[INFO] cloning repository https://github.com/eewnshit/kern
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eewnshit/kern" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feewnshit%2Fkern", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feewnshit%2Fkern'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 94cfade49a63ce563f6d0a654c59789f00d2e8de
[INFO] testing eewnshit/kern against 1.90.0 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feewnshit%2Fkern" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/eewnshit/kern
[INFO] finished tweaking git repo https://github.com/eewnshit/kern
[INFO] tweaked toml for git repo https://github.com/eewnshit/kern written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/eewnshit/kern on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/eewnshit/kern 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "abc948f089b596131cb52b36cf4c40dce752040367b2b9cd202f9e43ba88ce63", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `context::structure::KTable`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use context::structure::KTable;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::Cow`
[INFO] [stdout]  --> src/graphics/window.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::Cow, time::{Duration, Instant}};
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LogLevel`, `Logger`, `graphics::geometry::square::KSquare`, and `self`
[INFO] [stdout]  --> src/graphics/window.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::{graphics::geometry::square::KSquare, logger::{self, LogLevel, Logger}};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^           ^^^^  ^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::PhysicalObject`
[INFO] [stdout]  --> src/graphics/geometry/square.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::PhysicalObject;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ibo` is never read
[INFO] [stdout]   --> src/graphics/geometry/square.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct KSquare {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     ibo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_colliding` is never used
[INFO] [stdout]    --> src/graphics/geometry/square.rs:133:8
[INFO] [stdout]     |
[INFO] [stdout]  20 | impl KSquare {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 133 |     fn is_colliding(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `vbo` and `ibo` are never read
[INFO] [stdout]   --> src/graphics/geometry/line.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout]  4 | pub struct KLine {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 11 |     vbo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 12 |     ibo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `vbo` and `ibo` are never read
[INFO] [stdout]   --> src/graphics/geometry/image.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout]  5 | pub struct KImage {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     vbo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 13 |     ibo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `DynamicImage::flipv` that must be used
[INFO] [stdout]   --> src/graphics/geometry/image.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         img.flipv();
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let _ = img.flipv();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 11s
[INFO] running `Command { std: "docker" "inspect" "e000ccfbd7c1b305cdfcdc3f7d8875132c360888b97be1c2a94f98e9647f9f14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e000ccfbd7c1b305cdfcdc3f7d8875132c360888b97be1c2a94f98e9647f9f14", kill_on_drop: false }`
[INFO] [stdout] e000ccfbd7c1b305cdfcdc3f7d8875132c360888b97be1c2a94f98e9647f9f14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba8d8ee9b6d0febc2454d1ecd7055ca53dc72085bca0a50dfd24e02b24f8ceb3
[INFO] running `Command { std: "docker" "start" "-a" "ba8d8ee9b6d0febc2454d1ecd7055ca53dc72085bca0a50dfd24e02b24f8ceb3", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `context::structure::KTable`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use context::structure::KTable;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::Cow`
[INFO] [stdout]  --> src/graphics/window.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::Cow, time::{Duration, Instant}};
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LogLevel`, `Logger`, `graphics::geometry::square::KSquare`, and `self`
[INFO] [stdout]  --> src/graphics/window.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::{graphics::geometry::square::KSquare, logger::{self, LogLevel, Logger}};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^           ^^^^  ^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::PhysicalObject`
[INFO] [stdout]  --> src/graphics/geometry/square.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::PhysicalObject;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ibo` is never read
[INFO] [stdout]   --> src/graphics/geometry/square.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct KSquare {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     ibo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_colliding` is never used
[INFO] [stdout]    --> src/graphics/geometry/square.rs:133:8
[INFO] [stdout]     |
[INFO] [stdout]  20 | impl KSquare {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 133 |     fn is_colliding(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `vbo` and `ibo` are never read
[INFO] [stdout]   --> src/graphics/geometry/line.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout]  4 | pub struct KLine {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 11 |     vbo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 12 |     ibo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `vbo` and `ibo` are never read
[INFO] [stdout]   --> src/graphics/geometry/image.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout]  5 | pub struct KImage {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     vbo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 13 |     ibo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `DynamicImage::flipv` that must be used
[INFO] [stdout]   --> src/graphics/geometry/image.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         img.flipv();
