[INFO] cloning repository https://github.com/LLGames/WordSearchGenerator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LLGames/WordSearchGenerator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLLGames%2FWordSearchGenerator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLLGames%2FWordSearchGenerator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ef8325070144e85ff1cef12701bd8f15689d884b
[INFO] checking LLGames/WordSearchGenerator against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLLGames%2FWordSearchGenerator" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LLGames/WordSearchGenerator on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LLGames/WordSearchGenerator
[INFO] finished tweaking git repo https://github.com/LLGames/WordSearchGenerator
[INFO] tweaked toml for git repo https://github.com/LLGames/WordSearchGenerator written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/LLGames/WordSearchGenerator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.113
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1cbc1b849d4ad001aa4b6a4fe0dcebf9ce16a32d1ede32bd3e1a6436e2b1f7f5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1cbc1b849d4ad001aa4b6a4fe0dcebf9ce16a32d1ede32bd3e1a6436e2b1f7f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cbc1b849d4ad001aa4b6a4fe0dcebf9ce16a32d1ede32bd3e1a6436e2b1f7f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cbc1b849d4ad001aa4b6a4fe0dcebf9ce16a32d1ede32bd3e1a6436e2b1f7f5", kill_on_drop: false }`
[INFO] [stdout] 1cbc1b849d4ad001aa4b6a4fe0dcebf9ce16a32d1ede32bd3e1a6436e2b1f7f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 00a80649345595eec5d9f4768e9fef7827a8ae15d97081b83133c5442e6b1fb0
[INFO] running `Command { std: "docker" "start" "-a" "00a80649345595eec5d9f4768e9fef7827a8ae15d97081b83133c5442e6b1fb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.64
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling bumpalo v3.4.0
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling wasm-bindgen v0.2.64
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling serde_derive v1.0.113
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.14
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.64
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.64
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.64
[INFO] [stderr]     Checking js-sys v0.3.41
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.14
[INFO] [stderr]     Checking wordsearch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::stdin`
[INFO] [stdout]  --> src/ui.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::stdin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.14
[INFO] [stdout] warning: function is never used: `new_board`
[INFO] [stdout]  --> src/wasm.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn new_board(size: u32) -> JsValue {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `init_gen`
[INFO] [stdout]   --> src/wasm.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn init_gen(words_json: js_sys::Array) -> JsValue {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fill_slots`
[INFO] [stdout]   --> src/wasm.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn fill_slots(board: &JsValue, n_words: u32, gen: &JsValue) -> JsValue {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]   --> src/wasm.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn run(words_json: js_sys::Array, size: u32, n_words: u32) -> JsValue {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/generator/mod.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn new(words: Vec<String>) -> DefaultGenerator {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> src/model/mod.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     value: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/model/mod.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn new(size: usize) -> Board {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_word`
[INFO] [stdout]   --> src/model/mod.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn insert_word(self: &mut Self, word: &Word) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `fill_blank_slots`
[INFO] [stdout]   --> src/model/mod.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn fill_blank_slots(&mut self, generator: &impl CharGenerator) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `place_words`
[INFO] [stdout]  --> src/ui.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn place_words(board: &mut Board, n_words: usize, gen: &DefaultGenerator) {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generate_word`
[INFO] [stdout]   --> src/ui.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn generate_word(gen: &mut impl WordGenerator, board: &Board) -> Word {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `init_generator`
[INFO] [stdout]   --> src/ui.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn init_generator(words: &Vec<String>) -> DefaultGenerator {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::stdin`
[INFO] [stdout]  --> src/ui.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::stdin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_board`
[INFO] [stdout]  --> src/wasm.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn new_board(size: u32) -> JsValue {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `init_gen`
[INFO] [stdout]   --> src/wasm.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn init_gen(words_json: js_sys::Array) -> JsValue {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fill_slots`
[INFO] [stdout]   --> src/wasm.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn fill_slots(board: &JsValue, n_words: u32, gen: &JsValue) -> JsValue {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]   --> src/wasm.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn run(words_json: js_sys::Array, size: u32, n_words: u32) -> JsValue {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/generator/mod.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn new(words: Vec<String>) -> DefaultGenerator {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> src/model/mod.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     value: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/model/mod.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn new(size: usize) -> Board {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_word`
[INFO] [stdout]   --> src/model/mod.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn insert_word(self: &mut Self, word: &Word) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `fill_blank_slots`
[INFO] [stdout]   --> src/model/mod.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn fill_blank_slots(&mut self, generator: &impl CharGenerator) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `place_words`
[INFO] [stdout]  --> src/ui.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn place_words(board: &mut Board, n_words: usize, gen: &DefaultGenerator) {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generate_word`
[INFO] [stdout]   --> src/ui.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn generate_word(gen: &mut impl WordGenerator, board: &Board) -> Word {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `init_generator`
[INFO] [stdout]   --> src/ui.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn init_generator(words: &Vec<String>) -> DefaultGenerator {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.12s
[INFO] running `Command { std: "docker" "inspect" "00a80649345595eec5d9f4768e9fef7827a8ae15d97081b83133c5442e6b1fb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00a80649345595eec5d9f4768e9fef7827a8ae15d97081b83133c5442e6b1fb0", kill_on_drop: false }`
[INFO] [stdout] 00a80649345595eec5d9f4768e9fef7827a8ae15d97081b83133c5442e6b1fb0