[INFO] updating cached repository https://github.com/kazukiyoshida/data-structures-and-algorithms [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] 76dc6f7ff5231fc82cd4dadbec250a995e484fd6 [INFO] testing kazukiyoshida/data-structures-and-algorithms against 1.44.0 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazukiyoshida%2Fdata-structures-and-algorithms" "/workspace/builds/worker-8/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kazukiyoshida/data-structures-and-algorithms on toolchain 1.44.0 [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/kazukiyoshida/data-structures-and-algorithms [INFO] finished tweaking git repo https://github.com/kazukiyoshida/data-structures-and-algorithms [INFO] tweaked toml for git repo https://github.com/kazukiyoshida/data-structures-and-algorithms written to /workspace/builds/worker-8/source/Cargo.toml [INFO] crate git repo https://github.com/kazukiyoshida/data-structures-and-algorithms already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+1.44.0" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] f2027a03e8589af68f22b86d3af40d127afdba40aa45b80c7130161e6b777a92 [INFO] running `"docker" "start" "-a" "f2027a03e8589af68f22b86d3af40d127afdba40aa45b80c7130161e6b777a92"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling data-structures-and-algorithms v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/linked_list.rs:30:5 [INFO] [stderr] | [INFO] [stderr] 30 | fn new(v: String) -> Rc> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new_empty` [INFO] [stderr] --> src/linked_list.rs:48:5 [INFO] [stderr] | [INFO] [stderr] 48 | pub fn new_empty() -> TransactionLog { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `append` [INFO] [stderr] --> src/linked_list.rs:56:5 [INFO] [stderr] | [INFO] [stderr] 56 | pub fn append(&mut self, v: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `pop` [INFO] [stderr] --> src/linked_list.rs:66:5 [INFO] [stderr] | [INFO] [stderr] 66 | pub fn pop(&mut self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/doubly_linked_list.rs:22:5 [INFO] [stderr] | [INFO] [stderr] 22 | fn new(v: String) -> Rc> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new_empty` [INFO] [stderr] --> src/doubly_linked_list.rs:41:5 [INFO] [stderr] | [INFO] [stderr] 41 | pub fn new_empty() -> BetterTransactionLog { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `append` [INFO] [stderr] --> src/doubly_linked_list.rs:49:5 [INFO] [stderr] | [INFO] [stderr] 49 | pub fn append(&mut self, v: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `pop` [INFO] [stderr] --> src/doubly_linked_list.rs:63:5 [INFO] [stderr] | [INFO] [stderr] 63 | pub fn pop(&mut self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `iter` [INFO] [stderr] --> src/doubly_linked_list.rs:82:5 [INFO] [stderr] | [INFO] [stderr] 82 | pub fn iter(&self) -> ListIterator { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `back_iter` [INFO] [stderr] --> src/doubly_linked_list.rs:86:5 [INFO] [stderr] | [INFO] [stderr] 86 | pub fn back_iter(self) -> ListIterator { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 10 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.64s [INFO] running `"docker" "inspect" "f2027a03e8589af68f22b86d3af40d127afdba40aa45b80c7130161e6b777a92"` [INFO] running `"docker" "rm" "-f" "f2027a03e8589af68f22b86d3af40d127afdba40aa45b80c7130161e6b777a92"` [INFO] [stdout] f2027a03e8589af68f22b86d3af40d127afdba40aa45b80c7130161e6b777a92 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+1.44.0" "test" "--frozen" "--no-run"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 283a9399178cc479b25b8eac33c329304ba8710c14184a99cde46444d0f35e8d [INFO] running `"docker" "start" "-a" "283a9399178cc479b25b8eac33c329304ba8710c14184a99cde46444d0f35e8d"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling data-structures-and-algorithms v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/linked_list.rs:30:5 [INFO] [stderr] | [INFO] [stderr] 30 | fn new(v: String) -> Rc> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new_empty` [INFO] [stderr] --> src/linked_list.rs:48:5 [INFO] [stderr] | [INFO] [stderr] 48 | pub fn new_empty() -> TransactionLog { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `append` [INFO] [stderr] --> src/linked_list.rs:56:5 [INFO] [stderr] | [INFO] [stderr] 56 | pub fn append(&mut self, v: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `pop` [INFO] [stderr] --> src/linked_list.rs:66:5 [INFO] [stderr] | [INFO] [stderr] 66 | pub fn pop(&mut self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/doubly_linked_list.rs:22:5 [INFO] [stderr] | [INFO] [stderr] 22 | fn new(v: String) -> Rc> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new_empty` [INFO] [stderr] --> src/doubly_linked_list.rs:41:5 [INFO] [stderr] | [INFO] [stderr] 41 | pub fn new_empty() -> BetterTransactionLog { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `append` [INFO] [stderr] --> src/doubly_linked_list.rs:49:5 [INFO] [stderr] | [INFO] [stderr] 49 | pub fn append(&mut self, v: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `pop` [INFO] [stderr] --> src/doubly_linked_list.rs:63:5 [INFO] [stderr] | [INFO] [stderr] 63 | pub fn pop(&mut self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `iter` [INFO] [stderr] --> src/doubly_linked_list.rs:82:5 [INFO] [stderr] | [INFO] [stderr] 82 | pub fn iter(&self) -> ListIterator { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `back_iter` [INFO] [stderr] --> src/doubly_linked_list.rs:86:5 [INFO] [stderr] | [INFO] [stderr] 86 | pub fn back_iter(self) -> ListIterator { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 10 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: method is never used: `pop` [INFO] [stderr] --> src/doubly_linked_list.rs:63:5 [INFO] [stderr] | [INFO] [stderr] 63 | pub fn pop(&mut self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `iter` [INFO] [stderr] --> src/doubly_linked_list.rs:82:5 [INFO] [stderr] | [INFO] [stderr] 82 | pub fn iter(&self) -> ListIterator { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `back_iter` [INFO] [stderr] --> src/doubly_linked_list.rs:86:5 [INFO] [stderr] | [INFO] [stderr] 86 | pub fn back_iter(self) -> ListIterator { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.02s [INFO] running `"docker" "inspect" "283a9399178cc479b25b8eac33c329304ba8710c14184a99cde46444d0f35e8d"` [INFO] running `"docker" "rm" "-f" "283a9399178cc479b25b8eac33c329304ba8710c14184a99cde46444d0f35e8d"` [INFO] [stdout] 283a9399178cc479b25b8eac33c329304ba8710c14184a99cde46444d0f35e8d [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+1.44.0" "test" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 9fa042a113a8b9ea67087761492c4d2141d552f0f6d982b7cc4630c6912e7d2b [INFO] running `"docker" "start" "-a" "9fa042a113a8b9ea67087761492c4d2141d552f0f6d982b7cc4630c6912e7d2b"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/linked_list.rs:30:5 [INFO] [stderr] | [INFO] [stderr] 30 | fn new(v: String) -> Rc> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new_empty` [INFO] [stderr] --> src/linked_list.rs:48:5 [INFO] [stderr] | [INFO] [stderr] 48 | pub fn new_empty() -> TransactionLog { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `append` [INFO] [stderr] --> src/linked_list.rs:56:5 [INFO] [stderr] | [INFO] [stderr] 56 | pub fn append(&mut self, v: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `pop` [INFO] [stderr] --> src/linked_list.rs:66:5 [INFO] [stderr] | [INFO] [stderr] 66 | pub fn pop(&mut self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/doubly_linked_list.rs:22:5 [INFO] [stderr] | [INFO] [stderr] 22 | fn new(v: String) -> Rc> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new_empty` [INFO] [stderr] --> src/doubly_linked_list.rs:41:5 [INFO] [stderr] | [INFO] [stderr] 41 | pub fn new_empty() -> BetterTransactionLog { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `append` [INFO] [stderr] --> src/doubly_linked_list.rs:49:5 [INFO] [stderr] | [INFO] [stderr] 49 | pub fn append(&mut self, v: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `pop` [INFO] [stderr] --> src/doubly_linked_list.rs:63:5 [INFO] [stderr] | [INFO] [stderr] 63 | pub fn pop(&mut self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `iter` [INFO] [stderr] --> src/doubly_linked_list.rs:82:5 [INFO] [stderr] | [INFO] [stderr] 82 | pub fn iter(&self) -> ListIterator { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `back_iter` [INFO] [stderr] --> src/doubly_linked_list.rs:86:5 [INFO] [stderr] | [INFO] [stderr] 86 | pub fn back_iter(self) -> ListIterator { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 10 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: method is never used: `pop` [INFO] [stderr] --> src/doubly_linked_list.rs:63:5 [INFO] [stderr] | [INFO] [stderr] 63 | pub fn pop(&mut self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `iter` [INFO] [stderr] --> src/doubly_linked_list.rs:82:5 [INFO] [stderr] | [INFO] [stderr] 82 | pub fn iter(&self) -> ListIterator { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `back_iter` [INFO] [stderr] --> src/doubly_linked_list.rs:86:5 [INFO] [stderr] | [INFO] [stderr] 86 | pub fn back_iter(self) -> ListIterator { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/data_structures_and_algorithms-d97d5e1dce875e7d [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test doubly_linked_list::test_doubly_linked_list ... ok [INFO] [stderr] Doc-tests data-structures-and-algorithms [INFO] [stdout] test linked_list::test_linked_list ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [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" "9fa042a113a8b9ea67087761492c4d2141d552f0f6d982b7cc4630c6912e7d2b"` [INFO] running `"docker" "rm" "-f" "9fa042a113a8b9ea67087761492c4d2141d552f0f6d982b7cc4630c6912e7d2b"` [INFO] [stdout] 9fa042a113a8b9ea67087761492c4d2141d552f0f6d982b7cc4630c6912e7d2b