Dec 12 12:33:34.052 INFO checking json_flex-0.3.2 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 12:33:34.052 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 12 12:33:34.408 INFO [stdout] d94f632321d4d40548b4d877c5f7dd7536df400d5c6c41675dc93ae15cd2f32e
Dec 12 12:33:34.414 INFO running `"docker" "start" "-a" "d94f632321d4d40548b4d877c5f7dd7536df400d5c6c41675dc93ae15cd2f32e"`
Dec 12 12:33:36.512 INFO [stderr] usermod: no changes
Dec 12 12:33:36.624 INFO [stderr]     Checking json_flex v0.3.2 (/source)
Dec 12 12:33:38.000 INFO [stderr] warning: unused import: `std::fs::File`
Dec 12 12:33:38.001 INFO [stderr]  --> src/test.rs:4:5
Dec 12 12:33:38.001 INFO [stderr]   |
Dec 12 12:33:38.001 INFO [stderr] 4 | use std::fs::File;
Dec 12 12:33:38.001 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 12 12:33:38.002 INFO [stderr]   |
Dec 12 12:33:38.002 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 12:33:38.002 INFO [stderr] 
Dec 12 12:33:38.002 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 12 12:33:38.002 INFO [stderr]  --> src/test.rs:5:5
Dec 12 12:33:38.003 INFO [stderr]   |
Dec 12 12:33:38.003 INFO [stderr] 5 | use std::io::prelude::*;
Dec 12 12:33:38.003 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 12 12:33:38.003 INFO [stderr] 
Dec 12 12:33:39.111 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.56s
Dec 12 12:33:39.113 INFO [stderr] su: No module specific data is present
Dec 12 12:33:40.022 INFO running `"docker" "inspect" "d94f632321d4d40548b4d877c5f7dd7536df400d5c6c41675dc93ae15cd2f32e"`
Dec 12 12:33:40.472 INFO running `"docker" "rm" "-f" "d94f632321d4d40548b4d877c5f7dd7536df400d5c6c41675dc93ae15cd2f32e"`
Dec 12 12:33:40.756 INFO [stdout] d94f632321d4d40548b4d877c5f7dd7536df400d5c6c41675dc93ae15cd2f32e