[INFO] fetching crate voxel_worldgen 0.1.0...
[INFO] documenting voxel_worldgen-0.1.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate voxel_worldgen 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate voxel_worldgen 0.1.0 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate voxel_worldgen 0.1.0
[INFO] finished tweaking crates.io crate voxel_worldgen 0.1.0
[INFO] tweaked toml for crates.io crate voxel_worldgen 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nalgebra v0.5.1
[INFO] [stderr]   Downloaded noise v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 244eea7e0ea6a0b4a7fc9fd70727422d240d8c97bb9b21d8de0aef8feb7426a7
[INFO] running `Command { std: "docker" "start" "-a" "244eea7e0ea6a0b4a7fc9fd70727422d240d8c97bb9b21d8de0aef8feb7426a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "244eea7e0ea6a0b4a7fc9fd70727422d240d8c97bb9b21d8de0aef8feb7426a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "244eea7e0ea6a0b4a7fc9fd70727422d240d8c97bb9b21d8de0aef8feb7426a7", kill_on_drop: false }`
[INFO] [stdout] 244eea7e0ea6a0b4a7fc9fd70727422d240d8c97bb9b21d8de0aef8feb7426a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44fe8bb4a9855f3eb5b503b0b26f12b540885442d8ee72c11613978d9a676911
[INFO] running `Command { std: "docker" "start" "-a" "44fe8bb4a9855f3eb5b503b0b26f12b540885442d8ee72c11613978d9a676911", kill_on_drop: false }`
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking noise v0.2.0
[INFO] [stderr]     Checking nalgebra v0.5.1
[INFO] [stderr]  Documenting voxel_worldgen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking voxel_worldgen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Rand`
[INFO] [stdout]  --> src/generators/vanilla/mod.rs:9:20
[INFO] [stdout]   |
[INFO] [stdout] 9 | use ::rand::{ Rng, Rand };
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `chunk_data_idx`, `height_field_idx`
[INFO] [stdout]  --> src/generators/vanilla/lerp.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::util::{ chunk_data_idx, height_field_idx };
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GenUnit2`
[INFO] [stdout]  --> src/generators/vanilla/lerp.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ::gen::unit::{ GenUnit2, GenUnit3 };
[INFO] [stdout]   |                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rand`, `SeedableRng`
[INFO] [stdout]  --> src/generators/vanilla/caves.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ::rand::{ Rng, Rand, XorShiftRng, SeedableRng };
[INFO] [stdout]   |                    ^^^^               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `norm`
[INFO] [stdout]  --> src/generators/vanilla/caves.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ::nalgebra::{ cast, norm };
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Vec3`
[INFO] [stdout]  --> src/generators/vanilla/caves.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use ::nalgebra::{ Pnt2, Pnt3, Vec2, Vec3 };
[INFO] [stdout]   |                                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/generators/vanilla/caves.rs:99:24
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let range_blocks = (RANGE_CHUNKS*16 - 16);
[INFO] [stdout]    |                        ^                    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 99 -     let range_blocks = (RANGE_CHUNKS*16 - 16);
[INFO] [stdout] 99 +     let range_blocks = RANGE_CHUNKS*16 - 16;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/generators/vanilla/caves.rs:99:24
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let range_blocks = (RANGE_CHUNKS*16 - 16);
[INFO] [stdout]    |                        ^                    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 99 -     let range_blocks = (RANGE_CHUNKS*16 - 16);
[INFO] [stdout] 99 +     let range_blocks = RANGE_CHUNKS*16 - 16;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rand`
[INFO] [stdout]  --> src/rnd/simplex_octaves.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ::rand::{ Rng, Rand };
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/layer/mod.rs:27:23
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub type GenL<O> = Rc<GenLayer<O>>;
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub type GenL<O> = Rc<dyn GenLayer<O>>;
[INFO] [stdout]    |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/layer/layer_zoom.rs:28:16
[INFO] [stdout]    |
[INFO] [stdout] 28 |     source: Rc<GenLayer<I>>,
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 28 |     source: Rc<dyn GenLayer<I>>,
[INFO] [stdout]    |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/layer/layer_remove_ocean.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     source: Rc<GenLayer<bool>>,
[INFO] [stdout]   |                ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 |     source: Rc<dyn GenLayer<bool>>,
[INFO] [stdout]   |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/layer/layer_simple_fn.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 |     source: Rc<GenLayer<I>>,
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 31 |     source: Rc<dyn GenLayer<I>>,
