[INFO] cloning repository https://github.com/matthewashton-k/edge-detection
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matthewashton-k/edge-detection" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthewashton-k%2Fedge-detection", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthewashton-k%2Fedge-detection'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4be83f696a6c2737ee5b8ebfa23f2b973d3c1b06
[INFO] testing matthewashton-k/edge-detection against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthewashton-k%2Fedge-detection" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/matthewashton-k/edge-detection
[INFO] finished tweaking git repo https://github.com/matthewashton-k/edge-detection
[INFO] tweaked toml for git repo https://github.com/matthewashton-k/edge-detection written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/matthewashton-k/edge-detection on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/matthewashton-k/edge-detection 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" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f7df848dc809850ed6f452c429d23b07c81e1ba79103b6ab91b4865c07d4128
[INFO] running `Command { std: "docker" "start" "-a" "2f7df848dc809850ed6f452c429d23b07c81e1ba79103b6ab91b4865c07d4128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f7df848dc809850ed6f452c429d23b07c81e1ba79103b6ab91b4865c07d4128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f7df848dc809850ed6f452c429d23b07c81e1ba79103b6ab91b4865c07d4128", kill_on_drop: false }`
[INFO] [stdout] 2f7df848dc809850ed6f452c429d23b07c81e1ba79103b6ab91b4865c07d4128
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8dde3f5b359d4b27d8dd98e25d03aa69faa50431df77fcb35dd405c4288e9eb0
[INFO] running `Command { std: "docker" "start" "-a" "8dde3f5b359d4b27d8dd98e25d03aa69faa50431df77fcb35dd405c4288e9eb0", kill_on_drop: false }`
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[INFO] [stderr]    Compiling inotify v0.9.6
[INFO] [stderr]    Compiling ecolor v0.31.1
[INFO] [stderr]    Compiling ndarray v0.16.1
[INFO] [stderr]    Compiling safe_arch v0.7.4
[INFO] [stderr]    Compiling re_math v0.20.0
[INFO] [stderr]    Compiling filetime v0.2.25
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling array-init v2.1.0
[INFO] [stderr]    Compiling wide v0.7.32
[INFO] [stderr]    Compiling notify v6.1.1
[INFO] [stderr]    Compiling re_crash_handler v0.22.1
[INFO] [stderr]    Compiling parquet v53.4.1
[INFO] [stderr]    Compiling re_query v0.22.1
[INFO] [stderr]    Compiling re_sdk v0.22.1
[INFO] [stderr]    Compiling memory-stats v1.2.0
[INFO] [stderr]    Compiling sysinfo v0.30.13
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling re_types v0.22.1
[INFO] [stderr]    Compiling ttf-parser v0.25.1
[INFO] [stderr]    Compiling v4l2-sys-mit v0.3.0
[INFO] [stderr]    Compiling re_memory v0.22.1
[INFO] [stderr]    Compiling simba v0.8.1
[INFO] [stderr]    Compiling insta v1.42.2
[INFO] [stderr]    Compiling owned_ttf_parser v0.25.0
[INFO] [stderr]    Compiling re_sdk_comms v0.22.1
[INFO] [stderr]    Compiling rerun v0.22.1
[INFO] [stderr]    Compiling re_int_histogram v0.22.1
[INFO] [stderr]    Compiling ab_glyph_rasterizer v0.1.8
[INFO] [stderr]    Compiling ab_glyph v0.2.29
[INFO] [stderr]    Compiling re_entity_db v0.22.1
[INFO] [stderr]    Compiling re_dataframe v0.22.1
[INFO] [stderr]    Compiling rand_distr v0.4.3
[INFO] [stderr]    Compiling re_capabilities v0.22.1
[INFO] [stderr]    Compiling v4l v0.14.0
[INFO] [stderr]    Compiling nalgebra v0.32.6
[INFO] [stderr]    Compiling re_data_loader v0.22.1
[INFO] [stderr]    Compiling imageproc v0.25.0
[INFO] [stderr]    Compiling edge_detection v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `fs` and `time::Duration`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs, time::Duration};
[INFO] [stdout]   |           ^^  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `imageproc::image::GrayImage`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use imageproc::image::GrayImage;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rerun::external::image::ImageBuffer`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rerun::external::image::ImageBuffer;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EncodedImage` and `ImageFormat`
[INFO] [stdout]  --> src/main.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rerun::{EncodedImage, Image, ImageFormat, RecordingStream};
[INFO] [stdout]   |             ^^^^^^^^^^^^         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `v4l::FourCC`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use v4l::FourCC;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `meta`
[INFO] [stdout]   --> src/main.rs:35:28
[INFO] [stdout]    |
[INFO] [stdout] 35 |         while let Ok((buf, meta)) = stream.next() {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `logs_per_second` is never read
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct EdgeDetection {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 18 |     logs_per_second: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     EdgeDetection::new(rec, 10).start(0);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let _ = EdgeDetection::new(rec, 10).start(0);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8m 29s
