Nov 04 05:06:22.627 INFO checking jfredett/synacor against try#e740b9aa0b624fa39feb39613e76d15bdf57e594 for pr-55655
Nov 04 05:06:22.627 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55655/worker-1/try#e740b9aa0b624fa39feb39613e76d15bdf57e594:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55655/try#e740b9aa0b624fa39feb39613e76d15bdf57e594:/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 +e740b9aa0b624fa39feb39613e76d15bdf57e594-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 04 05:06:23.339 INFO blam! f0cbf67705e0bf2efc966c37cadd294356d4a7f0433f21cd955482c24443c5f5
Nov 04 05:06:23.348 INFO running `"docker" "start" "-a" "f0cbf67705e0bf2efc966c37cadd294356d4a7f0433f21cd955482c24443c5f5"`
Nov 04 05:06:24.107 INFO kablam! usermod: no changes
Nov 04 05:06:24.195 INFO kablam!     Checking synacor v0.1.0 (/source)
Nov 04 05:06:25.614 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 04 05:06:25.615 INFO kablam!    --> src/vm.rs:186:9
Nov 04 05:06:25.615 INFO kablam!     |
Nov 04 05:06:25.616 INFO kablam! 186 |         stdin.read_exact(&mut buf);
Nov 04 05:06:25.617 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 04 05:06:25.617 INFO kablam!     |
Nov 04 05:06:25.618 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Nov 04 05:06:25.618 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Nov 04 05:06:25.619 INFO kablam! 
Nov 04 05:06:28.116 INFO kablam! warning: unused arithmetic operation that must be used
Nov 04 05:06:28.117 INFO kablam!    --> src/u15.rs:163:30
Nov 04 05:06:28.117 INFO kablam!     |
Nov 04 05:06:28.117 INFO kablam! 163 |         fn sub_underflow() { u15(0) - u15(2); }
Nov 04 05:06:28.117 INFO kablam!     |                              ^^^^^^^^^^^^^^^
Nov 04 05:06:28.118 INFO kablam!     |
Nov 04 05:06:28.118 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Nov 04 05:06:28.118 INFO kablam! 
Nov 04 05:06:28.119 INFO kablam! warning: unused arithmetic operation that must be used
Nov 04 05:06:28.119 INFO kablam!    --> src/u15.rs:167:28
Nov 04 05:06:28.119 INFO kablam!     |
Nov 04 05:06:28.120 INFO kablam! 167 |         fn div_by_zero() { u15(1) / u15(0); }
Nov 04 05:06:28.120 INFO kablam!     |                            ^^^^^^^^^^^^^^^
Nov 04 05:06:28.120 INFO kablam! 
Nov 04 05:06:28.121 INFO kablam! warning: unused arithmetic operation that must be used
Nov 04 05:06:28.121 INFO kablam!    --> src/u15.rs:223:26
Nov 04 05:06:28.121 INFO kablam!     |
Nov 04 05:06:28.122 INFO kablam! 223 |         fn sub_panic() { u15(16) - u15(17); }
Nov 04 05:06:28.122 INFO kablam!     |                          ^^^^^^^^^^^^^^^^^
Nov 04 05:06:28.122 INFO kablam! 
Nov 04 05:06:28.172 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 04 05:06:28.172 INFO kablam!    --> src/vm.rs:186:9
Nov 04 05:06:28.172 INFO kablam!     |
Nov 04 05:06:28.172 INFO kablam! 186 |         stdin.read_exact(&mut buf);
Nov 04 05:06:28.172 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 04 05:06:28.172 INFO kablam!     |
Nov 04 05:06:28.172 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Nov 04 05:06:28.172 INFO kablam! 
Nov 04 05:06:28.232 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.09s
Nov 04 05:06:28.237 INFO kablam! su: No module specific data is present
Nov 04 05:06:28.527 INFO running `"docker" "rm" "-f" "f0cbf67705e0bf2efc966c37cadd294356d4a7f0433f21cd955482c24443c5f5"`
Nov 04 05:06:28.647 INFO blam! f0cbf67705e0bf2efc966c37cadd294356d4a7f0433f21cd955482c24443c5f5