[INFO] [stdout]    |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/layer/layer_simple_fn.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |     source1: Rc<GenLayer<I1>>,
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 60 |     source1: Rc<dyn GenLayer<I1>>,
[INFO] [stdout]    |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/layer/layer_simple_fn.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |     source2: Rc<GenLayer<I2>>,
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 61 |     source2: Rc<dyn GenLayer<I2>>,
[INFO] [stdout]    |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/layer/layer_zoom.rs:33:59
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn new(seed: i64, zoom_type: ZoomType, source: Rc<GenLayer<I>>
[INFO] [stdout]    |                                                           ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn new(seed: i64, zoom_type: ZoomType, source: Rc<dyn GenLayer<I>>
[INFO] [stdout]    |                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/layer/layer_remove_ocean.rs:13:51
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(seed: i64, factor: i32, source: Rc<GenLayer<bool>>) -> Rc<GenReduceOcean> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(seed: i64, factor: i32, source: Rc<dyn GenLayer<bool>>) -> Rc<GenReduceOcean> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/layer/layer_simple_fn.rs:34:55
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn new(fun: fn(Pnt2<i32>, I) -> O, source: Rc<GenLayer<I>>) -> Rc<GenSimpleFnTransformer<I, O>> {
[INFO] [stdout]    |                                                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn new(fun: fn(Pnt2<i32>, I) -> O, source: Rc<dyn GenLayer<I>>) -> Rc<GenSimpleFnTransformer<I, O>> {
[INFO] [stdout]    |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/layer/layer_simple_fn.rs:65:28
[INFO] [stdout]    |
[INFO] [stdout] 65 |                source1: Rc<GenLayer<I1>>, source2: Rc<GenLayer<I2>>
[INFO] [stdout]    |                            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 65 |                source1: Rc<dyn GenLayer<I1>>, source2: Rc<GenLayer<I2>>
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/layer/layer_simple_fn.rs:65:55
[INFO] [stdout]    |
[INFO] [stdout] 65 |                source1: Rc<GenLayer<I1>>, source2: Rc<GenLayer<I2>>
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 65 |                source1: Rc<GenLayer<I1>>, source2: Rc<dyn GenLayer<I2>>
[INFO] [stdout]    |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::num::Float`
[INFO] [stdout]  --> src/generators/vanilla/biomes.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/generators/vanilla/height_field.rs:50:50
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn sample_biome_range(biomes: &GenUnit2<u8>, size: Vec2<u32>, pos: Pnt2<u32>) -> (f64, f64) {
[INFO] [stdout]    |                                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]   --> src/generators/vanilla/biomes.rs:22:25
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn make_biome_index(pos: Pnt2<i32>, temp: f32, wet: f32) -> (u8, u8) {
[INFO] [stdout]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `wet`
[INFO] [stdout]   --> src/generators/vanilla/biomes.rs:33:20
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let (temp, wet) = data;
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_wet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]   --> src/generators/vanilla/biomes.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn make_biome_val(pos: Pnt2<i32>, data: (u8, u8)) -> u8 {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current_source`
[INFO] [stdout]   --> src/generators/vanilla/caves.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     for current_source in 0..source_num {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current_cave`
[INFO] [stdout]   --> src/generators/vanilla/caves.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         for current_cave in 0..num_caves {
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_cave`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `curr`
[INFO] [stdout]    --> src/generators/vanilla/caves.rs:262:22
[INFO] [stdout]     |
[INFO] [stdout] 262 | fn block_is_carvable(curr: u8, above: u8) -> bool {
[INFO] [stdout]     |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_curr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/rnd/simplex_octaves.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         for num in 0..octaves {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_pos`
[INFO] [stdout]   --> src/gen/unit.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         for x_pos in 0..size.x {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z_pos`
[INFO] [stdout]   --> src/gen/unit.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 |             for z_pos in 0..size.z {
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_z_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_pos`
[INFO] [stdout]   --> src/gen/unit.rs:54:21
