Dec 12 12:33:33.861 INFO checking json_flex-0.3.2 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 12:33:33.861 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 12 12:33:34.256 INFO [stdout] d86704ffcc659ec8078b01608e22e54c0d72a972d352e98a50cf71d928d8b83b
Dec 12 12:33:34.258 INFO running `"docker" "start" "-a" "d86704ffcc659ec8078b01608e22e54c0d72a972d352e98a50cf71d928d8b83b"`
Dec 12 12:33:35.923 INFO [stderr] usermod: no changes
Dec 12 12:33:35.976 INFO [stderr]     Checking json_flex v0.3.2 (/source)
Dec 12 12:33:37.244 INFO [stderr] warning: unused import: `std::fs::File`
Dec 12 12:33:37.244 INFO [stderr]  --> src/test.rs:4:5
Dec 12 12:33:37.244 INFO [stderr]   |
Dec 12 12:33:37.244 INFO [stderr] 4 | use std::fs::File;
Dec 12 12:33:37.244 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 12 12:33:37.244 INFO [stderr]   |
Dec 12 12:33:37.244 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 12:33:37.244 INFO [stderr] 
Dec 12 12:33:37.244 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 12 12:33:37.244 INFO [stderr]  --> src/test.rs:5:5
Dec 12 12:33:37.244 INFO [stderr]   |
Dec 12 12:33:37.244 INFO [stderr] 5 | use std::io::prelude::*;
Dec 12 12:33:37.244 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 12 12:33:37.244 INFO [stderr] 
Dec 12 12:33:38.267 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.33s
Dec 12 12:33:38.278 INFO [stderr] su: No module specific data is present
Dec 12 12:33:39.492 INFO running `"docker" "inspect" "d86704ffcc659ec8078b01608e22e54c0d72a972d352e98a50cf71d928d8b83b"`
Dec 12 12:33:39.800 INFO running `"docker" "rm" "-f" "d86704ffcc659ec8078b01608e22e54c0d72a972d352e98a50cf71d928d8b83b"`
Dec 12 12:33:40.108 INFO [stdout] d86704ffcc659ec8078b01608e22e54c0d72a972d352e98a50cf71d928d8b83b