Dec 19 15:21:12.593 INFO checking jbyte/chip8 against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 15:21:12.593 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/jbyte/chip8:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 15:21:12.997 INFO [stdout] ba6a86d3987f8550281bbd1347ce0e66ef2250df488befe0711a0d79d2e9c722
Dec 19 15:21:13.002 INFO running `"docker" "start" "-a" "ba6a86d3987f8550281bbd1347ce0e66ef2250df488befe0711a0d79d2e9c722"`
Dec 19 15:21:14.740 INFO [stderr]     Checking nom v2.2.0
Dec 19 15:21:16.864 INFO [stderr]     Checking chip8 v0.1.0 (/opt/crater/workdir)
Dec 19 15:21:17.364 INFO [stderr] warning: unused import: `std::borrow::Cow`
Dec 19 15:21:17.364 INFO [stderr]  --> src/debugger/mod.rs:5:5
Dec 19 15:21:17.364 INFO [stderr]   |
Dec 19 15:21:17.364 INFO [stderr] 5 | use std::borrow::Cow;
Dec 19 15:21:17.364 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 19 15:21:17.364 INFO [stderr]   |
Dec 19 15:21:17.364 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 15:21:17.364 INFO [stderr] 
Dec 19 15:21:17.372 INFO [stderr] warning: unused import: `std::borrow::Cow`
Dec 19 15:21:17.372 INFO [stderr]  --> src/debugger/mod.rs:5:5
Dec 19 15:21:17.372 INFO [stderr]   |
Dec 19 15:21:17.372 INFO [stderr] 5 | use std::borrow::Cow;
Dec 19 15:21:17.372 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 19 15:21:17.372 INFO [stderr]   |
Dec 19 15:21:17.372 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 15:21:17.372 INFO [stderr] 
Dec 19 15:21:17.752 INFO [stderr] warning: constant item is never used: `INTERPRETER_START`
Dec 19 15:21:17.752 INFO [stderr]  --> src/cpu/cpu.rs:5:1
Dec 19 15:21:17.752 INFO [stderr]   |
Dec 19 15:21:17.752 INFO [stderr] 5 | const INTERPRETER_START: u32 = 0x000;
Dec 19 15:21:17.752 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 15:21:17.752 INFO [stderr]   |
Dec 19 15:21:17.752 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 15:21:17.752 INFO [stderr] 
Dec 19 15:21:17.752 INFO [stderr] warning: constant item is never used: `INTERPRETER_END`
Dec 19 15:21:17.752 INFO [stderr]  --> src/cpu/cpu.rs:6:1
Dec 19 15:21:17.752 INFO [stderr]   |
Dec 19 15:21:17.752 INFO [stderr] 6 | const INTERPRETER_END: u32 = 0x1FF;
Dec 19 15:21:17.752 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 15:21:17.752 INFO [stderr] 
Dec 19 15:21:17.752 INFO [stderr] warning: constant item is never used: `INTERPRETER_LENGTH`
Dec 19 15:21:17.752 INFO [stderr]  --> src/cpu/cpu.rs:7:1
Dec 19 15:21:17.752 INFO [stderr]   |
Dec 19 15:21:17.752 INFO [stderr] 7 | const INTERPRETER_LENGTH: u32 = INTERPRETER_END - INTERPRETER_START;
Dec 19 15:21:17.752 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 15:21:17.752 INFO [stderr] 
Dec 19 15:21:17.752 INFO [stderr] warning: constant item is never used: `DATA_END`
Dec 19 15:21:17.752 INFO [stderr]   --> src/cpu/cpu.rs:14:1
Dec 19 15:21:17.752 INFO [stderr]    |
Dec 19 15:21:17.752 INFO [stderr] 14 | const DATA_END: usize = 0xFFF;
Dec 19 15:21:17.752 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 15:21:17.752 INFO [stderr] 
Dec 19 15:21:17.752 INFO [stderr] warning: constant item is never used: `DATA_LENGTH`
Dec 19 15:21:17.752 INFO [stderr]   --> src/cpu/cpu.rs:15:1
Dec 19 15:21:17.752 INFO [stderr]    |
Dec 19 15:21:17.752 INFO [stderr] 15 | const DATA_LENGTH: usize = DATA_END - DATA_START;
Dec 19 15:21:17.752 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 15:21:17.752 INFO [stderr] 
