Dec 19 05:48:20.627 INFO checking wastevensv/cbor-telemetry-relay against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 05:48:20.627 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/wastevensv/cbor-telemetry-relay:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 05:48:21.090 INFO [stdout] f13e8a5efef8f774481ad75fe5ebf056f840f66b840ba51402f5c6f908adfafc
Dec 19 05:48:21.092 INFO running `"docker" "start" "-a" "f13e8a5efef8f774481ad75fe5ebf056f840f66b840ba51402f5c6f908adfafc"`
Dec 19 05:48:23.243 INFO [stderr]     Checking num-traits v0.2.2
Dec 19 05:48:23.243 INFO [stderr]     Checking cobs v0.1.3
Dec 19 05:48:23.243 INFO [stderr]     Checking serial-core v0.4.0
Dec 19 05:48:23.256 INFO [stderr]     Checking termios v0.2.2
Dec 19 05:48:23.256 INFO [stderr]     Checking ioctl-rs v0.1.6
Dec 19 05:48:23.256 INFO [stderr]     Checking serde_cbor v0.8.2
Dec 19 05:48:23.256 INFO [stderr]    Compiling serde_derive_internals v0.23.1
Dec 19 05:48:25.160 INFO [stderr]     Checking serial-unix v0.4.0
Dec 19 05:48:25.608 INFO [stderr]     Checking serial v0.4.0
Dec 19 05:48:25.768 INFO [stderr]     Checking serde_json v1.0.15
Dec 19 05:48:29.902 INFO [stderr]    Compiling serde_derive v1.0.39
Dec 19 05:48:41.006 INFO [stderr]     Checking receiver-cbor v0.2.0 (/opt/crater/workdir)
Dec 19 05:48:41.776 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:48:41.777 INFO [stderr]   --> src/bin_proxy.rs:49:37
Dec 19 05:48:41.777 INFO [stderr]    |
Dec 19 05:48:41.777 INFO [stderr] 49 |                                     stream.flush();
Dec 19 05:48:41.778 INFO [stderr]    |                                     ^^^^^^^^^^^^^^^
Dec 19 05:48:41.778 INFO [stderr]    |
Dec 19 05:48:41.778 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 05:48:41.779 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:48:41.779 INFO [stderr] 
Dec 19 05:48:41.901 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:48:41.901 INFO [stderr]   --> src/bin_proxy.rs:49:37
Dec 19 05:48:41.902 INFO [stderr]    |
Dec 19 05:48:41.902 INFO [stderr] 49 |                                     stream.flush();
Dec 19 05:48:41.902 INFO [stderr]    |                                     ^^^^^^^^^^^^^^^
Dec 19 05:48:41.902 INFO [stderr]    |
Dec 19 05:48:41.902 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 05:48:41.903 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:48:41.903 INFO [stderr] 
Dec 19 05:48:42.224 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.06s
Dec 19 05:48:43.072 INFO running `"docker" "inspect" "f13e8a5efef8f774481ad75fe5ebf056f840f66b840ba51402f5c6f908adfafc"`
Dec 19 05:48:43.308 INFO running `"docker" "rm" "-f" "f13e8a5efef8f774481ad75fe5ebf056f840f66b840ba51402f5c6f908adfafc"`
Dec 19 05:48:43.660 INFO [stdout] f13e8a5efef8f774481ad75fe5ebf056f840f66b840ba51402f5c6f908adfafc