[INFO] crate convolician 0.1.0 is already in cache
[INFO] building convolician-0.1.0 against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] extracting crate convolician 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate convolician 0.1.0 on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-3/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" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5994c9152a1286222eef4751a3d65b9be023dd2eb9a3eb09843db04fd31bc452
[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" "5994c9152a1286222eef4751a3d65b9be023dd2eb9a3eb09843db04fd31bc452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5994c9152a1286222eef4751a3d65b9be023dd2eb9a3eb09843db04fd31bc452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5994c9152a1286222eef4751a3d65b9be023dd2eb9a3eb09843db04fd31bc452", kill_on_drop: false }`
[INFO] [stdout] 5994c9152a1286222eef4751a3d65b9be023dd2eb9a3eb09843db04fd31bc452
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", 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] 4cee650f4f0ab2583e3a4a27b139e744fa02bee15bd4f47440166d8d83d9819f
[INFO] running `Command { std: "docker" "start" "-a" "4cee650f4f0ab2583e3a4a27b139e744fa02bee15bd4f47440166d8d83d9819f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[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 v0.12.1
[INFO] [stderr]    Compiling ndarray-rand v0.9.0
[INFO] [stderr]    Compiling 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:29:13
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.87s
[INFO] running `Command { std: "docker" "inspect" "4cee650f4f0ab2583e3a4a27b139e744fa02bee15bd4f47440166d8d83d9819f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cee650f4f0ab2583e3a4a27b139e744fa02bee15bd4f47440166d8d83d9819f", kill_on_drop: false }`
[INFO] [stdout] 4cee650f4f0ab2583e3a4a27b139e744fa02bee15bd4f47440166d8d83d9819f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "test" "--frozen" "--no-run" "--message-format=json", 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] e4e5015b2424f3c053d0702092b56df76636bd387b2d5da29cf9a4d81f1209ab
[INFO] running `Command { std: "docker" "start" "-a" "e4e5015b2424f3c053d0702092b56df76636bd387b2d5da29cf9a4d81f1209ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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:29:13
[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:29:13
[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 test [unoptimized + debuginfo] target(s) in 3.78s
[INFO] running `Command { std: "docker" "inspect" "e4e5015b2424f3c053d0702092b56df76636bd387b2d5da29cf9a4d81f1209ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4e5015b2424f3c053d0702092b56df76636bd387b2d5da29cf9a4d81f1209ab", kill_on_drop: false }`
[INFO] [stdout] e4e5015b2424f3c053d0702092b56df76636bd387b2d5da29cf9a4d81f1209ab
