[INFO] cloning repository https://github.com/murl-digital/ledragon-usb-driver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/murl-digital/ledragon-usb-driver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmurl-digital%2Fledragon-usb-driver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmurl-digital%2Fledragon-usb-driver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 02c65f7ecea71ce6cffdab55419df213f7d5ffd0
[INFO] checking murl-digital/ledragon-usb-driver against master#507271bc119683008ec719ecee48814e8ac86c65 for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmurl-digital%2Fledragon-usb-driver" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/murl-digital/ledragon-usb-driver
[INFO] finished tweaking git repo https://github.com/murl-digital/ledragon-usb-driver
[INFO] tweaked toml for git repo https://github.com/murl-digital/ledragon-usb-driver written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/murl-digital/ledragon-usb-driver on toolchain 507271bc119683008ec719ecee48814e8ac86c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/murl-digital/ledragon-usb-driver 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" "+507271bc119683008ec719ecee48814e8ac86c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serialport v4.7.1
[INFO] [stderr]   Downloaded rusb v0.9.4
[INFO] [stderr]   Downloaded mach2 v0.4.2
[INFO] [stderr]   Downloaded cc v1.2.21
[INFO] [stderr]   Downloaded libusb1-sys v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f38a269c515cb3956d00293a34210186a3a6ba071eaa947b1d6ee9ba5221cd8
[INFO] running `Command { std: "docker" "start" "-a" "5f38a269c515cb3956d00293a34210186a3a6ba071eaa947b1d6ee9ba5221cd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f38a269c515cb3956d00293a34210186a3a6ba071eaa947b1d6ee9ba5221cd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f38a269c515cb3956d00293a34210186a3a6ba071eaa947b1d6ee9ba5221cd8", kill_on_drop: false }`
[INFO] [stdout] 5f38a269c515cb3956d00293a34210186a3a6ba071eaa947b1d6ee9ba5221cd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0520306d1ec22c8cf3ed81baf9dd5dbda0fe8217c4af3f44c6bfb216b6005f74
[INFO] running `Command { std: "docker" "start" "-a" "0520306d1ec22c8cf3ed81baf9dd5dbda0fe8217c4af3f44c6bfb216b6005f74", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling cc v1.2.21
[INFO] [stderr]    Compiling rusb v0.9.4
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling libusb1-sys v0.7.0
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking libudev v0.3.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]     Checking thiserror v2.0.12
[INFO] [stderr]     Checking unescaper v0.1.6
[INFO] [stderr]     Checking serialport v4.7.1
[INFO] [stderr]     Checking ledragon-usb-driver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `DEVICE_VID` is never used
[INFO] [stdout]  --> src/lib.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) const DEVICE_VID: u16 = 0x6942;
[INFO] [stdout]   |                  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEVICE_PID` is never used
[INFO] [stdout]  --> src/lib.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub(crate) const DEVICE_PID: u16 = 0x6942;
[INFO] [stdout]   |                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `context`, `device_handle`, `interface`, `interface_descriptor`, `read_endpoint`, and `write_endpoint` are never read
[INFO] [stdout]   --> src/lib.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout]  4 | pub(crate) struct UsbInternals<'usb> {
[INFO] [stdout]    |                   ------------ fields in this struct
[INFO] [stdout]  5 |     context: rusb::Context,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]  6 |     device_handle: rusb::DeviceHandle<rusb::Context>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]  7 |     interface: rusb::Interface<'usb>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]  8 |     interface_descriptor: rusb::InterfaceDescriptor<'usb>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  9 |     read_endpoint: rusb::EndpointDescriptor<'usb>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 10 |     write_endpoint: rusb::EndpointDescriptor<'usb>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `internal` is never read
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct LEDragonContext<'usb> {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] 14 |     internal: UsbInternals<'usb>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEVICE_VID` is never used
[INFO] [stdout]  --> src/lib.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) const DEVICE_VID: u16 = 0x6942;
[INFO] [stdout]   |                  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEVICE_PID` is never used
[INFO] [stdout]  --> src/lib.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub(crate) const DEVICE_PID: u16 = 0x6942;
[INFO] [stdout]   |                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `context`, `device_handle`, `interface`, `interface_descriptor`, `read_endpoint`, and `write_endpoint` are never read
[INFO] [stdout]   --> src/lib.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout]  4 | pub(crate) struct UsbInternals<'usb> {
[INFO] [stdout]    |                   ------------ fields in this struct
[INFO] [stdout]  5 |     context: rusb::Context,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]  6 |     device_handle: rusb::DeviceHandle<rusb::Context>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]  7 |     interface: rusb::Interface<'usb>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]  8 |     interface_descriptor: rusb::InterfaceDescriptor<'usb>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  9 |     read_endpoint: rusb::EndpointDescriptor<'usb>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 10 |     write_endpoint: rusb::EndpointDescriptor<'usb>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `internal` is never read
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct LEDragonContext<'usb> {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] 14 |     internal: UsbInternals<'usb>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::str`
[INFO] [stdout]  --> examples/test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::str;
[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: `task` and `thread`
[INFO] [stdout]  --> examples/test.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     task, thread,
[INFO] [stdout]   |     ^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DataBits`, `SerialPortBuilder`, `SerialPortType`, `StopBits`, and `available_ports`
[INFO] [stdout]   --> examples/test.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serialport::{DataBits, SerialPortBuilder, SerialPortType, StopBits, available_ports};
[INFO] [stdout]    |                  ^^^^^^^^  ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/test.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut data = [0; 64];
[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]   --> examples/test.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let mut read_amt = 0;
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `now`
[INFO] [stdout]   --> examples/test.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let now = Instant::now();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_now`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `write_amt`
[INFO] [stdout]   --> examples/test.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let write_amt = device
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_write_amt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> examples/test.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut data = [0; 64];
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `read_amt`
[INFO] [stdout]   --> examples/test.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let mut read_amt = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_read_amt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.91s
[INFO] running `Command { std: "docker" "inspect" "0520306d1ec22c8cf3ed81baf9dd5dbda0fe8217c4af3f44c6bfb216b6005f74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0520306d1ec22c8cf3ed81baf9dd5dbda0fe8217c4af3f44c6bfb216b6005f74", kill_on_drop: false }`
[INFO] [stdout] 0520306d1ec22c8cf3ed81baf9dd5dbda0fe8217c4af3f44c6bfb216b6005f74
