[INFO] updating cached repository https://github.com/aprilyzl0405/leetcode-rust
[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] 7133a18f7d97727d623c913888b7039eaf0453aa
[INFO] testing aprilyzl0405/leetcode-rust against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faprilyzl0405%2Fleetcode-rust" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aprilyzl0405/leetcode-rust 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/aprilyzl0405/leetcode-rust
[INFO] finished tweaking git repo https://github.com/aprilyzl0405/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/aprilyzl0405/leetcode-rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/aprilyzl0405/leetcode-rust 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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] b1150236ebed46aea1e3981b0f57ed872b4cae744c156b66dfe59e3d6de735e4
[INFO] running `"docker" "start" "-a" "b1150236ebed46aea1e3981b0f57ed872b4cae744c156b66dfe59e3d6de735e4"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling leetcode-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/solutions/n146_lru_cache.rs:67:34
[INFO] [stderr]    |
[INFO] [stderr] 67 |                 (Some(ptr), Some(unsafe { (*entry).val }))
[INFO] [stderr]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]   --> src/solutions/n1_two_sum.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `two_sum`
[INFO] [stderr]   --> src/solutions/n1_two_sum.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/solutions/n15_3_sum.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub struct Solution {}
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `three_sum`
[INFO] [stderr]   --> src/solutions/n15_3_sum.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn three_sum(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `three_sum_2`
[INFO] [stderr]   --> src/solutions/n15_3_sum.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     pub fn three_sum_2(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `two_sum`
[INFO] [stderr]   --> src/solutions/n15_3_sum.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> HashSet<Vec<i32>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `LRUEntry`
[INFO] [stderr]   --> src/solutions/n146_lru_cache.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | struct LRUEntry {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/solutions/n146_lru_cache.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn new(key: i32, val: i32) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `LRUCache`
[INFO] [stderr]   --> src/solutions/n146_lru_cache.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 31 | struct LRUCache {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/solutions/n146_lru_cache.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn new(capacity: i32) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/solutions/n146_lru_cache.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn get(&mut self, key: i32) -> i32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `put`
[INFO] [stderr]   --> src/solutions/n146_lru_cache.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     fn put(&mut self, key: i32, value: i32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pop`
[INFO] [stderr]    --> src/solutions/n146_lru_cache.rs:109:5
[INFO] [stderr]     |
[INFO] [stderr] 109 |     fn pop(&mut self) -> Option<Box<LRUEntry>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push`
[INFO] [stderr]    --> src/solutions/n146_lru_cache.rs:123:5
[INFO] [stderr]     |
[INFO] [stderr] 123 |     fn push(&mut self, entry: *mut LRUEntry) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `detach`
[INFO] [stderr]    --> src/solutions/n146_lru_cache.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |     fn detach(&mut self, entry: *mut LRUEntry) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "b1150236ebed46aea1e3981b0f57ed872b4cae744c156b66dfe59e3d6de735e4"`
[INFO] running `"docker" "rm" "-f" "b1150236ebed46aea1e3981b0f57ed872b4cae744c156b66dfe59e3d6de735e4"`
[INFO] [stdout] b1150236ebed46aea1e3981b0f57ed872b4cae744c156b66dfe59e3d6de735e4
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] ffe9fd0e35cbddff1139a68857ad920d51065761039d068b7d832c662e6fe709
[INFO] running `"docker" "start" "-a" "ffe9fd0e35cbddff1139a68857ad920d51065761039d068b7d832c662e6fe709"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling leetcode-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/solutions/n146_lru_cache.rs:67:34
[INFO] [stderr]    |
[INFO] [stderr] 67 |                 (Some(ptr), Some(unsafe { (*entry).val }))
[INFO] [stderr]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `"docker" "inspect" "ffe9fd0e35cbddff1139a68857ad920d51065761039d068b7d832c662e6fe709"`
[INFO] running `"docker" "rm" "-f" "ffe9fd0e35cbddff1139a68857ad920d51065761039d068b7d832c662e6fe709"`
[INFO] [stdout] ffe9fd0e35cbddff1139a68857ad920d51065761039d068b7d832c662e6fe709
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 4bf2e2d1ae1e3e6a085f03c94319bac43bb6778bfd5224213507050e21b8eef7
[INFO] running `"docker" "start" "-a" "4bf2e2d1ae1e3e6a085f03c94319bac43bb6778bfd5224213507050e21b8eef7"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/solutions/n146_lru_cache.rs:67:34
[INFO] [stderr]    |
[INFO] [stderr] 67 |                 (Some(ptr), Some(unsafe { (*entry).val }))
[INFO] [stderr]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/leetcode_rust-fc5969fc9daeee57
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test solutions::n1_two_sum::tests::test_1 ... ok
[INFO] [stdout] test solutions::n146_lru_cache::test::test_146 ... ok
[INFO] [stdout] test solutions::n15_3_sum::tests::test_15 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4bf2e2d1ae1e3e6a085f03c94319bac43bb6778bfd5224213507050e21b8eef7"`
[INFO] running `"docker" "rm" "-f" "4bf2e2d1ae1e3e6a085f03c94319bac43bb6778bfd5224213507050e21b8eef7"`
[INFO] [stdout] 4bf2e2d1ae1e3e6a085f03c94319bac43bb6778bfd5224213507050e21b8eef7