[INFO] crate rail 0.3.1 is already in cache
[INFO] checking rail-0.3.1 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate rail 0.3.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rail 0.3.1 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rail 0.3.1
[INFO] finished tweaking crates.io crate rail 0.3.1
[INFO] tweaked toml for crates.io crate rail 0.3.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d2d09effa31708e772b566af40b1c48cbbe5945fede1d2b2868da7dfc51f0228
[INFO] running `"docker" "start" "-a" "d2d09effa31708e772b566af40b1c48cbbe5945fede1d2b2868da7dfc51f0228"`
[INFO] [stderr]    Compiling arrayfire v3.7.0
[INFO] [stderr]     Checking rail v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `arrayfire::print_gen`
[INFO] [stderr]   --> src/utils.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     use arrayfire::print_gen;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/functions/loss.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub type LossFuntion = Fn(&Matrix, &Matrix) -> f64;
[INFO] [stderr]   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Matrix, &Matrix) -> f64`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/functions/loss.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub type DLossFuntion = Fn(&Matrix, &Matrix) -> Matrix;
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Matrix, &Matrix) -> Matrix`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/functions/loss.rs:4:33
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub type LossFuntionGenerator = Fn() -> (Box<LossFuntion>, Box<DLossFuntion>);
[INFO] [stderr]   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> (Box<LossFuntion>, Box<DLossFuntion>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/layers/dense.rs:18:21
[INFO] [stderr]    |
[INFO] [stderr] 18 |     activation: Box<Fn(Matrix) -> Matrix>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Matrix) -> Matrix`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/layers/dense.rs:19:22
[INFO] [stderr]    |
[INFO] [stderr] 19 |     dactivation: Box<Fn(Matrix) -> Matrix>
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Matrix) -> Matrix`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/layers/conv.rs:23:21
[INFO] [stderr]    |
[INFO] [stderr] 23 |     activation: Box<Fn(Matrix) -> Matrix>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Matrix) -> Matrix`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/layers/conv.rs:24:22
[INFO] [stderr]    |
[INFO] [stderr] 24 |     dactivation: Box<Fn(Matrix) -> Matrix>
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Matrix) -> Matrix`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/layers/mod.rs:10:40
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn load_layer(src: &[&str]) -> Box<Layer> {
[INFO] [stderr]    |                                        ^^^^^ help: use `dyn`: `dyn Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:48:21
[INFO] [stderr]    |
[INFO] [stderr] 48 |     layers: Vec<Box<Layer>>,
[INFO] [stderr]    |                     ^^^^^ help: use `dyn`: `dyn Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:57:21
[INFO] [stderr]    |
[INFO] [stderr] 57 |     layers: Vec<Box<Layer>>,
[INFO] [stderr]    |                     ^^^^^ help: use `dyn`: `dyn Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:64:39
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn layer(mut self, layer: Box<Layer>) -> Self {
[INFO] [stderr]    |                                       ^^^^^ help: use `dyn`: `dyn Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/functions/loss.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub type LossFuntion = Fn(&Matrix, &Matrix) -> f64;
[INFO] [stderr]   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Matrix, &Matrix) -> f64`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/functions/loss.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub type DLossFuntion = Fn(&Matrix, &Matrix) -> Matrix;
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Matrix, &Matrix) -> Matrix`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/functions/loss.rs:4:33
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub type LossFuntionGenerator = Fn() -> (Box<LossFuntion>, Box<DLossFuntion>);
[INFO] [stderr]   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> (Box<LossFuntion>, Box<DLossFuntion>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/layers/dense.rs:18:21
[INFO] [stderr]    |
[INFO] [stderr] 18 |     activation: Box<Fn(Matrix) -> Matrix>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Matrix) -> Matrix`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/layers/dense.rs:19:22