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 for y_pos in 0..size.y {
[INFO] [stdout]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_y_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/generators/vanilla/biomes.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut temp_src = GenSimplex::new(1, 16.0, SimplexNoiseType::Normalized);
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/generators/vanilla/biomes.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut wet_src = GenSimplex::new(2, 16.0, SimplexNoiseType::Normalized);
[INFO] [stdout]    |         ----^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/generators/vanilla/biomes.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut biome_idx = GenSimpleFnMixer::new(make_biome_index, temp_src, wet_src);
[INFO] [stdout]    |         ----^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `fillin_noise` and `topsoil_depth_noise` are never read
[INFO] [stdout]   --> src/generators/vanilla/mod.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct WorldGeneratorState {
[INFO] [stdout]    |            ------------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fillin_noise: OctavesSeed,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     topsoil_depth_noise: OctavesSeed,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLOCK_STONE` is never used
[INFO] [stdout]   --> src/generators/vanilla/caves.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | const BLOCK_STONE: u8 = 1;
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLOCK_FLOWING_LAVA` is never used
[INFO] [stdout]   --> src/generators/vanilla/caves.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 20 | const BLOCK_FLOWING_LAVA: u8 = 10;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `octaves` is never read
[INFO] [stdout]  --> src/rnd/simplex_octaves.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct OctavesSeed {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 5 |     octaves: u32,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `RANGE_INV_Y` should have a snake case name
[INFO] [stdout]   --> src/generators/vanilla/lerp.rs:26:21
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 let RANGE_INV_Y: f64 = 1.0/(scale[1] as f64);
[INFO] [stdout]    |                     ^^^^^^^^^^^ help: convert the identifier to snake case: `range_inv_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `RANGE_INV_Z` should have a snake case name
[INFO] [stdout]   --> src/generators/vanilla/lerp.rs:65:25
[INFO] [stdout]    |
[INFO] [stdout] 65 |                     let RANGE_INV_Z: f64 = 1.0/(scale[2] as f64);
[INFO] [stdout]    |                         ^^^^^^^^^^^ help: convert the identifier to snake case: `range_inv_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `RANGE_INV_X` should have a snake case name
[INFO] [stdout]   --> src/generators/vanilla/lerp.rs:75:29
[INFO] [stdout]    |
[INFO] [stdout] 75 |                         let RANGE_INV_X: f64 = 1.0/(scale[0] as f64);
[INFO] [stdout]    |                             ^^^^^^^^^^^ help: convert the identifier to snake case: `range_inv_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 41 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/generators/vanilla/caves.rs:99:24
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let range_blocks = (RANGE_CHUNKS*16 - 16);
[INFO] [stdout]    |                        ^                    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 99 -     let range_blocks = (RANGE_CHUNKS*16 - 16);
[INFO] [stdout] 99 +     let range_blocks = RANGE_CHUNKS*16 - 16;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.76s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "44fe8bb4a9855f3eb5b503b0b26f12b540885442d8ee72c11613978d9a676911", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44fe8bb4a9855f3eb5b503b0b26f12b540885442d8ee72c11613978d9a676911", kill_on_drop: false }`
[INFO] [stdout] 44fe8bb4a9855f3eb5b503b0b26f12b540885442d8ee72c11613978d9a676911
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "rustdoc" "--lib" "-Zrustdoc-map" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3db207143f79c7f1b1f1d0ed440ba730db613a1b8a007aff8d78ad2a068550e5
[INFO] running `Command { std: "docker" "start" "-a" "3db207143f79c7f1b1f1d0ed440ba730db613a1b8a007aff8d78ad2a068550e5", kill_on_drop: false }`
[INFO] [stderr]  Documenting voxel_worldgen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/generators/vanilla/caves.rs:99:24
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let range_blocks = (RANGE_CHUNKS*16 - 16);
[INFO] [stdout]    |                        ^                    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 99 -     let range_blocks = (RANGE_CHUNKS*16 - 16);
[INFO] [stdout] 99 +     let range_blocks = RANGE_CHUNKS*16 - 16;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "3db207143f79c7f1b1f1d0ed440ba730db613a1b8a007aff8d78ad2a068550e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3db207143f79c7f1b1f1d0ed440ba730db613a1b8a007aff8d78ad2a068550e5", kill_on_drop: false }`
[INFO] [stdout] 3db207143f79c7f1b1f1d0ed440ba730db613a1b8a007aff8d78ad2a068550e5
