[INFO] cloning repository https://github.com/pnivlek/mulch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pnivlek/mulch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpnivlek%2Fmulch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpnivlek%2Fmulch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b2d0f2920f7c381f65a817928e6cb9d4c3a5b04
[INFO] testing pnivlek/mulch against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpnivlek%2Fmulch" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pnivlek/mulch on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pnivlek/mulch
[INFO] finished tweaking git repo https://github.com/pnivlek/mulch
[INFO] tweaked toml for git repo https://github.com/pnivlek/mulch written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/pnivlek/mulch already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 486f57c1baa147954ec2c23f9e451b9e258856874957e121820f549cb475dd67
[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" "486f57c1baa147954ec2c23f9e451b9e258856874957e121820f549cb475dd67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "486f57c1baa147954ec2c23f9e451b9e258856874957e121820f549cb475dd67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "486f57c1baa147954ec2c23f9e451b9e258856874957e121820f549cb475dd67", kill_on_drop: false }`
[INFO] [stdout] 486f57c1baa147954ec2c23f9e451b9e258856874957e121820f549cb475dd67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b41ebd00ca32a4846374d36ec1a1a8f4077220886d7efa40a2b8853596f4b64
[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" "5b41ebd00ca32a4846374d36ec1a1a8f4077220886d7efa40a2b8853596f4b64", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling sdl2 v0.34.5
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling sdl2-sys v0.34.5
[INFO] [stderr]    Compiling mulch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sdl2::render::Canvas`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use sdl2::render::Canvas;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::video::Window`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use sdl2::video::Window;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::Sdl`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use sdl2::Sdl;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `v`
[INFO] [stdout]   --> src/chip8.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     v: [u8; 16],
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i_reg`
[INFO] [stdout]   --> src/chip8.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     i_reg: u16,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pc_reg`
[INFO] [stdout]   --> src/chip8.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pc_reg: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `delay_timer`
[INFO] [stdout]   --> src/chip8.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     delay_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sound_timer`
[INFO] [stdout]   --> src/chip8.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     sound_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stack`
[INFO] [stdout]   --> src/chip8.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     stack: [u16; 16],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sp`
[INFO] [stdout]   --> src/chip8.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     sp: u16,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sdl_context`
[INFO] [stdout]  --> src/graphics.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     sdl_context: Sdl,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graphics.rs:37:21
[INFO] [stdout]    |
[INFO] [stdout] 37 | /                     self.canvas.draw_point(sdl2::rect::Point::new(
[INFO] [stdout] 38 | |                         x.try_into().unwrap(),
[INFO] [stdout] 39 | |                         y.try_into().unwrap(),
[INFO] [stdout] 40 | |                     ));
[INFO] [stdout]    | |_______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.83s
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5b41ebd00ca32a4846374d36ec1a1a8f4077220886d7efa40a2b8853596f4b64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b41ebd00ca32a4846374d36ec1a1a8f4077220886d7efa40a2b8853596f4b64", kill_on_drop: false }`
[INFO] [stdout] 5b41ebd00ca32a4846374d36ec1a1a8f4077220886d7efa40a2b8853596f4b64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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] ee0222150257d20ee5fbf2e9acc5a299a87dc5e81052fa0752f38dfcdf3ace20
[INFO] running `Command { std: "docker" "start" "-a" "ee0222150257d20ee5fbf2e9acc5a299a87dc5e81052fa0752f38dfcdf3ace20", kill_on_drop: false }`
[INFO] [stderr]    Compiling mulch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sdl2::render::Canvas`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use sdl2::render::Canvas;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::video::Window`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use sdl2::video::Window;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::Sdl`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use sdl2::Sdl;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `v`
[INFO] [stdout]   --> src/chip8.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     v: [u8; 16],
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i_reg`
[INFO] [stdout]   --> src/chip8.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     i_reg: u16,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pc_reg`
[INFO] [stdout]   --> src/chip8.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pc_reg: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `delay_timer`
[INFO] [stdout]   --> src/chip8.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     delay_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sound_timer`
[INFO] [stdout]   --> src/chip8.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     sound_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stack`
[INFO] [stdout]   --> src/chip8.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     stack: [u16; 16],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sp`
[INFO] [stdout]   --> src/chip8.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     sp: u16,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sdl_context`
[INFO] [stdout]  --> src/graphics.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     sdl_context: Sdl,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graphics.rs:37:21
[INFO] [stdout]    |
[INFO] [stdout] 37 | /                     self.canvas.draw_point(sdl2::rect::Point::new(
[INFO] [stdout] 38 | |                         x.try_into().unwrap(),
[INFO] [stdout] 39 | |                         y.try_into().unwrap(),
[INFO] [stdout] 40 | |                     ));
[INFO] [stdout]    | |_______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.95s
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ee0222150257d20ee5fbf2e9acc5a299a87dc5e81052fa0752f38dfcdf3ace20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee0222150257d20ee5fbf2e9acc5a299a87dc5e81052fa0752f38dfcdf3ace20", kill_on_drop: false }`
[INFO] [stdout] ee0222150257d20ee5fbf2e9acc5a299a87dc5e81052fa0752f38dfcdf3ace20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bdf6f3c4e906db2e362455c8016994fe9c7fc86e94a218f90dbf180550eea2c3
[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" "bdf6f3c4e906db2e362455c8016994fe9c7fc86e94a218f90dbf180550eea2c3", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `sdl2::render::Canvas`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use sdl2::render::Canvas;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::video::Window`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use sdl2::video::Window;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::Sdl`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use sdl2::Sdl;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `v`
[INFO] [stderr]   --> src/chip8.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     v: [u8; 16],
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `i_reg`
[INFO] [stderr]   --> src/chip8.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     i_reg: u16,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `pc_reg`
[INFO] [stderr]   --> src/chip8.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pc_reg: u16,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `delay_timer`
[INFO] [stderr]   --> src/chip8.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     delay_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `sound_timer`
[INFO] [stderr]   --> src/chip8.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     sound_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `stack`
[INFO] [stderr]   --> src/chip8.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     stack: [u16; 16],
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `sp`
[INFO] [stderr]   --> src/chip8.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     sp: u16,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `sdl_context`
[INFO] [stderr]  --> src/graphics.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     sdl_context: Sdl,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/graphics.rs:37:21
[INFO] [stderr]    |
[INFO] [stderr] 37 | /                     self.canvas.draw_point(sdl2::rect::Point::new(
[INFO] [stderr] 38 | |                         x.try_into().unwrap(),
[INFO] [stderr] 39 | |                         y.try_into().unwrap(),
[INFO] [stderr] 40 | |                     ));
[INFO] [stderr]    | |_______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `mulch` (bin "mulch" test) generated 12 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mulch-48787a3226355592)
[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" "bdf6f3c4e906db2e362455c8016994fe9c7fc86e94a218f90dbf180550eea2c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdf6f3c4e906db2e362455c8016994fe9c7fc86e94a218f90dbf180550eea2c3", kill_on_drop: false }`
[INFO] [stdout] bdf6f3c4e906db2e362455c8016994fe9c7fc86e94a218f90dbf180550eea2c3