Oct 12 16:22:32.853 INFO checking nrlsk/rustyMIPS against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 16:22:32.853 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-3/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-3/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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 12 16:22:33.236 INFO blam! 3febaa384948cb03beaaa695b8cb581ec0186041ddb707e44d2af57f792486e7
Oct 12 16:22:33.245 INFO running `"docker" "start" "-a" "3febaa384948cb03beaaa695b8cb581ec0186041ddb707e44d2af57f792486e7"`
Oct 12 16:22:34.976 INFO kablam! usermod: no changes
Oct 12 16:22:35.061 INFO kablam!     Checking colored v1.6.1
Oct 12 16:22:35.628 INFO kablam!     Checking rustymips v0.1.0 (/source)
Oct 12 16:22:36.205 INFO kablam! warning: struct is never constructed: `Register`
Oct 12 16:22:36.205 INFO kablam!  --> src/cpu.rs:5:1
Oct 12 16:22:36.206 INFO kablam!   |
Oct 12 16:22:36.206 INFO kablam! 5 | struct Register {
Oct 12 16:22:36.206 INFO kablam!   | ^^^^^^^^^^^^^^^
Oct 12 16:22:36.206 INFO kablam!   |
Oct 12 16:22:36.206 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 12 16:22:36.206 INFO kablam! 
Oct 12 16:22:36.206 INFO kablam! warning: method is never used: `init_32`
Oct 12 16:22:36.206 INFO kablam!   --> src/cpu.rs:14:5
Oct 12 16:22:36.206 INFO kablam!    |
Oct 12 16:22:36.206 INFO kablam! 14 |     fn init_32(num: u8, name: String, alt_name: Option<String>) -> Self {
Oct 12 16:22:36.206 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 16:22:36.206 INFO kablam! 
Oct 12 16:22:36.206 INFO kablam! warning: struct is never constructed: `Registers`
Oct 12 16:22:36.206 INFO kablam!   --> src/cpu.rs:22:1
Oct 12 16:22:36.206 INFO kablam!    |
Oct 12 16:22:36.209 INFO kablam! 22 | struct Registers {
Oct 12 16:22:36.209 INFO kablam!    | ^^^^^^^^^^^^^^^^
Oct 12 16:22:36.209 INFO kablam! 
Oct 12 16:22:36.429 INFO kablam! warning: struct is never constructed: `Register`
Oct 12 16:22:36.429 INFO kablam!  --> src/cpu.rs:5:1
Oct 12 16:22:36.429 INFO kablam!   |
Oct 12 16:22:36.430 INFO kablam! 5 | struct Register {
Oct 12 16:22:36.431 INFO kablam!   | ^^^^^^^^^^^^^^^
Oct 12 16:22:36.432 INFO kablam!   |
Oct 12 16:22:36.432 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 12 16:22:36.433 INFO kablam! 
Oct 12 16:22:36.433 INFO kablam! warning: method is never used: `init_32`
Oct 12 16:22:36.434 INFO kablam!   --> src/cpu.rs:14:5
Oct 12 16:22:36.435 INFO kablam!    |
Oct 12 16:22:36.435 INFO kablam! 14 |     fn init_32(num: u8, name: String, alt_name: Option<String>) -> Self {
Oct 12 16:22:36.436 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 16:22:36.437 INFO kablam! 
Oct 12 16:22:36.437 INFO kablam! warning: struct is never constructed: `Registers`
Oct 12 16:22:36.438 INFO kablam!   --> src/cpu.rs:22:1
Oct 12 16:22:36.439 INFO kablam!    |
Oct 12 16:22:36.439 INFO kablam! 22 | struct Registers {
Oct 12 16:22:36.440 INFO kablam!    | ^^^^^^^^^^^^^^^^
Oct 12 16:22:36.440 INFO kablam! 
Oct 12 16:22:36.919 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.92s
Oct 12 16:22:36.928 INFO kablam! su: No module specific data is present
Oct 12 16:22:37.788 INFO running `"docker" "rm" "-f" "3febaa384948cb03beaaa695b8cb581ec0186041ddb707e44d2af57f792486e7"`
Oct 12 16:22:38.052 INFO blam! 3febaa384948cb03beaaa695b8cb581ec0186041ddb707e44d2af57f792486e7