[INFO] cloning repository https://github.com/bryanlyp/rust_rubiks_cube
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bryanlyp/rust_rubiks_cube" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbryanlyp%2Frust_rubiks_cube", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbryanlyp%2Frust_rubiks_cube'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de3eacb46e1418c360dc18e55f27f26efd4b54a8
[INFO] checking bryanlyp/rust_rubiks_cube against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbryanlyp%2Frust_rubiks_cube" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bryanlyp/rust_rubiks_cube on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bryanlyp/rust_rubiks_cube
[INFO] finished tweaking git repo https://github.com/bryanlyp/rust_rubiks_cube
[INFO] tweaked toml for git repo https://github.com/bryanlyp/rust_rubiks_cube written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/bryanlyp/rust_rubiks_cube already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7addd42c4753d1fa663f1e181cc29ac934381e6b7d30698a57d8302244904c2c
[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" "7addd42c4753d1fa663f1e181cc29ac934381e6b7d30698a57d8302244904c2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7addd42c4753d1fa663f1e181cc29ac934381e6b7d30698a57d8302244904c2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7addd42c4753d1fa663f1e181cc29ac934381e6b7d30698a57d8302244904c2c", kill_on_drop: false }`
[INFO] [stdout] 7addd42c4753d1fa663f1e181cc29ac934381e6b7d30698a57d8302244904c2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f721d308f11e8622ed7ef03e072802fd58b0a06dcd3f8110829e4c66698a767e
[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" "f721d308f11e8622ed7ef03e072802fd58b0a06dcd3f8110829e4c66698a767e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking rubiks_cube v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `moves`
[INFO] [stdout]    --> src/rubiks_cube.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 |     moves: Vec<u8>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `moves`
[INFO] [stdout]    --> src/rubiks_cube.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 |     moves: Vec<u8>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.62s
[INFO] running `Command { std: "docker" "inspect" "f721d308f11e8622ed7ef03e072802fd58b0a06dcd3f8110829e4c66698a767e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f721d308f11e8622ed7ef03e072802fd58b0a06dcd3f8110829e4c66698a767e", kill_on_drop: false }`
[INFO] [stdout] f721d308f11e8622ed7ef03e072802fd58b0a06dcd3f8110829e4c66698a767e