Dec 19 15:21:17.756 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 15:21:17.756 INFO [stderr]    --> src/cpu/cpu.rs:102:9
Dec 19 15:21:17.756 INFO [stderr]     |
Dec 19 15:21:17.756 INFO [stderr] 102 |         stdin().read(&mut c);
Dec 19 15:21:17.756 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
Dec 19 15:21:17.756 INFO [stderr]     |
Dec 19 15:21:17.756 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 15:21:17.756 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 15:21:17.756 INFO [stderr] 
Dec 19 15:21:17.836 INFO [stderr] warning: constant item is never used: `INTERPRETER_START`
Dec 19 15:21:17.836 INFO [stderr]  --> src/cpu/cpu.rs:5:1
Dec 19 15:21:17.836 INFO [stderr]   |
Dec 19 15:21:17.836 INFO [stderr] 5 | const INTERPRETER_START: u32 = 0x000;
Dec 19 15:21:17.836 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 15:21:17.836 INFO [stderr]   |
Dec 19 15:21:17.836 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 15:21:17.836 INFO [stderr] 
Dec 19 15:21:17.836 INFO [stderr] warning: constant item is never used: `INTERPRETER_END`
Dec 19 15:21:17.836 INFO [stderr]  --> src/cpu/cpu.rs:6:1
Dec 19 15:21:17.836 INFO [stderr]   |
Dec 19 15:21:17.836 INFO [stderr] 6 | const INTERPRETER_END: u32 = 0x1FF;
Dec 19 15:21:17.836 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 15:21:17.836 INFO [stderr] 
Dec 19 15:21:17.836 INFO [stderr] warning: constant item is never used: `INTERPRETER_LENGTH`
Dec 19 15:21:17.836 INFO [stderr]  --> src/cpu/cpu.rs:7:1
Dec 19 15:21:17.837 INFO [stderr]   |
Dec 19 15:21:17.837 INFO [stderr] 7 | const INTERPRETER_LENGTH: u32 = INTERPRETER_END - INTERPRETER_START;
Dec 19 15:21:17.837 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 15:21:17.837 INFO [stderr] 
Dec 19 15:21:17.837 INFO [stderr] warning: constant item is never used: `DATA_END`
Dec 19 15:21:17.837 INFO [stderr]   --> src/cpu/cpu.rs:14:1
Dec 19 15:21:17.837 INFO [stderr]    |
Dec 19 15:21:17.837 INFO [stderr] 14 | const DATA_END: usize = 0xFFF;
Dec 19 15:21:17.837 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 15:21:17.837 INFO [stderr] 
Dec 19 15:21:17.837 INFO [stderr] warning: constant item is never used: `DATA_LENGTH`
Dec 19 15:21:17.837 INFO [stderr]   --> src/cpu/cpu.rs:15:1
Dec 19 15:21:17.837 INFO [stderr]    |
Dec 19 15:21:17.837 INFO [stderr] 15 | const DATA_LENGTH: usize = DATA_END - DATA_START;
Dec 19 15:21:17.837 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 15:21:17.837 INFO [stderr] 
Dec 19 15:21:17.837 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 15:21:17.837 INFO [stderr]    --> src/cpu/cpu.rs:102:9
Dec 19 15:21:17.837 INFO [stderr]     |
Dec 19 15:21:17.837 INFO [stderr] 102 |         stdin().read(&mut c);
Dec 19 15:21:17.837 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
Dec 19 15:21:17.837 INFO [stderr]     |
Dec 19 15:21:17.837 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 15:21:17.837 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 15:21:17.837 INFO [stderr] 
Dec 19 15:21:17.871 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.18s
Dec 19 15:21:18.708 INFO running `"docker" "inspect" "ba6a86d3987f8550281bbd1347ce0e66ef2250df488befe0711a0d79d2e9c722"`
Dec 19 15:21:19.002 INFO running `"docker" "rm" "-f" "ba6a86d3987f8550281bbd1347ce0e66ef2250df488befe0711a0d79d2e9c722"`
Dec 19 15:21:19.332 INFO [stdout] ba6a86d3987f8550281bbd1347ce0e66ef2250df488befe0711a0d79d2e9c722