[INFO] cloning repository https://github.com/fishsalter/bubble-sort-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fishsalter/bubble-sort-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffishsalter%2Fbubble-sort-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffishsalter%2Fbubble-sort-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ead55168088ea512f41e1a25f15ea29e3bb4d2f7
[INFO] checking fishsalter/bubble-sort-in-rust against master#9bfa31f632912180dc742809bcc51a97f2d7079d for pr-140151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffishsalter%2Fbubble-sort-in-rust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fishsalter/bubble-sort-in-rust on toolchain 9bfa31f632912180dc742809bcc51a97f2d7079d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9bfa31f632912180dc742809bcc51a97f2d7079d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fishsalter/bubble-sort-in-rust
[INFO] finished tweaking git repo https://github.com/fishsalter/bubble-sort-in-rust
[INFO] tweaked toml for git repo https://github.com/fishsalter/bubble-sort-in-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/fishsalter/bubble-sort-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9bfa31f632912180dc742809bcc51a97f2d7079d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+9bfa31f632912180dc742809bcc51a97f2d7079d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac1afc7c57f606ee4f8466279d3ac56823690fc3a2df5fd9d2c19581855072af
[INFO] running `Command { std: "docker" "start" "-a" "ac1afc7c57f606ee4f8466279d3ac56823690fc3a2df5fd9d2c19581855072af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac1afc7c57f606ee4f8466279d3ac56823690fc3a2df5fd9d2c19581855072af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac1afc7c57f606ee4f8466279d3ac56823690fc3a2df5fd9d2c19581855072af", kill_on_drop: false }`
[INFO] [stdout] ac1afc7c57f606ee4f8466279d3ac56823690fc3a2df5fd9d2c19581855072af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+9bfa31f632912180dc742809bcc51a97f2d7079d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 344aad58448e54d5635de50a2f44f7b45e67df33b8337f182a0d1b4fb0e553c1
[INFO] running `Command { std: "docker" "start" "-a" "344aad58448e54d5635de50a2f44f7b45e67df33b8337f182a0d1b4fb0e553c1", kill_on_drop: false }`
[INFO] [stderr]     Checking bubble-sort-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `LightTime` is never used
[INFO] [stdout]  --> src/c4/traffic_light.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait LightTime {
[INFO] [stdout]   |       ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TrafficLight` is never used
[INFO] [stdout]  --> src/c4/traffic_light.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum TrafficLight {
[INFO] [stdout]   |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_u32` is never used
[INFO] [stdout]  --> src/c4/sum_u32.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn sum_u32(xx: &[u32]) -> Option<u32> {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Area` is never used
[INFO] [stdout]  --> src/c4/area.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | trait Area {
[INFO] [stdout]   |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]  --> src/c4/area.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Circle {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Triangle` is never constructed
[INFO] [stdout]   --> src/c4/area.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Triangle {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Square` is never constructed
[INFO] [stdout]   --> src/c4/area.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Square {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_area` is never used
[INFO] [stdout]   --> src/c4/area.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn print_area<T: Area>(a: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "344aad58448e54d5635de50a2f44f7b45e67df33b8337f182a0d1b4fb0e553c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "344aad58448e54d5635de50a2f44f7b45e67df33b8337f182a0d1b4fb0e553c1", kill_on_drop: false }`
[INFO] [stdout] 344aad58448e54d5635de50a2f44f7b45e67df33b8337f182a0d1b4fb0e553c1