[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/ef8325070144e85ff1cef12701bd8f15689d884b against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLLGames%2FWordSearchGenerator" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LLGames/WordSearchGenerator on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-1-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18f5c9253251bc0c64b9e980dbd9666ceff23b75a2a599855ab4a41b3eca010d
[INFO] running `Command { std: "docker" "start" "-a" "18f5c9253251bc0c64b9e980dbd9666ceff23b75a2a599855ab4a41b3eca010d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18f5c9253251bc0c64b9e980dbd9666ceff23b75a2a599855ab4a41b3eca010d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18f5c9253251bc0c64b9e980dbd9666ceff23b75a2a599855ab4a41b3eca010d", kill_on_drop: false }`
[INFO] [stdout] 18f5c9253251bc0c64b9e980dbd9666ceff23b75a2a599855ab4a41b3eca010d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 825d3bdddb030d400a152395934ad993aa351b30c27b016f362a0de14e8aee53
[INFO] running `Command { std: "docker" "start" "-a" "825d3bdddb030d400a152395934ad993aa351b30c27b016f362a0de14e8aee53", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.64
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling bumpalo v3.4.0
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]    Compiling wasm-bindgen v0.2.64
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling serde_derive v1.0.113
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.14
[INFO] [stderr]     Checking rand_chacha v0.2.2
[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: `positioner::Positioner`
[INFO] [stdout]  --> src/model/mod.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use positioner::Positioner;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[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] 
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.14
[INFO] [stdout] warning: function `new_board` is never used
[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 `init_gen` is never used
[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 `fill_slots` is never used
[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 `run` is never used
[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 items `draw_orientation` and `draw_word` are never used
[INFO] [stdout]   --> src/generator/mod.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait WordGenerator {
[INFO] [stdout]    |           ------------- associated items in this trait
[INFO] [stdout] 12 |     fn draw_orientation() -> Orientation;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 13 |     fn draw_word(&mut self) -> String;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `take_random_char` is never used
[INFO] [stdout]   --> src/generator/mod.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub trait CharGenerator {
[INFO] [stdout]    |           ------------- method in this trait
[INFO] [stdout] 17 |     fn take_random_char(&self) -> char;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/generator/mod.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl DefaultGenerator {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 46 |     pub fn new(words: Vec<String>) -> DefaultGenerator {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value`, `start_pos`, and `orientation` are never read
[INFO] [stdout]   --> src/model/mod.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct Word {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 21 |     value: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 22 |     pub start_pos: (usize, usize),
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 23 |     pub orientation: Orientation,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert_word`, and `fill_blank_slots` are never used
[INFO] [stdout]   --> src/model/mod.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl Board {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn new(size: usize) -> Board {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn insert_word(self: &mut Self, word: &Word) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn fill_blank_slots(&mut self, generator: &impl CharGenerator) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `create_word` is never used
[INFO] [stdout]  --> src/model/word_factory.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait WordFactory {
[INFO] [stdout]   |           ----------- method in this trait
[INFO] [stdout] 5 |     fn create_word(self: &Self, word: String, orient: Orientation) -> Word;
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `place_words` is never used
[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 `generate_word` is never used
[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 `init_generator` is never used
[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] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/wasm.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn init_gen(words_json: js_sys::Array) -> JsValue {
[INFO] [stdout]    |                 ------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 14 |     let words: Vec<String> = JsValue::into_serde(&JsValue::from(words_json)).unwrap();
[INFO] [stdout] 15 |     JsValue::from_serde(&init_generator(&words)).unwrap()
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wordsearch` (lib) due to 2 previous errors; 15 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "825d3bdddb030d400a152395934ad993aa351b30c27b016f362a0de14e8aee53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "825d3bdddb030d400a152395934ad993aa351b30c27b016f362a0de14e8aee53", kill_on_drop: false }`
[INFO] [stdout] 825d3bdddb030d400a152395934ad993aa351b30c27b016f362a0de14e8aee53