[INFO] cloning repository https://github.com/RodrigoLeiteF/goldleaf-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RodrigoLeiteF/goldleaf-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRodrigoLeiteF%2Fgoldleaf-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRodrigoLeiteF%2Fgoldleaf-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 08c8c4bdb6d52d5acc64cf5e62483293a224dc8e
[INFO] checking RodrigoLeiteF/goldleaf-rust against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRodrigoLeiteF%2Fgoldleaf-rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/RodrigoLeiteF/goldleaf-rust
[INFO] finished tweaking git repo https://github.com/RodrigoLeiteF/goldleaf-rust
[INFO] tweaked toml for git repo https://github.com/RodrigoLeiteF/goldleaf-rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/RodrigoLeiteF/goldleaf-rust on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/RodrigoLeiteF/goldleaf-rust 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2dbc3b27df876d8565995c8e9efe07c20672098c7022ce8c6a45f40d1ba75d97
[INFO] running `Command { std: "docker" "start" "-a" "2dbc3b27df876d8565995c8e9efe07c20672098c7022ce8c6a45f40d1ba75d97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2dbc3b27df876d8565995c8e9efe07c20672098c7022ce8c6a45f40d1ba75d97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dbc3b27df876d8565995c8e9efe07c20672098c7022ce8c6a45f40d1ba75d97", kill_on_drop: false }`
[INFO] [stdout] 2dbc3b27df876d8565995c8e9efe07c20672098c7022ce8c6a45f40d1ba75d97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe6348f57899f9a7fd2355bea49ac3714b09f72a4e7e9d43c3f3b4140a87a9bb
[INFO] running `Command { std: "docker" "start" "-a" "fe6348f57899f9a7fd2355bea49ac3714b09f72a4e7e9d43c3f3b4140a87a9bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling getrandom v0.1.13
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[INFO] [stderr]    Compiling doc-comment v0.3.1
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[INFO] [stderr]     Checking remove_dir_all v0.5.2
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[INFO] [stderr]    Compiling libusb1-sys v0.3.3
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rusb v0.5.3
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[INFO] [stderr]     Checking dialoguer v0.5.0
[INFO] [stderr]    Compiling toml v0.5.5
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[INFO] [stderr]    Compiling num_enum_derive v0.4.2
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[INFO] [stderr]     Checking goldcrab v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `process`, `slice`, and `time::Duration`
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{ process, slice, time::Duration, error::Error };
[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 imports: `DeviceHandle`, `Device`, and `GlobalContext`
[INFO] [stdout]  --> src/main.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rusb::{ Device, GlobalContext, DeviceHandle };
[INFO] [stdout]   |             ^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::Level`
[INFO] [stdout]  --> src/command.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use log::Level;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SeekFrom` and `Seek`
[INFO] [stdout]  --> src/command.rs:4:29
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{Cursor, Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |                             ^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::Level`
[INFO] [stdout]  --> src/usb.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use log::Level;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `process`, `slice`, and `time::Duration`
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{ process, slice, time::Duration, error::Error };
[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 imports: `DeviceHandle`, `Device`, and `GlobalContext`
[INFO] [stdout]  --> src/main.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rusb::{ Device, GlobalContext, DeviceHandle };
[INFO] [stdout]   |             ^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::Level`
[INFO] [stdout]  --> src/command.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use log::Level;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SeekFrom` and `Seek`
[INFO] [stdout]  --> src/command.rs:4:29
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{Cursor, Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |                             ^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::Level`
[INFO] [stdout]  --> src/usb.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use log::Level;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ProcessExt`
[INFO] [stdout]  --> src/command.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use sysinfo::{ProcessExt, SystemExt, DiskExt};
[INFO] [stdout]   |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/command.rs:4:45
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{Cursor, Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |                                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ProcessExt`
[INFO] [stdout]  --> src/command.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use sysinfo::{ProcessExt, SystemExt, DiskExt};
[INFO] [stdout]   |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/command.rs:4:45
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{Cursor, Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |                                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/command.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let mut system: sysinfo::System = sysinfo::System::new();
[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/command.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let mut system: sysinfo::System = sysinfo::System::new();
[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: unused variable: `b`
[INFO] [stdout]    --> src/command.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |         for b in 0..=length {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/command.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |         for b in 0..=length {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Endpoint` is never constructed
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Endpoint {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `device`, `descriptor`, `product`, and `serial_number` are never read