[INFO] running `Command { std: "docker" "inspect" "8dde3f5b359d4b27d8dd98e25d03aa69faa50431df77fcb35dd405c4288e9eb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dde3f5b359d4b27d8dd98e25d03aa69faa50431df77fcb35dd405c4288e9eb0", kill_on_drop: false }`
[INFO] [stdout] 8dde3f5b359d4b27d8dd98e25d03aa69faa50431df77fcb35dd405c4288e9eb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bdc1fd2759e74ca0fc58a1a4b78e86288d34988f77497a15e095b2b3d18f35ea
[INFO] running `Command { std: "docker" "start" "-a" "bdc1fd2759e74ca0fc58a1a4b78e86288d34988f77497a15e095b2b3d18f35ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling edge_detection v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `fs` and `time::Duration`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs, time::Duration};
[INFO] [stdout]   |           ^^  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `imageproc::image::GrayImage`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use imageproc::image::GrayImage;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rerun::external::image::ImageBuffer`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rerun::external::image::ImageBuffer;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EncodedImage` and `ImageFormat`
[INFO] [stdout]  --> src/main.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rerun::{EncodedImage, Image, ImageFormat, RecordingStream};
[INFO] [stdout]   |             ^^^^^^^^^^^^         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `v4l::FourCC`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use v4l::FourCC;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `meta`
[INFO] [stdout]   --> src/main.rs:35:28
[INFO] [stdout]    |
[INFO] [stdout] 35 |         while let Ok((buf, meta)) = stream.next() {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `logs_per_second` is never read
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct EdgeDetection {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 18 |     logs_per_second: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     EdgeDetection::new(rec, 10).start(0);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let _ = EdgeDetection::new(rec, 10).start(0);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.89s
[INFO] running `Command { std: "docker" "inspect" "bdc1fd2759e74ca0fc58a1a4b78e86288d34988f77497a15e095b2b3d18f35ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdc1fd2759e74ca0fc58a1a4b78e86288d34988f77497a15e095b2b3d18f35ea", kill_on_drop: false }`
[INFO] [stdout] bdc1fd2759e74ca0fc58a1a4b78e86288d34988f77497a15e095b2b3d18f35ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e9c4e16ef7486262eaa2942fe91eeceac7e96a774af118686bcae499aaf1a212
[INFO] running `Command { std: "docker" "start" "-a" "e9c4e16ef7486262eaa2942fe91eeceac7e96a774af118686bcae499aaf1a212", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `fs` and `time::Duration`
[INFO] [stderr]  --> src/main.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{fs, time::Duration};
[INFO] [stderr]   |           ^^  ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `imageproc::image::GrayImage`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use imageproc::image::GrayImage;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rerun::external::image::ImageBuffer`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rerun::external::image::ImageBuffer;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `EncodedImage` and `ImageFormat`
[INFO] [stderr]  --> src/main.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rerun::{EncodedImage, Image, ImageFormat, RecordingStream};
[INFO] [stderr]   |             ^^^^^^^^^^^^         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `v4l::FourCC`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use v4l::FourCC;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `meta`
[INFO] [stderr]   --> src/main.rs:35:28
[INFO] [stderr]    |
[INFO] [stderr] 35 |         while let Ok((buf, meta)) = stream.next() {
[INFO] [stderr]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `logs_per_second` is never read
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub struct EdgeDetection {
[INFO] [stderr]    |            ------------- field in this struct
[INFO] [stderr] 18 |     logs_per_second: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     EdgeDetection::new(rec, 10).start(0);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let _ = EdgeDetection::new(rec, 10).start(0);
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `edge_detection` (bin "edge_detection" test) generated 8 warnings (run `cargo fix --bin "edge_detection" -p edge_detection --tests` to apply 6 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.96s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/edge_detection-aa25a15a5e67a002)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e9c4e16ef7486262eaa2942fe91eeceac7e96a774af118686bcae499aaf1a212", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9c4e16ef7486262eaa2942fe91eeceac7e96a774af118686bcae499aaf1a212", kill_on_drop: false }`
[INFO] [stdout] e9c4e16ef7486262eaa2942fe91eeceac7e96a774af118686bcae499aaf1a212
