[INFO] cloning repository https://github.com/themarolt/leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/themarolt/leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemarolt%2Fleetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemarolt%2Fleetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 794f81848c4b89d82347f33697d67f7a4ef72f49
[INFO] testing themarolt/leetcode against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemarolt%2Fleetcode" "/workspace/builds/worker-68/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-68/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/themarolt/leetcode on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/themarolt/leetcode
[INFO] finished tweaking git repo https://github.com/themarolt/leetcode
[INFO] tweaked toml for git repo https://github.com/themarolt/leetcode written to /workspace/builds/worker-68/source/Cargo.toml
[INFO] crate git repo https://github.com/themarolt/leetcode already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 573d5458975e752403af620463107d6bab4b3b1c036ec7c87304a596a05c5c61
[INFO] running `Command { std: "docker" "start" "-a" "573d5458975e752403af620463107d6bab4b3b1c036ec7c87304a596a05c5c61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "573d5458975e752403af620463107d6bab4b3b1c036ec7c87304a596a05c5c61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "573d5458975e752403af620463107d6bab4b3b1c036ec7c87304a596a05c5c61", kill_on_drop: false }`
[INFO] [stdout] 573d5458975e752403af620463107d6bab4b3b1c036ec7c87304a596a05c5c61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 895ef6346a76723d84652beaf45761e5f5e47f2b50d8e8b8aa7c0b4cbcc144d1
[INFO] running `Command { std: "docker" "start" "-a" "895ef6346a76723d84652beaf45761e5f5e47f2b50d8e8b8aa7c0b4cbcc144d1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/problems/lc_13_roman_to_integer.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution {}
[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: `roman_to_int`
[INFO] [stdout]  --> src/problems/lc_13_roman_to_integer.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn roman_to_int(s: String) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/problems/lc_14_longest_common_prefix.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `longest_common_prefix`
[INFO] [stdout]  --> src/problems/lc_14_longest_common_prefix.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn longest_common_prefix(strs: Vec<String>) -> String {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/problems/lc_1_two_sum.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `two_sum`
[INFO] [stdout]  --> src/problems/lc_1_two_sum.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/problems/lc_20_valid_parentheses.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_closing`
[INFO] [stdout]  --> src/problems/lc_20_valid_parentheses.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn get_closing(open: char) -> char {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_open`
[INFO] [stdout]   --> src/problems/lc_20_valid_parentheses.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn is_open(c: char) -> bool {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_valid`
[INFO] [stdout]   --> src/problems/lc_20_valid_parentheses.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn is_valid(s: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/problems/lc_9_palindrome_number.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_palindrome`
[INFO] [stdout]  --> src/problems/lc_9_palindrome_number.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn is_palindrome(x: i32) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.87s
[INFO] running `Command { std: "docker" "inspect" "895ef6346a76723d84652beaf45761e5f5e47f2b50d8e8b8aa7c0b4cbcc144d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "895ef6346a76723d84652beaf45761e5f5e47f2b50d8e8b8aa7c0b4cbcc144d1", kill_on_drop: false }`
[INFO] [stdout] 895ef6346a76723d84652beaf45761e5f5e47f2b50d8e8b8aa7c0b4cbcc144d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00bcb1c4819fc91145f59730b0461a05a6a0571e9067c6926382ce33c5d3e079
[INFO] running `Command { std: "docker" "start" "-a" "00bcb1c4819fc91145f59730b0461a05a6a0571e9067c6926382ce33c5d3e079", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 8.42s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/leetcode-cca0003713a2724e)
[INFO] running `Command { std: "docker" "inspect" "00bcb1c4819fc91145f59730b0461a05a6a0571e9067c6926382ce33c5d3e079", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00bcb1c4819fc91145f59730b0461a05a6a0571e9067c6926382ce33c5d3e079", kill_on_drop: false }`
[INFO] [stdout] 00bcb1c4819fc91145f59730b0461a05a6a0571e9067c6926382ce33c5d3e079
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dfa42ae2332701dfc310bf1b3e9897dbb2572df76a4e44a6114132896d4c6192
[INFO] running `Command { std: "docker" "start" "-a" "dfa42ae2332701dfc310bf1b3e9897dbb2572df76a4e44a6114132896d4c6192", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.69s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/leetcode-cca0003713a2724e)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test problems::lc_13_roman_to_integer::tests::example1 ... ok
[INFO] [stdout] test problems::lc_13_roman_to_integer::tests::example2 ... ok
[INFO] [stdout] test problems::lc_14_longest_common_prefix::tests::example1 ... ok
[INFO] [stdout] test problems::lc_13_roman_to_integer::tests::example3 ... ok
[INFO] [stdout] test problems::lc_14_longest_common_prefix::tests::example2 ... ok
[INFO] [stdout] test problems::lc_1_two_sum::tests::example3 ... ok
[INFO] [stdout] test problems::lc_1_two_sum::tests::example1 ... ok
[INFO] [stdout] test problems::lc_1_two_sum::tests::example2 ... ok
[INFO] [stdout] test problems::lc_20_valid_parentheses::tests::example1 ... ok
[INFO] [stdout] test problems::lc_20_valid_parentheses::tests::example2 ... ok
[INFO] [stdout] test problems::lc_20_valid_parentheses::tests::example3 ... ok
[INFO] [stdout] test problems::lc_9_palindrome_number::tests::example1 ... ok
[INFO] [stdout] test problems::lc_9_palindrome_number::tests::example2 ... ok
[INFO] [stdout] test problems::lc_9_palindrome_number::tests::example3 ... ok
[INFO] [stdout] test problems::lc_9_palindrome_number::tests::example4 ... ok
[INFO] [stdout] test problems::lc_9_palindrome_number::tests::example5 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dfa42ae2332701dfc310bf1b3e9897dbb2572df76a4e44a6114132896d4c6192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfa42ae2332701dfc310bf1b3e9897dbb2572df76a4e44a6114132896d4c6192", kill_on_drop: false }`
[INFO] [stdout] dfa42ae2332701dfc310bf1b3e9897dbb2572df76a4e44a6114132896d4c6192