[INFO] cloning repository https://github.com/DarthGeek01/lds01-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DarthGeek01/lds01-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarthGeek01%2Flds01-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarthGeek01%2Flds01-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49b497a9117750c4423fb75bae63be3add4bf5e4
[INFO] checking DarthGeek01/lds01-rs against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarthGeek01%2Flds01-rs" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/DarthGeek01/lds01-rs
[INFO] finished tweaking git repo https://github.com/DarthGeek01/lds01-rs
[INFO] tweaked toml for git repo https://github.com/DarthGeek01/lds01-rs written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/DarthGeek01/lds01-rs on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/DarthGeek01/lds01-rs 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4fde76c269ac9e359dcb60244ad63d98ca03edf88c8f703f79b2d2a7ceecc422
[INFO] running `Command { std: "docker" "start" "-a" "4fde76c269ac9e359dcb60244ad63d98ca03edf88c8f703f79b2d2a7ceecc422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fde76c269ac9e359dcb60244ad63d98ca03edf88c8f703f79b2d2a7ceecc422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fde76c269ac9e359dcb60244ad63d98ca03edf88c8f703f79b2d2a7ceecc422", kill_on_drop: false }`
[INFO] [stdout] 4fde76c269ac9e359dcb60244ad63d98ca03edf88c8f703f79b2d2a7ceecc422
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00a05f8fd57d54b58e3c18b2a7d18cbe0beeeff9b9b6de266fb2588c856bd257
[INFO] running `Command { std: "docker" "start" "-a" "00a05f8fd57d54b58e3c18b2a7d18cbe0beeeff9b9b6de266fb2588c856bd257", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling sdl2 v0.34.3
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling sdl2-sys v0.34.3
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking serialport v4.0.0
[INFO] [stderr]     Checking ctrlc v3.1.7
[INFO] [stderr]     Checking rust_lidar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TTYPort`
[INFO] [stdout]  --> src/lidar_scanner.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serialport::{TTYPort, SerialPort};
[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: `std::io::Error`
[INFO] [stdout]  --> src/lidar_scanner.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ops::Mul`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use core::ops::Mul;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lidar_scanner.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut motor_speed = 0_u32;
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/lidar_scanner.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut rpms = 0_u16;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `motor_speed`
[INFO] [stdout]   --> src/lidar_scanner.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut motor_speed = 0_u32;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_motor_speed`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rpms`
[INFO] [stdout]   --> src/lidar_scanner.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut rpms = 0_u16;
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rpms`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `index` is never read
[INFO] [stdout]   --> src/lidar_scanner.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let mut index = 0_usize;
[INFO] [stdout]    |                         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TTYPort`
[INFO] [stdout]  --> src/lidar_scanner.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serialport::{TTYPort, SerialPort};
[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: `std::io::Error`
[INFO] [stdout]  --> src/lidar_scanner.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ops::Mul`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use core::ops::Mul;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `angular_min`, `angular_max`, `radial_min`, `radial_max`, `motor_speed`, and `baud_rate` are never read
[INFO] [stdout]   --> src/lidar_scanner.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout]  5 | pub struct LidarScanner {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout]  6 |     angular_min: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]  7 |     angular_max: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]  8 |     radial_min: f64,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]  9 |     radial_max: f64,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 10 |     motor_speed: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 11 |
[INFO] [stdout] 12 |     baud_rate: u32,
[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:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         canvas.draw_rects(&pts[..]);
[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] 59 |         let _ = canvas.draw_rects(&pts[..]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         canvas.draw_rect(sdl2::rect::Rect::new(mid, mid, 10, 10));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let _ = canvas.draw_rect(sdl2::rect::Rect::new(mid, mid, 10, 10));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lidar_scanner.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut motor_speed = 0_u32;
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/lidar_scanner.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut rpms = 0_u16;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `motor_speed`
[INFO] [stdout]   --> src/lidar_scanner.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut motor_speed = 0_u32;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_motor_speed`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rpms`
[INFO] [stdout]   --> src/lidar_scanner.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut rpms = 0_u16;
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rpms`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `index` is never read
[INFO] [stdout]   --> src/lidar_scanner.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let mut index = 0_usize;
[INFO] [stdout]    |                         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lidar_scanner.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |         port.write("b".as_bytes());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let _ = port.write("b".as_bytes());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lidar_scanner.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         self.serial_port.write("e".as_bytes());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let _ = self.serial_port.write("e".as_bytes());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lidar_scanner.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |             self.serial_port.read_exact(&mut self.raw_bytes[0..1]);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 60 |             let _ = self.serial_port.read_exact(&mut self.raw_bytes[0..1]);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lidar_scanner.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 self.serial_port.read_exact(&mut self.raw_bytes[1..2]);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 let _ = self.serial_port.read_exact(&mut self.raw_bytes[1..2]);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/lidar_scanner.rs:69:36
[INFO] [stdout]    |
[INFO] [stdout] 69 | ...                   panic!(e)
[INFO] [stdout]    |                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 69 |                             panic!("{}", e)
[INFO] [stdout]    |                                    +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 69 -                             panic!(e)
[INFO] [stdout] 69 +                             std::panic::panic_any(e)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `angular_min`, `angular_max`, `radial_min`, `radial_max`, `motor_speed`, and `baud_rate` are never read
[INFO] [stdout]   --> src/lidar_scanner.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout]  5 | pub struct LidarScanner {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout]  6 |     angular_min: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]  7 |     angular_max: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]  8 |     radial_min: f64,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]  9 |     radial_max: f64,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 10 |     motor_speed: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 11 |
[INFO] [stdout] 12 |     baud_rate: u32,
[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:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         canvas.draw_rects(&pts[..]);
[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] 59 |         let _ = canvas.draw_rects(&pts[..]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         canvas.draw_rect(sdl2::rect::Rect::new(mid, mid, 10, 10));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let _ = canvas.draw_rect(sdl2::rect::Rect::new(mid, mid, 10, 10));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lidar_scanner.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |         port.write("b".as_bytes());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let _ = port.write("b".as_bytes());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lidar_scanner.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         self.serial_port.write("e".as_bytes());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let _ = self.serial_port.write("e".as_bytes());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lidar_scanner.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |             self.serial_port.read_exact(&mut self.raw_bytes[0..1]);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 60 |             let _ = self.serial_port.read_exact(&mut self.raw_bytes[0..1]);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lidar_scanner.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 self.serial_port.read_exact(&mut self.raw_bytes[1..2]);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 let _ = self.serial_port.read_exact(&mut self.raw_bytes[1..2]);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/lidar_scanner.rs:69:36
[INFO] [stdout]    |
[INFO] [stdout] 69 | ...                   panic!(e)
[INFO] [stdout]    |                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 69 |                             panic!("{}", e)
[INFO] [stdout]    |                                    +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 69 -                             panic!(e)
[INFO] [stdout] 69 +                             std::panic::panic_any(e)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.57s
[INFO] running `Command { std: "docker" "inspect" "00a05f8fd57d54b58e3c18b2a7d18cbe0beeeff9b9b6de266fb2588c856bd257", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00a05f8fd57d54b58e3c18b2a7d18cbe0beeeff9b9b6de266fb2588c856bd257", kill_on_drop: false }`
[INFO] [stdout] 00a05f8fd57d54b58e3c18b2a7d18cbe0beeeff9b9b6de266fb2588c856bd257