[INFO] [stdout]   --> src/usb.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Interface {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 12 |     device: Device<GlobalContext>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 13 |     descriptor: DeviceDescriptor,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 14 |     handle: DeviceHandle<GlobalContext>,
[INFO] [stdout] 15 |     product: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 16 |     serial_number: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Endpoint` is never constructed
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Endpoint {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `device`, `descriptor`, `product`, and `serial_number` are never read
[INFO] [stdout]   --> src/usb.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Interface {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 12 |     device: Device<GlobalContext>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 13 |     descriptor: DeviceDescriptor,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 14 |     handle: DeviceHandle<GlobalContext>,
[INFO] [stdout] 15 |     product: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 16 |     serial_number: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/command.rs:32:46
[INFO] [stdout]    |
[INFO] [stdout] 32 |             None => self.magic_number = Some(i32::read(&mut self.input_cursor).try_into().unwrap()),
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/command.rs:32:46
[INFO] [stdout]    |
[INFO] [stdout] 32 |             None => self.magic_number = Some(i32::read(&mut self.input_cursor).try_into().unwrap()),
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `GetDriveCount` should have a snake case name
[INFO] [stdout]    --> src/command.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 |     fn GetDriveCount(&self, command: &mut Command) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^ help: convert the identifier to snake case: `get_drive_count`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `GetDriveInfo` should have a snake case name
[INFO] [stdout]    --> src/command.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn GetDriveInfo(&self, command: &mut Command) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^ help: convert the identifier to snake case: `get_drive_info`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `GetDriveCount` should have a snake case name
[INFO] [stdout]    --> src/command.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 |     fn GetDriveCount(&self, command: &mut Command) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^ help: convert the identifier to snake case: `get_drive_count`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `GetDriveInfo` should have a snake case name
[INFO] [stdout]    --> src/command.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn GetDriveInfo(&self, command: &mut Command) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^ help: convert the identifier to snake case: `get_drive_info`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/command.rs:174:25
[INFO] [stdout]     |
[INFO] [stdout] 174 |         cursor.write_u8(byte.try_into().unwrap())
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/command.rs:184:42
[INFO] [stdout]     |
[INFO] [stdout] 184 |         cursor.write_i32::<LittleEndian>(byte.try_into().unwrap())
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i16, Infallible>
[INFO] [stdout]    --> src/command.rs:194:42
[INFO] [stdout]     |
[INFO] [stdout] 194 |         cursor.write_i16::<LittleEndian>(byte.try_into().unwrap())
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/command.rs:174:25
[INFO] [stdout]     |
[INFO] [stdout] 174 |         cursor.write_u8(byte.try_into().unwrap())
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/command.rs:184:42
[INFO] [stdout]     |
[INFO] [stdout] 184 |         cursor.write_i32::<LittleEndian>(byte.try_into().unwrap())
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i16, Infallible>
[INFO] [stdout]    --> src/command.rs:194:42
[INFO] [stdout]     |
[INFO] [stdout] 194 |         cursor.write_i16::<LittleEndian>(byte.try_into().unwrap())
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/usb.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         &handle.set_active_configuration(1)?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[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] 31 |         let _ = &handle.set_active_configuration(1)?;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/usb.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         &handle.claim_interface(INTERFACE)?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let _ = &handle.claim_interface(INTERFACE)?;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/usb.rs:67:47
[INFO] [stdout]    |
[INFO] [stdout] 67 |                 let response = command.handle(command.id.unwrap().try_into().unwrap()).unwrap();
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/usb.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         &handle.set_active_configuration(1)?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[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] 31 |         let _ = &handle.set_active_configuration(1)?;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/usb.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         &handle.claim_interface(INTERFACE)?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let _ = &handle.claim_interface(INTERFACE)?;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/usb.rs:67:47
[INFO] [stdout]    |
[INFO] [stdout] 67 |                 let response = command.handle(command.id.unwrap().try_into().unwrap()).unwrap();
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `goldcrab` (bin "goldcrab") due to 5 previous errors; 15 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `goldcrab` (bin "goldcrab" test) due to 5 previous errors; 15 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "fe6348f57899f9a7fd2355bea49ac3714b09f72a4e7e9d43c3f3b4140a87a9bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe6348f57899f9a7fd2355bea49ac3714b09f72a4e7e9d43c3f3b4140a87a9bb", kill_on_drop: false }`
[INFO] [stdout] fe6348f57899f9a7fd2355bea49ac3714b09f72a4e7e9d43c3f3b4140a87a9bb
