[INFO] fetching crate pixtra 0.2.6...
[INFO] checking pixtra-0.2.6 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate pixtra 0.2.6 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate pixtra 0.2.6
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate pixtra 0.2.6
[INFO] tweaked toml for crates.io crate pixtra 0.2.6 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pixtra 0.2.6 on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pixtra 0.2.6 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" "+a5689b034ad287112f709693384a37f1377eb9cc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d4459a8a94dafb3be5a17e83cbabe5288f7576081764c35bffe81229ca031323
[INFO] running `Command { std: "docker" "start" "d4459a8a94dafb3be5a17e83cbabe5288f7576081764c35bffe81229ca031323", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4459a8a94dafb3be5a17e83cbabe5288f7576081764c35bffe81229ca031323", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d4459a8a94dafb3be5a17e83cbabe5288f7576081764c35bffe81229ca031323" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4459a8a94dafb3be5a17e83cbabe5288f7576081764c35bffe81229ca031323", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d4459a8a94dafb3be5a17e83cbabe5288f7576081764c35bffe81229ca031323" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.46
[INFO] [stderr]     Checking memchr v2.8.2
[INFO] [stderr]    Compiling anyhow v1.0.103
[INFO] [stderr]     Checking either v1.16.0
[INFO] [stderr]    Compiling zerocopy v0.8.53
[INFO] [stderr]     Checking log v0.4.33
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking zune-inflate v0.2.54
[INFO] [stderr]     Checking bitflags v2.13.0
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[INFO] [stderr]     Checking png v0.18.1
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[INFO] [stderr]    Compiling simd_helpers v0.1.0
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[INFO] [stderr]     Checking no_std_io2 v0.9.4
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[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking maybe-rayon v0.1.1
[INFO] [stderr]    Compiling equator-macro v0.4.2
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling zerocopy-derive v0.8.53
[INFO] [stderr]    Compiling profiling-procmacros v1.0.18
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]     Checking profiling v1.0.18
[INFO] [stderr]     Checking equator v0.4.2
[INFO] [stderr]     Checking aligned-vec v0.6.4
[INFO] [stderr]     Checking v_frame v0.3.9
[INFO] [stderr]     Checking thiserror v2.0.18
[INFO] [stderr]     Checking av1-grain v0.2.5
[INFO] [stderr]     Checking av-scenechange v0.14.1
[INFO] [stderr]     Checking rav1e v0.8.1
[INFO] [stderr]     Checking half v2.7.1
[INFO] [stderr]     Checking ravif v0.13.0
[INFO] [stderr]     Checking exr v1.74.0
[INFO] [stderr]     Checking tiff v0.11.3
[INFO] [stderr]     Checking image v0.25.10
[INFO] [stderr]     Checking pixtra v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Sub`
[INFO] [stdout]  --> src/pixels.rs:4:31
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::{Add, Div, Mul, Sub};
[INFO] [stdout]   |                               ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sub`
[INFO] [stdout]  --> src/pixels.rs:4:31
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::{Add, Div, Mul, Sub};
[INFO] [stdout]   |                               ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:223:32
[INFO] [stdout]     |
[INFO] [stdout] 223 |             r: clamp(0f32, u8::max_value() as f32, red as f32) as u8,
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:224:32
[INFO] [stdout]     |
[INFO] [stdout] 224 |             g: clamp(0f32, u8::max_value() as f32, green as f32) as u8,
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:225:32
[INFO] [stdout]     |
[INFO] [stdout] 225 |             b: clamp(0f32, u8::max_value() as f32, blue as f32) as u8,
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:226:32
[INFO] [stdout]     |
[INFO] [stdout] 226 |             a: clamp(0f32, u8::max_value() as f32, alpha as f32) as u8,
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:232:23
[INFO] [stdout]     |
[INFO] [stdout] 232 |             red * u8::max_value() as f32,
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:233:25
[INFO] [stdout]     |
[INFO] [stdout] 233 |             green * u8::max_value() as f32,
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:234:24
[INFO] [stdout]     |
[INFO] [stdout] 234 |             blue * u8::max_value() as f32,
[INFO] [stdout]     |                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:235:25
[INFO] [stdout]     |
[INFO] [stdout] 235 |             alpha * u8::max_value() as f32,
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:260:32
