[INFO] updating cached repository fa93hws/CLRS
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/fa93hws/CLRS
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/fa93hws/CLRS" "work/ex/beta-1.38-1/sources/1.37.0/gh/fa93hws/CLRS"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/fa93hws/CLRS'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/fa93hws/CLRS" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fa93hws/CLRS"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fa93hws/CLRS'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 40e5e5b7f15f2ea04e6e3d071e20185e55a14df8
[INFO] sha for GitHub repo fa93hws/CLRS: 40e5e5b7f15f2ea04e6e3d071e20185e55a14df8
[INFO] validating manifest of fa93hws/CLRS 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 fa93hws/CLRS 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 fa93hws/CLRS
[INFO] finished frobbing fa93hws/CLRS
[INFO] frobbed toml for fa93hws/CLRS written to work/ex/beta-1.38-1/sources/1.37.0/gh/fa93hws/CLRS/Cargo.toml
[INFO] started frobbing fa93hws/CLRS
[INFO] finished frobbing fa93hws/CLRS
[INFO] frobbed toml for fa93hws/CLRS written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fa93hws/CLRS/Cargo.toml
[INFO] crate fa93hws/CLRS 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 fa93hws/CLRS 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/fa93hws/CLRS:/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] c480206b3505135259e7a98b4fd5be9e6d4e3f6901a0f759f57e22c7af0a2e3b
[INFO] running `"docker" "start" "-a" "c480206b3505135259e7a98b4fd5be9e6d4e3f6901a0f759f57e22c7af0a2e3b"`
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling clrs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `sort`
[INFO] [stderr]  --> src/sort/quick_sort.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn sort(arr: &mut Vec<i32>) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sort_rec`
[INFO] [stderr]  --> src/sort/quick_sort.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn sort_rec(arr: &mut Vec<i32>, begin: usize, end: usize) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `partition`
[INFO] [stderr]   --> src/sort/quick_sort.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn partition(arr: &mut Vec<i32>, begin: usize, end: usize, pivot: usize) -> usize {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MaxHeap`
[INFO] [stderr]  --> src/my_collections/heap/array_heap.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct MaxHeap {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `panic_if_empty`
[INFO] [stderr]  --> src/my_collections/heap/array_heap.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn panic_if_empty(arr: &Vec<i32>) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/my_collections/heap/array_heap.rs:12:3
[INFO] [stderr]    |
[INFO] [stderr] 12 |   pub fn new(arr: &Vec<i32>) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]   --> src/my_collections/heap/array_heap.rs:20:3
[INFO] [stderr]    |
[INFO] [stderr] 20 |   pub fn size(&self) -> usize { self.array.len() }
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_max`
[INFO] [stderr]   --> src/my_collections/heap/array_heap.rs:22:3
[INFO] [stderr]    |
[INFO] [stderr] 22 |   pub fn get_max(&self) -> i32 {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `extract_max`
[INFO] [stderr]   --> src/my_collections/heap/array_heap.rs:27:3
[INFO] [stderr]    |
[INFO] [stderr] 27 |   pub fn extract_max(&mut self) -> i32 {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `increase_key`
[INFO] [stderr]   --> src/my_collections/heap/array_heap.rs:35:3
[INFO] [stderr]    |
[INFO] [stderr] 35 |   pub fn increase_key(&mut self, idx: usize, value: i32) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert`
[INFO] [stderr]   --> src/my_collections/heap/array_heap.rs:52:3
[INFO] [stderr]    |
[INFO] [stderr] 52 |   pub fn insert(&mut self, value: i32) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `delete`
[INFO] [stderr]   --> src/my_collections/heap/array_heap.rs:57:3
[INFO] [stderr]    |
[INFO] [stderr] 57 |   pub fn delete(&mut self, idx: usize) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_parent`
[INFO] [stderr]   --> src/my_collections/heap/array_heap.rs:86:1
[INFO] [stderr]    |
[INFO] [stderr] 86 | fn find_parent(idx: usize) -> usize { idx >> 1 }
