Dec 18 04:27:33.430 INFO checking ahamid/rxor against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 04:27:33.430 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 04:27:33.648 INFO [stdout] 77c9b55057ff066b3c78af500437439c0ead041f4ae12e8bfc93f2d1ed564101
Dec 18 04:27:33.654 INFO running `"docker" "start" "-a" "77c9b55057ff066b3c78af500437439c0ead041f4ae12e8bfc93f2d1ed564101"`
Dec 18 04:27:34.515 INFO [stderr]     Checking rxor v0.1.0 (/opt/crater/workdir)
Dec 18 04:27:34.925 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:27:34.925 INFO [stderr]   --> src/main.rs:26:5
Dec 18 04:27:34.925 INFO [stderr]    |
Dec 18 04:27:34.925 INFO [stderr] 26 |     w.write_all(&[b0 ^ b1]);
Dec 18 04:27:34.925 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:27:34.925 INFO [stderr]    |
Dec 18 04:27:34.925 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 04:27:34.925 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:27:34.925 INFO [stderr] 
Dec 18 04:27:34.925 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:27:34.925 INFO [stderr]   --> src/main.rs:28:3
Dec 18 04:27:34.925 INFO [stderr]    |
Dec 18 04:27:34.925 INFO [stderr] 28 |   w.flush();
Dec 18 04:27:34.925 INFO [stderr]    |   ^^^^^^^^^^
Dec 18 04:27:34.925 INFO [stderr]    |
Dec 18 04:27:34.925 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:27:34.925 INFO [stderr] 
Dec 18 04:27:34.992 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:27:34.992 INFO [stderr]   --> src/main.rs:26:5
Dec 18 04:27:34.992 INFO [stderr]    |
Dec 18 04:27:34.992 INFO [stderr] 26 |     w.write_all(&[b0 ^ b1]);
Dec 18 04:27:34.992 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:27:34.992 INFO [stderr]    |
Dec 18 04:27:34.992 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 04:27:34.992 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:27:34.992 INFO [stderr] 
Dec 18 04:27:34.992 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:27:34.992 INFO [stderr]   --> src/main.rs:28:3
Dec 18 04:27:34.992 INFO [stderr]    |
Dec 18 04:27:34.992 INFO [stderr] 28 |   w.flush();
Dec 18 04:27:34.992 INFO [stderr]    |   ^^^^^^^^^^
Dec 18 04:27:34.992 INFO [stderr]    |
Dec 18 04:27:34.992 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:27:34.992 INFO [stderr] 
Dec 18 04:27:35.020 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
Dec 18 04:27:35.561 INFO running `"docker" "inspect" "77c9b55057ff066b3c78af500437439c0ead041f4ae12e8bfc93f2d1ed564101"`
Dec 18 04:27:35.854 INFO running `"docker" "rm" "-f" "77c9b55057ff066b3c78af500437439c0ead041f4ae12e8bfc93f2d1ed564101"`
Dec 18 04:27:36.168 INFO [stdout] 77c9b55057ff066b3c78af500437439c0ead041f4ae12e8bfc93f2d1ed564101