[INFO] [stdout]     |
[INFO] [stdout] 260 |             r: clamp(0f32, u8::max_value() as f32, self.r as f32 * x) as u8,
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:261:32
[INFO] [stdout]     |
[INFO] [stdout] 261 |             g: clamp(0f32, u8::max_value() as f32, self.g as f32 * y) as u8,
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:262:32
[INFO] [stdout]     |
[INFO] [stdout] 262 |             b: clamp(0f32, u8::max_value() as f32, self.b as f32 * z) as u8,
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:223:32
[INFO] [stdout]     |
[INFO] [stdout] 223 |             r: clamp(0f32, u8::max_value() as f32, red as f32) as u8,
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:224:32
[INFO] [stdout]     |
[INFO] [stdout] 224 |             g: clamp(0f32, u8::max_value() as f32, green as f32) as u8,
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:225:32
[INFO] [stdout]     |
[INFO] [stdout] 225 |             b: clamp(0f32, u8::max_value() as f32, blue as f32) as u8,
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:226:32
[INFO] [stdout]     |
[INFO] [stdout] 226 |             a: clamp(0f32, u8::max_value() as f32, alpha as f32) as u8,
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:232:23
[INFO] [stdout]     |
[INFO] [stdout] 232 |             red * u8::max_value() as f32,
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:233:25
[INFO] [stdout]     |
[INFO] [stdout] 233 |             green * u8::max_value() as f32,
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:234:24
[INFO] [stdout]     |
[INFO] [stdout] 234 |             blue * u8::max_value() as f32,
[INFO] [stdout]     |                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:235:25
[INFO] [stdout]     |
[INFO] [stdout] 235 |             alpha * u8::max_value() as f32,
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:260:32
[INFO] [stdout]     |
[INFO] [stdout] 260 |             r: clamp(0f32, u8::max_value() as f32, self.r as f32 * x) as u8,
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:261:32
[INFO] [stdout]     |
[INFO] [stdout] 261 |             g: clamp(0f32, u8::max_value() as f32, self.g as f32 * y) as u8,
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u8>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/pixels.rs:262:32
[INFO] [stdout]     |
[INFO] [stdout] 262 |             b: clamp(0f32, u8::max_value() as f32, self.b as f32 * z) as u8,
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]    --> src/utility.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 | pub fn diff(c1: &Canvas, c2: &Canvas) -> Canvas {
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]    --> src/utility.rs:113:26
[INFO] [stdout]     |
[INFO] [stdout] 113 | pub fn diff(c1: &Canvas, c2: &Canvas) -> Canvas {
[INFO] [stdout]     |                          ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `u8`
[INFO] [stdout]    --> src/pixels.rs:245:21
[INFO] [stdout]     |
[INFO] [stdout] 245 |                     random.sample(&mut rng).into(),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 245 -                     random.sample(&mut rng).into(),
[INFO] [stdout] 245 +                     random.sample(&mut rng),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 245 -                     random.sample(&mut rng).into(),
[INFO] [stdout] 245 +                     <u8 as Into<_>>::into(random.sample(&mut rng)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `u8`
[INFO] [stdout]    --> src/pixels.rs:246:21
[INFO] [stdout]     |
[INFO] [stdout] 246 |                     random.sample(&mut rng).into(),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 246 -                     random.sample(&mut rng).into(),
[INFO] [stdout] 246 +                     random.sample(&mut rng),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 246 -                     random.sample(&mut rng).into(),
[INFO] [stdout] 246 +                     <u8 as Into<_>>::into(random.sample(&mut rng)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `u8`
[INFO] [stdout]    --> src/pixels.rs:247:21
[INFO] [stdout]     |
[INFO] [stdout] 247 |                     random.sample(&mut rng).into(),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 247 -                     random.sample(&mut rng).into(),
[INFO] [stdout] 247 +                     random.sample(&mut rng),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 247 -                     random.sample(&mut rng).into(),
[INFO] [stdout] 247 +                     <u8 as Into<_>>::into(random.sample(&mut rng)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/canvas.rs:519:54
[INFO] [stdout]     |
[INFO] [stdout] 515 |         &'a self,
[INFO] [stdout]     |          -- the lifetime is named here
[INFO] [stdout] ...
