[INFO] updating cached repository https://github.com/woowe/convolution [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] 3283ba170f295d1ffddbff6184d4c0d5bfc9d724 [INFO] checking woowe/convolution against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwoowe%2Fconvolution" "/workspace/builds/worker-6/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/woowe/convolution on toolchain 45d050cde277b22a755847338f2acc2c7b834141 [INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/woowe/convolution [INFO] finished tweaking git repo https://github.com/woowe/convolution [INFO] tweaked toml for git repo https://github.com/woowe/convolution written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/woowe/convolution already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "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-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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 73b5856390afe40dde8105ae38b6824a78fe3895f0f75eb6bcd514a03ea3a8ac [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "73b5856390afe40dde8105ae38b6824a78fe3895f0f75eb6bcd514a03ea3a8ac"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Checking libc v0.2.17 [INFO] [stderr] Compiling gcc v0.3.38 [INFO] [stderr] Checking rustc-serialize v0.3.21 [INFO] [stderr] Checking inflate v0.1.1 [INFO] [stderr] Checking color_quant v1.0.0 [INFO] [stderr] Checking lzw v0.10.0 [INFO] [stderr] Checking scoped_threadpool v0.1.7 [INFO] [stderr] Checking matrixmultiply v0.1.12 [INFO] [stderr] Checking num v0.1.36 [INFO] [stderr] Checking enum_primitive v0.1.0 [INFO] [stderr] Checking gif v0.9.0 [INFO] [stderr] Checking rand v0.3.14 [INFO] [stderr] Checking num_cpus v1.1.0 [INFO] [stderr] Compiling miniz-sys v0.1.7 [INFO] [stderr] Checking deque v0.3.1 [INFO] [stderr] Checking flate2 v0.2.14 [INFO] [stderr] Checking rayon v0.5.0 [INFO] [stderr] Checking rayon v0.4.3 [INFO] [stderr] Checking png v0.5.2 [INFO] [stderr] Checking num_rust v0.1.0 (https://github.com/woowe/num_rust.git#ad88ba18) [INFO] [stderr] Checking jpeg-decoder v0.1.8 [INFO] [stderr] Checking num-bigint v0.1.35 [INFO] [stderr] Checking num-rational v0.1.35 [INFO] [stderr] Checking image v0.10.3 [INFO] [stderr] Checking convolution v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `num_rust::ext::impls::*` [INFO] [stderr] --> src/main.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use num_rust::ext::impls::*; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `image::GenericImage` [INFO] [stderr] --> src/main.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | use image::GenericImage; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::fs::File` [INFO] [stderr] --> src/main.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 11 | use std::fs::File; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `num_rust::ext::impls::*` [INFO] [stderr] --> src/main.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use num_rust::ext::impls::*; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `image::GenericImage` [INFO] [stderr] --> src/main.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | use image::GenericImage; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::fs::File` [INFO] [stderr] --> src/main.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 11 | use std::fs::File; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `image` [INFO] [stderr] --> src/main.rs:61:9 [INFO] [stderr] | [INFO] [stderr] 61 | let mut image = (0..28*28).map(|i: usize| i as f64).collect::>().reshape(28, 28).unwrap(); [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_image` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `conv` [INFO] [stderr] --> src/main.rs:69:9 [INFO] [stderr] | [INFO] [stderr] 69 | let conv = Kernel::new(conv_m); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_conv` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `filtered` [INFO] [stderr] --> src/main.rs:76:9 [INFO] [stderr] | [INFO] [stderr] 76 | let filtered = img.filter3x3(&kernel); [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filtered` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `norm_m` [INFO] [stderr] --> src/main.rs:33:13 [INFO] [stderr] | [INFO] [stderr] 33 | let norm_m = vec![1./(size as f64); size].reshape(convolution.get_rows(), convolution.get_cols()).unwrap(); [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_norm_m` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:61:9 [INFO] [stderr] | [INFO] [stderr] 61 | let mut image = (0..28*28).map(|i: usize| i as f64).collect::>().reshape(28, 28).unwrap(); [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: `get_matrix_window` [INFO] [stderr] --> src/main.rs:13:4 [INFO] [stderr] | [INFO] [stderr] 13 | fn get_matrix_window(matrix: &Matrix2d, n: usize, m: usize, i: usize, j: usize) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `matrix` [INFO] [stderr] --> src/main.rs:27:5 [INFO] [stderr] | [INFO] [stderr] 27 | matrix: Matrix2d [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `apply` [INFO] [stderr] --> src/main.rs:39:5 [INFO] [stderr] | [INFO] [stderr] 39 | pub fn apply(&self, image: &Matrix2d) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `image` [INFO] [stderr] --> src/main.rs:61:9 [INFO] [stderr] | [INFO] [stderr] 61 | let mut image = (0..28*28).map(|i: usize| i as f64).collect::>().reshape(28, 28).unwrap(); [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_image` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `conv` [INFO] [stderr] --> src/main.rs:69:9 [INFO] [stderr] | [INFO] [stderr] 69 | let conv = Kernel::new(conv_m); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_conv` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `filtered` [INFO] [stderr] --> src/main.rs:76:9 [INFO] [stderr] | [INFO] [stderr] 76 | let filtered = img.filter3x3(&kernel); [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filtered` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `norm_m` [INFO] [stderr] --> src/main.rs:33:13 [INFO] [stderr] | [INFO] [stderr] 33 | let norm_m = vec![1./(size as f64); size].reshape(convolution.get_rows(), convolution.get_cols()).unwrap(); [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_norm_m` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:61:9 [INFO] [stderr] | [INFO] [stderr] 61 | let mut image = (0..28*28).map(|i: usize| i as f64).collect::>().reshape(28, 28).unwrap(); [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: `get_matrix_window` [INFO] [stderr] --> src/main.rs:13:4 [INFO] [stderr] | [INFO] [stderr] 13 | fn get_matrix_window(matrix: &Matrix2d, n: usize, m: usize, i: usize, j: usize) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `matrix` [INFO] [stderr] --> src/main.rs:27:5 [INFO] [stderr] | [INFO] [stderr] 27 | matrix: Matrix2d [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `apply` [INFO] [stderr] --> src/main.rs:39:5 [INFO] [stderr] | [INFO] [stderr] 39 | pub fn apply(&self, image: &Matrix2d) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 11 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 11 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 16.39s [INFO] running `"docker" "inspect" "73b5856390afe40dde8105ae38b6824a78fe3895f0f75eb6bcd514a03ea3a8ac"` [INFO] running `"docker" "rm" "-f" "73b5856390afe40dde8105ae38b6824a78fe3895f0f75eb6bcd514a03ea3a8ac"` [INFO] [stdout] 73b5856390afe40dde8105ae38b6824a78fe3895f0f75eb6bcd514a03ea3a8ac