[INFO] updating cached repository https://github.com/legeyda/neurocr [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] 46838c8be4edee3452e26ef790fb982934acef9b [INFO] checking legeyda/neurocr against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flegeyda%2Fneurocr" "/workspace/builds/worker-2/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/legeyda/neurocr on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b [INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/legeyda/neurocr [INFO] finished tweaking git repo https://github.com/legeyda/neurocr [INFO] tweaked toml for git repo https://github.com/legeyda/neurocr written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/legeyda/neurocr already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "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] ee4dc86ef64f8ce70cf754a8581663b0288f26f420806ff4b1c3a63865d11cc3 [INFO] running `"docker" "start" "-a" "ee4dc86ef64f8ce70cf754a8581663b0288f26f420806ff4b1c3a63865d11cc3"` [INFO] [stderr] Checking termcolor v0.3.4 [INFO] [stderr] Checking mnist v0.4.0 [INFO] [stderr] Checking num-bigint v0.1.41 [INFO] [stderr] Checking simple_logger v0.5.0 [INFO] [stderr] Checking num-rational v0.1.40 [INFO] [stderr] Checking num v0.1.41 [INFO] [stderr] Checking chrono v0.4.0 [INFO] [stderr] Checking rulinalg v0.4.2 [INFO] [stderr] Checking env_logger v0.5.3 [INFO] [stderr] Checking neurocr v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/network.rs:500:2 [INFO] [stderr] | [INFO] [stderr] 500 | /// let us teach network to differ horizontal from vertial lines on 2-by-2 image [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 501 | debug!(""); [INFO] [stderr] | ----------- rustdoc does not generate documentation for macro expansions [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stderr] = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/network.rs:526:2 [INFO] [stderr] | [INFO] [stderr] 526 | /// let us teach network to differ horizontal from vertial lines on 2-by-2 image [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 527 | debug!(""); [INFO] [stderr] | ----------- rustdoc does not generate documentation for macro expansions [INFO] [stderr] | [INFO] [stderr] = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/network.rs:561:2 [INFO] [stderr] | [INFO] [stderr] 561 | /// let us teach network to differ horizontal from vertial lines on 2-by-2 image [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 562 | debug!(""); [INFO] [stderr] | ----------- rustdoc does not generate documentation for macro expansions [INFO] [stderr] | [INFO] [stderr] = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/network.rs:500:2 [INFO] [stderr] | [INFO] [stderr] 500 | /// let us teach network to differ horizontal from vertial lines on 2-by-2 image [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 501 | debug!(""); [INFO] [stderr] | ----------- rustdoc does not generate documentation for macro expansions [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stderr] = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/network.rs:526:2 [INFO] [stderr] | [INFO] [stderr] 526 | /// let us teach network to differ horizontal from vertial lines on 2-by-2 image [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 527 | debug!(""); [INFO] [stderr] | ----------- rustdoc does not generate documentation for macro expansions [INFO] [stderr] | [INFO] [stderr] = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/network.rs:561:2 [INFO] [stderr] | [INFO] [stderr] 561 | /// let us teach network to differ horizontal from vertial lines on 2-by-2 image [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 562 | debug!(""); [INFO] [stderr] | ----------- rustdoc does not generate documentation for macro expansions [INFO] [stderr] | [INFO] [stderr] = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion [INFO] [stderr] [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> src/lib.rs:5:1 [INFO] [stderr] | [INFO] [stderr] 5 | #[macro_use] [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::vec::Vec` [INFO] [stderr] --> src/mnistfiles.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::vec::Vec; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Fn` [INFO] [stderr] --> src/network.rs:18:26 [INFO] [stderr] | [INFO] [stderr] 18 | use std::ops::{Add, Mul, Fn}; [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/network.rs:195:17 [INFO] [stderr] | [INFO] [stderr] 195 | let mut der = (&outputs[n-1] - expected_output); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/math.rs:24:54 [INFO] [stderr] | [INFO] [stderr] 24 | fn minimize(subject: &Functional, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Functional` [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/math.rs:27:48 [INFO] [stderr] | [INFO] [stderr] 27 | ... on_new: &Fn(&VectorType) -> bool, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&VectorType) -> bool` [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead. [INFO] [stderr] --> src/mnistfiles.