Oct 21 16:55:45.228 INFO checking jfredett/synacor against master#155510e377ae2a8d8ee0dad1a5f809c9062a5526 for pr-55192
Oct 21 16:55:45.228 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-55192/worker-6/master#155510e377ae2a8d8ee0dad1a5f809c9062a5526:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-6/pr-55192/master#155510e377ae2a8d8ee0dad1a5f809c9062a5526:/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 +155510e377ae2a8d8ee0dad1a5f809c9062a5526-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"`
Oct 21 16:55:45.567 INFO blam! ec5c483df2a4ada0869129f5559da3cf963d021b32d46f7865410df1b47d6c4f
Oct 21 16:55:45.568 INFO running `"docker" "start" "-a" "ec5c483df2a4ada0869129f5559da3cf963d021b32d46f7865410df1b47d6c4f"`
Oct 21 16:55:45.954 INFO kablam! usermod: no changes
Oct 21 16:55:46.004 INFO kablam!     Checking synacor v0.1.0 (/source)
Oct 21 16:55:46.829 INFO kablam! warning: unused `std::result::Result` that must be used
Oct 21 16:55:46.829 INFO kablam!    --> src/vm.rs:186:9
Oct 21 16:55:46.829 INFO kablam!     |
Oct 21 16:55:46.829 INFO kablam! 186 |         stdin.read_exact(&mut buf);
Oct 21 16:55:46.830 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 21 16:55:46.830 INFO kablam!     |
Oct 21 16:55:46.830 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Oct 21 16:55:46.830 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Oct 21 16:55:46.831 INFO kablam! 
Oct 21 16:55:49.203 INFO kablam! warning: unused arithmetic operation that must be used
Oct 21 16:55:49.204 INFO kablam!    --> src/u15.rs:163:30
Oct 21 16:55:49.204 INFO kablam!     |
Oct 21 16:55:49.204 INFO kablam! 163 |         fn sub_underflow() { u15(0) - u15(2); }
Oct 21 16:55:49.204 INFO kablam!     |                              ^^^^^^^^^^^^^^^
Oct 21 16:55:49.205 INFO kablam!     |
Oct 21 16:55:49.205 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Oct 21 16:55:49.205 INFO kablam! 
Oct 21 16:55:49.205 INFO kablam! warning: unused arithmetic operation that must be used
Oct 21 16:55:49.206 INFO kablam!    --> src/u15.rs:167:28
Oct 21 16:55:49.206 INFO kablam!     |
Oct 21 16:55:49.206 INFO kablam! 167 |         fn div_by_zero() { u15(1) / u15(0); }
Oct 21 16:55:49.206 INFO kablam!     |                            ^^^^^^^^^^^^^^^
Oct 21 16:55:49.207 INFO kablam! 
Oct 21 16:55:49.207 INFO kablam! warning: unused arithmetic operation that must be used
Oct 21 16:55:49.207 INFO kablam!    --> src/u15.rs:223:26
Oct 21 16:55:49.207 INFO kablam!     |
Oct 21 16:55:49.208 INFO kablam! 223 |         fn sub_panic() { u15(16) - u15(17); }
Oct 21 16:55:49.208 INFO kablam!     |                          ^^^^^^^^^^^^^^^^^
Oct 21 16:55:49.208 INFO kablam! 
Oct 21 16:55:49.248 INFO kablam! warning: unused `std::result::Result` that must be used
Oct 21 16:55:49.249 INFO kablam!    --> src/vm.rs:186:9
Oct 21 16:55:49.249 INFO kablam!     |
Oct 21 16:55:49.249 INFO kablam! 186 |         stdin.read_exact(&mut buf);
Oct 21 16:55:49.250 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 21 16:55:49.250 INFO kablam!     |
Oct 21 16:55:49.250 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Oct 21 16:55:49.250 INFO kablam! 
Oct 21 16:55:49.326 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.35s
Oct 21 16:55:49.330 INFO kablam! su: No module specific data is present
Oct 21 16:55:49.830 INFO running `"docker" "rm" "-f" "ec5c483df2a4ada0869129f5559da3cf963d021b32d46f7865410df1b47d6c4f"`
Oct 21 16:55:50.036 INFO blam! ec5c483df2a4ada0869129f5559da3cf963d021b32d46f7865410df1b47d6c4f