[INFO] fetching crate openat 0.1.19...
[INFO] checking openat-0.1.19 against beta for pr-78714
[INFO] extracting crate openat 0.1.19 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate openat 0.1.19 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate openat 0.1.19
[INFO] finished tweaking crates.io crate openat 0.1.19
[INFO] tweaked toml for crates.io crate openat 0.1.19 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate openat 0.1.19 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96079e4e77353bd35bafa88961b3c95d20b088cdfb8d2c765df59d5e09fb5bf0
[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" "96079e4e77353bd35bafa88961b3c95d20b088cdfb8d2c765df59d5e09fb5bf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96079e4e77353bd35bafa88961b3c95d20b088cdfb8d2c765df59d5e09fb5bf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96079e4e77353bd35bafa88961b3c95d20b088cdfb8d2c765df59d5e09fb5bf0", kill_on_drop: false }`
[INFO] [stdout] 96079e4e77353bd35bafa88961b3c95d20b088cdfb8d2c765df59d5e09fb5bf0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a1763af21bedb2105d9f185510d114d5557a19ec3e15c0e67f6f6e80abd0bd9
[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" "2a1763af21bedb2105d9f185510d114d5557a19ec3e15c0e67f6f6e80abd0bd9", kill_on_drop: false }`
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking openat v0.1.19 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/count_processes.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![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 `openat`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2a1763af21bedb2105d9f185510d114d5557a19ec3e15c0e67f6f6e80abd0bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a1763af21bedb2105d9f185510d114d5557a19ec3e15c0e67f6f6e80abd0bd9", kill_on_drop: false }`
[INFO] [stdout] 2a1763af21bedb2105d9f185510d114d5557a19ec3e15c0e67f6f6e80abd0bd9