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use std::env::home_dir; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead. [INFO] [stderr] --> src/mnistfiles.rs:13:8 [INFO] [stderr] | [INFO] [stderr] 13 | match home_dir() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead. [INFO] [stderr] --> src/mnistfiles.rs:25:8 [INFO] [stderr] | [INFO] [stderr] 25 | match home_dir() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ignored` [INFO] [stderr] --> src/network.rs:76:61 [INFO] [stderr] | [INFO] [stderr] 76 | biases: Vector::zeros(num_neurons) .apply(&(|ignored| generator())), [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_ignored` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ignored` [INFO] [stderr] --> src/network.rs:77:61 [INFO] [stderr] | [INFO] [stderr] 77 | weights: Matrix::zeros(num_neurons, num_inputs).apply(&(|ignored| generator())) [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_ignored` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `n` [INFO] [stderr] --> src/network.rs:272:7 [INFO] [stderr] | [INFO] [stderr] 272 | let n = data.len(); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_n` [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::vec::Vec` [INFO] [stderr] --> src/mnistfiles.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::vec::Vec; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Fn` [INFO] [stderr] --> src/network.rs:18:26 [INFO] [stderr] | [INFO] [stderr] 18 | use std::ops::{Add, Mul, Fn}; [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/network.rs:195:17 [INFO] [stderr] | [INFO] [stderr] 195 | let mut der = (&outputs[n-1] - expected_output); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/math.rs:24:54 [INFO] [stderr] | [INFO] [stderr] 24 | fn minimize(subject: &Functional, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Functional` [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/math.rs:27:48 [INFO] [stderr] | [INFO] [stderr] 27 | ... on_new: &Fn(&VectorType) -> bool, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&VectorType) -> bool` [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead. [INFO] [stderr] --> src/mnistfiles.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use std::env::home_dir; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead. [INFO] [stderr] --> src/mnistfiles.rs:13:8 [INFO] [stderr] | [INFO] [stderr] 13 | match home_dir() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead. [INFO] [stderr] --> src/mnistfiles.rs:25:8 [INFO] [stderr] | [INFO] [stderr] 25 | match home_dir() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/math.rs:41:7 [INFO] [stderr] | [INFO] [stderr] 41 | let mut value: ScalarType = subject.eval(&estimation); [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: function is never used: `random` [INFO] [stderr] --> src/network.rs:61:1 [INFO] [stderr] | [INFO] [stderr] 61 | fn random() -> T where T: Float + Rand { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `minimize` [INFO] [stderr] --> src/math.rs:24:1 [INFO] [stderr] | [INFO] [stderr] 24 | / fn minimize(subject: &Functional, [INFO] [stderr] 25 | | mut estimation: VectorType, [INFO] [stderr] 26 | | mut step: ScalarType, [INFO] [stderr] 27 | | on_new: &Fn(&VectorType) -> bool, [INFO] [stderr] ... | [INFO] [stderr] 63 | | estimation [INFO] [stderr] 64 | | } [INFO] [stderr] | |_^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/mnistfiles.rs:40:2 [INFO] [stderr] | [INFO] [stderr] 40 | create_dir_all(cache_dir.as_path()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ignored` [INFO] [stderr] --> src/network.rs:76:61 [INFO] [stderr] | [INFO] [stderr] 76 | biases: Vector::zeros(num_neurons) .apply(&(|ignored| generator())), [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_ignored` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ignored` [INFO] [stderr] --> src/network.rs:77:61 [INFO] [stderr] | [INFO] [stderr] 77 | weights: Matrix::zeros(num_neurons, num_inputs).apply(&(|ignored| generator())) [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_ignored` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `n` [INFO] [stderr] --> src/network.rs:272:7 [INFO] [stderr] | [INFO] [stderr] 272 | let n = data.len(); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_n` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/math.rs:41:7 [INFO] [stderr] | [INFO] [stderr] 41 | let mut value: ScalarType = subject.eval(&estimation); [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: function is never used: `test_sigmoid` [INFO] [stderr] --> src/network.rs:39:1 [INFO] [stderr] | [INFO] [stderr] 39 | fn test_sigmoid() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `random` [INFO] [stderr] --> src/network.rs:61:1 [INFO] [stderr] | [INFO] [stderr] 61 | fn random() -> T where T: Float + Rand { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `asses_quality` [INFO] [stderr] --> src/network.rs:549:1 [INFO] [stderr] | [INFO] [stderr] 549 | fn asses_quality(network: Network, data: Vec>) -> f32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `minimize` [INFO] [stderr] --> src/math.rs:24:1 [INFO] [stderr] | [INFO] [stderr] 24 | / fn minimize(subject: &Functional, [INFO] [stderr] 25 | | mut estimation: VectorType, [INFO] [stderr] 26 | | mut step: ScalarType, [INFO] [stderr] 27 | | on_new: &Fn(&VectorType) -> bool, [INFO] [stderr] ... | [INFO] [stderr] 63 | | estimation [INFO] [stderr] 64 | | } [INFO] [stderr] | |_^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/mnistfiles.rs:40:2 [INFO] [stderr] | [INFO] [stderr] 40 | create_dir_all(cache_dir.as_path()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 10.91s [INFO] running `"docker" "inspect" "ee4dc86ef64f8ce70cf754a8581663b0288f26f420806ff4b1c3a63865d11cc3"` [INFO] running `"docker" "rm" "-f" "ee4dc86ef64f8ce70cf754a8581663b0288f26f420806ff4b1c3a63865d11cc3"` [INFO] [stdout] ee4dc86ef64f8ce70cf754a8581663b0288f26f420806ff4b1c3a63865d11cc3