[INFO] updating cached repository https://github.com/ekarbe/rust-algorithms
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] 28bc0fad5114c363e9c58487dc43f2fe14b3fe30
[INFO] testing ekarbe/rust-algorithms against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fekarbe%2Frust-algorithms" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ekarbe/rust-algorithms on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ekarbe/rust-algorithms
[INFO] finished tweaking git repo https://github.com/ekarbe/rust-algorithms
[INFO] tweaked toml for git repo https://github.com/ekarbe/rust-algorithms written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/ekarbe/rust-algorithms already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /big/crater/work/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] a900f638560ee460503a7138461d558bece76592b66b30a5f380f2e775112fa9
[INFO] running `"docker" "start" "-a" "a900f638560ee460503a7138461d558bece76592b66b30a5f380f2e775112fa9"`
[INFO] [stderr]    Compiling rust-algorithms v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `sort`
[INFO] [stderr]  --> src/bubble_sort.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn sort(arr: &mut [i32]) -> &mut [i32] {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sort`
[INFO] [stderr]  --> src/cocktail_shaker_sort.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn sort(arr: &mut [i32]) -> &mut [i32] {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sort`
[INFO] [stderr]  --> src/insertion_sort.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn sort(arr: &mut [i32]) -> &mut [i32] {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `index_of`
[INFO] [stderr]  --> src/linear_search.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn index_of(arr: &[i32], tar: i32) -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `max`
[INFO] [stderr]  --> src/selection_search.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn max(arr: &[i32]) -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `min`
[INFO] [stderr]   --> src/selection_search.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn min(arr: &[i32]) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `"docker" "inspect" "a900f638560ee460503a7138461d558bece76592b66b30a5f380f2e775112fa9"`
[INFO] running `"docker" "rm" "-f" "a900f638560ee460503a7138461d558bece76592b66b30a5f380f2e775112fa9"`
[INFO] [stdout] a900f638560ee460503a7138461d558bece76592b66b30a5f380f2e775112fa9
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 599fa2a60136ebfe46e18cd58dc7eacc8eb720a8d4d6ed001079da1ef665e126
[INFO] running `"docker" "start" "-a" "599fa2a60136ebfe46e18cd58dc7eacc8eb720a8d4d6ed001079da1ef665e126"`
[INFO] [stderr]    Compiling rust-algorithms v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `"docker" "inspect" "599fa2a60136ebfe46e18cd58dc7eacc8eb720a8d4d6ed001079da1ef665e126"`
[INFO] running `"docker" "rm" "-f" "599fa2a60136ebfe46e18cd58dc7eacc8eb720a8d4d6ed001079da1ef665e126"`
[INFO] [stdout] 599fa2a60136ebfe46e18cd58dc7eacc8eb720a8d4d6ed001079da1ef665e126
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 9baaefe8c01e6f1b4c72f0b9d5bec95bbdd4e91a81c0b4f2ca62bbbac63a987d
[INFO] running `"docker" "start" "-a" "9baaefe8c01e6f1b4c72f0b9d5bec95bbdd4e91a81c0b4f2ca62bbbac63a987d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_algorithms-9e4bfc7b871b87ea
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test bubble_sort::average ... ok
[INFO] [stdout] test cocktail_shaker_sort::average ... ok
[INFO] [stdout] test bubble_sort::best ... ok
[INFO] [stdout] test bubble_sort::worst ... ok
[INFO] [stdout] test cocktail_shaker_sort::best ... ok
[INFO] [stdout] test insertion_sort::worst ... ok
[INFO] [stdout] test linear_search::best ... ok
[INFO] [stdout] test cocktail_shaker_sort::worst ... ok
[INFO] [stdout] test insertion_sort::best ... ok
[INFO] [stdout] test linear_search::in_array ... ok
[INFO] [stdout] test linear_search::not_in_array ... ok
[INFO] [stdout] test insertion_sort::average ... ok
[INFO] [stdout] test linear_search::worst ... ok
[INFO] [stdout] test selection_search::best ... ok
[INFO] [stdout] test selection_search::worst ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "9baaefe8c01e6f1b4c72f0b9d5bec95bbdd4e91a81c0b4f2ca62bbbac63a987d"`
[INFO] running `"docker" "rm" "-f" "9baaefe8c01e6f1b4c72f0b9d5bec95bbdd4e91a81c0b4f2ca62bbbac63a987d"`
[INFO] [stdout] 9baaefe8c01e6f1b4c72f0b9d5bec95bbdd4e91a81c0b4f2ca62bbbac63a987d