[INFO] updating cached repository 198d/cs_review [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/198d/cs_review [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/198d/cs_review" "work/ex/beta-1.38-1/sources/1.37.0/gh/198d/cs_review"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/198d/cs_review'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/198d/cs_review" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/198d/cs_review"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/198d/cs_review'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] b5e366f48d630028cc85c8ac05f4a716fc711dd4 [INFO] sha for GitHub repo 198d/cs_review: b5e366f48d630028cc85c8ac05f4a716fc711dd4 [INFO] validating manifest of 198d/cs_review 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 198d/cs_review 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 198d/cs_review [INFO] finished frobbing 198d/cs_review [INFO] frobbed toml for 198d/cs_review written to work/ex/beta-1.38-1/sources/1.37.0/gh/198d/cs_review/Cargo.toml [INFO] started frobbing 198d/cs_review [INFO] finished frobbing 198d/cs_review [INFO] frobbed toml for 198d/cs_review written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/198d/cs_review/Cargo.toml [INFO] crate 198d/cs_review 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 198d/cs_review 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/198d/cs_review:/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] 7555f9e5e9ce33b088769cad3ede71715ba00c22c0229aadb995889d61515a3e [INFO] running `"docker" "start" "-a" "7555f9e5e9ce33b088769cad3ede71715ba00c22c0229aadb995889d61515a3e"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling matrixmultiply v0.1.13 [INFO] [stderr] Compiling ndarray v0.7.2 [INFO] [stderr] Compiling either v1.0.2 [INFO] [stderr] Compiling num-complex v0.1.35 [INFO] [stderr] Compiling itertools v0.5.8 [INFO] [stderr] Compiling cs_review v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> src/lib.rs:3:13 [INFO] [stderr] | [INFO] [stderr] 3 | #[macro_use(s)] [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/sorting.rs:2:26 [INFO] [stderr] | [INFO] [stderr] 2 | pub fn selection_sort(mut data: &mut [T]) [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/sorting.rs:25:26 [INFO] [stderr] | [INFO] [stderr] 25 | pub fn insertion_sort(mut data: &mut [T]) [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/sorting.rs:110:19 [INFO] [stderr] | [INFO] [stderr] 110 | fn sift_down(mut data: &mut [T], start: usize, end: usize) [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning[E0505]: cannot move out of `_` because it is borrowed [INFO] [stderr] --> src/trees/binary.rs:164:19 [INFO] [stderr] | [INFO] [stderr] 162 | &mut Some(ref mut node) if node.right.is_some() => [INFO] [stderr] | ------------ borrow of value occurs here [INFO] [stderr] 163 | current = &mut node.right, [INFO] [stderr] 164 | edge => { [INFO] [stderr] | ^^^^ [INFO] [stderr] | | [INFO] [stderr] | move out of value occurs here [INFO] [stderr] | borrow later used here [INFO] [stderr] | [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] warning: method is never used: `insert` [INFO] [stderr] --> src/trees/binary.rs:128:3 [INFO] [stderr] | [INFO] [stderr] 128 | fn insert(&mut self, data: T) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `delete` [INFO] [stderr] --> src/trees/binary.rs:147:3 [INFO] [stderr] | [INFO] [stderr] 147 | fn delete(&mut self, data: &T) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `find` [INFO] [stderr] --> src/trees/binary.rs:187:3 [INFO] [stderr] | [INFO] [stderr] 187 | fn find<'a>(&'a self, data: &T) -> &Edge { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `find_mut` [INFO] [stderr] --> src/trees/binary.rs:199:3 [INFO] [stderr] | [INFO] [stderr] 199 | fn find_mut<'a>(&'a mut self, data: &T) -> &'a