[INFO] [stdout] 519 |     ) -> impl Iterator<Item = PixelWithCoordinate> + '_
[INFO] [stdout]     |                                                      ^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 519 -     ) -> impl Iterator<Item = PixelWithCoordinate> + '_
[INFO] [stdout] 519 +     ) -> impl Iterator<Item = PixelWithCoordinate> + 'a
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pixtra` (lib) due to 3 previous errors; 15 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]    --> src/utility.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 | pub fn diff(c1: &Canvas, c2: &Canvas) -> Canvas {
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]    --> src/utility.rs:113:26
[INFO] [stdout]     |
[INFO] [stdout] 113 | pub fn diff(c1: &Canvas, c2: &Canvas) -> Canvas {
[INFO] [stdout]     |                          ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `u8`
[INFO] [stdout]    --> src/pixels.rs:245:21
[INFO] [stdout]     |
[INFO] [stdout] 245 |                     random.sample(&mut rng).into(),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 245 -                     random.sample(&mut rng).into(),
[INFO] [stdout] 245 +                     random.sample(&mut rng),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 245 -                     random.sample(&mut rng).into(),
[INFO] [stdout] 245 +                     <u8 as Into<_>>::into(random.sample(&mut rng)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `u8`
[INFO] [stdout]    --> src/pixels.rs:246:21
[INFO] [stdout]     |
[INFO] [stdout] 246 |                     random.sample(&mut rng).into(),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 246 -                     random.sample(&mut rng).into(),
[INFO] [stdout] 246 +                     random.sample(&mut rng),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 246 -                     random.sample(&mut rng).into(),
[INFO] [stdout] 246 +                     <u8 as Into<_>>::into(random.sample(&mut rng)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `u8`
[INFO] [stdout]    --> src/pixels.rs:247:21
[INFO] [stdout]     |
[INFO] [stdout] 247 |                     random.sample(&mut rng).into(),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 247 -                     random.sample(&mut rng).into(),
[INFO] [stdout] 247 +                     random.sample(&mut rng),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 247 -                     random.sample(&mut rng).into(),
[INFO] [stdout] 247 +                     <u8 as Into<_>>::into(random.sample(&mut rng)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/canvas.rs:519:54
[INFO] [stdout]     |
[INFO] [stdout] 515 |         &'a self,
[INFO] [stdout]     |          -- the lifetime is named here
[INFO] [stdout] ...
[INFO] [stdout] 519 |     ) -> impl Iterator<Item = PixelWithCoordinate> + '_
[INFO] [stdout]     |                                                      ^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 519 -     ) -> impl Iterator<Item = PixelWithCoordinate> + '_
[INFO] [stdout] 519 +     ) -> impl Iterator<Item = PixelWithCoordinate> + 'a
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pixtra` (lib test) due to 3 previous errors; 15 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d4459a8a94dafb3be5a17e83cbabe5288f7576081764c35bffe81229ca031323", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4459a8a94dafb3be5a17e83cbabe5288f7576081764c35bffe81229ca031323", kill_on_drop: false }`
[INFO] [stdout] d4459a8a94dafb3be5a17e83cbabe5288f7576081764c35bffe81229ca031323
