[INFO] fetching crate finally 0.0.1...
[INFO] testing finally-0.0.1 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate finally 0.0.1 into /workspace/builds/worker-34/source
[INFO] validating manifest of crates.io crate finally 0.0.1 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 finally 0.0.1
[INFO] finished tweaking crates.io crate finally 0.0.1
[INFO] tweaked toml for crates.io crate finally 0.0.1 written to /workspace/builds/worker-34/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] 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] 2ad4a34ac0565ae02fc6606964e2179df389070cd81d34497c4ddd26008cb7a8
[INFO] running `Command { std: "docker" "start" "-a" "2ad4a34ac0565ae02fc6606964e2179df389070cd81d34497c4ddd26008cb7a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ad4a34ac0565ae02fc6606964e2179df389070cd81d34497c4ddd26008cb7a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ad4a34ac0565ae02fc6606964e2179df389070cd81d34497c4ddd26008cb7a8", kill_on_drop: false }`
[INFO] [stdout] 2ad4a34ac0565ae02fc6606964e2179df389070cd81d34497c4ddd26008cb7a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] ff9733c75e4aec8f381c47c83581d8753c9e20ad7679ece25dbe31ca94c77dd3
[INFO] running `Command { std: "docker" "start" "-a" "ff9733c75e4aec8f381c47c83581d8753c9e20ad7679ece25dbe31ca94c77dd3", kill_on_drop: false }`
[INFO] [stderr]    Compiling finally v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: cannot find attribute `unsafe_destructor` in this scope
[INFO] [stdout]   --> src/lib.rs:97:3
[INFO] [stdout]    |
[INFO] [stdout] 97 | #[unsafe_destructor]
[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:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | #![feature(unsafe_destructor)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `finally` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "ff9733c75e4aec8f381c47c83581d8753c9e20ad7679ece25dbe31ca94c77dd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff9733c75e4aec8f381c47c83581d8753c9e20ad7679ece25dbe31ca94c77dd3", kill_on_drop: false }`
[INFO] [stdout] ff9733c75e4aec8f381c47c83581d8753c9e20ad7679ece25dbe31ca94c77dd3
