[INFO] cloning repository https://github.com/alvarlagerlof/lab-rust-fizzbuzz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alvarlagerlof/lab-rust-fizzbuzz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falvarlagerlof%2Flab-rust-fizzbuzz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falvarlagerlof%2Flab-rust-fizzbuzz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 290010a2172f5f1c85652dac0ef2158bc4e705c0
[INFO] checking alvarlagerlof/lab-rust-fizzbuzz against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falvarlagerlof%2Flab-rust-fizzbuzz" "/workspace/builds/worker-105/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-105/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alvarlagerlof/lab-rust-fizzbuzz 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 git repo https://github.com/alvarlagerlof/lab-rust-fizzbuzz
[INFO] finished tweaking git repo https://github.com/alvarlagerlof/lab-rust-fizzbuzz
[INFO] tweaked toml for git repo https://github.com/alvarlagerlof/lab-rust-fizzbuzz written to /workspace/builds/worker-105/source/Cargo.toml
[INFO] crate git repo https://github.com/alvarlagerlof/lab-rust-fizzbuzz 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-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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] c6657fca3a51a7910ebbd783c9aa6009e39db76fe0ae4c181e58001395269d1f
[INFO] running `Command { std: "docker" "start" "-a" "c6657fca3a51a7910ebbd783c9aa6009e39db76fe0ae4c181e58001395269d1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6657fca3a51a7910ebbd783c9aa6009e39db76fe0ae4c181e58001395269d1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6657fca3a51a7910ebbd783c9aa6009e39db76fe0ae4c181e58001395269d1f", kill_on_drop: false }`
[INFO] [stdout] c6657fca3a51a7910ebbd783c9aa6009e39db76fe0ae4c181e58001395269d1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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] 023781587fa8455ddb0f1896a58762be9962308cbc066786d6bd214aee94796e
[INFO] running `Command { std: "docker" "start" "-a" "023781587fa8455ddb0f1896a58762be9962308cbc066786d6bd214aee94796e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking lab-rust-fizzbuzz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Num`
[INFO] [stdout]  --> src/fizzbuzz.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Num(i32),
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `String`
[INFO] [stdout]  --> src/fizzbuzz.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     String(String)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fizzbuzz`
[INFO] [stdout]  --> src/fizzbuzz.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fizzbuzz(number: i32) -> NumOrString {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.01s
[INFO] running `Command { std: "docker" "inspect" "023781587fa8455ddb0f1896a58762be9962308cbc066786d6bd214aee94796e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "023781587fa8455ddb0f1896a58762be9962308cbc066786d6bd214aee94796e", kill_on_drop: false }`
[INFO] [stdout] 023781587fa8455ddb0f1896a58762be9962308cbc066786d6bd214aee94796e