Dec 19 20:56:14.457 INFO checking ahamid/rxor against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 20:56:14.457 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/ahamid/rxor:/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 20:56:14.768 INFO [stdout] 304cc41208aecaba1e1efbbe09c48f9e60e8c39bf263e4eaa7199835d24e5115
Dec 19 20:56:14.768 INFO running `"docker" "start" "-a" "304cc41208aecaba1e1efbbe09c48f9e60e8c39bf263e4eaa7199835d24e5115"`
Dec 19 20:56:15.749 INFO [stderr]     Checking rxor v0.1.0 (/opt/crater/workdir)
Dec 19 20:56:15.978 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:56:15.978 INFO [stderr]   --> src/main.rs:26:5
Dec 19 20:56:15.978 INFO [stderr]    |
Dec 19 20:56:15.978 INFO [stderr] 26 |     w.write_all(&[b0 ^ b1]);
Dec 19 20:56:15.978 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:56:15.978 INFO [stderr]    |
Dec 19 20:56:15.978 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 20:56:15.978 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:56:15.978 INFO [stderr] 
Dec 19 20:56:15.978 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:56:15.978 INFO [stderr]   --> src/main.rs:28:3
Dec 19 20:56:15.978 INFO [stderr]    |
Dec 19 20:56:15.978 INFO [stderr] 28 |   w.flush();
Dec 19 20:56:15.978 INFO [stderr]    |   ^^^^^^^^^^
Dec 19 20:56:15.978 INFO [stderr]    |
Dec 19 20:56:15.978 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:56:15.978 INFO [stderr] 
Dec 19 20:56:16.054 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:56:16.054 INFO [stderr]   --> src/main.rs:26:5
Dec 19 20:56:16.054 INFO [stderr]    |
Dec 19 20:56:16.054 INFO [stderr] 26 |     w.write_all(&[b0 ^ b1]);
Dec 19 20:56:16.054 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:56:16.054 INFO [stderr]    |
Dec 19 20:56:16.054 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 20:56:16.054 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:56:16.054 INFO [stderr] 
Dec 19 20:56:16.054 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:56:16.054 INFO [stderr]   --> src/main.rs:28:3
Dec 19 20:56:16.054 INFO [stderr]    |
Dec 19 20:56:16.054 INFO [stderr] 28 |   w.flush();
Dec 19 20:56:16.054 INFO [stderr]    |   ^^^^^^^^^^
Dec 19 20:56:16.054 INFO [stderr]    |
Dec 19 20:56:16.054 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:56:16.054 INFO [stderr] 
Dec 19 20:56:16.072 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
Dec 19 20:56:16.392 INFO running `"docker" "inspect" "304cc41208aecaba1e1efbbe09c48f9e60e8c39bf263e4eaa7199835d24e5115"`
Dec 19 20:56:16.535 INFO running `"docker" "rm" "-f" "304cc41208aecaba1e1efbbe09c48f9e60e8c39bf263e4eaa7199835d24e5115"`
Dec 19 20:56:16.699 INFO [stdout] 304cc41208aecaba1e1efbbe09c48f9e60e8c39bf263e4eaa7199835d24e5115