Nov 01 03:15:37.604 INFO checking jfredett/synacor against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 03:15:37.604 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-7/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 01 03:15:37.882 INFO blam! ce5d7d30f9ceb889094e3a636b73b7aae67b61796056ee55a54cf6e832b6ae50
Nov 01 03:15:37.888 INFO running `"docker" "start" "-a" "ce5d7d30f9ceb889094e3a636b73b7aae67b61796056ee55a54cf6e832b6ae50"`
Nov 01 03:15:38.837 INFO kablam! usermod: no changes
Nov 01 03:15:38.896 INFO kablam!     Checking atty v0.2.3
Nov 01 03:15:39.194 INFO kablam!     Checking clap v2.29.0
Nov 01 03:15:46.366 INFO kablam!     Checking synacor v0.1.0 (/source)
Nov 01 03:15:47.044 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 01 03:15:47.044 INFO kablam!    --> src/vm.rs:186:9
Nov 01 03:15:47.044 INFO kablam!     |
Nov 01 03:15:47.044 INFO kablam! 186 |         stdin.read_exact(&mut buf);
Nov 01 03:15:47.044 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 03:15:47.044 INFO kablam!     |
Nov 01 03:15:47.044 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Nov 01 03:15:47.044 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 03:15:47.044 INFO kablam! 
Nov 01 03:15:49.802 INFO kablam! warning: unused arithmetic operation that must be used
Nov 01 03:15:49.802 INFO kablam!    --> src/u15.rs:163:30
Nov 01 03:15:49.802 INFO kablam!     |
Nov 01 03:15:49.802 INFO kablam! 163 |         fn sub_underflow() { u15(0) - u15(2); }
Nov 01 03:15:49.802 INFO kablam!     |                              ^^^^^^^^^^^^^^^
Nov 01 03:15:49.802 INFO kablam!     |
Nov 01 03:15:49.802 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Nov 01 03:15:49.802 INFO kablam! 
Nov 01 03:15:49.802 INFO kablam! warning: unused arithmetic operation that must be used
Nov 01 03:15:49.802 INFO kablam!    --> src/u15.rs:167:28
Nov 01 03:15:49.802 INFO kablam!     |
Nov 01 03:15:49.802 INFO kablam! 167 |         fn div_by_zero() { u15(1) / u15(0); }
Nov 01 03:15:49.802 INFO kablam!     |                            ^^^^^^^^^^^^^^^
Nov 01 03:15:49.802 INFO kablam! 
Nov 01 03:15:49.805 INFO kablam! warning: unused arithmetic operation that must be used
Nov 01 03:15:49.805 INFO kablam!    --> src/u15.rs:223:26
Nov 01 03:15:49.805 INFO kablam!     |
Nov 01 03:15:49.805 INFO kablam! 223 |         fn sub_panic() { u15(16) - u15(17); }
Nov 01 03:15:49.805 INFO kablam!     |                          ^^^^^^^^^^^^^^^^^
Nov 01 03:15:49.805 INFO kablam! 
Nov 01 03:15:49.860 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 01 03:15:49.860 INFO kablam!    --> src/vm.rs:186:9
Nov 01 03:15:49.860 INFO kablam!     |
Nov 01 03:15:49.860 INFO kablam! 186 |         stdin.read_exact(&mut buf);
Nov 01 03:15:49.860 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 03:15:49.860 INFO kablam!     |
Nov 01 03:15:49.860 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 03:15:49.860 INFO kablam! 
Nov 01 03:15:49.942 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 11.07s
Nov 01 03:15:49.942 INFO kablam! su: No module specific data is present
Nov 01 03:15:50.276 INFO running `"docker" "rm" "-f" "ce5d7d30f9ceb889094e3a636b73b7aae67b61796056ee55a54cf6e832b6ae50"`
Nov 01 03:15:50.488 INFO blam! ce5d7d30f9ceb889094e3a636b73b7aae67b61796056ee55a54cf6e832b6ae50