[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 master#936f2600b6c903b04387f74ed5cbce88bb06d243 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-87/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-87/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alvarlagerlof/lab-rust-fizzbuzz on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-87/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 859549022c108e862d8dba1ba3be29b117fde9ef0aecc01a42e239e71715f883
[INFO] running `Command { std: "docker" "start" "-a" "859549022c108e862d8dba1ba3be29b117fde9ef0aecc01a42e239e71715f883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "859549022c108e862d8dba1ba3be29b117fde9ef0aecc01a42e239e71715f883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "859549022c108e862d8dba1ba3be29b117fde9ef0aecc01a42e239e71715f883", kill_on_drop: false }`
[INFO] [stdout] 859549022c108e862d8dba1ba3be29b117fde9ef0aecc01a42e239e71715f883
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c2d8837d17e90599dd4d88a5b4f5466b02ffd7de68b7470048ba65741f43281
[INFO] running `Command { std: "docker" "start" "-a" "1c2d8837d17e90599dd4d88a5b4f5466b02ffd7de68b7470048ba65741f43281", 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 0.51s
[INFO] running `Command { std: "docker" "inspect" "1c2d8837d17e90599dd4d88a5b4f5466b02ffd7de68b7470048ba65741f43281", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c2d8837d17e90599dd4d88a5b4f5466b02ffd7de68b7470048ba65741f43281", kill_on_drop: false }`
[INFO] [stdout] 1c2d8837d17e90599dd4d88a5b4f5466b02ffd7de68b7470048ba65741f43281