[INFO] updating cached repository https://github.com/rfaulhaber/kolakoski-counter
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ff0ae4792a2a31bdf4be02e596c5bcd4f28e917c
[INFO] testing rfaulhaber/kolakoski-counter against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frfaulhaber%2Fkolakoski-counter" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rfaulhaber/kolakoski-counter on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-4/source/Cargo.toml
[INFO] crate git repo https://github.com/rfaulhaber/kolakoski-counter already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stdout] e5becdeabbfdc7339d2fe74d7d7c80bb2203b01f5907571e1df99e0e42f79e7a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "e5becdeabbfdc7339d2fe74d7d7c80bb2203b01f5907571e1df99e0e42f79e7a"`
[INFO] [stderr]    Compiling kol-counter v0.1.0 (/opt/rustwide/workdir)
[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: method is never used: `new`
[INFO] [stderr]  --> src/seq.rs:8:2
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new() -> KolSeq {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `first`
[INFO] [stderr]   --> src/seq.rs:28:2
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn first(&self) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `"docker" "inspect" "e5becdeabbfdc7339d2fe74d7d7c80bb2203b01f5907571e1df99e0e42f79e7a"`
[INFO] running `"docker" "rm" "-f" "e5becdeabbfdc7339d2fe74d7d7c80bb2203b01f5907571e1df99e0e42f79e7a"`
[INFO] [stdout] e5becdeabbfdc7339d2fe74d7d7c80bb2203b01f5907571e1df99e0e42f79e7a
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3eba5f19480418254a1abb25c80dd96c7da9b03a91b10ad1d0ad3c9e73e9fbe9
[INFO] running `"docker" "start" "-a" "3eba5f19480418254a1abb25c80dd96c7da9b03a91b10ad1d0ad3c9e73e9fbe9"`
[INFO] [stderr]    Compiling kol-counter v0.1.0 (/opt/rustwide/workdir)
[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: method is never used: `first`
[INFO] [stderr]   --> src/seq.rs:28:2
[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 1.17s
[INFO] running `"docker" "inspect" "3eba5f19480418254a1abb25c80dd96c7da9b03a91b10ad1d0ad3c9e73e9fbe9"`
[INFO] running `"docker" "rm" "-f" "3eba5f19480418254a1abb25c80dd96c7da9b03a91b10ad1d0ad3c9e73e9fbe9"`
[INFO] [stdout] 3eba5f19480418254a1abb25c80dd96c7da9b03a91b10ad1d0ad3c9e73e9fbe9
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ea780c97416415384d94a862f07ec0b078d191bc42cc8a5be8f79c530ae7a2c7
[INFO] running `"docker" "start" "-a" "ea780c97416415384d94a862f07ec0b078d191bc42cc8a5be8f79c530ae7a2c7"`
[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: method is never used: `first`
[INFO] [stderr]   --> src/seq.rs:28:2
[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 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/kol_counter-79be81c597eb9e22
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ea780c97416415384d94a862f07ec0b078d191bc42cc8a5be8f79c530ae7a2c7"`
[INFO] running `"docker" "rm" "-f" "ea780c97416415384d94a862f07ec0b078d191bc42cc8a5be8f79c530ae7a2c7"`
[INFO] [stdout] ea780c97416415384d94a862f07ec0b078d191bc42cc8a5be8f79c530ae7a2c7