Dec 04 07:52:20.144 INFO checking upenn-cis198-2018f/Lecture6 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 07:52:20.144 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 07:52:20.579 INFO [stdout] 4698a46dbcb34e0152f1a21dd093acea2a6cf3b954755e039c3fda48475f49fc
Dec 04 07:52:20.587 INFO running `"docker" "start" "-a" "4698a46dbcb34e0152f1a21dd093acea2a6cf3b954755e039c3fda48475f49fc"`
Dec 04 07:52:21.336 INFO [stderr] usermod: no changes
Dec 04 07:52:21.376 INFO [stderr]     Checking lecture6 v0.1.0 (/source)
Dec 04 07:52:21.595 INFO [stderr] warning: unused import: `std::fmt::Display`
Dec 04 07:52:21.595 INFO [stderr]  --> src/generics.rs:4:5
Dec 04 07:52:21.595 INFO [stderr]   |
Dec 04 07:52:21.595 INFO [stderr] 4 | use std::fmt::Display;
Dec 04 07:52:21.595 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 04 07:52:21.595 INFO [stderr]   |
Dec 04 07:52:21.595 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 07:52:21.595 INFO [stderr] 
Dec 04 07:52:21.615 INFO [stderr] warning: unused import: `std::fmt::Display`
Dec 04 07:52:21.615 INFO [stderr]  --> src/generics.rs:4:5
Dec 04 07:52:21.615 INFO [stderr]   |
Dec 04 07:52:21.615 INFO [stderr] 4 | use std::fmt::Display;
Dec 04 07:52:21.615 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 04 07:52:21.615 INFO [stderr]   |
Dec 04 07:52:21.615 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 07:52:21.615 INFO [stderr] 
Dec 04 07:52:21.643 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
Dec 04 07:52:21.647 INFO [stderr] su: No module specific data is present
Dec 04 07:52:22.044 INFO running `"docker" "inspect" "4698a46dbcb34e0152f1a21dd093acea2a6cf3b954755e039c3fda48475f49fc"`
Dec 04 07:52:22.157 INFO running `"docker" "rm" "-f" "4698a46dbcb34e0152f1a21dd093acea2a6cf3b954755e039c3fda48475f49fc"`
Dec 04 07:52:22.303 INFO [stdout] 4698a46dbcb34e0152f1a21dd093acea2a6cf3b954755e039c3fda48475f49fc