[INFO] cloning repository https://github.com/sm-Fifteen/steam-controller-tracker-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sm-Fifteen/steam-controller-tracker-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsm-Fifteen%2Fsteam-controller-tracker-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsm-Fifteen%2Fsteam-controller-tracker-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3998c4c08b86a6f61e17cc76613af7622ad6a70c
[INFO] checking sm-Fifteen/steam-controller-tracker-rs against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsm-Fifteen%2Fsteam-controller-tracker-rs" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sm-Fifteen/steam-controller-tracker-rs on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sm-Fifteen/steam-controller-tracker-rs
[INFO] finished tweaking git repo https://github.com/sm-Fifteen/steam-controller-tracker-rs
[INFO] tweaked toml for git repo https://github.com/sm-Fifteen/steam-controller-tracker-rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/sm-Fifteen/steam-controller-tracker-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded openmpt-sys v0.1.0
[INFO] [stderr]   Downloaded openmpt v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", 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] b95c83c913baee4e56fbdfb8b7933604d6fadcc7cd8a8ab5167d6b8aaa1a885e
[INFO] running `Command { std: "docker" "start" "-a" "b95c83c913baee4e56fbdfb8b7933604d6fadcc7cd8a8ab5167d6b8aaa1a885e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b95c83c913baee4e56fbdfb8b7933604d6fadcc7cd8a8ab5167d6b8aaa1a885e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b95c83c913baee4e56fbdfb8b7933604d6fadcc7cd8a8ab5167d6b8aaa1a885e", kill_on_drop: false }`
[INFO] [stdout] b95c83c913baee4e56fbdfb8b7933604d6fadcc7cd8a8ab5167d6b8aaa1a885e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--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] c53d59a693245258b6a6878d03038298bd75f557f68d39d9f3d087bfdb837f3b
[INFO] running `Command { std: "docker" "start" "-a" "c53d59a693245258b6a6878d03038298bd75f557f68d39d9f3d087bfdb837f3b", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.30
[INFO] [stderr]    Compiling openmpt-sys v0.1.0
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking unicode-segmentation v1.2.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking crossbeam v0.3.0
[INFO] [stderr]    Compiling libusb-sys v0.2.3
[INFO] [stderr]     Checking bit-set v0.2.0
[INFO] [stderr]     Checking openmpt v0.3.1
[INFO] [stderr]     Checking term_size v0.3.0
[INFO] [stderr]     Checking atty v0.2.2
[INFO] [stderr]     Checking textwrap v0.7.0
[INFO] [stderr]     Checking libusb v0.3.0
[INFO] [stderr]     Checking clap v2.26.0
[INFO] [stderr]     Checking steam-controller-tracker-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Cell`, `Pattern`
[INFO] [stdout]  --> src/module_parser.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use openmpt::module::iteration::{Pattern, Row, Cell};
[INFO] [stdout]   |                                  ^^^^^^^       ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Note`
[INFO] [stdout]  --> src/routines.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use music::{Note, ChannelInstruction};
[INFO] [stdout]   |             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libusb`
[INFO] [stdout]   --> src/main.rs:58:6
[INFO] [stdout]    |
[INFO] [stdout] 58 |     use libusb;
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cell`, `Pattern`
[INFO] [stdout]  --> src/module_parser.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use openmpt::module::iteration::{Pattern, Row, Cell};
[INFO] [stdout]   |                                  ^^^^^^^       ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `device_io`
[INFO] [stdout]   --> src/main.rs:59:21
[INFO] [stdout]    |
[INFO] [stdout] 59 |     use super::{music, device_io};
[INFO] [stdout]    |                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Note`
[INFO] [stdout]  --> src/routines.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use music::{Note, ChannelInstruction};
[INFO] [stdout]   |             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/config.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 |             Err(e) => return Err(e.description().to_owned()),
[INFO] [stdout]    |                                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/config.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 |             Err(e) => return Err(e.description().to_owned()),
[INFO] [stdout]    |                                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/device_io.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut iter_list = libusb_context.devices().unwrap();
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |             let mut dm = DeviceManager::new(&scope, &mut libusb_context);
[INFO] [stdout]    |                 ----^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/device_io.rs:56:7
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let mut iter = iter_list.iter();
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/device_io.rs:57:7
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let mut devices = Vec::<Device<'a>>::new();
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:76:7
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let mut note = music::Note::new(96);
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:77:7
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut instr = music::Instrument::PulseWave(1, 1);
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/device_io.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut iter_list = libusb_context.devices().unwrap();
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/device_io.rs:56:7
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let mut iter = iter_list.iter();
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/device_io.rs:57:7
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let mut devices = Vec::<Device<'a>>::new();
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/module_parser.rs:45:7
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut state = &mut chan_state[idx..idx+1];
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/playback_timer.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 let mut state = state_chunks.next().expect("State and device lists do not match");
[INFO] [stdout]    |                     ----^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `libusb_context`
[INFO] [stdout]   --> src/device_io.rs:15:2
[INFO] [stdout]    |
[INFO] [stdout] 15 |     libusb_context: &'a Context,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/module_parser.rs:45:7
