[INFO] updating cached repository https://github.com/tuvistavie/rust-simple-nn
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 626b12003a1201dc58094108e2a8cb2cbed1a0e0
[INFO] checking tuvistavie/rust-simple-nn against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftuvistavie%2Frust-simple-nn" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tuvistavie/rust-simple-nn on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tuvistavie/rust-simple-nn
[INFO] finished tweaking git repo https://github.com/tuvistavie/rust-simple-nn
[INFO] tweaked toml for git repo https://github.com/tuvistavie/rust-simple-nn written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/tuvistavie/rust-simple-nn already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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] 6e2300371ec38d3f25138c5f0e2311bfaa6b8b6c075a0ad40c764a2eb708b089
[INFO] running `"docker" "start" "-a" "6e2300371ec38d3f25138c5f0e2311bfaa6b8b6c075a0ad40c764a2eb708b089"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking simple_nn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network.rs:40:21
[INFO] [stderr]    |
[INFO] [stderr] 40 |     layers: Vec<Box<layers::Layer>>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[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/nn/network.rs:44:20
[INFO] [stderr]    |
[INFO] [stderr] 44 |     formatter: Box<Formatter>
[INFO] [stderr]    |                    ^^^^^^^^^ help: use `dyn`: `dyn Formatter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network.rs:48:32
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn new(layers: Vec<Box<layers::Layer>>, objective: Obj,
[INFO] [stderr]    |                                ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network.rs:49:65
[INFO] [stderr]    |
[INFO] [stderr] 49 |                optimizer: Opt, output: Box<Out>, formatter: Box<Formatter>) -> Network<Out, Obj, Opt> {
[INFO] [stderr]    |                                                                 ^^^^^^^^^ help: use `dyn`: `dyn Formatter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network.rs:63:51
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn get_layer(&self, index: usize) -> &Box<layers::Layer> {
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network.rs:67:63
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn get_mut_layer(&mut self, index: usize) -> &mut Box<layers::Layer> {
[INFO] [stderr]    |                                                               ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around `if` condition
[INFO] [stderr]    --> src/nn/network.rs:140:16
[INFO] [stderr]     |
[INFO] [stderr] 140 |             if { expected_normalized.at(row, 0) == v } { (hit + 1, miss) } else { (hit, miss + 1) }
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/nn/network_builder.rs:6:21
[INFO] [stderr]   |
[INFO] [stderr] 6 |     layers: Vec<Box<layers::Layer>>
[INFO] [stderr]   |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network_builder.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn add(mut self, layer: Box<layers::Layer>) -> NetworkBuilder {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network_builder.rs:27:21
[INFO] [stderr]    |
[INFO] [stderr] 27 |     layers: Vec<Box<layers::Layer>>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network_builder.rs:38:21
[INFO] [stderr]    |
[INFO] [stderr] 38 |     layers: Vec<Box<layers::Layer>>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network_builder.rs:53:21
[INFO] [stderr]    |
[INFO] [stderr] 53 |     layers: Vec<Box<layers::Layer>>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network_builder.rs:57:27
[INFO] [stderr]    |
[INFO] [stderr] 57 |     formatter: Option<Box<Formatter>>
[INFO] [stderr]    |                           ^^^^^^^^^ help: use `dyn`: `dyn Formatter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network_builder.rs:61:49
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn format_with(mut self, formatter: Box<Formatter>) -> NetworkBuilderWithOptimizer<Out, Obj, Opt> {
[INFO] [stderr]    |                                                 ^^^^^^^^^ help: use `dyn`: `dyn Formatter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/formatter.rs:11:27
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub measures: Vec<Box<Measure>>,
[INFO] [stderr]    |                           ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/formatter.rs:20:48
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn add_measure(&mut self, measure: Box<Measure>) {
[INFO] [stderr]    |                                                ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network.rs:40:21
[INFO] [stderr]    |
[INFO] [stderr] 40 |     layers: Vec<Box<layers::Layer>>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[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/nn/network.rs:44:20
[INFO] [stderr]    |
[INFO] [stderr] 44 |     formatter: Box<Formatter>
[INFO] [stderr]    |                    ^^^^^^^^^ help: use `dyn`: `dyn Formatter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network.rs:48:32
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn new(layers: Vec<Box<layers::Layer>>, objective: Obj,
[INFO] [stderr]    |                                ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network.rs:49:65
[INFO] [stderr]    |
[INFO] [stderr] 49 |                optimizer: Opt, output: Box<Out>, formatter: Box<Formatter>) -> Network<Out, Obj, Opt> {
[INFO] [stderr]    |                                                                 ^^^^^^^^^ help: use `dyn`: `dyn Formatter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network.rs:63:51
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn get_layer(&self, index: usize) -> &Box<layers::Layer> {
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network.rs:67:63
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn get_mut_layer(&mut self, index: usize) -> &mut Box<layers::Layer> {
[INFO] [stderr]    |                                                               ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around `if` condition
[INFO] [stderr]    --> src/nn/network.rs:140:16
[INFO] [stderr]     |
[INFO] [stderr] 140 |             if { expected_normalized.at(row, 0) == v } { (hit + 1, miss) } else { (hit, miss + 1) }
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/nn/network_builder.rs:6:21
[INFO] [stderr]   |
[INFO] [stderr] 6 |     layers: Vec<Box<layers::Layer>>
[INFO] [stderr]   |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network_builder.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn add(mut self, layer: Box<layers::Layer>) -> NetworkBuilder {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network_builder.rs:27:21
[INFO] [stderr]    |
[INFO] [stderr] 27 |     layers: Vec<Box<layers::Layer>>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network_builder.rs:38:21
[INFO] [stderr]    |
[INFO] [stderr] 38 |     layers: Vec<Box<layers::Layer>>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network_builder.rs:53:21
[INFO] [stderr]    |
[INFO] [stderr] 53 |     layers: Vec<Box<layers::Layer>>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn layers::Layer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network_builder.rs:57:27
[INFO] [stderr]    |
[INFO] [stderr] 57 |     formatter: Option<Box<Formatter>>
[INFO] [stderr]    |                           ^^^^^^^^^ help: use `dyn`: `dyn Formatter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/network_builder.rs:61:49
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn format_with(mut self, formatter: Box<Formatter>) -> NetworkBuilderWithOptimizer<Out, Obj, Opt> {
[INFO] [stderr]    |                                                 ^^^^^^^^^ help: use `dyn`: `dyn Formatter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/formatter.rs:11:27
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub measures: Vec<Box<Measure>>,
[INFO] [stderr]    |                           ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/nn/formatter.rs:20:48
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn add_measure(&mut self, measure: Box<Measure>) {
[INFO] [stderr]    |                                                ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/nn/network.rs:126:17
[INFO] [stderr]     |
[INFO] [stderr] 126 |             let mut weights = self.get_mut_layer(index).get_mut_weights();
[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: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/nn/network.rs:126:17
[INFO] [stderr]     |
[INFO] [stderr] 126 |             let mut weights = self.get_mut_layer(index).get_mut_weights();
[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: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]   --> tests/linalg_matrix.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     &matrix + &other;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.63s
[INFO] running `"docker" "inspect" "6e2300371ec38d3f25138c5f0e2311bfaa6b8b6c075a0ad40c764a2eb708b089"`
[INFO] running `"docker" "rm" "-f" "6e2300371ec38d3f25138c5f0e2311bfaa6b8b6c075a0ad40c764a2eb708b089"`
[INFO] [stdout] 6e2300371ec38d3f25138c5f0e2311bfaa6b8b6c075a0ad40c764a2eb708b089