[INFO] cloning repository https://github.com/xfix/smw-mwl-file-joiner
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xfix/smw-mwl-file-joiner" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxfix%2Fsmw-mwl-file-joiner", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxfix%2Fsmw-mwl-file-joiner'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c7e85080723d70952c7cf2182e6946e38708b8af
[INFO] checking xfix/smw-mwl-file-joiner against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxfix%2Fsmw-mwl-file-joiner" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xfix/smw-mwl-file-joiner on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xfix/smw-mwl-file-joiner
[INFO] finished tweaking git repo https://github.com/xfix/smw-mwl-file-joiner
[INFO] tweaked toml for git repo https://github.com/xfix/smw-mwl-file-joiner written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/xfix/smw-mwl-file-joiner 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded backtrace v0.3.4
[INFO] [stderr]   Downloaded cc v1.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 964c472ec33d4d70bb2bd24a9dd5972cca939945785b3215ea1df54aa4661a48
[INFO] running `Command { std: "docker" "start" "-a" "964c472ec33d4d70bb2bd24a9dd5972cca939945785b3215ea1df54aa4661a48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "964c472ec33d4d70bb2bd24a9dd5972cca939945785b3215ea1df54aa4661a48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "964c472ec33d4d70bb2bd24a9dd5972cca939945785b3215ea1df54aa4661a48", kill_on_drop: false }`
[INFO] [stdout] 964c472ec33d4d70bb2bd24a9dd5972cca939945785b3215ea1df54aa4661a48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 530fe3b9526d3be8e23b17ff387037003ac63d72254b1cff573229ac4a6aa369
[INFO] running `Command { std: "docker" "start" "-a" "530fe3b9526d3be8e23b17ff387037003ac63d72254b1cff573229ac4a6aa369", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking rustc-demangle v0.1.5
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking backtrace v0.3.4
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking smw-mwl-file-joiner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rectangle`
[INFO] [stdout]  --> src/entry.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use map16::{Rectangle, Tile};
[INFO] [stdout]   |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rectangle`
[INFO] [stdout]  --> src/entry.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use map16::{Rectangle, Tile};
[INFO] [stdout]   |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ByteOrder` and `LE`
[INFO] [stdout]  --> src/entry.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use byteorder::{ByteOrder, LE};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ByteOrder` and `LE`
[INFO] [stdout]  --> src/entry.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use byteorder::{ByteOrder, LE};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `failure::Error`
[INFO] [stdout]  --> src/entry.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use failure::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `failure::Error`
[INFO] [stdout]  --> src/entry.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use failure::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/entry.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/entry.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `failure::Error`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use failure::Error;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `failure::Error`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use failure::Error;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dir_entry`
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     for dir_entry in fs::read_dir("../entries").unwrap() {
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dir_entry`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entry`
[INFO] [stdout]   --> src/main.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let entry = Entry::new(&mut database);
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `cache` and `current_number` are never read
[INFO] [stdout]  --> src/cache.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Cache<T> {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 5 |     cache: HashMap<T, u16>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     current_number: u16,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_number` is never used
[INFO] [stdout]   --> src/cache.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<T: Hash + Eq> Cache<T> {
[INFO] [stdout]    | --------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn get_number(&mut self, elem: T) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `fg`, `bg`, `exgfx`, `current_secondary`, `current_regular`, and `current_sublevel` are never read
[INFO] [stdout]   --> src/db.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub struct Database {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 5  |     fg: Optimizer,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 6  |     bg: Optimizer,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 7  |     exgfx: Cache<Vec<u8>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 8  |     current_secondary: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 9  |     current_regular: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 10 |     current_sublevel: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `exgfx_number`, `tile_number`, `tile_number_for_rectangle`, `next_regular`, and `next_sublevel` are never used
[INFO] [stdout]   --> src/db.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Database {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn exgfx_number(&mut self, exgfx: Vec<u8>) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn tile_number(&mut self, tile: Tile) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn tile_number_for_rectangle(&mut self, rectangle: Rectangle) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn next_regular(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn next_sublevel(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `db`, `exgfx`, and `tiles` are never read
[INFO] [stdout]   --> src/entry.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Entry<'a> {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 10 |     db: &'a mut Database,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 11 |     exgfx: HashMap<u16, u16>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 12 |     tiles: HashMap<u16, Tile>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Level` is never constructed
