[INFO] updating cached repository rfaulhaber/kolakoski-counter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rfaulhaber/kolakoski-counter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rfaulhaber/kolakoski-counter" "work/ex/beta-1.38-1/sources/1.37.0/gh/rfaulhaber/kolakoski-counter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/rfaulhaber/kolakoski-counter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rfaulhaber/kolakoski-counter" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rfaulhaber/kolakoski-counter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rfaulhaber/kolakoski-counter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ff0ae4792a2a31bdf4be02e596c5bcd4f28e917c
[INFO] sha for GitHub repo rfaulhaber/kolakoski-counter: ff0ae4792a2a31bdf4be02e596c5bcd4f28e917c
[INFO] validating manifest of rfaulhaber/kolakoski-counter on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rfaulhaber/kolakoski-counter on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rfaulhaber/kolakoski-counter
[INFO] finished frobbing rfaulhaber/kolakoski-counter
[INFO] frobbed toml for rfaulhaber/kolakoski-counter written to work/ex/beta-1.38-1/sources/1.37.0/gh/rfaulhaber/kolakoski-counter/Cargo.toml
[INFO] started frobbing rfaulhaber/kolakoski-counter
[INFO] finished frobbing rfaulhaber/kolakoski-counter
[INFO] frobbed toml for rfaulhaber/kolakoski-counter written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rfaulhaber/kolakoski-counter/Cargo.toml
[INFO] crate rfaulhaber/kolakoski-counter already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing rfaulhaber/kolakoski-counter against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/rfaulhaber/kolakoski-counter:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 2bd49198435acb502ecf3ea1a1353daccdbb52e7bb72a00c5500b4ba04706ea5
[INFO] running `"docker" "start" "-a" "2bd49198435acb502ecf3ea1a1353daccdbb52e7bb72a00c5500b4ba04706ea5"`
[INFO] [stderr]    Compiling kol-counter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `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]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `"docker" "inspect" "2bd49198435acb502ecf3ea1a1353daccdbb52e7bb72a00c5500b4ba04706ea5"`
[INFO] running `"docker" "rm" "-f" "2bd49198435acb502ecf3ea1a1353daccdbb52e7bb72a00c5500b4ba04706ea5"`
[INFO] [stdout] 2bd49198435acb502ecf3ea1a1353daccdbb52e7bb72a00c5500b4ba04706ea5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/rfaulhaber/kolakoski-counter:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] fb83a80e2845728b3daa306e3387f363eff3d0df9887d84970c0dfd28aa8ce78
[INFO] running `"docker" "start" "-a" "fb83a80e2845728b3daa306e3387f363eff3d0df9887d84970c0dfd28aa8ce78"`
[INFO] [stderr]    Compiling kol-counter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `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]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `"docker" "inspect" "fb83a80e2845728b3daa306e3387f363eff3d0df9887d84970c0dfd28aa8ce78"`
[INFO] running `"docker" "rm" "-f" "fb83a80e2845728b3daa306e3387f363eff3d0df9887d84970c0dfd28aa8ce78"`
[INFO] [stdout] fb83a80e2845728b3daa306e3387f363eff3d0df9887d84970c0dfd28aa8ce78
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/rfaulhaber/kolakoski-counter:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 917001478e9da6ab4891a6860665dc84b316c3a1d4ed07f10eabf1ae2c60127c
[INFO] running `"docker" "start" "-a" "917001478e9da6ab4891a6860665dc84b316c3a1d4ed07f10eabf1ae2c60127c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/kol_counter-449b0618c1acda31
[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" "917001478e9da6ab4891a6860665dc84b316c3a1d4ed07f10eabf1ae2c60127c"`
[INFO] running `"docker" "rm" "-f" "917001478e9da6ab4891a6860665dc84b316c3a1d4ed07f10eabf1ae2c60127c"`
[INFO] [stdout] 917001478e9da6ab4891a6860665dc84b316c3a1d4ed07f10eabf1ae2c60127c