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.34s
[INFO] running `"docker" "inspect" "c480206b3505135259e7a98b4fd5be9e6d4e3f6901a0f759f57e22c7af0a2e3b"`
[INFO] running `"docker" "rm" "-f" "c480206b3505135259e7a98b4fd5be9e6d4e3f6901a0f759f57e22c7af0a2e3b"`
[INFO] [stdout] c480206b3505135259e7a98b4fd5be9e6d4e3f6901a0f759f57e22c7af0a2e3b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/fa93hws/CLRS:/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] 5403050c8365e315556b318b390844367cd62531efa9e2a2a146ec3335f3aeb0
[INFO] running `"docker" "start" "-a" "5403050c8365e315556b318b390844367cd62531efa9e2a2a146ec3335f3aeb0"`
[INFO] [stderr]    Compiling clrs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `sort`
[INFO] [stderr]  --> src/sort/quick_sort.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn sort(arr: &mut Vec<i32>) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sort_rec`
[INFO] [stderr]  --> src/sort/quick_sort.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn sort_rec(arr: &mut Vec<i32>, begin: usize, end: usize) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_max_subarray_rec`
[INFO] [stderr]    --> src/max_subarray/binary_search.rs:100:3
[INFO] [stderr]     |
[INFO] [stderr] 100 |   fn find_max_subarray_rec() {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert`
[INFO] [stderr]   --> src/my_collections/heap/array_heap.rs:52:3
[INFO] [stderr]    |
[INFO] [stderr] 52 |   pub fn insert(&mut self, value: i32) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `"docker" "inspect" "5403050c8365e315556b318b390844367cd62531efa9e2a2a146ec3335f3aeb0"`
[INFO] running `"docker" "rm" "-f" "5403050c8365e315556b318b390844367cd62531efa9e2a2a146ec3335f3aeb0"`
[INFO] [stdout] 5403050c8365e315556b318b390844367cd62531efa9e2a2a146ec3335f3aeb0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/fa93hws/CLRS:/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] 2779af0ce925e3d1b137d548adf3341c95ec520bf48cbe59b4d94784c66ba333
[INFO] running `"docker" "start" "-a" "2779af0ce925e3d1b137d548adf3341c95ec520bf48cbe59b4d94784c66ba333"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/clrs-d8e96950faa72a3f
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test max_subarray::binary_search::tests::find_max_crossing_subarray ... ok
[INFO] [stdout] test max_subarray::brute_force::tests::simple ... ok
[INFO] [stdout] test my_collections::heap::array_heap::test::delete ... ok
[INFO] [stdout] test max_subarray::brute_force::tests::empty ... ok
[INFO] [stdout] test my_collections::heap::array_heap::test::find_parent ... ok
[INFO] [stdout] test max_subarray::binary_search::tests::transform ... ok
[INFO] [stdout] test my_collections::heap::array_heap::test::find_right_child ... ok
[INFO] [stdout] test my_collections::heap::array_heap::test::heap_new ... ok
[INFO] [stdout] test my_collections::heap::array_heap::test::increase_key ... ok
[INFO] [stdout] test my_collections::heap::array_heap::test::max_heapify ... ok
[INFO] [stdout] test my_collections::heap::array_heap::test::find_left_child ... ok
[INFO] [stdout] test sort::insert_sort::tests::sort ... ok
[INFO] [stdout] test sort::heap_sort::tests::sort ... ok
[INFO] [stdout] test sort::quick_sort::tests::partition ... ok
[INFO] [stdout] test sort::merge_sort::tests::sort ... ok
[INFO] [stdout] test sort::quick_sort::tests::sort ... ok
[INFO] [stdout] test test_utils::test_case::test::new ... ok
[INFO] [stdout] test test_utils::creation::test::create_random_i32_vector ... ok
[INFO] [stdout] test my_collections::heap::array_heap::test::extract_max ... ok
[INFO] [stdout] test my_collections::heap::array_heap::test::extract_max_from_empty ... ok
[INFO] [stdout] test my_collections::heap::array_heap::test::get_max_from_empty ... ok
[INFO] [stdout] test my_collections::heap::array_heap::test::delete_invalid ... ok
[INFO] [stdout] test max_subarray::iteration::tests::find ... ok
[INFO] [stdout] test max_subarray::binary_search::tests::find ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "2779af0ce925e3d1b137d548adf3341c95ec520bf48cbe59b4d94784c66ba333"`
[INFO] running `"docker" "rm" "-f" "2779af0ce925e3d1b137d548adf3341c95ec520bf48cbe59b4d94784c66ba333"`
[INFO] [stdout] 2779af0ce925e3d1b137d548adf3341c95ec520bf48cbe59b4d94784c66ba333