[INFO] fetching crate convolician 0.1.0...
[INFO] checking convolician-0.1.0 against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] extracting crate convolician 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate convolician 0.1.0 on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-7/source/Cargo.toml
[INFO] crate crates.io crate convolician 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded getrandom v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a29c045e5b05731cce067d4b72d91be996167eeb0fae82b3b6bb84dac47b5a52
[INFO] running `Command { std: "docker" "start" "-a" "a29c045e5b05731cce067d4b72d91be996167eeb0fae82b3b6bb84dac47b5a52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a29c045e5b05731cce067d4b72d91be996167eeb0fae82b3b6bb84dac47b5a52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a29c045e5b05731cce067d4b72d91be996167eeb0fae82b3b6bb84dac47b5a52", kill_on_drop: false }`
[INFO] [stdout] a29c045e5b05731cce067d4b72d91be996167eeb0fae82b3b6bb84dac47b5a52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34512aff338dc3b3472703ffb7f4f134e955315be94e3f24a27bc8b2249e308a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "34512aff338dc3b3472703ffb7f4f134e955315be94e3f24a27bc8b2249e308a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking getrandom v0.1.8
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking ndarray v0.12.1
[INFO] [stderr]     Checking ndarray-rand v0.9.0
[INFO] [stderr]     Checking convolician v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/array_implementation/random_matrix.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d_x`
[INFO] [stdout]   --> src/array_implementation/mod.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let d_x = central_difference::central_difference_x(&m);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_d_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `centre`
[INFO] [stdout]   --> src/array_implementation/central_difference.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut centre = d_x.slice_mut(s![.., 1..-1]);
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_centre`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `before`
[INFO] [stdout]   --> src/array_implementation/central_difference.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let before = &m.slice(s![.., ..-2]);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_before`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `after`
[INFO] [stdout]   --> src/array_implementation/central_difference.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let after  = &m.slice(s![.., 2.. ]);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_after`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/array_implementation/central_difference.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut centre = d_x.slice_mut(s![.., 1..-1]);
[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: function is never used: `central_difference_x_2`
[INFO] [stdout]   --> src/array_implementation/central_difference.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn central_difference_x_2(m: &Array2<u8>) -> Array2<i16> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d_x`
[INFO] [stdout]   --> src/array_implementation/mod.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let d_x = central_difference::central_difference_x(&m);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_d_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `centre`
[INFO] [stdout]   --> src/array_implementation/central_difference.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut centre = d_x.slice_mut(s![.., 1..-1]);
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_centre`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `before`
[INFO] [stdout]   --> src/array_implementation/central_difference.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let before = &m.slice(s![.., ..-2]);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_before`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `after`
[INFO] [stdout]   --> src/array_implementation/central_difference.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let after  = &m.slice(s![.., 2.. ]);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_after`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/array_implementation/central_difference.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut centre = d_x.slice_mut(s![.., 1..-1]);
[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: function is never used: `central_difference_x_2`
[INFO] [stdout]   --> src/array_implementation/central_difference.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn central_difference_x_2(m: &Array2<u8>) -> Array2<i16> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_central_difference_x_negative_gradients`
[INFO] [stdout]   --> src/array_implementation/central_difference.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn test_central_difference_x_negative_gradients() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_central_difference_x_one_column`
[INFO] [stdout]   --> src/array_implementation/central_difference.rs:87:8
[INFO] [stdout]    |
[INFO] [stdout] 87 |     fn test_central_difference_x_one_column() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_central_difference_x_zero_columns`
[INFO] [stdout]   --> src/array_implementation/central_difference.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn test_central_difference_x_zero_columns() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.81s
[INFO] running `Command { std: "docker" "inspect" "34512aff338dc3b3472703ffb7f4f134e955315be94e3f24a27bc8b2249e308a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34512aff338dc3b3472703ffb7f4f134e955315be94e3f24a27bc8b2249e308a", kill_on_drop: false }`
[INFO] [stdout] 34512aff338dc3b3472703ffb7f4f134e955315be94e3f24a27bc8b2249e308a
