Nov 06 20:05:12.841 INFO checking jfredett/synacor against master#24e66c28980442a48d9458f1a4f9b76cc722dc8a for pr-55687
Nov 06 20:05:12.841 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55687/worker-6/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55687/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/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 +24e66c28980442a48d9458f1a4f9b76cc722dc8a-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"`
Nov 06 20:05:13.060 INFO blam! 2a54b61ca48516363c4a4a06b5b9d6e57aec17a9d05afe76e2635563a132ec37
Nov 06 20:05:13.062 INFO running `"docker" "start" "-a" "2a54b61ca48516363c4a4a06b5b9d6e57aec17a9d05afe76e2635563a132ec37"`
Nov 06 20:05:13.891 INFO kablam! usermod: no changes
Nov 06 20:05:13.988 INFO kablam!     Checking atty v0.2.3
Nov 06 20:05:14.458 INFO kablam!     Checking clap v2.29.0
Nov 06 20:05:21.942 INFO kablam!     Checking synacor v0.1.0 (/source)
Nov 06 20:05:22.768 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 06 20:05:22.768 INFO kablam!    --> src/vm.rs:186:9
Nov 06 20:05:22.768 INFO kablam!     |
Nov 06 20:05:22.768 INFO kablam! 186 |         stdin.read_exact(&mut buf);
Nov 06 20:05:22.768 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 06 20:05:22.768 INFO kablam!     |
Nov 06 20:05:22.768 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Nov 06 20:05:22.768 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Nov 06 20:05:22.768 INFO kablam! 
Nov 06 20:05:26.385 INFO kablam! warning: unused arithmetic operation that must be used
Nov 06 20:05:26.386 INFO kablam!    --> src/u15.rs:163:30
Nov 06 20:05:26.386 INFO kablam!     |
Nov 06 20:05:26.386 INFO kablam! 163 |         fn sub_underflow() { u15(0) - u15(2); }
Nov 06 20:05:26.386 INFO kablam!     |                              ^^^^^^^^^^^^^^^
Nov 06 20:05:26.387 INFO kablam!     |
Nov 06 20:05:26.387 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Nov 06 20:05:26.387 INFO kablam! 
Nov 06 20:05:26.387 INFO kablam! warning: unused arithmetic operation that must be used
Nov 06 20:05:26.387 INFO kablam!    --> src/u15.rs:167:28
Nov 06 20:05:26.387 INFO kablam!     |
Nov 06 20:05:26.387 INFO kablam! 167 |         fn div_by_zero() { u15(1) / u15(0); }
Nov 06 20:05:26.388 INFO kablam!     |                            ^^^^^^^^^^^^^^^
Nov 06 20:05:26.388 INFO kablam! 
Nov 06 20:05:26.391 INFO kablam! warning: unused arithmetic operation that must be used
Nov 06 20:05:26.391 INFO kablam!    --> src/u15.rs:223:26
Nov 06 20:05:26.391 INFO kablam!     |
Nov 06 20:05:26.391 INFO kablam! 223 |         fn sub_panic() { u15(16) - u15(17); }
Nov 06 20:05:26.391 INFO kablam!     |                          ^^^^^^^^^^^^^^^^^
Nov 06 20:05:26.392 INFO kablam! 
Nov 06 20:05:26.446 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 06 20:05:26.446 INFO kablam!    --> src/vm.rs:186:9
Nov 06 20:05:26.446 INFO kablam!     |
Nov 06 20:05:26.446 INFO kablam! 186 |         stdin.read_exact(&mut buf);
Nov 06 20:05:26.446 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 06 20:05:26.446 INFO kablam!     |
Nov 06 20:05:26.447 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Nov 06 20:05:26.447 INFO kablam! 
Nov 06 20:05:26.507 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 12.58s
Nov 06 20:05:26.527 INFO kablam! su: No module specific data is present
Nov 06 20:05:27.810 INFO running `"docker" "rm" "-f" "2a54b61ca48516363c4a4a06b5b9d6e57aec17a9d05afe76e2635563a132ec37"`
Nov 06 20:05:28.244 INFO blam! 2a54b61ca48516363c4a4a06b5b9d6e57aec17a9d05afe76e2635563a132ec37