[INFO] cloning repository https://github.com/olafurkarl/leetcode_rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/olafurkarl/leetcode_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Folafurkarl%2Fleetcode_rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Folafurkarl%2Fleetcode_rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1c47aecf8d9c092f8c426a29c337272fafec91ce [INFO] testing olafurkarl/leetcode_rust against beta-2022-02-22 for beta-1.60-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Folafurkarl%2Fleetcode_rust" "/workspace/builds/worker-8/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/olafurkarl/leetcode_rust on toolchain beta-2022-02-22 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/olafurkarl/leetcode_rust [INFO] finished tweaking git repo https://github.com/olafurkarl/leetcode_rust [INFO] tweaked toml for git repo https://github.com/olafurkarl/leetcode_rust written to /workspace/builds/worker-8/source/Cargo.toml [INFO] crate git repo https://github.com/olafurkarl/leetcode_rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7f496eb087bec1f1a7059f8669abf6ae37ace3776f743291029a1ffb1f7a2e32 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "7f496eb087bec1f1a7059f8669abf6ae37ace3776f743291029a1ffb1f7a2e32", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7f496eb087bec1f1a7059f8669abf6ae37ace3776f743291029a1ffb1f7a2e32", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7f496eb087bec1f1a7059f8669abf6ae37ace3776f743291029a1ffb1f7a2e32", kill_on_drop: false }` [INFO] [stdout] 7f496eb087bec1f1a7059f8669abf6ae37ace3776f743291029a1ffb1f7a2e32 [INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5abde7b297537858d0347191f55a20ec2c9ec1eefaca50e3356d991d98a701e3 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "5abde7b297537858d0347191f55a20ec2c9ec1eefaca50e3356d991d98a701e3", kill_on_drop: false }` [INFO] [stderr] Compiling leetcode v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/licence_key_formatter/licence_key_formatter.rs:17:14 [INFO] [stdout] | [INFO] [stdout] 17 | for (i, c) in s.chars().rev().enumerate() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `serialize` [INFO] [stdout] --> src/tree_serializer/tree_serializer.rs:37:8 [INFO] [stdout] | [INFO] [stdout] 37 | fn serialize(&self, root: Option>>) -> String { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `deserialize` [INFO] [stdout] --> src/tree_serializer/tree_serializer.rs:78:8 [INFO] [stdout] | [INFO] [stdout] 78 | fn deserialize(&self, data: String) -> Option>> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/unique_email_addresses/unique_email_addresses.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 22 | struct Solution { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `num_unique_emails` [INFO] [stdout] --> src/unique_email_addresses/unique_email_addresses.rs:26:12 [INFO] [stdout] | [INFO] [stdout] 26 | pub fn num_unique_emails(emails: Vec) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `strip_extra_chars` [INFO] [stdout] --> src/unique_email_addresses/unique_email_addresses.rs:29:12 [INFO] [stdout] | [INFO] [stdout] 29 | fn strip_extra_chars (email: String) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/licence_key_formatter/licence_key_formatter.rs:9:8 [INFO] [stdout] | [INFO] [stdout] 9 | struct Solution { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `license_key_formatting` [INFO] [stdout] --> src/licence_key_formatter/licence_key_formatter.rs:14:12 [INFO] [stdout] | [INFO] [stdout] 14 | pub fn license_key_formatting(s: String, k: i32) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.93s [INFO] running `Command { std: "docker" "inspect" "5abde7b297537858d0347191f55a20ec2c9ec1eefaca50e3356d991d98a701e3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5abde7b297537858d0347191f55a20ec2c9ec1eefaca50e3356d991d98a701e3", kill_on_drop: false }` [INFO] [stdout] 5abde7b297537858d0347191f55a20ec2c9ec1eefaca50e3356d991d98a701e3 [INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 70ddf245371b18aebcafaba659db7f083a28d392b4a4882f09889d39678bc1cb [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "70ddf245371b18aebcafaba659db7f083a28d392b4a4882f09889d39678bc1cb", kill_on_drop: false }` [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/licence_key_formatter/licence_key_formatter.rs:17:14 [INFO] [stdout] | [INFO] [stdout] 17 | for (i, c) in s.chars().rev().enumerate() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling leetcode v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: associated function is never used: `serialize` [INFO] [stdout] --> src/tree_serializer/tree_serializer.rs:37:8 [INFO] [stdout] | [INFO] [stdout] 37 | fn serialize(&self, root: Option>>) -> String { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `deserialize` [INFO] [stdout] --> src/tree_serializer/tree_serializer.rs:78:8 [INFO] [stdout] | [INFO] [stdout] 78 | fn deserialize(&self, data: String) -> Option>> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/unique_email_addresses/unique_email_addresses.