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let _ = img.flipv();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling kern v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `context::structure::KTable`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use context::structure::KTable;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::Cow`
[INFO] [stdout]  --> src/graphics/window.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::Cow, time::{Duration, Instant}};
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LogLevel`, `Logger`, `graphics::geometry::square::KSquare`, and `self`
[INFO] [stdout]  --> src/graphics/window.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::{graphics::geometry::square::KSquare, logger::{self, LogLevel, Logger}};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^           ^^^^  ^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::PhysicalObject`
[INFO] [stdout]  --> src/graphics/geometry/square.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::PhysicalObject;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ibo` is never read
[INFO] [stdout]   --> src/graphics/geometry/square.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct KSquare {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     ibo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_colliding` is never used
[INFO] [stdout]    --> src/graphics/geometry/square.rs:133:8
[INFO] [stdout]     |
[INFO] [stdout]  20 | impl KSquare {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 133 |     fn is_colliding(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `vbo` and `ibo` are never read
[INFO] [stdout]   --> src/graphics/geometry/line.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout]  4 | pub struct KLine {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 11 |     vbo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 12 |     ibo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `vbo` and `ibo` are never read
[INFO] [stdout]   --> src/graphics/geometry/image.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout]  5 | pub struct KImage {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     vbo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 13 |     ibo: BufferObject,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `DynamicImage::flipv` that must be used
[INFO] [stdout]   --> src/graphics/geometry/image.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         img.flipv();
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let _ = img.flipv();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "ba8d8ee9b6d0febc2454d1ecd7055ca53dc72085bca0a50dfd24e02b24f8ceb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba8d8ee9b6d0febc2454d1ecd7055ca53dc72085bca0a50dfd24e02b24f8ceb3", kill_on_drop: false }`
[INFO] [stdout] ba8d8ee9b6d0febc2454d1ecd7055ca53dc72085bca0a50dfd24e02b24f8ceb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 09bfc61f4a363656216e5a27a4c35a66481d86922364213027e30c7054a31ab8
[INFO] running `Command { std: "docker" "start" "-a" "09bfc61f4a363656216e5a27a4c35a66481d86922364213027e30c7054a31ab8", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `context::structure::KTable`
[INFO] [stderr]  --> src/lib.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use context::structure::KTable;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `borrow::Cow`
[INFO] [stderr]  --> src/graphics/window.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{borrow::Cow, time::{Duration, Instant}};
[INFO] [stderr]   |           ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `LogLevel`, `Logger`, `graphics::geometry::square::KSquare`, and `self`
[INFO] [stderr]  --> src/graphics/window.rs:5:13
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::{graphics::geometry::square::KSquare, logger::{self, LogLevel, Logger}};
[INFO] [stderr]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^           ^^^^  ^^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::PhysicalObject`
[INFO] [stderr]  --> src/graphics/geometry/square.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use super::PhysicalObject;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `ibo` is never read
[INFO] [stderr]   --> src/graphics/geometry/square.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr]  7 | pub struct KSquare {
[INFO] [stderr]    |            ------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 14 |     ibo: BufferObject,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `is_colliding` is never used
[INFO] [stderr]    --> src/graphics/geometry/square.rs:133:8
[INFO] [stderr]     |
[INFO] [stderr]  20 | impl KSquare {
[INFO] [stderr]     | ------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 133 |     fn is_colliding(&self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `vbo` and `ibo` are never read
[INFO] [stderr]   --> src/graphics/geometry/line.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr]  4 | pub struct KLine {
[INFO] [stderr]    |            ----- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 11 |     vbo: BufferObject,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 12 |     ibo: BufferObject,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `vbo` and `ibo` are never read
[INFO] [stderr]   --> src/graphics/geometry/image.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr]  5 | pub struct KImage {
[INFO] [stderr]    |            ------ fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 12 |     vbo: BufferObject,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 13 |     ibo: BufferObject,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `DynamicImage::flipv` that must be used
[INFO] [stderr]   --> src/graphics/geometry/image.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         img.flipv();
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let _ = img.flipv();
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `kern` (lib) generated 9 warnings (run `cargo fix --lib -p kern` to apply 4 suggestions)
[INFO] [stderr] warning: `kern` (lib test) generated 9 warnings (9 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/kern-b2b13e613c0cdf49)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests kern
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "09bfc61f4a363656216e5a27a4c35a66481d86922364213027e30c7054a31ab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09bfc61f4a363656216e5a27a4c35a66481d86922364213027e30c7054a31ab8", kill_on_drop: false }`
[INFO] [stdout] 09bfc61f4a363656216e5a27a4c35a66481d86922364213027e30c7054a31ab8
