Dec 19 05:48:21.940 INFO checking wastevensv/cbor-telemetry-relay against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 05:48:21.940 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 05:48:22.422 INFO [stdout] b9dac57ba3e8b2807fba0d56eb34956d1116dea21e14a6acb4fbe85622a72dfc
Dec 19 05:48:22.424 INFO running `"docker" "start" "-a" "b9dac57ba3e8b2807fba0d56eb34956d1116dea21e14a6acb4fbe85622a72dfc"`
Dec 19 05:48:25.388 INFO [stderr]     Checking serde v1.0.37
Dec 19 05:48:25.388 INFO [stderr]     Checking cobs v0.1.3
Dec 19 05:48:25.388 INFO [stderr]    Compiling proc-macro2 v0.3.6
Dec 19 05:48:25.388 INFO [stderr]     Checking ioctl-rs v0.1.6
Dec 19 05:48:25.388 INFO [stderr]     Checking serial-core v0.4.0
Dec 19 05:48:25.396 INFO [stderr]     Checking termios v0.2.2
Dec 19 05:48:26.976 INFO [stderr]     Checking serial-unix v0.4.0
Dec 19 05:48:27.816 INFO [stderr]     Checking serial v0.4.0
Dec 19 05:48:29.700 INFO [stderr]    Compiling quote v0.5.1
Dec 19 05:48:30.628 INFO [stderr]    Compiling syn v0.13.1
Dec 19 05:48:42.500 INFO [stderr]    Compiling serde_derive_internals v0.23.1
Dec 19 05:48:45.396 INFO [stderr]    Compiling serde_derive v1.0.39
Dec 19 05:48:45.960 INFO [stderr]     Checking serde_json v1.0.15
Dec 19 05:48:45.960 INFO [stderr]     Checking serde_cbor v0.8.2
Dec 19 05:48:56.587 INFO [stderr]     Checking receiver-cbor v0.2.0 (/opt/crater/workdir)
Dec 19 05:48:57.108 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:48:57.108 INFO [stderr]   --> src/bin_proxy.rs:49:37
Dec 19 05:48:57.108 INFO [stderr]    |
Dec 19 05:48:57.108 INFO [stderr] 49 |                                     stream.flush();
Dec 19 05:48:57.108 INFO [stderr]    |                                     ^^^^^^^^^^^^^^^
Dec 19 05:48:57.108 INFO [stderr]    |
Dec 19 05:48:57.108 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 05:48:57.108 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:48:57.108 INFO [stderr] 
Dec 19 05:48:57.273 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:48:57.273 INFO [stderr]   --> src/bin_proxy.rs:49:37
Dec 19 05:48:57.273 INFO [stderr]    |
Dec 19 05:48:57.273 INFO [stderr] 49 |                                     stream.flush();
Dec 19 05:48:57.273 INFO [stderr]    |                                     ^^^^^^^^^^^^^^^
Dec 19 05:48:57.273 INFO [stderr]    |
Dec 19 05:48:57.273 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 05:48:57.273 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:48:57.273 INFO [stderr] 
Dec 19 05:48:57.612 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.33s
Dec 19 05:48:58.588 INFO running `"docker" "inspect" "b9dac57ba3e8b2807fba0d56eb34956d1116dea21e14a6acb4fbe85622a72dfc"`
Dec 19 05:48:58.902 INFO running `"docker" "rm" "-f" "b9dac57ba3e8b2807fba0d56eb34956d1116dea21e14a6acb4fbe85622a72dfc"`
Dec 19 05:48:59.244 INFO [stdout] b9dac57ba3e8b2807fba0d56eb34956d1116dea21e14a6acb4fbe85622a72dfc