Dec 04 16:01:59.603 INFO checking kbacha/json_serde_test against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 16:01:59.603 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 16:01:59.790 INFO [stdout] 5c50bffeda90d8596d9080ecaf9116fa95e492697a5c9b8aebeb202a79a15d54
Dec 04 16:01:59.797 INFO running `"docker" "start" "-a" "5c50bffeda90d8596d9080ecaf9116fa95e492697a5c9b8aebeb202a79a15d54"`
Dec 04 16:02:00.556 INFO [stderr] usermod: no changes
Dec 04 16:02:00.679 INFO [stderr]     Checking json_testing v0.1.0 (/source)
Dec 04 16:02:01.206 INFO [stderr] warning: unused import: `Read`
Dec 04 16:02:01.206 INFO [stderr]  --> src/main.rs:7:21
Dec 04 16:02:01.206 INFO [stderr]   |
Dec 04 16:02:01.206 INFO [stderr] 7 | use std::io::{self, Read};
Dec 04 16:02:01.206 INFO [stderr]   |                     ^^^^
Dec 04 16:02:01.206 INFO [stderr]   |
Dec 04 16:02:01.206 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 16:02:01.206 INFO [stderr] 
Dec 04 16:02:01.295 INFO [stderr] warning: unused import: `Read`
Dec 04 16:02:01.295 INFO [stderr]  --> src/main.rs:7:21
Dec 04 16:02:01.295 INFO [stderr]   |
Dec 04 16:02:01.295 INFO [stderr] 7 | use std::io::{self, Read};
Dec 04 16:02:01.295 INFO [stderr]   |                     ^^^^
Dec 04 16:02:01.295 INFO [stderr]   |
Dec 04 16:02:01.295 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 16:02:01.295 INFO [stderr] 
Dec 04 16:02:01.435 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
Dec 04 16:02:01.439 INFO [stderr] su: No module specific data is present
Dec 04 16:02:01.848 INFO running `"docker" "inspect" "5c50bffeda90d8596d9080ecaf9116fa95e492697a5c9b8aebeb202a79a15d54"`
Dec 04 16:02:02.011 INFO running `"docker" "rm" "-f" "5c50bffeda90d8596d9080ecaf9116fa95e492697a5c9b8aebeb202a79a15d54"`
Dec 04 16:02:02.199 INFO [stdout] 5c50bffeda90d8596d9080ecaf9116fa95e492697a5c9b8aebeb202a79a15d54