[INFO] [stderr]    |
[INFO] [stderr] 19 |     dactivation: Box<Fn(Matrix) -> Matrix>
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Matrix) -> Matrix`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/layers/conv.rs:23:21
[INFO] [stderr]    |
[INFO] [stderr] 23 |     activation: Box<Fn(Matrix) -> Matrix>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Matrix) -> Matrix`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/layers/conv.rs:24:22
[INFO] [stderr]    |
[INFO] [stderr] 24 |     dactivation: Box<Fn(Matrix) -> Matrix>
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Matrix) -> Matrix`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/layers/mod.rs:10:40
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn load_layer(src: &[&str]) -> Box<Layer> {
[INFO] [stderr]    |                                        ^^^^^ help: use `dyn`: `dyn Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:48:21
[INFO] [stderr]    |
[INFO] [stderr] 48 |     layers: Vec<Box<Layer>>,
[INFO] [stderr]    |                     ^^^^^ help: use `dyn`: `dyn Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:57:21
[INFO] [stderr]    |
[INFO] [stderr] 57 |     layers: Vec<Box<Layer>>,
[INFO] [stderr]    |                     ^^^^^ help: use `dyn`: `dyn Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:64:39
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn layer(mut self, layer: Box<Layer>) -> Self {
[INFO] [stderr]    |                                       ^^^^^ help: use `dyn`: `dyn Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/model.rs:343:9
[INFO] [stderr]     |
[INFO] [stderr] 339 |         unimplemented!();
[INFO] [stderr]     |         ----------------- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 343 |         let mut fd = File::create(filename).expect("unable to create file!");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `src`
[INFO] [stderr]    --> src/layers/conv.rs:126:24
[INFO] [stderr]     |
[INFO] [stderr] 126 |     pub fn deserialize(src: &[&str]) -> Box<Self> {
[INFO] [stderr]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `filename`
[INFO] [stderr]    --> src/model.rs:338:32
[INFO] [stderr]     |
[INFO] [stderr] 338 |     pub fn save_weights(&self, filename: &str) {
[INFO] [stderr]     |                                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/model.rs:343:9
[INFO] [stderr]     |
[INFO] [stderr] 339 |         unimplemented!();
[INFO] [stderr]     |         ----------------- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 343 |         let mut fd = File::create(filename).expect("unable to create file!");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `src`
[INFO] [stderr]    --> src/layers/conv.rs:126:24
[INFO] [stderr]     |
[INFO] [stderr] 126 |     pub fn deserialize(src: &[&str]) -> Box<Self> {
[INFO] [stderr]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `filename`
[INFO] [stderr]    --> src/model.rs:338:32
[INFO] [stderr]     |
[INFO] [stderr] 338 |     pub fn save_weights(&self, filename: &str) {
[INFO] [stderr]     |                                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/model.rs:95:18
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn build(mut self, init: bool) -> Result<Model, ModelError> {
[INFO] [stderr]    |                  ----^^^^
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/model.rs:315:13
[INFO] [stderr]     |
[INFO] [stderr] 315 |         let mut lines = buf.split('\n').collect::<Vec<_>>();
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/model.rs:95:18
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn build(mut self, init: bool) -> Result<Model, ModelError> {
[INFO] [stderr]    |                  ----^^^^
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/model.rs:315:13
[INFO] [stderr]     |
[INFO] [stderr] 315 |         let mut lines = buf.split('\n').collect::<Vec<_>>();
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `convolve_valid`
[INFO] [stderr]   --> src/utils.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn convolve_valid(input: &Matrix, kernel: &Matrix) -> Matrix {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.42s
[INFO] running `"docker" "inspect" "d2d09effa31708e772b566af40b1c48cbbe5945fede1d2b2868da7dfc51f0228"`
[INFO] running `"docker" "rm" "-f" "d2d09effa31708e772b566af40b1c48cbbe5945fede1d2b2868da7dfc51f0228"`
[INFO] [stdout] d2d09effa31708e772b566af40b1c48cbbe5945fede1d2b2868da7dfc51f0228
