[INFO] updating cached repository jmcomets/stream-search
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jmcomets/stream-search
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jmcomets/stream-search" "work/ex/beta-1.38-1/sources/1.37.0/gh/jmcomets/stream-search"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jmcomets/stream-search'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jmcomets/stream-search" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jmcomets/stream-search"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jmcomets/stream-search'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0e2bd340c1cb0214e1a40661203bb80077009dc8
[INFO] sha for GitHub repo jmcomets/stream-search: 0e2bd340c1cb0214e1a40661203bb80077009dc8
[INFO] validating manifest of jmcomets/stream-search 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 jmcomets/stream-search 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 jmcomets/stream-search
[INFO] finished frobbing jmcomets/stream-search
[INFO] frobbed toml for jmcomets/stream-search written to work/ex/beta-1.38-1/sources/1.37.0/gh/jmcomets/stream-search/Cargo.toml
[INFO] started frobbing jmcomets/stream-search
[INFO] finished frobbing jmcomets/stream-search
[INFO] frobbed toml for jmcomets/stream-search written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jmcomets/stream-search/Cargo.toml
[INFO] crate jmcomets/stream-search 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing jmcomets/stream-search 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jmcomets/stream-search:/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] b6ee954c1fcb11990aedf9fd7c7108ab65cf7d099a9bc677b183fdce64dbec72
[INFO] running `"docker" "start" "-a" "b6ee954c1fcb11990aedf9fd7c7108ab65cf7d099a9bc677b183fdce64dbec72"`
[INFO] [stderr]    Compiling stream-search v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `sum_adjacent_differences`
[INFO] [stderr]   --> src/main.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | / fn sum_adjacent_differences<'a, It>(iter: It) -> usize
[INFO] [stderr] 23 | |     where It: Iterator<Item=&'a usize> + Clone
[INFO] [stderr] 24 | | {
[INFO] [stderr] 25 | |     let cloned_iter = iter.clone();
[INFO] [stderr] ...  |
[INFO] [stderr] 28 | |         .sum()
[INFO] [stderr] 29 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "b6ee954c1fcb11990aedf9fd7c7108ab65cf7d099a9bc677b183fdce64dbec72"`
[INFO] running `"docker" "rm" "-f" "b6ee954c1fcb11990aedf9fd7c7108ab65cf7d099a9bc677b183fdce64dbec72"`
[INFO] [stdout] b6ee954c1fcb11990aedf9fd7c7108ab65cf7d099a9bc677b183fdce64dbec72
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jmcomets/stream-search:/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] e90e008ba93b2a3993ba56df19b73de18b9908bb593a4f5994b6ccb7c98ae1d1
[INFO] running `"docker" "start" "-a" "e90e008ba93b2a3993ba56df19b73de18b9908bb593a4f5994b6ccb7c98ae1d1"`
[INFO] [stderr]    Compiling stream-search v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `sum_adjacent_differences`
[INFO] [stderr]   --> src/main.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | / fn sum_adjacent_differences<'a, It>(iter: It) -> usize
[INFO] [stderr] 23 | |     where It: Iterator<Item=&'a usize> + Clone
[INFO] [stderr] 24 | | {
[INFO] [stderr] 25 | |     let cloned_iter = iter.clone();
[INFO] [stderr] ...  |
[INFO] [stderr] 28 | |         .sum()
[INFO] [stderr] 29 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "e90e008ba93b2a3993ba56df19b73de18b9908bb593a4f5994b6ccb7c98ae1d1"`
[INFO] running `"docker" "rm" "-f" "e90e008ba93b2a3993ba56df19b73de18b9908bb593a4f5994b6ccb7c98ae1d1"`
[INFO] [stdout] e90e008ba93b2a3993ba56df19b73de18b9908bb593a4f5994b6ccb7c98ae1d1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jmcomets/stream-search:/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] 96602e52d731bba8b18bc1e557a5a0415f809e17be6150fd0a3c9a2f77eeb4b7
[INFO] running `"docker" "start" "-a" "96602e52d731bba8b18bc1e557a5a0415f809e17be6150fd0a3c9a2f77eeb4b7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/stream_search-fde5fffdf9f885c4
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "96602e52d731bba8b18bc1e557a5a0415f809e17be6150fd0a3c9a2f77eeb4b7"`
[INFO] running `"docker" "rm" "-f" "96602e52d731bba8b18bc1e557a5a0415f809e17be6150fd0a3c9a2f77eeb4b7"`
[INFO] [stdout] 96602e52d731bba8b18bc1e557a5a0415f809e17be6150fd0a3c9a2f77eeb4b7