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 22 | struct Solution { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `num_unique_emails` [INFO] [stdout] --> src/unique_email_addresses/unique_email_addresses.rs:26:12 [INFO] [stdout] | [INFO] [stdout] 26 | pub fn num_unique_emails(emails: Vec) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `strip_extra_chars` [INFO] [stdout] --> src/unique_email_addresses/unique_email_addresses.rs:29:12 [INFO] [stdout] | [INFO] [stdout] 29 | fn strip_extra_chars (email: String) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/licence_key_formatter/licence_key_formatter.rs:9:8 [INFO] [stdout] | [INFO] [stdout] 9 | struct Solution { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `license_key_formatting` [INFO] [stdout] --> src/licence_key_formatter/licence_key_formatter.rs:14:12 [INFO] [stdout] | [INFO] [stdout] 14 | pub fn license_key_formatting(s: String, k: i32) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/licence_key_formatter/licence_key_formatter.rs:17:14 [INFO] [stdout] | [INFO] [stdout] 17 | for (i, c) in s.chars().rev().enumerate() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 2.08s [INFO] running `Command { std: "docker" "inspect" "70ddf245371b18aebcafaba659db7f083a28d392b4a4882f09889d39678bc1cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "70ddf245371b18aebcafaba659db7f083a28d392b4a4882f09889d39678bc1cb", kill_on_drop: false }` [INFO] [stdout] 70ddf245371b18aebcafaba659db7f083a28d392b4a4882f09889d39678bc1cb [INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] dbd171447c4ffa57a637cbfc707ca75c98e25196e4a53cb351e3956e090fd845 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "dbd171447c4ffa57a637cbfc707ca75c98e25196e4a53cb351e3956e090fd845", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/licence_key_formatter/licence_key_formatter.rs:17:14 [INFO] [stderr] | [INFO] [stderr] 17 | for (i, c) in s.chars().rev().enumerate() { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `serialize` [INFO] [stderr] --> src/tree_serializer/tree_serializer.rs:37:8 [INFO] [stderr] | [INFO] [stderr] 37 | fn serialize(&self, root: Option>>) -> String { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `deserialize` [INFO] [stderr] --> src/tree_serializer/tree_serializer.rs:78:8 [INFO] [stderr] | [INFO] [stderr] 78 | fn deserialize(&self, data: String) -> Option>> { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Solution` [INFO] [stderr] --> src/unique_email_addresses/unique_email_addresses.rs:22:8 [INFO] [stderr] | [INFO] [stderr] 22 | struct Solution { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `num_unique_emails` [INFO] [stderr] --> src/unique_email_addresses/unique_email_addresses.rs:26:12 [INFO] [stderr] | [INFO] [stderr] 26 | pub fn num_unique_emails(emails: Vec) -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `strip_extra_chars` [INFO] [stderr] --> src/unique_email_addresses/unique_email_addresses.rs:29:12 [INFO] [stderr] | [INFO] [stderr] 29 | fn strip_extra_chars (email: String) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Solution` [INFO] [stderr] --> src/licence_key_formatter/licence_key_formatter.rs:9:8 [INFO] [stderr] | [INFO] [stderr] 9 | struct Solution { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `license_key_formatting` [INFO] [stderr] --> src/licence_key_formatter/licence_key_formatter.rs:14:12 [INFO] [stderr] | [INFO] [stderr] 14 | pub fn license_key_formatting(s: String, k: i32) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `leetcode` (lib) generated 8 warnings [INFO] [stderr] warning: `leetcode` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/leetcode-d645904b26405615) [INFO] [stdout] [INFO] [stdout] running 11 tests [INFO] [stdout] test licence_key_formatter::licence_key_formatter::tests::test_solution_case_two ... ok [INFO] [stdout] test odd_even_jump::odd_even_jump::tests::test_solution_case_three ... ok [INFO] [stdout] test odd_even_jump::odd_even_jump::tests::test_solution_case_two ... ok [INFO] [stdout] test unique_email_addresses::unique_email_addresses::tests::test_solution ... ok [INFO] [stdout] test tree_serializer::tree_serializer::tests::test_serialize ... ok [INFO] [stdout] test odd_even_jump::odd_even_jump::tests::test_solution_case_five ... ok [INFO] [stdout] test odd_even_jump::odd_even_jump::tests::test_solution_case_one ... ok [INFO] [stdout] test licence_key_formatter::licence_key_formatter::tests::test_solution_case_one ... ok [INFO] [stdout] test tree_serializer::tree_serializer::tests::test_deserialize ... ok [INFO] [stdout] test odd_even_jump::odd_even_jump::tests::test_solution_case_four ... ok [INFO] [stdout] test licence_key_formatter::licence_key_formatter::tests::test_solution_case_three ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests leetcode [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; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "dbd171447c4ffa57a637cbfc707ca75c98e25196e4a53cb351e3956e090fd845", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dbd171447c4ffa57a637cbfc707ca75c98e25196e4a53cb351e3956e090fd845", kill_on_drop: false }` [INFO] [stdout] dbd171447c4ffa57a637cbfc707ca75c98e25196e4a53cb351e3956e090fd845