Nov 02 12:42:38.936 INFO checking jfredett/synacor against try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7 for pr-55517
Nov 02 12:42:38.936 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55517/worker-6/try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55517/try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7:/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 +dc8b02d6f1e93f212fc39844ea688b634b4a03c7-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 02 12:42:40.760 INFO blam! 0a5c12095aea260e7218eb289a8493fffe090a1cfd410d36472bfd7652745c51
Nov 02 12:42:40.768 INFO running `"docker" "start" "-a" "0a5c12095aea260e7218eb289a8493fffe090a1cfd410d36472bfd7652745c51"`
Nov 02 12:42:41.333 INFO kablam! usermod: no changes
Nov 02 12:42:41.402 INFO kablam!     Checking synacor v0.1.0 (/source)
Nov 02 12:42:42.648 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 02 12:42:42.648 INFO kablam!    --> src/vm.rs:186:9
Nov 02 12:42:42.648 INFO kablam!     |
Nov 02 12:42:42.648 INFO kablam! 186 |         stdin.read_exact(&mut buf);
Nov 02 12:42:42.648 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 02 12:42:42.648 INFO kablam!     |
Nov 02 12:42:42.648 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Nov 02 12:42:42.648 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Nov 02 12:42:42.649 INFO kablam! 
Nov 02 12:42:46.852 INFO kablam! warning: unused arithmetic operation that must be used
Nov 02 12:42:46.853 INFO kablam!    --> src/u15.rs:163:30
Nov 02 12:42:46.854 INFO kablam!     |
Nov 02 12:42:46.854 INFO kablam! 163 |         fn sub_underflow() { u15(0) - u15(2); }
Nov 02 12:42:46.855 INFO kablam!     |                              ^^^^^^^^^^^^^^^
Nov 02 12:42:46.855 INFO kablam!     |
Nov 02 12:42:46.856 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Nov 02 12:42:46.856 INFO kablam! 
Nov 02 12:42:46.857 INFO kablam! warning: unused arithmetic operation that must be used
Nov 02 12:42:46.858 INFO kablam!    --> src/u15.rs:167:28
Nov 02 12:42:46.859 INFO kablam!     |
Nov 02 12:42:46.859 INFO kablam! 167 |         fn div_by_zero() { u15(1) / u15(0); }
Nov 02 12:42:46.860 INFO kablam!     |                            ^^^^^^^^^^^^^^^
Nov 02 12:42:46.860 INFO kablam! 
Nov 02 12:42:46.864 INFO kablam! warning: unused arithmetic operation that must be used
Nov 02 12:42:46.865 INFO kablam!    --> src/u15.rs:223:26
Nov 02 12:42:46.865 INFO kablam!     |
Nov 02 12:42:46.866 INFO kablam! 223 |         fn sub_panic() { u15(16) - u15(17); }
Nov 02 12:42:46.866 INFO kablam!     |                          ^^^^^^^^^^^^^^^^^
Nov 02 12:42:46.867 INFO kablam! 
Nov 02 12:42:46.924 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 02 12:42:46.924 INFO kablam!    --> src/vm.rs:186:9
Nov 02 12:42:46.925 INFO kablam!     |
Nov 02 12:42:46.925 INFO kablam! 186 |         stdin.read_exact(&mut buf);
Nov 02 12:42:46.925 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 02 12:42:46.926 INFO kablam!     |
Nov 02 12:42:46.926 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Nov 02 12:42:46.926 INFO kablam! 
Nov 02 12:42:47.043 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.68s
Nov 02 12:42:47.048 INFO kablam! su: No module specific data is present
Nov 02 12:42:47.439 INFO running `"docker" "rm" "-f" "0a5c12095aea260e7218eb289a8493fffe090a1cfd410d36472bfd7652745c51"`
Nov 02 12:42:47.672 INFO blam! 0a5c12095aea260e7218eb289a8493fffe090a1cfd410d36472bfd7652745c51