Dec 17 12:14:43.559 INFO checking wastevensv/cbor-telemetry-relay against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 12:14:43.560 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 12:14:44.174 INFO [stdout] d4a24413038f5cbab8843dc183d8bf808154d09707d2f7a0e2608a4f22483ab5
Dec 17 12:14:44.179 INFO running `"docker" "start" "-a" "d4a24413038f5cbab8843dc183d8bf808154d09707d2f7a0e2608a4f22483ab5"`
Dec 17 12:14:45.852 INFO [stderr]     Checking serde v1.0.37
Dec 17 12:14:45.852 INFO [stderr]     Checking num-traits v0.2.2
Dec 17 12:14:45.852 INFO [stderr]     Checking cobs v0.1.3
Dec 17 12:14:45.852 INFO [stderr]    Compiling proc-macro2 v0.3.6
Dec 17 12:14:45.852 INFO [stderr]     Checking termios v0.2.2
Dec 17 12:14:45.852 INFO [stderr]     Checking serial-core v0.4.0
Dec 17 12:14:45.852 INFO [stderr]     Checking ioctl-rs v0.1.6
Dec 17 12:14:47.316 INFO [stderr]     Checking serial-unix v0.4.0
Dec 17 12:14:48.240 INFO [stderr]     Checking serial v0.4.0
Dec 17 12:14:51.305 INFO [stderr]    Compiling quote v0.5.1
Dec 17 12:14:52.371 INFO [stderr]    Compiling syn v0.13.1
Dec 17 12:15:05.744 INFO [stderr]    Compiling serde_derive_internals v0.23.1
Dec 17 12:15:10.496 INFO [stderr]    Compiling serde_derive v1.0.39
Dec 17 12:15:11.815 INFO [stderr]     Checking serde_cbor v0.8.2
Dec 17 12:15:11.816 INFO [stderr]     Checking serde_json v1.0.15
Dec 17 12:15:21.776 INFO [stderr]     Checking receiver-cbor v0.2.0 (/opt/crater/workdir)
Dec 17 12:15:22.800 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 12:15:22.800 INFO [stderr]   --> src/bin_proxy.rs:49:37
Dec 17 12:15:22.800 INFO [stderr]    |
Dec 17 12:15:22.800 INFO [stderr] 49 |                                     stream.flush();
Dec 17 12:15:22.800 INFO [stderr]    |                                     ^^^^^^^^^^^^^^^
Dec 17 12:15:22.800 INFO [stderr]    |
Dec 17 12:15:22.800 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 12:15:22.800 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 12:15:22.800 INFO [stderr] 
Dec 17 12:15:22.824 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 12:15:22.824 INFO [stderr]   --> src/bin_proxy.rs:49:37
Dec 17 12:15:22.824 INFO [stderr]    |
Dec 17 12:15:22.824 INFO [stderr] 49 |                                     stream.flush();
Dec 17 12:15:22.824 INFO [stderr]    |                                     ^^^^^^^^^^^^^^^
Dec 17 12:15:22.824 INFO [stderr]    |
Dec 17 12:15:22.824 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 12:15:22.824 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 12:15:22.824 INFO [stderr] 
Dec 17 12:15:23.222 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.43s
Dec 17 12:15:24.213 INFO running `"docker" "inspect" "d4a24413038f5cbab8843dc183d8bf808154d09707d2f7a0e2608a4f22483ab5"`
Dec 17 12:15:24.642 INFO running `"docker" "rm" "-f" "d4a24413038f5cbab8843dc183d8bf808154d09707d2f7a0e2608a4f22483ab5"`
Dec 17 12:15:25.008 INFO [stdout] d4a24413038f5cbab8843dc183d8bf808154d09707d2f7a0e2608a4f22483ab5