[INFO] fetching crate roundrobin 0.1.1...
[INFO] checking roundrobin-0.1.1 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate roundrobin 0.1.1 into /workspace/builds/worker-83/source
[INFO] validating manifest of crates.io crate roundrobin 0.1.1 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-83/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c6dab693adf37ae0eeec92415d3d057c3ab18215b4f25f914a9dc7a9577fa3d
[INFO] running `Command { std: "docker" "start" "-a" "7c6dab693adf37ae0eeec92415d3d057c3ab18215b4f25f914a9dc7a9577fa3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c6dab693adf37ae0eeec92415d3d057c3ab18215b4f25f914a9dc7a9577fa3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c6dab693adf37ae0eeec92415d3d057c3ab18215b4f25f914a9dc7a9577fa3d", kill_on_drop: false }`
[INFO] [stdout] 7c6dab693adf37ae0eeec92415d3d057c3ab18215b4f25f914a9dc7a9577fa3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 705e8508c9a5703e47074bfe17c6949f4c6a5d18b11ad2b82dd1767cc2ce0d38
[INFO] running `Command { std: "docker" "start" "-a" "705e8508c9a5703e47074bfe17c6949f4c6a5d18b11ad2b82dd1767cc2ce0d38", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking cfg-if v0.1.10
[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: field is never read: `url`
[INFO] [stdout]  --> src/rr.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     url: String,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.10s
[INFO] running `Command { std: "docker" "inspect" "705e8508c9a5703e47074bfe17c6949f4c6a5d18b11ad2b82dd1767cc2ce0d38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "705e8508c9a5703e47074bfe17c6949f4c6a5d18b11ad2b82dd1767cc2ce0d38", kill_on_drop: false }`
[INFO] [stdout] 705e8508c9a5703e47074bfe17c6949f4c6a5d18b11ad2b82dd1767cc2ce0d38