[INFO] fetching crate nerio 0.1.1...
[INFO] checking nerio-0.1.1 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate nerio 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate nerio 0.1.1
[INFO] finished tweaking crates.io crate nerio 0.1.1
[INFO] tweaked toml for crates.io crate nerio 0.1.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate nerio 0.1.1 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nerio 0.1.1 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9de57f7a6b282d7cdb8bcdec88f72142a529b7fd0cd13c60d8a511d4d566f888
[INFO] running `Command { std: "docker" "start" "-a" "9de57f7a6b282d7cdb8bcdec88f72142a529b7fd0cd13c60d8a511d4d566f888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9de57f7a6b282d7cdb8bcdec88f72142a529b7fd0cd13c60d8a511d4d566f888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9de57f7a6b282d7cdb8bcdec88f72142a529b7fd0cd13c60d8a511d4d566f888", kill_on_drop: false }`
[INFO] [stdout] 9de57f7a6b282d7cdb8bcdec88f72142a529b7fd0cd13c60d8a511d4d566f888
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06907cbcf56a3cc49615ce0f5fd2ef944179cd7baf25531ad9c74bf36bb58a32
[INFO] running `Command { std: "docker" "start" "-a" "06907cbcf56a3cc49615ce0f5fd2ef944179cd7baf25531ad9c74bf36bb58a32", kill_on_drop: false }`
[INFO] [stderr]     Checking nerio v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `AddAssign`, `Add`, `Div`, `IndexMut`, `Index`, and `Mul`
[INFO] [stdout]  --> src/lib.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::{Add, AddAssign, Div, Index, IndexMut, Mul};
[INFO] [stdout]   |                ^^^  ^^^^^^^^^  ^^^  ^^^^^  ^^^^^^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AddAssign`, `Add`, `Div`, `IndexMut`, `Index`, and `Mul`
[INFO] [stdout]  --> src/lib.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::{Add, AddAssign, Div, Index, IndexMut, Mul};
[INFO] [stdout]   |                ^^^  ^^^^^^^^^  ^^^  ^^^^^  ^^^^^^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `layers`
[INFO] [stdout]    --> src/lib.rs:227:14
[INFO] [stdout]     |
[INFO] [stdout] 227 | macro_rules! layers {
[INFO] [stdout]     |              ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `activate`
[INFO] [stdout]    --> src/lib.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 |                 let activate = Nth::<Idx>::nth(&self.f);
[INFO] [stdout]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_activate`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid` is never used
[INFO] [stdout]   --> src/lib.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn sigmoid<E: linalg::Number>(x: E) -> E {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid_derivative` is never used
[INFO] [stdout]   --> src/lib.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn sigmoid_derivative<E: linalg::Number>(x: E) -> E {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `List` is never used
[INFO] [stdout]   --> src/lib.rs:19:7
[INFO] [stdout]    |
[INFO] [stdout] 19 | trait List {}
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Nil` is never constructed
[INFO] [stdout]   --> src/lib.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Nil;
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cons` is never constructed
[INFO] [stdout]   --> src/lib.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Cons<H, T>(H, T);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Zero` is never constructed
[INFO] [stdout]   --> src/lib.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct Zero;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Succ` is never constructed
[INFO] [stdout]   --> src/lib.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct Succ<N>(PhantomData<N>);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `S1` is never used
[INFO] [stdout]   --> src/lib.rs:34:6
[INFO] [stdout]    |
[INFO] [stdout] 34 | type S1<N = Zero> = Succ<N>;
[INFO] [stdout]    |      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `S2` is never used
[INFO] [stdout]   --> src/lib.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | type S2<N = Zero> = S1<S1<N>>;
[INFO] [stdout]    |      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `S4` is never used
[INFO] [stdout]   --> src/lib.rs:36:6
[INFO] [stdout]    |
[INFO] [stdout] 36 | type S4<N = Zero> = S2<S2<N>>;
[INFO] [stdout]    |      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `S8` is never used
[INFO] [stdout]   --> src/lib.rs:37:6
[INFO] [stdout]    |
[INFO] [stdout] 37 | type S8<N = Zero> = S4<S4<N>>;
[INFO] [stdout]    |      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `S16` is never used
[INFO] [stdout]   --> src/lib.rs:38:6
[INFO] [stdout]    |
[INFO] [stdout] 38 | type S16<N = Zero> = S8<S8<N>>;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `S32` is never used
[INFO] [stdout]   --> src/lib.rs:39:6
[INFO] [stdout]    |
[INFO] [stdout] 39 | type S32<N = Zero> = S16<S16<N>>;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `S64` is never used
[INFO] [stdout]   --> src/lib.rs:40:6
[INFO] [stdout]    |
[INFO] [stdout] 40 | type S64<N = Zero> = S32<S32<N>>;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Prec` is never used
[INFO] [stdout]   --> src/lib.rs:42:7
[INFO] [stdout]    |
[INFO] [stdout] 42 | trait Prec {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Repeat` is never used
[INFO] [stdout]   --> src/lib.rs:50:7
[INFO] [stdout]    |
[INFO] [stdout] 50 | trait Repeat<N> {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Length` is never used
[INFO] [stdout]   --> src/lib.rs:65:7
[INFO] [stdout]    |
[INFO] [stdout] 65 | trait Length {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Nth` is never used
[INFO] [stdout]   --> src/lib.rs:77:7
[INFO] [stdout]    |
[INFO] [stdout] 77 | trait Nth<Idx> {
