[INFO] fetching crate dogged 0.2.0...
[INFO] testing dogged-0.2.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate dogged 0.2.0 into /workspace/builds/worker-81/source
[INFO] validating manifest of crates.io crate dogged 0.2.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dogged 0.2.0
[INFO] finished tweaking crates.io crate dogged 0.2.0
[INFO] tweaked toml for crates.io crate dogged 0.2.0 written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-2021-08-01" "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-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a1e5b9962113d35a846541ebdf2bed71f9400c9a52b8b782ac6e417f9a00d61
[INFO] running `Command { std: "docker" "start" "-a" "6a1e5b9962113d35a846541ebdf2bed71f9400c9a52b8b782ac6e417f9a00d61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a1e5b9962113d35a846541ebdf2bed71f9400c9a52b8b782ac6e417f9a00d61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a1e5b9962113d35a846541ebdf2bed71f9400c9a52b8b782ac6e417f9a00d61", kill_on_drop: false }`
[INFO] [stdout] 6a1e5b9962113d35a846541ebdf2bed71f9400c9a52b8b782ac6e417f9a00d61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61cf3462b0afc2d245d8e01ec2227d10451da2eb4b6e3d410c4e6c4be0ceb07c
[INFO] running `Command { std: "docker" "start" "-a" "61cf3462b0afc2d245d8e01ec2227d10451da2eb4b6e3d410c4e6c4be0ceb07c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling dogged v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "61cf3462b0afc2d245d8e01ec2227d10451da2eb4b6e3d410c4e6c4be0ceb07c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61cf3462b0afc2d245d8e01ec2227d10451da2eb4b6e3d410c4e6c4be0ceb07c", kill_on_drop: false }`
[INFO] [stdout] 61cf3462b0afc2d245d8e01ec2227d10451da2eb4b6e3d410c4e6c4be0ceb07c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f6701be3f5d4d4ae6fe0403d6efef6b2b8d26c8943164847fcd5944d24616b8
[INFO] running `Command { std: "docker" "start" "-a" "6f6701be3f5d4d4ae6fe0403d6efef6b2b8d26c8943164847fcd5944d24616b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling dogged v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(test, 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 `dogged` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "6f6701be3f5d4d4ae6fe0403d6efef6b2b8d26c8943164847fcd5944d24616b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f6701be3f5d4d4ae6fe0403d6efef6b2b8d26c8943164847fcd5944d24616b8", kill_on_drop: false }`
[INFO] [stdout] 6f6701be3f5d4d4ae6fe0403d6efef6b2b8d26c8943164847fcd5944d24616b8
