[INFO] cloning repository https://github.com/hqwuzhaoyi/leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hqwuzhaoyi/leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhqwuzhaoyi%2Fleetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhqwuzhaoyi%2Fleetcode'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhqwuzhaoyi%2Fleetcode: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/hqwuzhaoyi/leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hqwuzhaoyi/leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhqwuzhaoyi%2Fleetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhqwuzhaoyi%2Fleetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6eea549cfc7b7444f68c8b7d284c772348ed0241
[INFO] checking hqwuzhaoyi/leetcode against master#a9e7b30487235621751cc628f170c0f15fb215c4 for pr-136539
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhqwuzhaoyi%2Fleetcode" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hqwuzhaoyi/leetcode on toolchain a9e7b30487235621751cc628f170c0f15fb215c4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hqwuzhaoyi/leetcode
[INFO] finished tweaking git repo https://github.com/hqwuzhaoyi/leetcode
[INFO] tweaked toml for git repo https://github.com/hqwuzhaoyi/leetcode written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hqwuzhaoyi/leetcode 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" "+a9e7b30487235621751cc628f170c0f15fb215c4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+a9e7b30487235621751cc628f170c0f15fb215c4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b22045574ce65afde96b67768e980687f31efe328351ea01d67ec3e867be2884
[INFO] running `Command { std: "docker" "start" "-a" "b22045574ce65afde96b67768e980687f31efe328351ea01d67ec3e867be2884", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b22045574ce65afde96b67768e980687f31efe328351ea01d67ec3e867be2884", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b22045574ce65afde96b67768e980687f31efe328351ea01d67ec3e867be2884", kill_on_drop: false }`
[INFO] [stdout] b22045574ce65afde96b67768e980687f31efe328351ea01d67ec3e867be2884
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+a9e7b30487235621751cc628f170c0f15fb215c4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d587a573e641d1d463d8cc1849bb4e625feb8dd1d46b22693f87aa203541b0c
[INFO] running `Command { std: "docker" "start" "-a" "2d587a573e641d1d463d8cc1849bb4e625feb8dd1d46b22693f87aa203541b0c", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ptr::null`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ptr::null;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr::null`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ptr::null;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `is_palindrome_slow` is never used
[INFO] [stdout]  --> src/main.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl solution::Solution {
[INFO] [stdout]   | ----------------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn is_palindrome_slow(str: String) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `B` is never used
[INFO] [stdout]   --> src/main.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | static B: &str = "a.";
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `merge` is never used
[INFO] [stdout]  --> src/merge.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl solution::Solution {
[INFO] [stdout]   | ----------------------- associated function in this implementation
[INFO] [stdout] 6 |     pub fn merge(nums1: &mut Vec<i32>, m: i32, nums2: &mut Vec<i32>, n: i32) {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `searchMatrix` is never used
[INFO] [stdout]  --> src/search_matrix.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl solution::Solution {
[INFO] [stdout]   | ----------------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn searchMatrix(matrix: Vec<Vec<i32>>, target: i32) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `searchMatrix` should have a snake case name
[INFO] [stdout]  --> src/search_matrix.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn searchMatrix(matrix: Vec<Vec<i32>>, target: i32) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^ help: convert the identifier to snake case: `search_matrix`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `is_palindrome_slow` is never used
[INFO] [stdout]  --> src/main.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl solution::Solution {
[INFO] [stdout]   | ----------------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn is_palindrome_slow(str: String) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `B` is never used
[INFO] [stdout]   --> src/main.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | static B: &str = "a.";
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `merge` is never used
[INFO] [stdout]  --> src/merge.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl solution::Solution {
[INFO] [stdout]   | ----------------------- associated function in this implementation
[INFO] [stdout] 6 |     pub fn merge(nums1: &mut Vec<i32>, m: i32, nums2: &mut Vec<i32>, n: i32) {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `searchMatrix` is never used
[INFO] [stdout]  --> src/search_matrix.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl solution::Solution {
[INFO] [stdout]   | ----------------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn searchMatrix(matrix: Vec<Vec<i32>>, target: i32) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `searchMatrix` should have a snake case name
[INFO] [stdout]  --> src/search_matrix.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn searchMatrix(matrix: Vec<Vec<i32>>, target: i32) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^ help: convert the identifier to snake case: `search_matrix`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "2d587a573e641d1d463d8cc1849bb4e625feb8dd1d46b22693f87aa203541b0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d587a573e641d1d463d8cc1849bb4e625feb8dd1d46b22693f87aa203541b0c", kill_on_drop: false }`
[INFO] [stdout] 2d587a573e641d1d463d8cc1849bb4e625feb8dd1d46b22693f87aa203541b0c