[INFO] [stdout]    |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Layer` is never constructed
[INFO] [stdout]    --> src/lib.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 | struct Layer<E, const S: usize>([E; S]);
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Builder` is never used
[INFO] [stdout]    --> src/lib.rs:120:7
[INFO] [stdout]     |
[INFO] [stdout] 120 | trait Builder: Sized {
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ActivationFn` is never used
[INFO] [stdout]    --> src/lib.rs:140:7
[INFO] [stdout]     |
[INFO] [stdout] 140 | trait ActivationFn<E> {
[INFO] [stdout]     |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sigmoid` is never constructed
[INFO] [stdout]    --> src/lib.rs:145:8
[INFO] [stdout]     |
[INFO] [stdout] 145 | struct Sigmoid;
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Relu` is never constructed
[INFO] [stdout]    --> src/lib.rs:154:8
[INFO] [stdout]     |
[INFO] [stdout] 154 | struct Relu;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FeedforwardTimes` is never used
[INFO] [stdout]    --> src/lib.rs:162:7
[INFO] [stdout]     |
[INFO] [stdout] 162 | trait FeedforwardTimes<Idx, Times> {
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NeuralNetwork` is never constructed
[INFO] [stdout]    --> src/lib.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 166 | struct NeuralNetwork<W: List, B: List, A: List, E, F: List> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `feedforward` is never used
[INFO] [stdout]    --> src/lib.rs:209:8
[INFO] [stdout]     |
[INFO] [stdout] 205 | / impl<W: List + Length, B: List, A: List, E, F: List> NeuralNetwork<W, B, A, E, F>
[INFO] [stdout] 206 | | where
[INFO] [stdout] 207 | |     Self: FeedforwardTimes<Zero, <W as Length>::Output>,
[INFO] [stdout]     | |________________________________________________________- method in this implementation
[INFO] [stdout] 208 |   {
[INFO] [stdout] 209 |       fn feedforward(&mut self) -> &mut Self {
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:216:6
[INFO] [stdout]     |
[INFO] [stdout] 214 | impl<W: List, B: List, A: List, E, F: List> NeuralNetwork<W, B, A, E, F>
[INFO] [stdout]     | ------------------------------------------------------------------------ associated function in this implementation
[INFO] [stdout] 215 | {
[INFO] [stdout] 216 |         fn new(wba: (W, B, A), f: F) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Accum` is never used
[INFO] [stdout]  --> src/linalg.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Accum: Sized + AddAssign {}
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `RepeatableAccum` is never used
[INFO] [stdout]  --> src/linalg.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub trait RepeatableAccum: Accum + Mul<Output = Self> {}
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Number` is never used
[INFO] [stdout]   --> src/linalg.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub trait Number:
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mat_block2x2_dot` is never used
[INFO] [stdout]   --> src/linalg.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn mat_block2x2_dot(a: f32x4, b: f32x4) -> f32x4 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vvadd` is never used
[INFO] [stdout]   --> src/linalg.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn vvadd<T, const N: usize>(a: &[T; N], b: &[T; N]) -> [T; N]
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vmdot` is never used
[INFO] [stdout]   --> src/linalg.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn vmdot<T, const VS: usize, const MS: usize, const MC: usize>(
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `activate`
[INFO] [stdout]    --> src/lib.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 |                 let activate = Nth::<Idx>::nth(&self.f);
[INFO] [stdout]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_activate`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid` is never used
[INFO] [stdout]   --> src/lib.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn sigmoid<E: linalg::Number>(x: E) -> E {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid_derivative` is never used
[INFO] [stdout]   --> src/lib.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn sigmoid_derivative<E: linalg::Number>(x: E) -> E {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `S4` is never used
[INFO] [stdout]   --> src/lib.rs:36:6
[INFO] [stdout]    |
[INFO] [stdout] 36 | type S4<N = Zero> = S2<S2<N>>;
[INFO] [stdout]    |      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `S8` is never used
[INFO] [stdout]   --> src/lib.rs:37:6
[INFO] [stdout]    |
[INFO] [stdout] 37 | type S8<N = Zero> = S4<S4<N>>;
[INFO] [stdout]    |      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `S16` is never used
[INFO] [stdout]   --> src/lib.rs:38:6
[INFO] [stdout]    |
[INFO] [stdout] 38 | type S16<N = Zero> = S8<S8<N>>;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `S32` is never used
[INFO] [stdout]   --> src/lib.rs:39:6
[INFO] [stdout]    |
[INFO] [stdout] 39 | type S32<N = Zero> = S16<S16<N>>;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `S64` is never used
[INFO] [stdout]   --> src/lib.rs:40:6
[INFO] [stdout]    |
[INFO] [stdout] 40 | type S64<N = Zero> = S32<S32<N>>;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mat_block2x2_dot` is never used
[INFO] [stdout]   --> src/linalg.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn mat_block2x2_dot(a: f32x4, b: f32x4) -> f32x4 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "06907cbcf56a3cc49615ce0f5fd2ef944179cd7baf25531ad9c74bf36bb58a32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06907cbcf56a3cc49615ce0f5fd2ef944179cd7baf25531ad9c74bf36bb58a32", kill_on_drop: false }`
[INFO] [stdout] 06907cbcf56a3cc49615ce0f5fd2ef944179cd7baf25531ad9c74bf36bb58a32