mut Edge { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 8.71s [INFO] running `"docker" "inspect" "7555f9e5e9ce33b088769cad3ede71715ba00c22c0229aadb995889d61515a3e"` [INFO] running `"docker" "rm" "-f" "7555f9e5e9ce33b088769cad3ede71715ba00c22c0229aadb995889d61515a3e"` [INFO] [stdout] 7555f9e5e9ce33b088769cad3ede71715ba00c22c0229aadb995889d61515a3e [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/198d/cs_review:/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] 3114c4dd7c6a18fd8af8d0dbaa20a93c818f8cbd72d475567c2a5a15e1536aa1 [INFO] running `"docker" "start" "-a" "3114c4dd7c6a18fd8af8d0dbaa20a93c818f8cbd72d475567c2a5a15e1536aa1"` [INFO] [stderr] Compiling cs_review v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> src/lib.rs:3:13 [INFO] [stderr] | [INFO] [stderr] 3 | #[macro_use(s)] [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/sorting.rs:150:27 [INFO] [stderr] | [INFO] [stderr] 150 | fn test_sort(sort_fun: &Fn(&mut [i32])) { [INFO] [stderr] | ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut [i32])` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(bare_trait_objects)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/sorting.rs:2:26 [INFO] [stderr] | [INFO] [stderr] 2 | pub fn selection_sort(mut data: &mut [T]) [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/sorting.rs:25:26 [INFO] [stderr] | [INFO] [stderr] 25 | pub fn insertion_sort(mut data: &mut [T]) [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/sorting.rs:110:19 [INFO] [stderr] | [INFO] [stderr] 110 | fn sift_down(mut data: &mut [T], start: usize, end: usize) [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning[E0505]: cannot move out of `_` because it is borrowed [INFO] [stderr] --> src/trees/binary.rs:164:19 [INFO] [stderr] | [INFO] [stderr] 162 | &mut Some(ref mut node) if node.right.is_some() => [INFO] [stderr] | ------------ borrow of value occurs here [INFO] [stderr] 163 | current = &mut node.right, [INFO] [stderr] 164 | edge => { [INFO] [stderr] | ^^^^ [INFO] [stderr] | | [INFO] [stderr] | move out of value occurs here [INFO] [stderr] | borrow later used here [INFO] [stderr] | [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.65s [INFO] running `"docker" "inspect" "3114c4dd7c6a18fd8af8d0dbaa20a93c818f8cbd72d475567c2a5a15e1536aa1"` [INFO] running `"docker" "rm" "-f" "3114c4dd7c6a18fd8af8d0dbaa20a93c818f8cbd72d475567c2a5a15e1536aa1"` [INFO] [stdout] 3114c4dd7c6a18fd8af8d0dbaa20a93c818f8cbd72d475567c2a5a15e1536aa1 [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/198d/cs_review:/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] 565c3935f7ba6c46bf71267d08cd7eab941c7c178f2b08b1da33c7cdd5cd588c [INFO] running `"docker" "start" "-a" "565c3935f7ba6c46bf71267d08cd7eab941c7c178f2b08b1da33c7cdd5cd588c"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.07s [INFO] [stderr] Running /opt/crater/target/debug/deps/cs_review-e8a24145faa1ded4 [INFO] [stdout] [INFO] [stdout] running 8 tests [INFO] [stdout] test trees::binary::test::test_delete ... ok [INFO] [stdout] test sorting::test::test_selection_sort ... ok [INFO] [stdout] test sorting::test::test_heap_sort ... ok [INFO] [stdout] test trees::binary::test::test_find ... ok [INFO] [stdout] test sorting::test::test_insertion_sort ... ok [INFO] [stdout] test sorting::test::test_merge_sort ... ok [INFO] [stdout] test trees::binary::test::test_insert ... ok [INFO] [stdout] test trees::binary::test::test_iterator ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Doc-tests cs_review [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" "565c3935f7ba6c46bf71267d08cd7eab941c7c178f2b08b1da33c7cdd5cd588c"` [INFO] running `"docker" "rm" "-f" "565c3935f7ba6c46bf71267d08cd7eab941c7c178f2b08b1da33c7cdd5cd588c"` [INFO] [stdout] 565c3935f7ba6c46bf71267d08cd7eab941c7c178f2b08b1da33c7cdd5cd588c