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut state = &mut chan_state[idx..idx+1];
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `devices`
[INFO] [stdout]   --> src/device_io.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 16 |     devices: Vec<Device<'a>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `num_channels`
[INFO] [stdout]   --> src/module_parser.rs:10:2
[INFO] [stdout]    |
[INFO] [stdout] 10 |     num_channels: i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/playback_timer.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 let mut state = state_chunks.next().expect("State and device lists do not match");
[INFO] [stdout]    |                     ----^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `libusb_context`
[INFO] [stdout]   --> src/device_io.rs:15:2
[INFO] [stdout]    |
[INFO] [stdout] 15 |     libusb_context: &'a Context,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `devices`
[INFO] [stdout]   --> src/device_io.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 16 |     devices: Vec<Device<'a>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `num_channels`
[INFO] [stdout]   --> src/module_parser.rs:10:2
[INFO] [stdout]    |
[INFO] [stdout] 10 |     num_channels: i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:31:3
[INFO] [stdout]    |
[INFO] [stdout] 31 |         buf.write_u8(0x8f); // Feedback data
[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] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:31:3
[INFO] [stdout]    |
[INFO] [stdout] 31 |         buf.write_u8(0x8f); // Feedback data
[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] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:32:3
[INFO] [stdout]    |
[INFO] [stdout] 32 |         buf.write_u8(0x08); // Length : 8 bytes
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:32:3
[INFO] [stdout]    |
[INFO] [stdout] 32 |         buf.write_u8(0x08); // Length : 8 bytes
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:33:3
[INFO] [stdout]    |
[INFO] [stdout] 33 |         buf.write_u8(self.haptic_channel);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:33:3
[INFO] [stdout]    |
[INFO] [stdout] 33 |         buf.write_u8(self.haptic_channel);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:34:3
[INFO] [stdout]    |
[INFO] [stdout] 34 |         buf.write_u16::<LittleEndian>(self.hi_period);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:34:3
[INFO] [stdout]    |
[INFO] [stdout] 34 |         buf.write_u16::<LittleEndian>(self.hi_period);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:35:3
[INFO] [stdout]    |
[INFO] [stdout] 35 |         buf.write_u16::<LittleEndian>(self.lo_period);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:35:3
[INFO] [stdout]    |
[INFO] [stdout] 35 |         buf.write_u16::<LittleEndian>(self.lo_period);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:36:3
[INFO] [stdout]    |
[INFO] [stdout] 36 |         buf.write_u16::<LittleEndian>(self.cycle_count);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:36:3
[INFO] [stdout]    |
[INFO] [stdout] 36 |         buf.write_u16::<LittleEndian>(self.cycle_count);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:37:3
[INFO] [stdout]    |
[INFO] [stdout] 37 |         buf.write_u8(self.priority);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:37:3
[INFO] [stdout]    |
[INFO] [stdout] 37 |         buf.write_u8(self.priority);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |                 handle.detach_kernel_driver(2);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |                 handle.detach_kernel_driver(2);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:80:7
[INFO] [stdout]    |
[INFO] [stdout] 80 |                         Self::send_control(handle_ref, control);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/device_io.rs:80:7
[INFO] [stdout]    |
[INFO] [stdout] 80 |                         Self::send_control(handle_ref, control);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/playback_timer.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | / ...                   match instruction {
[INFO] [stdout] 65 | | ...                       ChannelInstruction::Stop => device_manager.play_raw(channel_idx, 0, 0, 0),
[INFO] [stdout] 66 | | ...                       ChannelInstruction::Long(note) => device_manager.play_note(channel_idx, &note, &instrument, None),
[INFO] [stdout] 67 | | ...                       ChannelInstruction::Short(note) => device_manager.play_note(channel_idx, &note, &instrument, Some(tick_duration)),
[INFO] [stdout] 68 | | ...                   };
[INFO] [stdout]    | |________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/playback_timer.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | / ...                   match instruction {
[INFO] [stdout] 65 | | ...                       ChannelInstruction::Stop => device_manager.play_raw(channel_idx, 0, 0, 0),
[INFO] [stdout] 66 | | ...                       ChannelInstruction::Long(note) => device_manager.play_note(channel_idx, &note, &instrument, None),
[INFO] [stdout] 67 | | ...                       ChannelInstruction::Short(note) => device_manager.play_note(channel_idx, &note, &instrument, Some(tick_duration)),
[INFO] [stdout] 68 | | ...                   };
[INFO] [stdout]    | |________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/playback_timer.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | ...                   device_manager.play_note(channel_idx, &note, &instrument, None);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/playback_timer.rs:75:7
[INFO] [stdout]    |
[INFO] [stdout] 75 |                         tick_timer_thread.join();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/playback_timer.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | ...                   device_manager.play_note(channel_idx, &note, &instrument, None);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/playback_timer.rs:81:3
[INFO] [stdout]    |
[INFO] [stdout] 81 |         row_timer_thread.join();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/playback_timer.rs:75:7
[INFO] [stdout]    |
[INFO] [stdout] 75 |                         tick_timer_thread.join();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/playback_timer.rs:81:3
[INFO] [stdout]    |
[INFO] [stdout] 81 |         row_timer_thread.join();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.64s
[INFO] running `Command { std: "docker" "inspect" "c53d59a693245258b6a6878d03038298bd75f557f68d39d9f3d087bfdb837f3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c53d59a693245258b6a6878d03038298bd75f557f68d39d9f3d087bfdb837f3b", kill_on_drop: false }`
[INFO] [stdout] c53d59a693245258b6a6878d03038298bd75f557f68d39d9f3d087bfdb837f3b