[INFO] updating cached repository woowe/convolution
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/woowe/convolution
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/woowe/convolution" "work/ex/beta-1.38-1/sources/1.37.0/gh/woowe/convolution"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/woowe/convolution'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/woowe/convolution" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/woowe/convolution"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/woowe/convolution'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3283ba170f295d1ffddbff6184d4c0d5bfc9d724
[INFO] sha for GitHub repo woowe/convolution: 3283ba170f295d1ffddbff6184d4c0d5bfc9d724
[INFO] validating manifest of woowe/convolution on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of woowe/convolution on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing woowe/convolution
[INFO] finished frobbing woowe/convolution
[INFO] frobbed toml for woowe/convolution written to work/ex/beta-1.38-1/sources/1.37.0/gh/woowe/convolution/Cargo.toml
[INFO] started frobbing woowe/convolution
[INFO] finished frobbing woowe/convolution
[INFO] frobbed toml for woowe/convolution written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/woowe/convolution/Cargo.toml
[INFO] crate woowe/convolution already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing woowe/convolution against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/woowe/convolution:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 6a0f6ad6fdc4e862705dad9fca9ce6979fdd8f08d86c3623689713ae92408c83
[INFO] running `"docker" "start" "-a" "6a0f6ad6fdc4e862705dad9fca9ce6979fdd8f08d86c3623689713ae92408c83"`
[INFO] [stderr]    Compiling rustc-serialize v0.3.21
[INFO] [stderr]    Compiling matrixmultiply v0.1.12
[INFO] [stderr]    Compiling miniz-sys v0.1.7
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling num_cpus v1.1.0
[INFO] [stderr]    Compiling gif v0.9.0
[INFO] [stderr]    Compiling enum_primitive v0.1.0
[INFO] [stderr]    Compiling flate2 v0.2.14
[INFO] [stderr]    Compiling deque v0.3.1
[INFO] [stderr]    Compiling rayon v0.5.0
[INFO] [stderr]    Compiling rayon v0.4.3
[INFO] [stderr]    Compiling png v0.5.2
[INFO] [stderr]    Compiling jpeg-decoder v0.1.8
[INFO] [stderr]    Compiling num_rust v0.1.0 (https://github.com/woowe/num_rust.git#ad88ba18)
[INFO] [stderr]    Compiling num-bigint v0.1.35
[INFO] [stderr]    Compiling num-rational v0.1.35
[INFO] [stderr]    Compiling image v0.10.3
[INFO] [stderr]    Compiling convolution v0.1.0 (/opt/crater/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 variable: `image`
[INFO] [stderr]   --> src/main.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |     let mut image = (0..28*28).map(|i: usize| i as f64).collect::<Vec<f64>>().reshape(28, 28).unwrap();
[INFO] [stderr]    |             ^^^^^ help: consider prefixing 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: consider prefixing 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: consider prefixing 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: consider prefixing 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::<Vec<f64>>().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:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn get_matrix_window(matrix: &Matrix2d, n: usize, m: usize, i: usize, j: usize) -> Option<Matrix2d> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `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<Matrix2d> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.87s
[INFO] running `"docker" "inspect" "6a0f6ad6fdc4e862705dad9fca9ce6979fdd8f08d86c3623689713ae92408c83"`
[INFO] running `"docker" "rm" "-f" "6a0f6ad6fdc4e862705dad9fca9ce6979fdd8f08d86c3623689713ae92408c83"`
[INFO] [stdout] 6a0f6ad6fdc4e862705dad9fca9ce6979fdd8f08d86c3623689713ae92408c83
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/woowe/convolution:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] eeac00db4cc981613d751793aa93ad7353e4e02abb815a4a82727feec727e7d9
[INFO] running `"docker" "start" "-a" "eeac00db4cc981613d751793aa93ad7353e4e02abb815a4a82727feec727e7d9"`
[INFO] [stderr]    Compiling convolution v0.1.0 (/opt/crater/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 variable: `image`
[INFO] [stderr]   --> src/main.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |     let mut image = (0..28*28).map(|i: usize| i as f64).collect::<Vec<f64>>().reshape(28, 28).unwrap();
[INFO] [stderr]    |             ^^^^^ help: consider prefixing 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: consider prefixing 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: consider prefixing 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: consider prefixing 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::<Vec<f64>>().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:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn get_matrix_window(matrix: &Matrix2d, n: usize, m: usize, i: usize, j: usize) -> Option<Matrix2d> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `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<Matrix2d> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `"docker" "inspect" "eeac00db4cc981613d751793aa93ad7353e4e02abb815a4a82727feec727e7d9"`
[INFO] running `"docker" "rm" "-f" "eeac00db4cc981613d751793aa93ad7353e4e02abb815a4a82727feec727e7d9"`
[INFO] [stdout] eeac00db4cc981613d751793aa93ad7353e4e02abb815a4a82727feec727e7d9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/woowe/convolution:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] d4513892810cc89132cb9459cb170df26050ba75f79a7a8046a51bf96eca40b7
[INFO] running `"docker" "start" "-a" "d4513892810cc89132cb9459cb170df26050ba75f79a7a8046a51bf96eca40b7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/convolution-029e684cc05cb57d
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "d4513892810cc89132cb9459cb170df26050ba75f79a7a8046a51bf96eca40b7"`
[INFO] running `"docker" "rm" "-f" "d4513892810cc89132cb9459cb170df26050ba75f79a7a8046a51bf96eca40b7"`
[INFO] [stdout] d4513892810cc89132cb9459cb170df26050ba75f79a7a8046a51bf96eca40b7