[INFO] crate convolician 0.1.0 is already in cache
[INFO] testing convolician-0.1.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate convolician 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate convolician 0.1.0 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate convolician 0.1.0
[INFO] finished tweaking crates.io crate convolician 0.1.0
[INFO] tweaked toml for crates.io crate convolician 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate convolician 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a845b3343e0f722c395fbec0092e348aeaab48c62d26ee76d03afe483e489a5d
[INFO] running `"docker" "start" "-a" "a845b3343e0f722c395fbec0092e348aeaab48c62d26ee76d03afe483e489a5d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling getrandom v0.1.8
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling ndarray-rand v0.9.0
[INFO] [stderr]    Compiling convolician v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]   --> src/array_implementation/random_matrix.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     use super::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d_x`
[INFO] [stderr]   --> src/array_implementation/mod.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let d_x = central_difference::central_difference_x(&m);
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_d_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `centre`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut centre = d_x.slice_mut(s![.., 1..-1]);
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_centre`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `before`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let before = &m.slice(s![.., ..-2]);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_before`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `after`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let after  = &m.slice(s![.., 2.. ]);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_after`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut centre = d_x.slice_mut(s![.., 1..-1]);
[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: `central_difference_x_2`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn central_difference_x_2(m: &Array2<u8>) -> Array2<i16> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.33s
[INFO] running `"docker" "inspect" "a845b3343e0f722c395fbec0092e348aeaab48c62d26ee76d03afe483e489a5d"`
[INFO] running `"docker" "rm" "-f" "a845b3343e0f722c395fbec0092e348aeaab48c62d26ee76d03afe483e489a5d"`
[INFO] [stdout] a845b3343e0f722c395fbec0092e348aeaab48c62d26ee76d03afe483e489a5d
[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=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e519a5877741c91934c432d904b9edbbc270c83749b4eb12f5c2075659193165
[INFO] running `"docker" "start" "-a" "e519a5877741c91934c432d904b9edbbc270c83749b4eb12f5c2075659193165"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling convolician v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]   --> src/array_implementation/random_matrix.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     use super::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d_x`
[INFO] [stderr]   --> src/array_implementation/mod.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let d_x = central_difference::central_difference_x(&m);
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_d_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `centre`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut centre = d_x.slice_mut(s![.., 1..-1]);
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_centre`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `before`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let before = &m.slice(s![.., ..-2]);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_before`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `after`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let after  = &m.slice(s![.., 2.. ]);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_after`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut centre = d_x.slice_mut(s![.., 1..-1]);
[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: `central_difference_x_2`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn central_difference_x_2(m: &Array2<u8>) -> Array2<i16> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d_x`
[INFO] [stderr]   --> src/array_implementation/mod.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let d_x = central_difference::central_difference_x(&m);
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_d_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `centre`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut centre = d_x.slice_mut(s![.., 1..-1]);
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_centre`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `before`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let before = &m.slice(s![.., ..-2]);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_before`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `after`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let after  = &m.slice(s![.., 2.. ]);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_after`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut centre = d_x.slice_mut(s![.., 1..-1]);
[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: `central_difference_x_2`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn central_difference_x_2(m: &Array2<u8>) -> Array2<i16> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_central_difference_x_negative_gradients`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:83:8
[INFO] [stderr]    |
[INFO] [stderr] 83 |     fn test_central_difference_x_negative_gradients() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_central_difference_x_one_column`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:87:8
[INFO] [stderr]    |
[INFO] [stderr] 87 |     fn test_central_difference_x_one_column() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_central_difference_x_zero_columns`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:91:8
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn test_central_difference_x_zero_columns() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.41s
[INFO] running `"docker" "inspect" "e519a5877741c91934c432d904b9edbbc270c83749b4eb12f5c2075659193165"`
[INFO] running `"docker" "rm" "-f" "e519a5877741c91934c432d904b9edbbc270c83749b4eb12f5c2075659193165"`
[INFO] [stdout] e519a5877741c91934c432d904b9edbbc270c83749b4eb12f5c2075659193165
[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=warn" "-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" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stdout] 290f3e5dd77c35b39a7177490ca8e1513dd3a005dc1f5c6d7c3ed9b98c711a12
[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" "290f3e5dd77c35b39a7177490ca8e1513dd3a005dc1f5c6d7c3ed9b98c711a12"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]   --> src/array_implementation/random_matrix.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     use super::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d_x`
[INFO] [stderr]   --> src/array_implementation/mod.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let d_x = central_difference::central_difference_x(&m);
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_d_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `centre`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut centre = d_x.slice_mut(s![.., 1..-1]);
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_centre`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `before`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let before = &m.slice(s![.., ..-2]);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_before`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `after`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let after  = &m.slice(s![.., 2.. ]);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_after`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut centre = d_x.slice_mut(s![.., 1..-1]);
[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: `central_difference_x_2`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn central_difference_x_2(m: &Array2<u8>) -> Array2<i16> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d_x`
[INFO] [stderr]   --> src/array_implementation/mod.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let d_x = central_difference::central_difference_x(&m);
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_d_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `centre`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut centre = d_x.slice_mut(s![.., 1..-1]);
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_centre`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `before`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let before = &m.slice(s![.., ..-2]);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_before`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `after`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let after  = &m.slice(s![.., 2.. ]);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_after`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut centre = d_x.slice_mut(s![.., 1..-1]);
[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: `central_difference_x_2`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn central_difference_x_2(m: &Array2<u8>) -> Array2<i16> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_central_difference_x_negative_gradients`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:83:8
[INFO] [stderr]    |
[INFO] [stderr] 83 |     fn test_central_difference_x_negative_gradients() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_central_difference_x_one_column`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:87:8
[INFO] [stderr]    |
[INFO] [stderr] 87 |     fn test_central_difference_x_one_column() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_central_difference_x_zero_columns`
[INFO] [stderr]   --> src/array_implementation/central_difference.rs:91:8
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn test_central_difference_x_zero_columns() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/convolician-a7ec8f18af14058f
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test array_implementation::central_difference::tests::test_central_difference_x ... ok
[INFO] [stdout] test array_implementation::central_difference::tests::test_deleteme ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/convolician-23639492c46d0559
[INFO] [stdout] test array_implementation::random_matrix::tests::test_generate ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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] [stderr]    Doc-tests convolician
[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" "290f3e5dd77c35b39a7177490ca8e1513dd3a005dc1f5c6d7c3ed9b98c711a12"`
[INFO] running `"docker" "rm" "-f" "290f3e5dd77c35b39a7177490ca8e1513dd3a005dc1f5c6d7c3ed9b98c711a12"`
[INFO] [stdout] 290f3e5dd77c35b39a7177490ca8e1513dd3a005dc1f5c6d7c3ed9b98c711a12