Dec 19 11:42:28.648 INFO checking notexactlyawe/rust-hangman against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 11:42:28.648 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/notexactlyawe/rust-hangman:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 11:42:29.056 INFO [stdout] d94447939aca1860edcee1a00630cc82351b66fda7b4f8fba23b4cda4f34ed25
Dec 19 11:42:29.058 INFO running `"docker" "start" "-a" "d94447939aca1860edcee1a00630cc82351b66fda7b4f8fba23b4cda4f34ed25"`
Dec 19 11:42:31.070 INFO [stderr]     Checking rand v0.3.17
Dec 19 11:42:32.446 INFO [stderr]     Checking hangman v0.0.1 (/opt/crater/workdir)
Dec 19 11:42:33.013 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 11:42:33.013 INFO [stderr]   --> src/main.rs:15:5
Dec 19 11:42:33.013 INFO [stderr]    |
Dec 19 11:42:33.013 INFO [stderr] 15 |     f.read_to_string(&mut f_buf);
Dec 19 11:42:33.013 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:42:33.013 INFO [stderr]    |
Dec 19 11:42:33.013 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 11:42:33.013 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 11:42:33.013 INFO [stderr] 
Dec 19 11:42:33.190 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 11:42:33.190 INFO [stderr]   --> src/main.rs:15:5
Dec 19 11:42:33.191 INFO [stderr]    |
Dec 19 11:42:33.191 INFO [stderr] 15 |     f.read_to_string(&mut f_buf);
Dec 19 11:42:33.191 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:42:33.191 INFO [stderr]    |
Dec 19 11:42:33.192 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 11:42:33.192 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 11:42:33.192 INFO [stderr] 
Dec 19 11:42:33.237 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.20s
Dec 19 11:42:34.356 INFO running `"docker" "inspect" "d94447939aca1860edcee1a00630cc82351b66fda7b4f8fba23b4cda4f34ed25"`
Dec 19 11:42:34.712 INFO running `"docker" "rm" "-f" "d94447939aca1860edcee1a00630cc82351b66fda7b4f8fba23b4cda4f34ed25"`
Dec 19 11:42:35.076 INFO [stdout] d94447939aca1860edcee1a00630cc82351b66fda7b4f8fba23b4cda4f34ed25