[INFO] fetching crate addr-hal 0.1.1...
[INFO] testing addr-hal-0.1.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate addr-hal 0.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate addr-hal 0.1.1 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate addr-hal 0.1.1
[INFO] finished tweaking crates.io crate addr-hal 0.1.1
[INFO] tweaked toml for crates.io crate addr-hal 0.1.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1fb1801fb19456bf949a0044875864f9bed753ca2f2bd2c41252120d9c8acf46
[INFO] running `Command { std: "docker" "start" "-a" "1fb1801fb19456bf949a0044875864f9bed753ca2f2bd2c41252120d9c8acf46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1fb1801fb19456bf949a0044875864f9bed753ca2f2bd2c41252120d9c8acf46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fb1801fb19456bf949a0044875864f9bed753ca2f2bd2c41252120d9c8acf46", kill_on_drop: false }`
[INFO] [stdout] 1fb1801fb19456bf949a0044875864f9bed753ca2f2bd2c41252120d9c8acf46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 92ce63ff1eb37ea63f45de30b6c71923060a09fa6f8856bfe007187fe124e927
[INFO] running `Command { std: "docker" "start" "-a" "92ce63ff1eb37ea63f45de30b6c71923060a09fa6f8856bfe007187fe124e927", kill_on_drop: false }`
[INFO] [stderr]    Compiling addr-hal v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_fn)]
[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 `addr-hal`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "92ce63ff1eb37ea63f45de30b6c71923060a09fa6f8856bfe007187fe124e927", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92ce63ff1eb37ea63f45de30b6c71923060a09fa6f8856bfe007187fe124e927", kill_on_drop: false }`
[INFO] [stdout] 92ce63ff1eb37ea63f45de30b6c71923060a09fa6f8856bfe007187fe124e927