Dec 05 06:23:24.544 INFO checking soundio-0.2.0 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 06:23:24.544 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 06:23:25.008 INFO [stdout] 1e51b9d5631fdd90db7e764d0a6e65b89af2e058f57e9eb871d2199654ad265a
Dec 05 06:23:25.016 INFO running `"docker" "start" "-a" "1e51b9d5631fdd90db7e764d0a6e65b89af2e058f57e9eb871d2199654ad265a"`
Dec 05 06:23:26.103 INFO [stderr] usermod: no changes
Dec 05 06:23:26.154 INFO [stderr] warning: An explicit [[example]] section is specified in Cargo.toml which currently
Dec 05 06:23:26.154 INFO [stderr] disables Cargo from automatically inferring other example targets.
Dec 05 06:23:26.154 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Dec 05 06:23:26.154 INFO [stderr] files will be included as a example target:
Dec 05 06:23:26.154 INFO [stderr] 
Dec 05 06:23:26.154 INFO [stderr] * /source/examples/sine/main.rs
Dec 05 06:23:26.154 INFO [stderr] 
Dec 05 06:23:26.154 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Dec 05 06:23:26.154 INFO [stderr] ready to be compiled as a example target today. You can future-proof yourself
Dec 05 06:23:26.154 INFO [stderr] and disable this warning by adding `autoexamples = false` to your [package]
Dec 05 06:23:26.154 INFO [stderr] section. You may also move the files to a location where Cargo would not
Dec 05 06:23:26.154 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Dec 05 06:23:26.154 INFO [stderr] 
Dec 05 06:23:26.154 INFO [stderr] For more information on this warning you can consult
Dec 05 06:23:26.154 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Dec 05 06:23:26.173 INFO [stderr]    Compiling libsoundio-sys v0.2.0
Dec 05 06:23:31.295 INFO [stderr]     Checking soundio v0.2.0 (/source)
Dec 05 06:23:32.482 INFO [stderr] warning: unused import: `super::super::backend::*`
Dec 05 06:23:32.483 INFO [stderr]    --> src/context.rs:686:6
Dec 05 06:23:32.483 INFO [stderr]     |
Dec 05 06:23:32.483 INFO [stderr] 686 |     use super::super::backend::*;
Dec 05 06:23:32.483 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 06:23:32.483 INFO [stderr]     |
Dec 05 06:23:32.483 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 05 06:23:32.483 INFO [stderr] 
Dec 05 06:23:32.539 INFO [stderr] warning: variable does not need to be mutable
Dec 05 06:23:32.539 INFO [stderr]    --> src/device.rs:335:7
Dec 05 06:23:32.539 INFO [stderr]     |
Dec 05 06:23:32.539 INFO [stderr] 335 |         let mut outstream = unsafe { raw::soundio_outstream_create(self.device) };
Dec 05 06:23:32.539 INFO [stderr]     |             ----^^^^^^^^^
Dec 05 06:23:32.539 INFO [stderr]     |             |
Dec 05 06:23:32.539 INFO [stderr]     |             help: remove this `mut`
Dec 05 06:23:32.539 INFO [stderr]     |
Dec 05 06:23:32.539 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 05 06:23:32.539 INFO [stderr] 
Dec 05 06:23:32.539 INFO [stderr] warning: variable does not need to be mutable
Dec 05 06:23:32.539 INFO [stderr]    --> src/device.rs:439:7
Dec 05 06:23:32.539 INFO [stderr]     |
Dec 05 06:23:32.539 INFO [stderr] 439 |         let mut instream = unsafe { raw::soundio_instream_create(self.device) };
Dec 05 06:23:32.539 INFO [stderr]     |             ----^^^^^^^^
Dec 05 06:23:32.539 INFO [stderr]     |             |
Dec 05 06:23:32.539 INFO [stderr]     |             help: remove this `mut`
Dec 05 06:23:32.539 INFO [stderr] 
Dec 05 06:23:33.439 INFO [stderr] warning: variable does not need to be mutable
Dec 05 06:23:33.439 INFO [stderr]    --> src/device.rs:335:7
Dec 05 06:23:33.439 INFO [stderr]     |
Dec 05 06:23:33.439 INFO [stderr] 335 |         let mut outstream = unsafe { raw::soundio_outstream_create(self.device) };
Dec 05 06:23:33.439 INFO [stderr]     |             ----^^^^^^^^^
Dec 05 06:23:33.439 INFO [stderr]     |             |
Dec 05 06:23:33.439 INFO [stderr]     |             help: remove this `mut`
Dec 05 06:23:33.439 INFO [stderr]     |
Dec 05 06:23:33.439 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 05 06:23:33.439 INFO [stderr] 
Dec 05 06:23:33.447 INFO [stderr] warning: variable does not need to be mutable
Dec 05 06:23:33.447 INFO [stderr]    --> src/device.rs:439:7
Dec 05 06:23:33.447 INFO [stderr]     |
Dec 05 06:23:33.447 INFO [stderr] 439 |         let mut instream = unsafe { raw::soundio_instream_create(self.device) };
Dec 05 06:23:33.447 INFO [stderr]     |             ----^^^^^^^^
Dec 05 06:23:33.447 INFO [stderr]     |             |
Dec 05 06:23:33.447 INFO [stderr]     |             help: remove this `mut`
Dec 05 06:23:33.447 INFO [stderr] 
Dec 05 06:23:33.946 INFO [stderr] warning: unused variable: `watch`
Dec 05 06:23:33.946 INFO [stderr]  --> examples/list_devices/main.rs:4:17
Dec 05 06:23:33.946 INFO [stderr]   |
Dec 05 06:23:33.946 INFO [stderr] 4 | fn list_devices(watch: bool, short_output: bool, backend: soundio::Backend) -> Result<(), String> {
Dec 05 06:23:33.946 INFO [stderr]   |                 ^^^^^ help: consider using `_watch` instead
Dec 05 06:23:33.946 INFO [stderr]   |
Dec 05 06:23:33.946 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 05 06:23:33.946 INFO [stderr] 
Dec 05 06:23:34.299 INFO [stderr] warning: method is never used: `finished`
Dec 05 06:23:34.299 INFO [stderr]   --> examples/player/main.rs:50:2
Dec 05 06:23:34.299 INFO [stderr]    |
Dec 05 06:23:34.299 INFO [stderr] 50 |     fn finished(&self) -> bool {
Dec 05 06:23:34.299 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 06:23:34.299 INFO [stderr]    |
Dec 05 06:23:34.299 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 06:23:34.299 INFO [stderr] 
Dec 05 06:23:34.335 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.19s
Dec 05 06:23:34.335 INFO [stderr] su: No module specific data is present
Dec 05 06:23:35.171 INFO running `"docker" "inspect" "1e51b9d5631fdd90db7e764d0a6e65b89af2e058f57e9eb871d2199654ad265a"`
Dec 05 06:23:35.345 INFO running `"docker" "rm" "-f" "1e51b9d5631fdd90db7e764d0a6e65b89af2e058f57e9eb871d2199654ad265a"`
Dec 05 06:23:35.469 INFO [stdout] 1e51b9d5631fdd90db7e764d0a6e65b89af2e058f57e9eb871d2199654ad265a