[INFO] [stdout]  --> src/level.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Level<'a> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read_block`, and `read_level_number` are never used
[INFO] [stdout]   --> src/level.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl<'a> Level<'a> {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 8  |     pub fn new(bytes: &[u8]) -> Level {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn read_block(&self, position: usize) -> &[u8] {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn read_level_number(&self) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `next`, `tiles`, `rectangles`, and `big_tiles` are never read
[INFO] [stdout]  --> src/map16.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Optimizer {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 4 |     next: u16,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     tiles: HashMap<Tile, u16>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     rectangles: HashMap<Rectangle, u16>,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 7 |     big_tiles: HashSet<u16>,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `assign_tile`, `assign_rectangle`, and `is_rectangle_allowed` are never used
[INFO] [stdout]   --> src/map16.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Optimizer {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn assign_tile(&mut self, tile: Tile) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn assign_rectangle(&mut self, rectangle: Rectangle) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn is_rectangle_allowed(&self, rectangle: &Rectangle, next: u16) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/map16.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 82 | impl Tile {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 83 |     pub fn new(tile: [u8; 8], behaviour: u16) -> Tile {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `height` are never used
[INFO] [stdout]   --> src/map16.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 94 | impl Rectangle {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 95 |     pub fn new(tiles: Vec<Tile>, width: u8) -> Rectangle {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |     fn height(&self) -> u8 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dir_entry`
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     for dir_entry in fs::read_dir("../entries").unwrap() {
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dir_entry`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entry`
[INFO] [stdout]   --> src/main.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let entry = Entry::new(&mut database);
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `cache` and `current_number` are never read
[INFO] [stdout]  --> src/cache.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Cache<T> {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 5 |     cache: HashMap<T, u16>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     current_number: u16,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_number` is never used
[INFO] [stdout]   --> src/cache.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<T: Hash + Eq> Cache<T> {
[INFO] [stdout]    | --------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn get_number(&mut self, elem: T) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `fg`, `bg`, `exgfx`, `current_secondary`, `current_regular`, and `current_sublevel` are never read
[INFO] [stdout]   --> src/db.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub struct Database {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 5  |     fg: Optimizer,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 6  |     bg: Optimizer,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 7  |     exgfx: Cache<Vec<u8>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 8  |     current_secondary: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 9  |     current_regular: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 10 |     current_sublevel: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `exgfx_number`, `tile_number`, `tile_number_for_rectangle`, `next_regular`, and `next_sublevel` are never used
[INFO] [stdout]   --> src/db.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Database {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn exgfx_number(&mut self, exgfx: Vec<u8>) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn tile_number(&mut self, tile: Tile) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn tile_number_for_rectangle(&mut self, rectangle: Rectangle) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn next_regular(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn next_sublevel(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `db`, `exgfx`, and `tiles` are never read
[INFO] [stdout]   --> src/entry.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Entry<'a> {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 10 |     db: &'a mut Database,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 11 |     exgfx: HashMap<u16, u16>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 12 |     tiles: HashMap<u16, Tile>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Level` is never constructed
[INFO] [stdout]  --> src/level.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Level<'a> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read_block`, and `read_level_number` are never used
[INFO] [stdout]   --> src/level.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl<'a> Level<'a> {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 8  |     pub fn new(bytes: &[u8]) -> Level {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn read_block(&self, position: usize) -> &[u8] {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn read_level_number(&self) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.33s
[INFO] running `Command { std: "docker" "inspect" "530fe3b9526d3be8e23b17ff387037003ac63d72254b1cff573229ac4a6aa369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "530fe3b9526d3be8e23b17ff387037003ac63d72254b1cff573229ac4a6aa369", kill_on_drop: false }`
[INFO] [stdout] 530fe3b9526d3be8e23b17ff387037003ac63d72254b1cff573229ac4a6aa369
[INFO] checking xfix/smw-mwl-file-joiner against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxfix%2Fsmw-mwl-file-joiner" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xfix/smw-mwl-file-joiner on toolchain f9935d29d867449445ee008640ccca1bf1ae0889
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xfix/smw-mwl-file-joiner
