Oct 27 02:58:00.260 INFO checking jfredett/synacor against try#19f01b935b91481fd445b16b533d2f87661bf12e for pr-55192-2
Oct 27 02:58:00.262 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-55192-2/worker-4/try#19f01b935b91481fd445b16b533d2f87661bf12e:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-4/pr-55192-2/try#19f01b935b91481fd445b16b533d2f87661bf12e:/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 +19f01b935b91481fd445b16b533d2f87661bf12e-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 27 02:58:00.591 INFO blam! 65ba215160bc5083abfd9b77bcfb51d701130eedb02a89bf8f0b6f5b1eb1147d
Oct 27 02:58:00.599 INFO running `"docker" "start" "-a" "65ba215160bc5083abfd9b77bcfb51d701130eedb02a89bf8f0b6f5b1eb1147d"`
Oct 27 02:58:01.643 INFO kablam! usermod: no changes
Oct 27 02:58:01.731 INFO kablam!     Checking synacor v0.1.0 (/source)
Oct 27 02:58:02.927 INFO kablam! warning: unused `std::result::Result` that must be used
Oct 27 02:58:02.927 INFO kablam!    --> src/vm.rs:186:9
Oct 27 02:58:02.927 INFO kablam!     |
Oct 27 02:58:02.927 INFO kablam! 186 |         stdin.read_exact(&mut buf);
Oct 27 02:58:02.927 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 02:58:02.927 INFO kablam!     |
Oct 27 02:58:02.927 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Oct 27 02:58:02.927 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Oct 27 02:58:02.927 INFO kablam! 
Oct 27 02:58:05.947 INFO kablam! warning: unused arithmetic operation that must be used
Oct 27 02:58:05.947 INFO kablam!    --> src/u15.rs:163:30
Oct 27 02:58:05.947 INFO kablam!     |
Oct 27 02:58:05.947 INFO kablam! 163 |         fn sub_underflow() { u15(0) - u15(2); }
Oct 27 02:58:05.947 INFO kablam!     |                              ^^^^^^^^^^^^^^^
Oct 27 02:58:05.947 INFO kablam!     |
Oct 27 02:58:05.947 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Oct 27 02:58:05.947 INFO kablam! 
Oct 27 02:58:05.947 INFO kablam! warning: unused arithmetic operation that must be used
Oct 27 02:58:05.947 INFO kablam!    --> src/u15.rs:167:28
Oct 27 02:58:05.947 INFO kablam!     |
Oct 27 02:58:05.947 INFO kablam! 167 |         fn div_by_zero() { u15(1) / u15(0); }
Oct 27 02:58:05.947 INFO kablam!     |                            ^^^^^^^^^^^^^^^
Oct 27 02:58:05.947 INFO kablam! 
Oct 27 02:58:05.951 INFO kablam! warning: unused arithmetic operation that must be used
Oct 27 02:58:05.951 INFO kablam!    --> src/u15.rs:223:26
Oct 27 02:58:05.951 INFO kablam!     |
Oct 27 02:58:05.951 INFO kablam! 223 |         fn sub_panic() { u15(16) - u15(17); }
Oct 27 02:58:05.951 INFO kablam!     |                          ^^^^^^^^^^^^^^^^^
Oct 27 02:58:05.951 INFO kablam! 
Oct 27 02:58:06.014 INFO kablam! warning: unused `std::result::Result` that must be used
Oct 27 02:58:06.014 INFO kablam!    --> src/vm.rs:186:9
Oct 27 02:58:06.014 INFO kablam!     |
Oct 27 02:58:06.015 INFO kablam! 186 |         stdin.read_exact(&mut buf);
Oct 27 02:58:06.015 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 02:58:06.015 INFO kablam!     |
Oct 27 02:58:06.015 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Oct 27 02:58:06.015 INFO kablam! 
Oct 27 02:58:06.090 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.43s
Oct 27 02:58:06.098 INFO kablam! su: No module specific data is present
Oct 27 02:58:06.435 INFO running `"docker" "rm" "-f" "65ba215160bc5083abfd9b77bcfb51d701130eedb02a89bf8f0b6f5b1eb1147d"`
Oct 27 02:58:06.583 INFO blam! 65ba215160bc5083abfd9b77bcfb51d701130eedb02a89bf8f0b6f5b1eb1147d