[INFO] cloning repository https://github.com/krishnakumar4a4/usb_com
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/krishnakumar4a4/usb_com" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrishnakumar4a4%2Fusb_com", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrishnakumar4a4%2Fusb_com'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 64f4e47bacc3c08387e00589a2c2d40d682bb7d4
[INFO] testing krishnakumar4a4/usb_com against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrishnakumar4a4%2Fusb_com" "/workspace/builds/worker-47/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-47/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/krishnakumar4a4/usb_com on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/krishnakumar4a4/usb_com
[INFO] finished tweaking git repo https://github.com/krishnakumar4a4/usb_com
[INFO] tweaked toml for git repo https://github.com/krishnakumar4a4/usb_com written to /workspace/builds/worker-47/source/Cargo.toml
[INFO] crate git repo https://github.com/krishnakumar4a4/usb_com already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60eb51fca07773c87579adb0813a6c61f7741cd11538dd7e8333c671c42240b2
[INFO] running `Command { std: "docker" "start" "-a" "60eb51fca07773c87579adb0813a6c61f7741cd11538dd7e8333c671c42240b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60eb51fca07773c87579adb0813a6c61f7741cd11538dd7e8333c671c42240b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60eb51fca07773c87579adb0813a6c61f7741cd11538dd7e8333c671c42240b2", kill_on_drop: false }`
[INFO] [stdout] 60eb51fca07773c87579adb0813a6c61f7741cd11538dd7e8333c671c42240b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b711d0a077d84accbf6f13c2c1918abe34848f4e6eeef0d2047bb4d4ca0b8b39
[INFO] running `Command { std: "docker" "start" "-a" "b711d0a077d84accbf6f13c2c1918abe34848f4e6eeef0d2047bb4d4ca0b8b39", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling bit-vec v0.5.0
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling bit-set v0.2.0
[INFO] [stderr]    Compiling libusb-sys v0.2.3
[INFO] [stderr]    Compiling libusb v0.3.0
[INFO] [stderr]    Compiling usb_com v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut context = libusb::Context::new().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:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     for mut device in context.devices().unwrap().iter() {
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.70s
[INFO] running `Command { std: "docker" "inspect" "b711d0a077d84accbf6f13c2c1918abe34848f4e6eeef0d2047bb4d4ca0b8b39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b711d0a077d84accbf6f13c2c1918abe34848f4e6eeef0d2047bb4d4ca0b8b39", kill_on_drop: false }`
[INFO] [stdout] b711d0a077d84accbf6f13c2c1918abe34848f4e6eeef0d2047bb4d4ca0b8b39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66d3966d4171e7d75ba49ff08bee5ce7f89c8ebda463c0bbded87e6e2b7dcbcb
[INFO] running `Command { std: "docker" "start" "-a" "66d3966d4171e7d75ba49ff08bee5ce7f89c8ebda463c0bbded87e6e2b7dcbcb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling usb_com v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> examples/read_device.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     try!(handle.reset());
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> examples/list_devices.rs:19:19
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let context = try!(libusb::Context::new());
[INFO] [stdout]    |                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> examples/read_device.rs:64:21
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let languages = try!(handle.read_languages(timeout));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> examples/read_device.rs:66:42
[INFO] [stdout]    |
[INFO] [stdout] 66 |     println!("Active configuration: {}", try!(handle.active_configuration()));
[INFO] [stdout]    |                                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> examples/list_devices.rs:21:19
[INFO] [stdout]    |
[INFO] [stdout] 21 |     for device in try!(context.devices()).iter() {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> examples/read_device.rs:167:5
[INFO] [stdout]     |
[INFO] [stdout] 167 |     try!(handle.set_active_configuration(endpoint.config));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> examples/read_device.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 |     try!(handle.claim_interface(endpoint.iface));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> examples/read_device.rs:169:5
[INFO] [stdout]     |
[INFO] [stdout] 169 |     try!(handle.set_alternate_setting(endpoint.iface, endpoint.setting));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> examples/read_wacom_device.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     try!(handle.reset());
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> examples/read_wacom_device.rs:64:21
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let languages = try!(handle.read_languages(timeout));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> examples/read_wacom_device.rs:66:42
[INFO] [stdout]    |
[INFO] [stdout] 66 |     println!("Active configuration: {}", try!(handle.active_configuration()));
[INFO] [stdout]    |                                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> examples/read_wacom_device.rs:171:5
[INFO] [stdout]     |
[INFO] [stdout] 171 |     try!(handle.claim_interface(endpoint.iface));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> examples/read_device.rs:132:17
[INFO] [stdout]     |
[INFO] [stdout] 132 |             let mut buf = unsafe { slice::from_raw_parts_mut((&mut vec[..]).as_mut_ptr(), vec.capacity()) };
[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:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut context = libusb::Context::new().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:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     for mut device in context.devices().unwrap().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]    --> examples/read_wacom_device.rs:132:17