[INFO] finished tweaking git repo https://github.com/xfix/smw-mwl-file-joiner
[INFO] tweaked toml for git repo https://github.com/xfix/smw-mwl-file-joiner written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/xfix/smw-mwl-file-joiner 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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce20f0bed101aaa7ee54e161694fac9937824cc853cddfd8b92981d0a2c93631
[INFO] running `Command { std: "docker" "start" "-a" "ce20f0bed101aaa7ee54e161694fac9937824cc853cddfd8b92981d0a2c93631", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce20f0bed101aaa7ee54e161694fac9937824cc853cddfd8b92981d0a2c93631", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce20f0bed101aaa7ee54e161694fac9937824cc853cddfd8b92981d0a2c93631", kill_on_drop: false }`
[INFO] [stdout] ce20f0bed101aaa7ee54e161694fac9937824cc853cddfd8b92981d0a2c93631
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be9567e13eab8c9f616855f21d3c4a4403f16606cfe20147f3f5fad08a86b7de
[INFO] running `Command { std: "docker" "start" "-a" "be9567e13eab8c9f616855f21d3c4a4403f16606cfe20147f3f5fad08a86b7de", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking rustc-demangle v0.1.5
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking backtrace v0.3.4
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking smw-mwl-file-joiner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rectangle`
[INFO] [stdout]  --> src/entry.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use map16::{Rectangle, Tile};
[INFO] [stdout]   |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ByteOrder` and `LE`
[INFO] [stdout]  --> src/entry.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use byteorder::{ByteOrder, LE};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `failure::Error`
[INFO] [stdout]  --> src/entry.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use failure::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/entry.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `failure::Error`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use failure::Error;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rectangle`
[INFO] [stdout]  --> src/entry.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use map16::{Rectangle, Tile};
[INFO] [stdout]   |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ByteOrder` and `LE`
[INFO] [stdout]  --> src/entry.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use byteorder::{ByteOrder, LE};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `failure::Error`
[INFO] [stdout]  --> src/entry.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use failure::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/entry.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `failure::Error`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use failure::Error;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dir_entry`
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     for dir_entry in fs::read_dir("../entries").unwrap() {
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dir_entry`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entry`
[INFO] [stdout]   --> src/main.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let entry = Entry::new(&mut database);
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `cache` and `current_number` are never read
[INFO] [stdout]  --> src/cache.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Cache<T> {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 5 |     cache: HashMap<T, u16>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     current_number: u16,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_number` is never used
[INFO] [stdout]   --> src/cache.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<T: Hash + Eq> Cache<T> {
[INFO] [stdout]    | --------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn get_number(&mut self, elem: T) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `fg`, `bg`, `exgfx`, `current_secondary`, `current_regular`, and `current_sublevel` are never read
[INFO] [stdout]   --> src/db.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub struct Database {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 5  |     fg: Optimizer,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 6  |     bg: Optimizer,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 7  |     exgfx: Cache<Vec<u8>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 8  |     current_secondary: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 9  |     current_regular: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 10 |     current_sublevel: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `exgfx_number`, `tile_number`, `tile_number_for_rectangle`, `next_regular`, and `next_sublevel` are never used
[INFO] [stdout]   --> src/db.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Database {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn exgfx_number(&mut self, exgfx: Vec<u8>) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn tile_number(&mut self, tile: Tile) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn tile_number_for_rectangle(&mut self, rectangle: Rectangle) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn next_regular(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn next_sublevel(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `db`, `exgfx`, and `tiles` are never read
[INFO] [stdout]   --> src/entry.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Entry<'a> {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 10 |     db: &'a mut Database,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 11 |     exgfx: HashMap<u16, u16>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 12 |     tiles: HashMap<u16, Tile>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Level` is never constructed
[INFO] [stdout]  --> src/level.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Level<'a> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read_block`, and `read_level_number` are never used
[INFO] [stdout]   --> src/level.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl<'a> Level<'a> {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 8  |     pub fn new(bytes: &[u8]) -> Level {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn read_block(&self, position: usize) -> &[u8] {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn read_level_number(&self) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `next`, `tiles`, `rectangles`, and `big_tiles` are never read
