[INFO] updating cached repository ekarbe/rust-algorithms
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ekarbe/rust-algorithms
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ekarbe/rust-algorithms" "work/ex/beta-1.37-6/sources/1.36.0/gh/ekarbe/rust-algorithms"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/ekarbe/rust-algorithms'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ekarbe/rust-algorithms" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ekarbe/rust-algorithms"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ekarbe/rust-algorithms'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 28bc0fad5114c363e9c58487dc43f2fe14b3fe30
[INFO] sha for GitHub repo ekarbe/rust-algorithms: 28bc0fad5114c363e9c58487dc43f2fe14b3fe30
[INFO] validating manifest of ekarbe/rust-algorithms on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ekarbe/rust-algorithms on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ekarbe/rust-algorithms
[INFO] finished frobbing ekarbe/rust-algorithms
[INFO] frobbed toml for ekarbe/rust-algorithms written to work/ex/beta-1.37-6/sources/1.36.0/gh/ekarbe/rust-algorithms/Cargo.toml
[INFO] started frobbing ekarbe/rust-algorithms
[INFO] finished frobbing ekarbe/rust-algorithms
[INFO] frobbed toml for ekarbe/rust-algorithms written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ekarbe/rust-algorithms/Cargo.toml
[INFO] crate ekarbe/rust-algorithms already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ekarbe/rust-algorithms/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ekarbe/rust-algorithms against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ekarbe/rust-algorithms:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 95f40095f3b0c2f51b29f28ad6fdff0af39b280708ee5f169c418e2c081ff464
[INFO] running `"docker" "start" "-a" "95f40095f3b0c2f51b29f28ad6fdff0af39b280708ee5f169c418e2c081ff464"`
[INFO] [stderr]    Compiling rust-algorithms v0.0.1 (/opt/crater/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 0.70s
[INFO] running `"docker" "inspect" "95f40095f3b0c2f51b29f28ad6fdff0af39b280708ee5f169c418e2c081ff464"`
[INFO] running `"docker" "rm" "-f" "95f40095f3b0c2f51b29f28ad6fdff0af39b280708ee5f169c418e2c081ff464"`
[INFO] [stdout] 95f40095f3b0c2f51b29f28ad6fdff0af39b280708ee5f169c418e2c081ff464
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ekarbe/rust-algorithms:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8da7a3b17a4b1dca966cb569a7bb462b25e6e5589600a4a4ce3d6bec2a1df712
[INFO] running `"docker" "start" "-a" "8da7a3b17a4b1dca966cb569a7bb462b25e6e5589600a4a4ce3d6bec2a1df712"`
[INFO] [stderr]    Compiling rust-algorithms v0.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `"docker" "inspect" "8da7a3b17a4b1dca966cb569a7bb462b25e6e5589600a4a4ce3d6bec2a1df712"`
[INFO] running `"docker" "rm" "-f" "8da7a3b17a4b1dca966cb569a7bb462b25e6e5589600a4a4ce3d6bec2a1df712"`
[INFO] [stdout] 8da7a3b17a4b1dca966cb569a7bb462b25e6e5589600a4a4ce3d6bec2a1df712
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ekarbe/rust-algorithms:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 06fa1f46bc81ef88fa8c2e16bdf6d416fe0978bfacc88ce5a0cf5ce32e6007a5
[INFO] running `"docker" "start" "-a" "06fa1f46bc81ef88fa8c2e16bdf6d416fe0978bfacc88ce5a0cf5ce32e6007a5"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_algorithms-c49daaeab72ea51c
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test bubble_sort::best ... ok
[INFO] [stdout] test bubble_sort::worst ... ok
[INFO] [stdout] test bubble_sort::average ... ok
[INFO] [stdout] test cocktail_shaker_sort::average ... ok
[INFO] [stdout] test insertion_sort::average ... ok
[INFO] [stdout] test cocktail_shaker_sort::best ... ok
[INFO] [stdout] test insertion_sort::best ... ok
[INFO] [stdout] test insertion_sort::worst ... ok
[INFO] [stdout] test cocktail_shaker_sort::worst ... ok
[INFO] [stdout] test linear_search::in_array ... ok
[INFO] [stdout] test linear_search::worst ... ok
[INFO] [stdout] test linear_search::best ... ok
[INFO] [stdout] test selection_search::worst ... ok
[INFO] [stdout] test linear_search::not_in_array ... ok
[INFO] [stdout] test selection_search::best ... 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" "06fa1f46bc81ef88fa8c2e16bdf6d416fe0978bfacc88ce5a0cf5ce32e6007a5"`
[INFO] running `"docker" "rm" "-f" "06fa1f46bc81ef88fa8c2e16bdf6d416fe0978bfacc88ce5a0cf5ce32e6007a5"`
[INFO] [stdout] 06fa1f46bc81ef88fa8c2e16bdf6d416fe0978bfacc88ce5a0cf5ce32e6007a5