[INFO] cloning repository https://github.com/Axighi/leetcode-solutions
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Axighi/leetcode-solutions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAxighi%2Fleetcode-solutions", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAxighi%2Fleetcode-solutions'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] da0bfef611128c6aec75f301b85f48e4f6c39a27
[INFO] testing Axighi/leetcode-solutions 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%2FAxighi%2Fleetcode-solutions" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Axighi/leetcode-solutions 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/Axighi/leetcode-solutions
[INFO] finished tweaking git repo https://github.com/Axighi/leetcode-solutions
[INFO] tweaked toml for git repo https://github.com/Axighi/leetcode-solutions written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Axighi/leetcode-solutions 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 2b4a7421e67282100676803e3b3140893233b9b4a1fa4c6c89ec74b3e0aaa5f2
[INFO] running `Command { std: "docker" "start" "-a" "2b4a7421e67282100676803e3b3140893233b9b4a1fa4c6c89ec74b3e0aaa5f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b4a7421e67282100676803e3b3140893233b9b4a1fa4c6c89ec74b3e0aaa5f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b4a7421e67282100676803e3b3140893233b9b4a1fa4c6c89ec74b3e0aaa5f2", kill_on_drop: false }`
[INFO] [stdout] 2b4a7421e67282100676803e3b3140893233b9b4a1fa4c6c89ec74b3e0aaa5f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 8c091604750047aecdea413ff4b0bcb08040d4bd1d6545c5701516ed12acec38
[INFO] running `Command { std: "docker" "start" "-a" "8c091604750047aecdea413ff4b0bcb08040d4bd1d6545c5701516ed12acec38", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling leetcode-solutions v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/solutions/delete_duplicates.rs:34:7
[INFO] [stdout]    |
[INFO] [stdout] 34 |       std::mem::replace(&mut b1.next, b2_next);
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "8c091604750047aecdea413ff4b0bcb08040d4bd1d6545c5701516ed12acec38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c091604750047aecdea413ff4b0bcb08040d4bd1d6545c5701516ed12acec38", kill_on_drop: false }`
[INFO] [stdout] 8c091604750047aecdea413ff4b0bcb08040d4bd1d6545c5701516ed12acec38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 67cb67ee5b00b027608f3e84ee46477697ba0a0e7403985e0f138e3c432adf19
[INFO] running `Command { std: "docker" "start" "-a" "67cb67ee5b00b027608f3e84ee46477697ba0a0e7403985e0f138e3c432adf19", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode-solutions v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/solutions/delete_duplicates.rs:34:7
[INFO] [stdout]    |
[INFO] [stdout] 34 |       std::mem::replace(&mut b1.next, b2_next);
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "67cb67ee5b00b027608f3e84ee46477697ba0a0e7403985e0f138e3c432adf19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67cb67ee5b00b027608f3e84ee46477697ba0a0e7403985e0f138e3c432adf19", kill_on_drop: false }`
[INFO] [stdout] 67cb67ee5b00b027608f3e84ee46477697ba0a0e7403985e0f138e3c432adf19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 65a999b0292f04b958e1c342d93ea76ecf7bc7826e6f6f0016e781e6bbcd170d
[INFO] running `Command { std: "docker" "start" "-a" "65a999b0292f04b958e1c342d93ea76ecf7bc7826e6f6f0016e781e6bbcd170d", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout] running 16 tests
[INFO] [stderr]   --> src/solutions/delete_duplicates.rs:34:7
[INFO] [stderr]    |
[INFO] [stderr] 34 |       std::mem::replace(&mut b1.next, b2_next);
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode-solutions` (bin "leetcode-solutions" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/leetcode_solutions-ffe9a7caa07b9165)
[INFO] [stdout] test solutions::climb_stairs::hooyah ... ok
[INFO] [stdout] test solutions::convert_to_title::hooyah ... ok
[INFO] [stdout] test solutions::add_binary::hooyah ... ok
[INFO] [stdout] test solutions::get_row::hooyah ... ok
[INFO] [stdout] test solutions::contains_duplicate::hooyah ... ok
[INFO] [stdout] test solutions::find_duplicates::hooyah ... ok
[INFO] [stdout] test solutions::roman_to_int::hooyah ... ok
[INFO] [stdout] test solutions::is_power_of_two::hooyah ... ok
[INFO] [stdout] test solutions::two_sum::hooyah ... ok
[INFO] [stdout] test solutions::max_sub_array::hooyah ... ok
[INFO] [stdout] test solutions::single_number::hooyah ... ok
[INFO] [stdout] test solutions::merge::hooyah ... ok
[INFO] [stdout] test solutions::plus_one::hooyah ... ok
[INFO] [stdout] test solutions::sqrt_x::hooyah ... ok
[INFO] [stdout] test solutions::length_of_last_word::hooyah ... ok
[INFO] [stdout] test solutions::max_profit::hooyah ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "65a999b0292f04b958e1c342d93ea76ecf7bc7826e6f6f0016e781e6bbcd170d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65a999b0292f04b958e1c342d93ea76ecf7bc7826e6f6f0016e781e6bbcd170d", kill_on_drop: false }`
[INFO] [stdout] 65a999b0292f04b958e1c342d93ea76ecf7bc7826e6f6f0016e781e6bbcd170d