[INFO] cloning repository https://github.com/celestecote21/neuronal_network_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/celestecote21/neuronal_network_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcelestecote21%2Fneuronal_network_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcelestecote21%2Fneuronal_network_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 77e259ae87653e040e4e90249c4c18c928e27144
[INFO] checking celestecote21/neuronal_network_rust against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcelestecote21%2Fneuronal_network_rust" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/celestecote21/neuronal_network_rust on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/celestecote21/neuronal_network_rust
[INFO] finished tweaking git repo https://github.com/celestecote21/neuronal_network_rust
[INFO] tweaked toml for git repo https://github.com/celestecote21/neuronal_network_rust written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/celestecote21/neuronal_network_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3b15e4ab7a223d0172a5d2182ead7143c404b764b48745a145bbefc06d0462c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e3b15e4ab7a223d0172a5d2182ead7143c404b764b48745a145bbefc06d0462c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3b15e4ab7a223d0172a5d2182ead7143c404b764b48745a145bbefc06d0462c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3b15e4ab7a223d0172a5d2182ead7143c404b764b48745a145bbefc06d0462c", kill_on_drop: false }`
[INFO] [stdout] e3b15e4ab7a223d0172a5d2182ead7143c404b764b48745a145bbefc06d0462c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43fe32a7d6ca773154f4ccd212552dff3adde3da19080845b0716f5fb6a8219d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "43fe32a7d6ca773154f4ccd212552dff3adde3da19080845b0716f5fb6a8219d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]     Checking nalgebra v0.18.1
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking neuronal_network_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/main.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         for t in 0..nb_img{
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/main.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         for t in 0..nb_img{
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/network.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 |             let mut delta_out = match lm::hadamard(delta_out, Network::sigmoid_deri_v(z_last)){
[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/network.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 |             let mut delta_out = match lm::hadamard(delta_out, Network::sigmoid_deri_v(z_last)){
[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: field is never read: `vec_used`
[INFO] [stdout]   --> src/training_tuple.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     vec_used: Vec<bool>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `vec_used`
[INFO] [stdout]   --> src/training_tuple.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     vec_used: Vec<bool>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `neur_L` should have a snake case name
[INFO] [stdout]   --> src/network.rs:82:21
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 for neur_L in 0..(self.layers_size[current_dim - 1]) as usize{
[INFO] [stdout]    |                     ^^^^^^ help: convert the identifier to snake case: `neur_l`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `neur_L1` should have a snake case name
[INFO] [stdout]   --> src/network.rs:84:25
[INFO] [stdout]    |
[INFO] [stdout] 84 |                     for neur_L1 in 0..(self.layers_size[current_dim]) as usize{
[INFO] [stdout]    |                         ^^^^^^^ help: convert the identifier to snake case: `neur_l1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `neur_L` should have a snake case name
[INFO] [stdout]   --> src/network.rs:82:21
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 for neur_L in 0..(self.layers_size[current_dim - 1]) as usize{
[INFO] [stdout]    |                     ^^^^^^ help: convert the identifier to snake case: `neur_l`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `neur_L1` should have a snake case name
[INFO] [stdout]   --> src/network.rs:84:25
[INFO] [stdout]    |
[INFO] [stdout] 84 |                     for neur_L1 in 0..(self.layers_size[current_dim]) as usize{
[INFO] [stdout]    |                         ^^^^^^^ help: convert the identifier to snake case: `neur_l1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/network.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |         self.change_b_w(delta_total, a_total);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/network.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |         self.change_b_w(delta_total, a_total);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.61s
[INFO] running `Command { std: "docker" "inspect" "43fe32a7d6ca773154f4ccd212552dff3adde3da19080845b0716f5fb6a8219d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43fe32a7d6ca773154f4ccd212552dff3adde3da19080845b0716f5fb6a8219d", kill_on_drop: false }`
[INFO] [stdout] 43fe32a7d6ca773154f4ccd212552dff3adde3da19080845b0716f5fb6a8219d