[INFO] cloning repository https://github.com/gcharnock/neural-network-handwriting [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gcharnock/neural-network-handwriting" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgcharnock%2Fneural-network-handwriting", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgcharnock%2Fneural-network-handwriting'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 14fa3d41a5acbfb979a5bf2bd10b869476659794 [INFO] checking gcharnock/neural-network-handwriting/14fa3d41a5acbfb979a5bf2bd10b869476659794 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgcharnock%2Fneural-network-handwriting" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/gcharnock/neural-network-handwriting on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/gcharnock/neural-network-handwriting [INFO] finished tweaking git repo https://github.com/gcharnock/neural-network-handwriting [INFO] tweaked toml for git repo https://github.com/gcharnock/neural-network-handwriting written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/gcharnock/neural-network-handwriting 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded byteorder v1.2.3 [INFO] [stderr] Downloaded assert_approx_eq v1.0.0 [INFO] [stderr] Downloaded num-traits v0.2.4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3c6134d8c60e6ee62382e79f5b9a8748b251a74aca4fad29ca8b3ac4299f5f3a [INFO] running `Command { std: "docker" "start" "-a" "3c6134d8c60e6ee62382e79f5b9a8748b251a74aca4fad29ca8b3ac4299f5f3a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3c6134d8c60e6ee62382e79f5b9a8748b251a74aca4fad29ca8b3ac4299f5f3a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3c6134d8c60e6ee62382e79f5b9a8748b251a74aca4fad29ca8b3ac4299f5f3a", kill_on_drop: false }` [INFO] [stdout] 3c6134d8c60e6ee62382e79f5b9a8748b251a74aca4fad29ca8b3ac4299f5f3a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b33682cb796669a7b09394d4594205adcc15d433d121c8f57659aa42f75401da [INFO] running `Command { std: "docker" "start" "-a" "b33682cb796669a7b09394d4594205adcc15d433d121c8f57659aa42f75401da", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Compiling num-traits v0.2.4 [INFO] [stderr] Checking libc v0.2.40 [INFO] [stderr] Checking byteorder v1.2.3 [INFO] [stderr] Checking assert_approx_eq v1.0.0 [INFO] [stderr] Checking rand v0.4.2 [INFO] [stderr] Checking neural_network_handwriting v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0463]: can't find crate for `assert_approx_eq` [INFO] [stdout] --> src/main.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | extern crate assert_approx_eq; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sigmoid_prime_of_z_l_j` [INFO] [stdout] --> src/network.rs:134:21 [INFO] [stdout] | [INFO] [stdout] 134 | let sigmoid_prime_of_z_l_j = sigmoid_deriv(z[k]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sigmoid_prime_of_z_l_j` [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:230:17 [INFO] [stdout] | [INFO] [stdout] 230 | let mut prev_activation_errors = &mut front[i]; [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] error: aborting due to 1 previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0463`. [INFO] [stdout] [INFO] [stderr] error: could not compile `neural_network_handwriting` (bin "neural_network_handwriting") due to 2 previous errors; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unused variable: `sigmoid_prime_of_z_l_j` [INFO] [stdout] --> src/network.rs:134:21 [INFO] [stdout] | [INFO] [stdout] 134 | let sigmoid_prime_of_z_l_j = sigmoid_deriv(z[k]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sigmoid_prime_of_z_l_j` [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:230:17 [INFO] [stdout] | [INFO] [stdout] 230 | let mut prev_activation_errors = &mut front[i]; [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: unused variable: `net` [INFO] [stdout] --> src/network.rs:414:13 [INFO] [stdout] | [INFO] [stdout] 414 | let net = Network::new(vec![layer0, layer1]); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_net` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `sigmoid_vec` is never used [INFO] [stdout] --> src/network.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn sigmoid_vec(x: &Vec, out: &mut Vec) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `num_outputs` is never read [INFO] [stdout] --> src/network.rs:145:9 [INFO] [stdout] | [INFO] [stdout] 143 | pub struct Network { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 144 | pub num_inputs: usize, [INFO] [stdout] 145 | pub num_outputs: usize, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `find_d_cost_by_final_activations` is never used [INFO] [stdout] --> src/network.rs:241:12 [INFO] [stdout] | [INFO] [stdout] 153 | impl Network { [INFO] [stdout] | ------------------------------------------------------ method in this implementation [INFO] [stdout] ... [INFO] [stdout] 241 | pub fn find_d_cost_by_final_activations(&mut self, expected: &Vec) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `print` is never used [INFO] [stdout] --> src/linear.rs:46:8 [INFO] [stdout] | [INFO] [stdout] 13 | / impl Matrix [INFO] [stdout] 14 | | where [INFO] [stdout] 15 | | T: Mul { [INFO] [stdout] | |________________________- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 46 | fn print(&self) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "b33682cb796669a7b09394d4594205adcc15d433d121c8f57659aa42f75401da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b33682cb796669a7b09394d4594205adcc15d433d121c8f57659aa42f75401da", kill_on_drop: false }` [INFO] [stdout] b33682cb796669a7b09394d4594205adcc15d433d121c8f57659aa42f75401da