[INFO] [stdout]     |
[INFO] [stdout] 132 |             let mut buf = unsafe { slice::from_raw_parts_mut((&mut vec[..]).as_mut_ptr(), vec.capacity()) };
[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: field is never read: `config`
[INFO] [stdout]  --> examples/read_wacom_device.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     config: u8,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Endpoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> examples/read_wacom_device.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `setting`
[INFO] [stdout]   --> examples/read_wacom_device.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     setting: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Endpoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> examples/read_wacom_device.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "66d3966d4171e7d75ba49ff08bee5ce7f89c8ebda463c0bbded87e6e2b7dcbcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66d3966d4171e7d75ba49ff08bee5ce7f89c8ebda463c0bbded87e6e2b7dcbcb", kill_on_drop: false }`
[INFO] [stdout] 66d3966d4171e7d75ba49ff08bee5ce7f89c8ebda463c0bbded87e6e2b7dcbcb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 173b617f3eb295bab8f5fab911aa1126b9a96d7ab105043b27b1d30884ba92dd
[INFO] running `Command { std: "docker" "start" "-a" "173b617f3eb295bab8f5fab911aa1126b9a96d7ab105043b27b1d30884ba92dd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut context = libusb::Context::new().unwrap();
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     for mut device in context.devices().unwrap().iter() {
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> examples/read_device.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     try!(handle.reset());
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> examples/read_device.rs:64:21
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let languages = try!(handle.read_languages(timeout));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> examples/read_device.rs:66:42
[INFO] [stderr]    |
[INFO] [stderr] 66 |     println!("Active configuration: {}", try!(handle.active_configuration()));
[INFO] [stderr]    |                                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> examples/read_device.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     try!(handle.set_active_configuration(endpoint.config));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> examples/read_device.rs:168:5
[INFO] [stderr]     |
[INFO] [stderr] 168 |     try!(handle.claim_interface(endpoint.iface));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> examples/read_device.rs:169:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     try!(handle.set_alternate_setting(endpoint.iface, endpoint.setting));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/read_device.rs:132:17
[INFO] [stderr]     |
[INFO] [stderr] 132 |             let mut buf = unsafe { slice::from_raw_parts_mut((&mut vec[..]).as_mut_ptr(), vec.capacity()) };
[INFO] [stderr]     |                 ----^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> examples/list_devices.rs:19:19
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let context = try!(libusb::Context::new());
[INFO] [stderr]    |                   ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> examples/list_devices.rs:21:19
[INFO] [stderr]    |
[INFO] [stderr] 21 |     for device in try!(context.devices()).iter() {
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> examples/read_wacom_device.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     try!(handle.reset());
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> examples/read_wacom_device.rs:64:21
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let languages = try!(handle.read_languages(timeout));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> examples/read_wacom_device.rs:66:42
[INFO] [stderr]    |
[INFO] [stderr] 66 |     println!("Active configuration: {}", try!(handle.active_configuration()));
[INFO] [stderr]    |                                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> examples/read_wacom_device.rs:171:5
[INFO] [stderr]     |
[INFO] [stderr] 171 |     try!(handle.claim_interface(endpoint.iface));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/read_wacom_device.rs:132:17
[INFO] [stderr]     |
[INFO] [stderr] 132 |             let mut buf = unsafe { slice::from_raw_parts_mut((&mut vec[..]).as_mut_ptr(), vec.capacity()) };
[INFO] [stderr]     |                 ----^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `config`
[INFO] [stderr]  --> examples/read_wacom_device.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     config: u8,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `Endpoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]  --> examples/read_wacom_device.rs:7:10
[INFO] [stderr]   |
[INFO] [stderr] 7 | #[derive(Debug)]
[INFO] [stderr]   |          ^^^^^
[INFO] [stderr]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `setting`
[INFO] [stderr]   --> examples/read_wacom_device.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     setting: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Endpoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> examples/read_wacom_device.rs:7:10
[INFO] [stderr]    |
[INFO] [stderr] 7  | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `usb_com` (bin "usb_com" test) generated 2 warnings
[INFO] [stderr] warning: `usb_com` (example "read_device") generated 7 warnings
[INFO] [stderr] warning: `usb_com` (example "list_devices") generated 2 warnings
[INFO] [stderr] warning: `usb_com` (example "read_wacom_device") generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/usb_com-84d2b8027ea0e0fa)
[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" "173b617f3eb295bab8f5fab911aa1126b9a96d7ab105043b27b1d30884ba92dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "173b617f3eb295bab8f5fab911aa1126b9a96d7ab105043b27b1d30884ba92dd", kill_on_drop: false }`
[INFO] [stdout] 173b617f3eb295bab8f5fab911aa1126b9a96d7ab105043b27b1d30884ba92dd