[INFO] cloning repository https://github.com/BigbysHand/Rust-Leet-Solutions
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BigbysHand/Rust-Leet-Solutions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBigbysHand%2FRust-Leet-Solutions", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBigbysHand%2FRust-Leet-Solutions'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bfdcd712404c6b91907582436ebfe8db07df17e1
[INFO] checking BigbysHand/Rust-Leet-Solutions against master#a26e97be8826d408309fffbd8168362365719f50 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBigbysHand%2FRust-Leet-Solutions" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BigbysHand/Rust-Leet-Solutions on toolchain a26e97be8826d408309fffbd8168362365719f50
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BigbysHand/Rust-Leet-Solutions
[INFO] finished tweaking git repo https://github.com/BigbysHand/Rust-Leet-Solutions
[INFO] tweaked toml for git repo https://github.com/BigbysHand/Rust-Leet-Solutions written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/BigbysHand/Rust-Leet-Solutions 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" "+a26e97be8826d408309fffbd8168362365719f50" "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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2119d8781c17dabf2b1fc8a5f4657982424de1cfede137333ba960abb0445fc
[INFO] running `Command { std: "docker" "start" "-a" "f2119d8781c17dabf2b1fc8a5f4657982424de1cfede137333ba960abb0445fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2119d8781c17dabf2b1fc8a5f4657982424de1cfede137333ba960abb0445fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2119d8781c17dabf2b1fc8a5f4657982424de1cfede137333ba960abb0445fc", kill_on_drop: false }`
[INFO] [stdout] f2119d8781c17dabf2b1fc8a5f4657982424de1cfede137333ba960abb0445fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0129c450a4297ecb2ee538c6e8c320f7db961574d5f29c6ee85b555c5a416f82
[INFO] running `Command { std: "docker" "start" "-a" "0129c450a4297ecb2ee538c6e8c320f7db961574d5f29c6ee85b555c5a416f82", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-leet-solutions v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/palindrome.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |         if (digits[front] != digits[back])
[INFO] [stdout]    |            ^                             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 24 -         if (digits[front] != digits[back])
[INFO] [stdout] 24 +         if digits[front] != digits[back]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/palindrome.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |         if (digits[front] != digits[back])
[INFO] [stdout]    |            ^                             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 24 -         if (digits[front] != digits[back])
[INFO] [stdout] 24 +         if digits[front] != digits[back]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/palindrome.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     for i in 0..digits.len() / 2
[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: function `is_palindrome` is never used
[INFO] [stdout]  --> src/palindrome.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn is_palindrome(x: i32) -> bool
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `group_anagrams` is never used
[INFO] [stdout]  --> src/group_anagrams.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn group_anagrams(strs: Vec<String>) -> Vec<Vec<String>>
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/palindrome.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     for i in 0..digits.len() / 2
[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: function `is_palindrome` is never used
[INFO] [stdout]  --> src/palindrome.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn is_palindrome(x: i32) -> bool
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `group_anagrams` is never used
[INFO] [stdout]  --> src/group_anagrams.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn group_anagrams(strs: Vec<String>) -> Vec<Vec<String>>
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "0129c450a4297ecb2ee538c6e8c320f7db961574d5f29c6ee85b555c5a416f82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0129c450a4297ecb2ee538c6e8c320f7db961574d5f29c6ee85b555c5a416f82", kill_on_drop: false }`
[INFO] [stdout] 0129c450a4297ecb2ee538c6e8c320f7db961574d5f29c6ee85b555c5a416f82
