[INFO] fetching crate bitfield-register 0.2.1...
[INFO] checking bitfield-register-0.2.1 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] extracting crate bitfield-register 0.2.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate bitfield-register 0.2.1 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bitfield-register 0.2.1
[INFO] finished tweaking crates.io crate bitfield-register 0.2.1
[INFO] tweaked toml for crates.io crate bitfield-register 0.2.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79bf79572ddfff65be46dcb4912841fa52a01e0c6f7df8a8fe4d1e4167ba8320
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "79bf79572ddfff65be46dcb4912841fa52a01e0c6f7df8a8fe4d1e4167ba8320", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79bf79572ddfff65be46dcb4912841fa52a01e0c6f7df8a8fe4d1e4167ba8320", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79bf79572ddfff65be46dcb4912841fa52a01e0c6f7df8a8fe4d1e4167ba8320", kill_on_drop: false }`
[INFO] [stdout] 79bf79572ddfff65be46dcb4912841fa52a01e0c6f7df8a8fe4d1e4167ba8320
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd3ae946fedc0e4df41a80a3ec3c3e1e6e737f64efeb71b9b7fdd65d1a35ef33
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fd3ae946fedc0e4df41a80a3ec3c3e1e6e737f64efeb71b9b7fdd65d1a35ef33", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitfield-register-macro v0.2.1
[INFO] [stdout] error[E0774]: `derive` may only be applied to structs, enums and unions
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bitfield-register-macro-0.2.1/src/lib.rs:337:5
[INFO] [stdout]     |
[INFO] [stdout] 337 |     #[derive(Debug)]
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bitfield-register-macro`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0774`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "fd3ae946fedc0e4df41a80a3ec3c3e1e6e737f64efeb71b9b7fdd65d1a35ef33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd3ae946fedc0e4df41a80a3ec3c3e1e6e737f64efeb71b9b7fdd65d1a35ef33", kill_on_drop: false }`
[INFO] [stdout] fd3ae946fedc0e4df41a80a3ec3c3e1e6e737f64efeb71b9b7fdd65d1a35ef33