Dec 12 22:47:23.668 INFO testing upenn-cis198-2018f/Lecture6 against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 12 22:47:23.668 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-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 22:47:23.870 INFO [stdout] eaa62d2dcadbba4e66966d8671c53a4da49550b7c9587d26141c59d83989d712
Dec 12 22:47:23.873 INFO running `"docker" "start" "-a" "eaa62d2dcadbba4e66966d8671c53a4da49550b7c9587d26141c59d83989d712"`
Dec 12 22:47:24.451 INFO [stderr] usermod: no changes
Dec 12 22:47:24.478 INFO [stderr]    Compiling lecture6 v0.1.0 (/source)
Dec 12 22:47:24.632 INFO [stderr] warning: unused import: `std::fmt::Display`
Dec 12 22:47:24.632 INFO [stderr]  --> src/generics.rs:4:5
Dec 12 22:47:24.632 INFO [stderr]   |
Dec 12 22:47:24.632 INFO [stderr] 4 | use std::fmt::Display;
Dec 12 22:47:24.632 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 12 22:47:24.632 INFO [stderr]   |
Dec 12 22:47:24.632 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 22:47:24.632 INFO [stderr] 
Dec 12 22:47:24.821 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
Dec 12 22:47:24.821 INFO [stderr] su: No module specific data is present
Dec 12 22:47:25.116 INFO running `"docker" "inspect" "eaa62d2dcadbba4e66966d8671c53a4da49550b7c9587d26141c59d83989d712"`
Dec 12 22:47:25.205 INFO running `"docker" "rm" "-f" "eaa62d2dcadbba4e66966d8671c53a4da49550b7c9587d26141c59d83989d712"`
Dec 12 22:47:25.323 INFO [stdout] eaa62d2dcadbba4e66966d8671c53a4da49550b7c9587d26141c59d83989d712
Dec 12 22:47:25.327 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen --no-run" "-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 22:47:25.546 INFO [stdout] f4de84cd7c14bb7d3e2c091630946ccf9641e44dddb4e261f2479ec427aee6b7
Dec 12 22:47:25.548 INFO running `"docker" "start" "-a" "f4de84cd7c14bb7d3e2c091630946ccf9641e44dddb4e261f2479ec427aee6b7"`
Dec 12 22:47:26.157 INFO [stderr] usermod: no changes
Dec 12 22:47:26.183 INFO [stderr]    Compiling lecture6 v0.1.0 (/source)
Dec 12 22:47:26.347 INFO [stderr] warning: unused import: `std::fmt::Display`
Dec 12 22:47:26.347 INFO [stderr]  --> src/generics.rs:4:5
Dec 12 22:47:26.347 INFO [stderr]   |
Dec 12 22:47:26.347 INFO [stderr] 4 | use std::fmt::Display;
Dec 12 22:47:26.347 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 12 22:47:26.347 INFO [stderr]   |
Dec 12 22:47:26.347 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 22:47:26.347 INFO [stderr] 
Dec 12 22:47:26.595 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
Dec 12 22:47:26.597 INFO [stderr] su: No module specific data is present
Dec 12 22:47:26.929 INFO running `"docker" "inspect" "f4de84cd7c14bb7d3e2c091630946ccf9641e44dddb4e261f2479ec427aee6b7"`
Dec 12 22:47:27.009 INFO running `"docker" "rm" "-f" "f4de84cd7c14bb7d3e2c091630946ccf9641e44dddb4e261f2479ec427aee6b7"`
Dec 12 22:47:27.155 INFO [stdout] f4de84cd7c14bb7d3e2c091630946ccf9641e44dddb4e261f2479ec427aee6b7
Dec 12 22:47:27.160 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen" "-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 22:47:27.387 INFO [stdout] 081357e611b10e80c7838f0749747145ea08c0ab01ad4877deac775fbd2b043b
Dec 12 22:47:27.392 INFO running `"docker" "start" "-a" "081357e611b10e80c7838f0749747145ea08c0ab01ad4877deac775fbd2b043b"`
Dec 12 22:47:27.869 INFO [stderr] usermod: no changes
Dec 12 22:47:27.908 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 12 22:47:27.908 INFO [stderr]      Running /target/debug/deps/lecture6-e3a8fbd793330755
Dec 12 22:47:27.915 INFO [stdout] 
Dec 12 22:47:27.915 INFO [stdout] running 0 tests
Dec 12 22:47:27.915 INFO [stdout] 
Dec 12 22:47:27.915 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 12 22:47:27.915 INFO [stdout] 
Dec 12 22:47:27.919 INFO [stderr] su: No module specific data is present
Dec 12 22:47:28.213 INFO running `"docker" "inspect" "081357e611b10e80c7838f0749747145ea08c0ab01ad4877deac775fbd2b043b"`
Dec 12 22:47:28.326 INFO running `"docker" "rm" "-f" "081357e611b10e80c7838f0749747145ea08c0ab01ad4877deac775fbd2b043b"`
Dec 12 22:47:28.423 INFO [stdout] 081357e611b10e80c7838f0749747145ea08c0ab01ad4877deac775fbd2b043b