[INFO] cloning repository https://github.com/huongnguyen1602/rust_exercism
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/huongnguyen1602/rust_exercism" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuongnguyen1602%2Frust_exercism", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuongnguyen1602%2Frust_exercism'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eca3f3576382165601ae45edfc5eecb155a64c8e
[INFO] checking huongnguyen1602/rust_exercism against master#2e6fc425411280c658d852813de01c5157255088 for pr-128013
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuongnguyen1602%2Frust_exercism" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/huongnguyen1602/rust_exercism on toolchain 2e6fc425411280c658d852813de01c5157255088
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2e6fc425411280c658d852813de01c5157255088" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/huongnguyen1602/rust_exercism
[INFO] finished tweaking git repo https://github.com/huongnguyen1602/rust_exercism
[INFO] tweaked toml for git repo https://github.com/huongnguyen1602/rust_exercism written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/huongnguyen1602/rust_exercism 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" "+2e6fc425411280c658d852813de01c5157255088" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+2e6fc425411280c658d852813de01c5157255088" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15f12b294e19faaf09bb324666cb8494530cc52c80bfbb23986024242a9d6f31
[INFO] running `Command { std: "docker" "start" "-a" "15f12b294e19faaf09bb324666cb8494530cc52c80bfbb23986024242a9d6f31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15f12b294e19faaf09bb324666cb8494530cc52c80bfbb23986024242a9d6f31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15f12b294e19faaf09bb324666cb8494530cc52c80bfbb23986024242a9d6f31", kill_on_drop: false }`
[INFO] [stdout] 15f12b294e19faaf09bb324666cb8494530cc52c80bfbb23986024242a9d6f31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+2e6fc425411280c658d852813de01c5157255088" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eaf21f3a85b40a11a1a2d6881ac6aefe82eb9c98d3a3a40dbd6f55811c9e23a7
[INFO] running `Command { std: "docker" "start" "-a" "eaf21f3a85b40a11a1a2d6881ac6aefe82eb9c98d3a3a40dbd6f55811c9e23a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]     Checking time-core v0.1.1
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]     Checking time v0.3.23
[INFO] [stderr]     Checking rust_exercism v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x_size`
[INFO] [stdout]   --> src/main.rs:51:53
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn handle_indices(x_index: &usize, y_index: &usize, x_size: &usize, y_size: &usize) -> Vec<(usize, usize)>{
[INFO] [stdout]    |                                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_size`
[INFO] [stdout]   --> src/main.rs:51:69
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn handle_indices(x_index: &usize, y_index: &usize, x_size: &usize, y_size: &usize) -> Vec<(usize, usize)>{
[INFO] [stdout]    |                                                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_size`
[INFO] [stdout]   --> src/main.rs:51:53
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn handle_indices(x_index: &usize, y_index: &usize, x_size: &usize, y_size: &usize) -> Vec<(usize, usize)>{
[INFO] [stdout]    |                                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_size`
[INFO] [stdout]   --> src/main.rs:51:69
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn handle_indices(x_index: &usize, y_index: &usize, x_size: &usize, y_size: &usize) -> Vec<(usize, usize)>{
[INFO] [stdout]    |                                                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `annotate` is never used
[INFO] [stdout]   --> src/main.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn annotate(minefield: &[&str]) -> Vec<String>{
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_all_rows` is never used
[INFO] [stdout]   --> src/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn handle_all_rows(rows: &[&str]) -> Vec<String>{
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_row` is never used
[INFO] [stdout]   --> src/main.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn handle_row(row: &str, index: &usize, minefield: &[&str]) -> String{
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_surroundings` is never used
[INFO] [stdout]   --> src/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn count_surroundings(mine_field: &[&str], x_index: &usize, y_index: &usize, chr: &char) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_indices` is never used
[INFO] [stdout]   --> src/main.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn handle_indices(x_index: &usize, y_index: &usize, x_size: &usize, y_size: &usize) -> Vec<(usize, usize)>{
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `annotate` is never used
[INFO] [stdout]   --> src/main.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn annotate(minefield: &[&str]) -> Vec<String>{
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_all_rows` is never used
[INFO] [stdout]   --> src/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn handle_all_rows(rows: &[&str]) -> Vec<String>{
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_row` is never used
[INFO] [stdout]   --> src/main.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn handle_row(row: &str, index: &usize, minefield: &[&str]) -> String{
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_surroundings` is never used
[INFO] [stdout]   --> src/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn count_surroundings(mine_field: &[&str], x_index: &usize, y_index: &usize, chr: &char) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_indices` is never used
[INFO] [stdout]   --> src/main.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn handle_indices(x_index: &usize, y_index: &usize, x_size: &usize, y_size: &usize) -> Vec<(usize, usize)>{
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "eaf21f3a85b40a11a1a2d6881ac6aefe82eb9c98d3a3a40dbd6f55811c9e23a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eaf21f3a85b40a11a1a2d6881ac6aefe82eb9c98d3a3a40dbd6f55811c9e23a7", kill_on_drop: false }`
[INFO] [stdout] eaf21f3a85b40a11a1a2d6881ac6aefe82eb9c98d3a3a40dbd6f55811c9e23a7