[INFO] cloning repository https://github.com/didof/leet_code_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/didof/leet_code_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdidof%2Fleet_code_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdidof%2Fleet_code_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c3dfe16a241ba3f1abfcf56978361b8b14f448a8
[INFO] checking didof/leet_code_rust against try#39605810efb1a0d52f955bfba9e4eec7a01d5deb for pr-153692
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdidof%2Fleet_code_rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/didof/leet_code_rust
[INFO] finished tweaking git repo https://github.com/didof/leet_code_rust
[INFO] tweaked toml for git repo https://github.com/didof/leet_code_rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/didof/leet_code_rust on toolchain 39605810efb1a0d52f955bfba9e4eec7a01d5deb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/didof/leet_code_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d52ca68a7d95e62619f8b78a51349987b2f38043c72cb273c1a61ec70f35e18d
[INFO] running `Command { std: "docker" "start" "-a" "d52ca68a7d95e62619f8b78a51349987b2f38043c72cb273c1a61ec70f35e18d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d52ca68a7d95e62619f8b78a51349987b2f38043c72cb273c1a61ec70f35e18d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d52ca68a7d95e62619f8b78a51349987b2f38043c72cb273c1a61ec70f35e18d", kill_on_drop: false }`
[INFO] [stdout] d52ca68a7d95e62619f8b78a51349987b2f38043c72cb273c1a61ec70f35e18d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6fc453075209a32c8f8b329ddf4ce6c36b12c8cd786a02f502dece5425bd8a74
[INFO] running `Command { std: "docker" "start" "-a" "6fc453075209a32c8f8b329ddf4ce6c36b12c8cd786a02f502dece5425bd8a74", kill_on_drop: false }`
[INFO] [stderr]     Checking leet_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `PalindromeNumber` is never constructed
[INFO] [stdout]  --> src/easy/id9_palindrome_number.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct PalindromeNumber;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `is_palindrome` is never used
[INFO] [stdout]  --> src/easy/id9_palindrome_number.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl PalindromeNumber {
[INFO] [stdout]   | --------------------- associated function in this implementation
[INFO] [stdout] 6 |     fn is_palindrome(mut x: i32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RomanNumbers` is never constructed
[INFO] [stdout]  --> src/easy/id13_roman_numbers.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct RomanNumbers;
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_roman_to_int32` is never used
[INFO] [stdout]  --> src/easy/id13_roman_numbers.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl RomanNumbers {
[INFO] [stdout]   | ----------------- associated function in this implementation
[INFO] [stdout] 6 |     fn from_roman_to_int32(rn: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TwoSum` is never constructed
[INFO] [stdout]  --> src/easy/id1_two_sum.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct TwoSum;
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `brute_force`, `two_pass_hash_map`, and `one_pass_hash_map` are never used
[INFO] [stdout]   --> src/easy/id1_two_sum.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl TwoSum {
[INFO] [stdout]    | ----------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn brute_force(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn two_pass_hash_map(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn one_pass_hash_map(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "6fc453075209a32c8f8b329ddf4ce6c36b12c8cd786a02f502dece5425bd8a74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fc453075209a32c8f8b329ddf4ce6c36b12c8cd786a02f502dece5425bd8a74", kill_on_drop: false }`
[INFO] [stdout] 6fc453075209a32c8f8b329ddf4ce6c36b12c8cd786a02f502dece5425bd8a74