[INFO] cloning repository https://github.com/r281GQ/bottles_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/r281GQ/bottles_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fr281GQ%2Fbottles_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fr281GQ%2Fbottles_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 35f9d5619678fd68f52e3dd29e0431b8ad1ff444
[INFO] checking r281GQ/bottles_rust against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fr281GQ%2Fbottles_rust" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/r281GQ/bottles_rust on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/r281GQ/bottles_rust
[INFO] finished tweaking git repo https://github.com/r281GQ/bottles_rust
[INFO] tweaked toml for git repo https://github.com/r281GQ/bottles_rust written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/r281GQ/bottles_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7cb6a191cebe87d0aedc2bc93f0aed653cc91e7e975c6e779be1c3143f9c539
[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" "a7cb6a191cebe87d0aedc2bc93f0aed653cc91e7e975c6e779be1c3143f9c539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7cb6a191cebe87d0aedc2bc93f0aed653cc91e7e975c6e779be1c3143f9c539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7cb6a191cebe87d0aedc2bc93f0aed653cc91e7e975c6e779be1c3143f9c539", kill_on_drop: false }`
[INFO] [stdout] a7cb6a191cebe87d0aedc2bc93f0aed653cc91e7e975c6e779be1c3143f9c539
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 570b790daf58c4d2713688305ba5a11972b120f11d4157401c289e9955328cc7
[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" "570b790daf58c4d2713688305ba5a11972b120f11d4157401c289e9955328cc7", kill_on_drop: false }`
[INFO] [stderr]     Checking bottles_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `create_verse`
[INFO] [stdout]  --> src/song.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn create_verse(from: i32) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_verses`
[INFO] [stdout]   --> src/song.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn create_verses(from: i32, to: i32) -> String {
[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 0.57s
[INFO] running `Command { std: "docker" "inspect" "570b790daf58c4d2713688305ba5a11972b120f11d4157401c289e9955328cc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "570b790daf58c4d2713688305ba5a11972b120f11d4157401c289e9955328cc7", kill_on_drop: false }`
[INFO] [stdout] 570b790daf58c4d2713688305ba5a11972b120f11d4157401c289e9955328cc7