027752cbbf04c2ff8badb9f2dce4b8d7deb0cc922797", kill_on_drop: false }`
[INFO] [stdout] 13bde2d593e662a3f23e027752cbbf04c2ff8badb9f2dce4b8d7deb0cc922797