[INFO] cloning repository https://github.com/rfaulhaber/kolakoski-counter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rfaulhaber/kolakoski-counter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frfaulhaber%2Fkolakoski-counter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frfaulhaber%2Fkolakoski-counter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ff0ae4792a2a31bdf4be02e596c5bcd4f28e917c
[INFO] testing rfaulhaber/kolakoski-counter against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frfaulhaber%2Fkolakoski-counter" "/workspace/builds/worker-81/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-81/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rfaulhaber/kolakoski-counter on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rfaulhaber/kolakoski-counter
[INFO] finished tweaking git repo https://github.com/rfaulhaber/kolakoski-counter
[INFO] tweaked toml for git repo https://github.com/rfaulhaber/kolakoski-counter written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] crate git repo https://github.com/rfaulhaber/kolakoski-counter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4847e0571d64e55b0aabede20a4e0478fe0af980b556616c39e1f43d7c7dd375
[INFO] running `Command { std: "docker" "start" "-a" "4847e0571d64e55b0aabede20a4e0478fe0af980b556616c39e1f43d7c7dd375", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4847e0571d64e55b0aabede20a4e0478fe0af980b556616c39e1f43d7c7dd375", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4847e0571d64e55b0aabede20a4e0478fe0af980b556616c39e1f43d7c7dd375", kill_on_drop: false }`
[INFO] [stdout] 4847e0571d64e55b0aabede20a4e0478fe0af980b556616c39e1f43d7c7dd375
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8db274f0f487a977ac35d2254400dab0821b102098507d33d63d8e9a15101fee
[INFO] running `Command { std: "docker" "start" "-a" "8db274f0f487a977ac35d2254400dab0821b102098507d33d63d8e9a15101fee", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling kol-counter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `prev_run`
[INFO] [stdout]  --> src/seq.rs:2:2
[INFO] [stdout]   |
[INFO] [stdout] 2 |     prev_run: Run,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/seq.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn new() -> KolSeq {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `first`
[INFO] [stdout]   --> src/seq.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn first(&self) -> u8 {
[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 9.50s
[INFO] running `Command { std: "docker" "inspect" "8db274f0f487a977ac35d2254400dab0821b102098507d33d63d8e9a15101fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8db274f0f487a977ac35d2254400dab0821b102098507d33d63d8e9a15101fee", kill_on_drop: false }`
[INFO] [stdout] 8db274f0f487a977ac35d2254400dab0821b102098507d33d63d8e9a15101fee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5cb81dbc1bfcc5f5fc597503b37bdd3ae9b64ca30a064724a6b7c08535c76568
[INFO] running `Command { std: "docker" "start" "-a" "5cb81dbc1bfcc5f5fc597503b37bdd3ae9b64ca30a064724a6b7c08535c76568", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling kol-counter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `prev_run`
[INFO] [stdout]  --> src/seq.rs:2:2
[INFO] [stdout]   |
[INFO] [stdout] 2 |     prev_run: Run,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `first`
[INFO] [stdout]   --> src/seq.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn first(&self) -> u8 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 16.09s
[INFO] running `Command { std: "docker" "inspect" "5cb81dbc1bfcc5f5fc597503b37bdd3ae9b64ca30a064724a6b7c08535c76568", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cb81dbc1bfcc5f5fc597503b37bdd3ae9b64ca30a064724a6b7c08535c76568", kill_on_drop: false }`
[INFO] [stdout] 5cb81dbc1bfcc5f5fc597503b37bdd3ae9b64ca30a064724a6b7c08535c76568
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dfcd02ad046b2d8770057508b674d99c8ab886184f77b44e47bd014cdcd4736f
[INFO] running `Command { std: "docker" "start" "-a" "dfcd02ad046b2d8770057508b674d99c8ab886184f77b44e47bd014cdcd4736f", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `prev_run`
[INFO] [stderr]  --> src/seq.rs:2:2
[INFO] [stderr]   |
[INFO] [stderr] 2 |     prev_run: Run,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `first`
[INFO] [stderr]   --> src/seq.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn first(&self) -> u8 {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `kol-counter` (bin "kol-counter" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/kol_counter-a564513d01cc15b5)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test seq::tests::kol_seq_generates_n_steps ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dfcd02ad046b2d8770057508b674d99c8ab886184f77b44e47bd014cdcd4736f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfcd02ad046b2d8770057508b674d99c8ab886184f77b44e47bd014cdcd4736f", kill_on_drop: false }`
[INFO] [stdout] dfcd02ad046b2d8770057508b674d99c8ab886184f77b44e47bd014cdcd4736f