Dec 12 03:30:23.262 INFO checking Chabare/Sonos against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 03:30:23.262 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 12 03:30:23.682 INFO [stdout] f0540943435b9d42015fde995c1363ed76eec88175adc12942794c59eb9cae0a
Dec 12 03:30:23.684 INFO running `"docker" "start" "-a" "f0540943435b9d42015fde995c1363ed76eec88175adc12942794c59eb9cae0a"`
Dec 12 03:30:24.864 INFO [stderr] usermod: no changes
Dec 12 03:30:24.978 INFO [stderr]     Checking fern v0.4.2
Dec 12 03:30:24.988 INFO [stderr]     Checking socket v0.0.7
Dec 12 03:30:26.460 INFO [stderr]     Checking sonos_discovery v0.0.1
Dec 12 03:30:27.576 INFO [stderr]     Checking sonos v0.1.0 (/source)
Dec 12 03:30:29.067 INFO [stderr] warning: method is never used: `empty`
Dec 12 03:30:29.067 INFO [stderr]  --> src/zone/info.rs:8:5
Dec 12 03:30:29.067 INFO [stderr]   |
Dec 12 03:30:29.067 INFO [stderr] 8 |     pub fn empty() -> Self {
Dec 12 03:30:29.067 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:30:29.067 INFO [stderr]   |
Dec 12 03:30:29.067 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 12 03:30:29.067 INFO [stderr] 
Dec 12 03:30:29.181 INFO [stderr] warning: method is never used: `empty`
Dec 12 03:30:29.181 INFO [stderr]  --> src/zone/info.rs:8:5
Dec 12 03:30:29.182 INFO [stderr]   |
Dec 12 03:30:29.182 INFO [stderr] 8 |     pub fn empty() -> Self {
Dec 12 03:30:29.182 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:30:29.182 INFO [stderr]   |
Dec 12 03:30:29.183 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 12 03:30:29.183 INFO [stderr] 
Dec 12 03:30:31.337 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.44s
Dec 12 03:30:31.341 INFO [stderr] su: No module specific data is present
Dec 12 03:30:32.428 INFO running `"docker" "inspect" "f0540943435b9d42015fde995c1363ed76eec88175adc12942794c59eb9cae0a"`
Dec 12 03:30:32.770 INFO running `"docker" "rm" "-f" "f0540943435b9d42015fde995c1363ed76eec88175adc12942794c59eb9cae0a"`
Dec 12 03:30:33.124 INFO [stdout] f0540943435b9d42015fde995c1363ed76eec88175adc12942794c59eb9cae0a