Dec 17 21:40:53.297 INFO checking kbacha/json_serde_test against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 21:40:53.297 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/kbacha/json_serde_test:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 21:40:53.531 INFO [stdout] b8f6f589ce7fe8ec6fe6e8a41f8ebd7670fdfcfa645cd9241295d71b798e0fe7
Dec 17 21:40:53.534 INFO running `"docker" "start" "-a" "b8f6f589ce7fe8ec6fe6e8a41f8ebd7670fdfcfa645cd9241295d71b798e0fe7"`
Dec 17 21:40:54.255 INFO [stderr]     Checking json_testing v0.1.0 (/opt/crater/workdir)
Dec 17 21:40:54.492 INFO [stderr] warning: unused import: `Read`
Dec 17 21:40:54.492 INFO [stderr]  --> src/main.rs:7:21
Dec 17 21:40:54.492 INFO [stderr]   |
Dec 17 21:40:54.492 INFO [stderr] 7 | use std::io::{self, Read};
Dec 17 21:40:54.492 INFO [stderr]   |                     ^^^^
Dec 17 21:40:54.492 INFO [stderr]   |
Dec 17 21:40:54.492 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 21:40:54.492 INFO [stderr] 
Dec 17 21:40:54.500 INFO [stderr] warning: unused import: `Read`
Dec 17 21:40:54.500 INFO [stderr]  --> src/main.rs:7:21
Dec 17 21:40:54.500 INFO [stderr]   |
Dec 17 21:40:54.500 INFO [stderr] 7 | use std::io::{self, Read};
Dec 17 21:40:54.500 INFO [stderr]   |                     ^^^^
Dec 17 21:40:54.500 INFO [stderr]   |
Dec 17 21:40:54.500 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 21:40:54.500 INFO [stderr] 
Dec 17 21:40:54.642 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
Dec 17 21:40:54.901 INFO running `"docker" "inspect" "b8f6f589ce7fe8ec6fe6e8a41f8ebd7670fdfcfa645cd9241295d71b798e0fe7"`
Dec 17 21:40:55.046 INFO running `"docker" "rm" "-f" "b8f6f589ce7fe8ec6fe6e8a41f8ebd7670fdfcfa645cd9241295d71b798e0fe7"`
Dec 17 21:40:55.261 INFO [stdout] b8f6f589ce7fe8ec6fe6e8a41f8ebd7670fdfcfa645cd9241295d71b798e0fe7