[INFO] fetching crate convolician 0.1.0...
[INFO] checking convolician-0.1.0 against master#cced03bfd61a304243a34504618ecec86c17063f for pr-157082
[INFO] extracting crate convolician 0.1.0 into /workspace/builds/worker-1-tc1/source
[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-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate convolician 0.1.0 on toolchain cced03bfd61a304243a34504618ecec86c17063f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate convolician 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_core v0.5.0
[INFO] [stderr]   Downloaded rand_chacha v0.2.1
[INFO] [stderr]   Downloaded lazy_static v1.3.0
[INFO] [stderr]   Downloaded getrandom v0.1.8
[INFO] [stderr]   Downloaded ndarray-rand v0.9.0
[INFO] [stderr]   Downloaded unicode-width v0.1.5
[INFO] [stderr]   Downloaded rand v0.7.0
[INFO] [stderr]   Downloaded c2-chacha v0.2.2
[INFO] [stderr]   Downloaded autocfg v0.1.5
[INFO] [stderr]   Downloaded either v1.5.2
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.5
[INFO] [stderr]   Downloaded libc v0.2.60
[INFO] [stderr]   Downloaded winapi v0.3.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] e7cbb162d46e9c34acb14780dc596cf60cc1f8cad80c676c1043182f9079f0fb
[INFO] running `Command { std: "docker" "start" "e7cbb162d46e9c34acb14780dc596cf60cc1f8cad80c676c1043182f9079f0fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e7cbb162d46e9c34acb14780dc596cf60cc1f8cad80c676c1043182f9079f0fb" "/opt/rustwide/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7cbb162d46e9c34acb14780dc596cf60cc1f8cad80c676c1043182f9079f0fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e7cbb162d46e9c34acb14780dc596cf60cc1f8cad80c676c1043182f9079f0fb" "/opt/rustwide/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking c2-chacha v0.2.2
[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-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)]` (part of `#[warn(unused)]`) on by default
[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)]` (part of `#[warn(unused)]`) 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]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[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: 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] 
[INFO] [stdout] warning: function `central_difference_x_2` is never used
[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)]` (part of `#[warn(unused)]`) on by default
[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)]` (part of `#[warn(unused)]`) 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]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[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: 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] 
[INFO] [stdout] warning: function `central_difference_x_2` is never used
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_central_difference_x_negative_gradients` is never used
[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 `test_central_difference_x_one_column` is never used
[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 `test_central_difference_x_zero_columns` is never used
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.16s
[INFO] running `Command { std: "docker" "inspect" "e7cbb162d46e9c34acb14780dc596cf60cc1f8cad80c676c1043182f9079f0fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7cbb162d46e9c34acb14780dc596cf60cc1f8cad80c676c1043182f9079f0fb", kill_on_drop: false }`
[INFO] [stdout] e7cbb162d46e9c34acb14780dc596cf60cc1f8cad80c676c1043182f9079f0fb
