[INFO] fetching crate roundrobin 0.1.1...
[INFO] checking roundrobin-0.1.1 against beta for pr-78714
[INFO] extracting crate roundrobin 0.1.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate roundrobin 0.1.1 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 roundrobin 0.1.1
[INFO] finished tweaking crates.io crate roundrobin 0.1.1
[INFO] tweaked toml for crates.io crate roundrobin 0.1.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate roundrobin 0.1.1 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-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 91434b0c030a90eb1b12935ddbe3570d68e60394ae49e3febc626c9a18869b81
[INFO] running `Command { std: "docker" "start" "-a" "91434b0c030a90eb1b12935ddbe3570d68e60394ae49e3febc626c9a18869b81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91434b0c030a90eb1b12935ddbe3570d68e60394ae49e3febc626c9a18869b81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91434b0c030a90eb1b12935ddbe3570d68e60394ae49e3febc626c9a18869b81", kill_on_drop: false }`
[INFO] [stdout] 91434b0c030a90eb1b12935ddbe3570d68e60394ae49e3febc626c9a18869b81
[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" "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] 2613285a49d6beb41a51a1d8ad8bcf077bcca8772a4b6c54704becacceafcf63
[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" "2613285a49d6beb41a51a1d8ad8bcf077bcca8772a4b6c54704becacceafcf63", kill_on_drop: false }`
[INFO] [stderr]     Checking roundrobin v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `RoundRobinBalancer`, `Server`
[INFO] [stdout]   --> src/rr.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 46 |     use super::{RoundRobinBalancer, Server};
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/wrr.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "2613285a49d6beb41a51a1d8ad8bcf077bcca8772a4b6c54704becacceafcf63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2613285a49d6beb41a51a1d8ad8bcf077bcca8772a4b6c54704becacceafcf63", kill_on_drop: false }`
[INFO] [stdout] 2613285a49d6beb41a51a1d8ad8bcf077bcca8772a4b6c54704becacceafcf63