Dec 11 13:52:19.949 INFO checking mcahriman/m590-proto against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 13:52:19.950 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 11 13:52:20.388 INFO [stdout] 432fde5fcfbff184ac0d8368d534f1a7ec5de23fe4389a48f86d1bcf2463cdfb
Dec 11 13:52:20.390 INFO running `"docker" "start" "-a" "432fde5fcfbff184ac0d8368d534f1a7ec5de23fe4389a48f86d1bcf2463cdfb"`
Dec 11 13:52:21.601 INFO [stderr] usermod: no changes
Dec 11 13:52:21.748 INFO [stderr]     Checking serial-core v0.4.0
Dec 11 13:52:22.184 INFO [stderr]     Checking m590e-uart-proto v0.1.0 (/source)
Dec 11 13:52:22.440 INFO [stderr] warning: unused import: `std::io`
Dec 11 13:52:22.440 INFO [stderr]  --> src/main.rs:4:5
Dec 11 13:52:22.440 INFO [stderr]   |
Dec 11 13:52:22.440 INFO [stderr] 4 | use std::io;
Dec 11 13:52:22.440 INFO [stderr]   |     ^^^^^^^
Dec 11 13:52:22.441 INFO [stderr]   |
Dec 11 13:52:22.441 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 13:52:22.441 INFO [stderr] 
Dec 11 13:52:22.441 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 11 13:52:22.441 INFO [stderr]  --> src/main.rs:5:5
Dec 11 13:52:22.441 INFO [stderr]   |
Dec 11 13:52:22.441 INFO [stderr] 5 | use std::time::Duration;
Dec 11 13:52:22.441 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 11 13:52:22.441 INFO [stderr] 
Dec 11 13:52:22.441 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 11 13:52:22.441 INFO [stderr]  --> src/main.rs:9:5
Dec 11 13:52:22.441 INFO [stderr]   |
Dec 11 13:52:22.441 INFO [stderr] 9 | use std::io::prelude::*;
Dec 11 13:52:22.441 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 11 13:52:22.441 INFO [stderr] 
Dec 11 13:52:22.474 INFO [stderr] warning: unused import: `serial::prelude`
Dec 11 13:52:22.475 INFO [stderr]   --> src/main.rs:10:5
Dec 11 13:52:22.475 INFO [stderr]    |
Dec 11 13:52:22.475 INFO [stderr] 10 | use serial::prelude::*;
Dec 11 13:52:22.475 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 11 13:52:22.475 INFO [stderr] 
Dec 11 13:52:22.496 INFO [stderr] warning: constant item is never used: `E_ERR`
Dec 11 13:52:22.496 INFO [stderr]   --> src/main.rs:15:1
Dec 11 13:52:22.496 INFO [stderr]    |
Dec 11 13:52:22.496 INFO [stderr] 15 | const E_ERR: i32 = 1;
Dec 11 13:52:22.496 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:52:22.496 INFO [stderr]    |
Dec 11 13:52:22.496 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 13:52:22.496 INFO [stderr] 
Dec 11 13:52:22.496 INFO [stderr] warning: unused import: `std::io`
Dec 11 13:52:22.496 INFO [stderr]  --> src/main.rs:4:5
Dec 11 13:52:22.496 INFO [stderr]   |
Dec 11 13:52:22.496 INFO [stderr] 4 | use std::io;
Dec 11 13:52:22.496 INFO [stderr]   |     ^^^^^^^
Dec 11 13:52:22.496 INFO [stderr]   |
Dec 11 13:52:22.496 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 13:52:22.496 INFO [stderr] 
Dec 11 13:52:22.496 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 11 13:52:22.496 INFO [stderr]  --> src/main.rs:5:5
Dec 11 13:52:22.496 INFO [stderr]   |
Dec 11 13:52:22.496 INFO [stderr] 5 | use std::time::Duration;
Dec 11 13:52:22.496 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 11 13:52:22.496 INFO [stderr] 
Dec 11 13:52:22.496 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 11 13:52:22.496 INFO [stderr]  --> src/main.rs:9:5
Dec 11 13:52:22.496 INFO [stderr]   |
Dec 11 13:52:22.496 INFO [stderr] 9 | use std::io::prelude::*;
Dec 11 13:52:22.496 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 11 13:52:22.496 INFO [stderr] 
Dec 11 13:52:22.518 INFO [stderr] warning: unused import: `serial::prelude`
Dec 11 13:52:22.518 INFO [stderr]   --> src/main.rs:10:5
Dec 11 13:52:22.518 INFO [stderr]    |
Dec 11 13:52:22.518 INFO [stderr] 10 | use serial::prelude::*;
Dec 11 13:52:22.518 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 11 13:52:22.518 INFO [stderr] 
Dec 11 13:52:22.532 INFO [stderr] warning: constant item is never used: `E_ERR`
Dec 11 13:52:22.532 INFO [stderr]   --> src/main.rs:15:1
Dec 11 13:52:22.532 INFO [stderr]    |
Dec 11 13:52:22.532 INFO [stderr] 15 | const E_ERR: i32 = 1;
Dec 11 13:52:22.532 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:52:22.532 INFO [stderr]    |
Dec 11 13:52:22.532 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 13:52:22.532 INFO [stderr] 
Dec 11 13:52:22.555 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
Dec 11 13:52:22.556 INFO [stderr] su: No module specific data is present
Dec 11 13:52:22.914 INFO running `"docker" "inspect" "432fde5fcfbff184ac0d8368d534f1a7ec5de23fe4389a48f86d1bcf2463cdfb"`
Dec 11 13:52:23.076 INFO running `"docker" "rm" "-f" "432fde5fcfbff184ac0d8368d534f1a7ec5de23fe4389a48f86d1bcf2463cdfb"`
Dec 11 13:52:23.170 INFO [stdout] 432fde5fcfbff184ac0d8368d534f1a7ec5de23fe4389a48f86d1bcf2463cdfb