[INFO] cloning repository https://github.com/Spaceecs/PRR_9
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Spaceecs/PRR_9" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpaceecs%2FPRR_9", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpaceecs%2FPRR_9'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 168c63d70d7802a68229efa4497428d23ddbfaca
[INFO] checking Spaceecs/PRR_9 against try#d8a5ee01b913730aca7ab44c72c8f2722c0533ff for pr-139022
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpaceecs%2FPRR_9" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Spaceecs/PRR_9 on toolchain d8a5ee01b913730aca7ab44c72c8f2722c0533ff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Spaceecs/PRR_9
[INFO] finished tweaking git repo https://github.com/Spaceecs/PRR_9
[INFO] tweaked toml for git repo https://github.com/Spaceecs/PRR_9 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Spaceecs/PRR_9 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" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b65f9b928d41c88c27c75cbf828cbb3c6d4a34fbc789f4b1fe83679797b075a
[INFO] running `Command { std: "docker" "start" "-a" "8b65f9b928d41c88c27c75cbf828cbb3c6d4a34fbc789f4b1fe83679797b075a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b65f9b928d41c88c27c75cbf828cbb3c6d4a34fbc789f4b1fe83679797b075a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b65f9b928d41c88c27c75cbf828cbb3c6d4a34fbc789f4b1fe83679797b075a", kill_on_drop: false }`
[INFO] [stdout] 8b65f9b928d41c88c27c75cbf828cbb3c6d4a34fbc789f4b1fe83679797b075a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20bde7fe6ade78139ec90666c57c280b3c4cd62a7e9d6fe836db38455c5d4167
[INFO] running `Command { std: "docker" "start" "-a" "20bde7fe6ade78139ec90666c57c280b3c4cd62a7e9d6fe836db38455c5d4167", kill_on_drop: false }`
[INFO] [stderr]     Checking ppr_9 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `is_prime` is never used
[INFO] [stdout]  --> src/ppr_9.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn is_prime(n: &u32) -> bool {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected`
[INFO] [stdout]   --> src/ppr_9.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |     for (n, expected) in test_data.iter() {
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "20bde7fe6ade78139ec90666c57c280b3c4cd62a7e9d6fe836db38455c5d4167", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20bde7fe6ade78139ec90666c57c280b3c4cd62a7e9d6fe836db38455c5d4167", kill_on_drop: false }`
[INFO] [stdout] 20bde7fe6ade78139ec90666c57c280b3c4cd62a7e9d6fe836db38455c5d4167