Dec 11 23:06:41.474 INFO checking ahamid/rxor against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 23:06:41.474 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 23:06:42.030 INFO [stdout] 25fe86ad976a71cc7b0bc7505890c0e5107c0d29b62f4f2e5073c7eaa688efc4
Dec 11 23:06:42.031 INFO running `"docker" "start" "-a" "25fe86ad976a71cc7b0bc7505890c0e5107c0d29b62f4f2e5073c7eaa688efc4"`
Dec 11 23:06:43.508 INFO [stderr] usermod: no changes
Dec 11 23:06:43.560 INFO [stderr]     Checking rxor v0.1.0 (/source)
Dec 11 23:06:44.276 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 23:06:44.276 INFO [stderr]   --> src/main.rs:26:5
Dec 11 23:06:44.276 INFO [stderr]    |
Dec 11 23:06:44.276 INFO [stderr] 26 |     w.write_all(&[b0 ^ b1]);
Dec 11 23:06:44.276 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 23:06:44.276 INFO [stderr]    |
Dec 11 23:06:44.276 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 23:06:44.276 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 23:06:44.276 INFO [stderr] 
Dec 11 23:06:44.276 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 23:06:44.276 INFO [stderr]   --> src/main.rs:28:3
Dec 11 23:06:44.276 INFO [stderr]    |
Dec 11 23:06:44.276 INFO [stderr] 28 |   w.flush();
Dec 11 23:06:44.276 INFO [stderr]    |   ^^^^^^^^^^
Dec 11 23:06:44.276 INFO [stderr]    |
Dec 11 23:06:44.276 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 23:06:44.276 INFO [stderr] 
Dec 11 23:06:44.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 23:06:44.296 INFO [stderr]   --> src/main.rs:26:5
Dec 11 23:06:44.296 INFO [stderr]    |
Dec 11 23:06:44.296 INFO [stderr] 26 |     w.write_all(&[b0 ^ b1]);
Dec 11 23:06:44.296 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 23:06:44.296 INFO [stderr]    |
Dec 11 23:06:44.296 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 23:06:44.296 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 23:06:44.296 INFO [stderr] 
Dec 11 23:06:44.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 23:06:44.296 INFO [stderr]   --> src/main.rs:28:3
Dec 11 23:06:44.296 INFO [stderr]    |
Dec 11 23:06:44.297 INFO [stderr] 28 |   w.flush();
Dec 11 23:06:44.297 INFO [stderr]    |   ^^^^^^^^^^
Dec 11 23:06:44.297 INFO [stderr]    |
Dec 11 23:06:44.297 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 23:06:44.297 INFO [stderr] 
Dec 11 23:06:44.340 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
Dec 11 23:06:44.340 INFO [stderr] su: No module specific data is present
Dec 11 23:06:45.162 INFO running `"docker" "inspect" "25fe86ad976a71cc7b0bc7505890c0e5107c0d29b62f4f2e5073c7eaa688efc4"`
Dec 11 23:06:45.412 INFO running `"docker" "rm" "-f" "25fe86ad976a71cc7b0bc7505890c0e5107c0d29b62f4f2e5073c7eaa688efc4"`
Dec 11 23:06:45.794 INFO [stdout] 25fe86ad976a71cc7b0bc7505890c0e5107c0d29b62f4f2e5073c7eaa688efc4