Dec 04 13:05:07.796 INFO checking notexactlyawe/rust-hangman against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 13:05:07.796 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 13:05:08.498 INFO [stdout] 8153647676d2d1344313227b402b5f7f776886f9e18ba8dc9ebed04dfe43b482
Dec 04 13:05:08.500 INFO running `"docker" "start" "-a" "8153647676d2d1344313227b402b5f7f776886f9e18ba8dc9ebed04dfe43b482"`
Dec 04 13:05:10.730 INFO [stderr] usermod: no changes
Dec 04 13:05:10.895 INFO [stderr]     Checking rand v0.3.17
Dec 04 13:05:12.467 INFO [stderr]     Checking hangman v0.0.1 (/source)
Dec 04 13:05:12.955 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 13:05:12.955 INFO [stderr]   --> src/main.rs:15:5
Dec 04 13:05:12.955 INFO [stderr]    |
Dec 04 13:05:12.955 INFO [stderr] 15 |     f.read_to_string(&mut f_buf);
Dec 04 13:05:12.955 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:05:12.955 INFO [stderr]    |
Dec 04 13:05:12.955 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 13:05:12.955 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 13:05:12.955 INFO [stderr] 
Dec 04 13:05:13.027 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 13:05:13.027 INFO [stderr]   --> src/main.rs:15:5
Dec 04 13:05:13.027 INFO [stderr]    |
Dec 04 13:05:13.027 INFO [stderr] 15 |     f.read_to_string(&mut f_buf);
Dec 04 13:05:13.027 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:05:13.027 INFO [stderr]    |
Dec 04 13:05:13.027 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 13:05:13.027 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 13:05:13.027 INFO [stderr] 
Dec 04 13:05:13.073 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.27s
Dec 04 13:05:13.079 INFO [stderr] su: No module specific data is present
Dec 04 13:05:14.065 INFO running `"docker" "inspect" "8153647676d2d1344313227b402b5f7f776886f9e18ba8dc9ebed04dfe43b482"`
Dec 04 13:05:14.341 INFO running `"docker" "rm" "-f" "8153647676d2d1344313227b402b5f7f776886f9e18ba8dc9ebed04dfe43b482"`
Dec 04 13:05:14.739 INFO [stdout] 8153647676d2d1344313227b402b5f7f776886f9e18ba8dc9ebed04dfe43b482