[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 master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frfaulhaber%2Fkolakoski-counter" "/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/rfaulhaber/kolakoski-counter on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", 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-7/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" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 770b3cc466dca0affd92015fb4ec1cae90b6fc774c75063924c519ba226d7480
[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" "770b3cc466dca0affd92015fb4ec1cae90b6fc774c75063924c519ba226d7480", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "770b3cc466dca0affd92015fb4ec1cae90b6fc774c75063924c519ba226d7480", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "770b3cc466dca0affd92015fb4ec1cae90b6fc774c75063924c519ba226d7480", kill_on_drop: false }`
[INFO] [stdout] 770b3cc466dca0affd92015fb4ec1cae90b6fc774c75063924c519ba226d7480
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd05e3158c70627053d0ebdc95a4f46ae87a783015b6bf38a0513df351c5dea8
[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" "fd05e3158c70627053d0ebdc95a4f46ae87a783015b6bf38a0513df351c5dea8", kill_on_drop: false }`
[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 0.65s
[INFO] running `Command { std: "docker" "inspect" "fd05e3158c70627053d0ebdc95a4f46ae87a783015b6bf38a0513df351c5dea8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd05e3158c70627053d0ebdc95a4f46ae87a783015b6bf38a0513df351c5dea8", kill_on_drop: false }`
[INFO] [stdout] fd05e3158c70627053d0ebdc95a4f46ae87a783015b6bf38a0513df351c5dea8
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 782c84fe8f8bca8395c03f140b2569ce2f2ae67d30af12178d9305d1d16655f1
[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" "782c84fe8f8bca8395c03f140b2569ce2f2ae67d30af12178d9305d1d16655f1", kill_on_drop: false }`
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "782c84fe8f8bca8395c03f140b2569ce2f2ae67d30af12178d9305d1d16655f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "782c84fe8f8bca8395c03f140b2569ce2f2ae67d30af12178d9305d1d16655f1", kill_on_drop: false }`
[INFO] [stdout] 782c84fe8f8bca8395c03f140b2569ce2f2ae67d30af12178d9305d1d16655f1
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 615f93150b0363570c114715935b83ce69fb39291ec9f5ff282f854abb5cf882
[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" "615f93150b0363570c114715935b83ce69fb39291ec9f5ff282f854abb5cf882", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: field is never read: `prev_run`
[INFO] [stdout] running 1 test
[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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/kol_counter-643a8337e3bb7ae9
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "615f93150b0363570c114715935b83ce69fb39291ec9f5ff282f854abb5cf882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "615f93150b0363570c114715935b83ce69fb39291ec9f5ff282f854abb5cf882", kill_on_drop: false }`
[INFO] [stdout] 615f93150b0363570c114715935b83ce69fb39291ec9f5ff282f854abb5cf882