[INFO] [stdout]  --> src/map16.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Optimizer {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 4 |     next: u16,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     tiles: HashMap<Tile, u16>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     rectangles: HashMap<Rectangle, u16>,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 7 |     big_tiles: HashSet<u16>,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `assign_tile`, `assign_rectangle`, and `is_rectangle_allowed` are never used
[INFO] [stdout]   --> src/map16.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Optimizer {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn assign_tile(&mut self, tile: Tile) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn assign_rectangle(&mut self, rectangle: Rectangle) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn is_rectangle_allowed(&self, rectangle: &Rectangle, next: u16) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/map16.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 82 | impl Tile {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 83 |     pub fn new(tile: [u8; 8], behaviour: u16) -> Tile {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `height` are never used
[INFO] [stdout]   --> src/map16.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 94 | impl Rectangle {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 95 |     pub fn new(tiles: Vec<Tile>, width: u8) -> Rectangle {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |     fn height(&self) -> u8 {
[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/cache.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn get_number(&mut self, elem: T) -> u16 {
[INFO] [stdout]    |                                  ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 18 |         let current_number = &mut self.current_number;
[INFO] [stdout] 19 |         *self.cache.entry(elem).or_insert_with(|| {
[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] warning: unused variable: `dir_entry`
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     for dir_entry in fs::read_dir("../entries").unwrap() {
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dir_entry`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entry`
[INFO] [stdout]   --> src/main.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let entry = Entry::new(&mut database);
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `cache` and `current_number` are never read
[INFO] [stdout]  --> src/cache.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Cache<T> {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 5 |     cache: HashMap<T, u16>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     current_number: u16,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_number` is never used
[INFO] [stdout]   --> src/cache.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<T: Hash + Eq> Cache<T> {
[INFO] [stdout]    | --------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn get_number(&mut self, elem: T) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `fg`, `bg`, `exgfx`, `current_secondary`, `current_regular`, and `current_sublevel` are never read
[INFO] [stdout]   --> src/db.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub struct Database {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 5  |     fg: Optimizer,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 6  |     bg: Optimizer,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 7  |     exgfx: Cache<Vec<u8>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 8  |     current_secondary: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 9  |     current_regular: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 10 |     current_sublevel: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `exgfx_number`, `tile_number`, `tile_number_for_rectangle`, `next_regular`, and `next_sublevel` are never used
[INFO] [stdout]   --> src/db.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Database {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn exgfx_number(&mut self, exgfx: Vec<u8>) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn tile_number(&mut self, tile: Tile) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn tile_number_for_rectangle(&mut self, rectangle: Rectangle) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn next_regular(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn next_sublevel(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `db`, `exgfx`, and `tiles` are never read
[INFO] [stdout]   --> src/entry.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Entry<'a> {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 10 |     db: &'a mut Database,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 11 |     exgfx: HashMap<u16, u16>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 12 |     tiles: HashMap<u16, Tile>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Level` is never constructed
[INFO] [stdout]  --> src/level.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Level<'a> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read_block`, and `read_level_number` are never used
[INFO] [stdout]   --> src/level.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl<'a> Level<'a> {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 8  |     pub fn new(bytes: &[u8]) -> Level {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn read_block(&self, position: usize) -> &[u8] {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn read_level_number(&self) -> u16 {
[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/cache.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn get_number(&mut self, elem: T) -> u16 {
[INFO] [stdout]    |                                  ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 18 |         let current_number = &mut self.current_number;
[INFO] [stdout] 19 |         *self.cache.entry(elem).or_insert_with(|| {
[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 `smw-mwl-file-joiner` (bin "smw-mwl-file-joiner") due to 2 previous errors; 19 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `smw-mwl-file-joiner` (bin "smw-mwl-file-joiner" test) due to 2 previous errors; 15 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "be9567e13eab8c9f616855f21d3c4a4403f16606cfe20147f3f5fad08a86b7de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be9567e13eab8c9f616855f21d3c4a4403f16606cfe20147f3f5fad08a86b7de", kill_on_drop: false }`
[INFO] [stdout] be9567e13eab8c9f616855f21d3c4a4403f16606cfe20147f3f5fad08a86b7de