Dec 11 21:54:31.929 INFO checking benjaminhadfield/mmu against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 21:54:31.929 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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"`
Dec 11 21:54:32.431 INFO [stdout] f4d614f9ff7d1dc36a09062badf6c15b5a678429fb9e5e30511fbefda62f1dc9
Dec 11 21:54:32.433 INFO running `"docker" "start" "-a" "f4d614f9ff7d1dc36a09062badf6c15b5a678429fb9e5e30511fbefda62f1dc9"`
Dec 11 21:54:33.744 INFO [stderr] usermod: no changes
Dec 11 21:54:33.805 INFO [stderr]     Checking mmu v0.1.0 (/source)
Dec 11 21:54:34.388 INFO [stderr] warning: field is never used: `e`
Dec 11 21:54:34.388 INFO [stderr]   --> src/hardware.rs:39:5
Dec 11 21:54:34.388 INFO [stderr]    |
Dec 11 21:54:34.388 INFO [stderr] 39 |     e: u8,
Dec 11 21:54:34.388 INFO [stderr]    |     ^^^^^
Dec 11 21:54:34.388 INFO [stderr]    |
Dec 11 21:54:34.388 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 21:54:34.388 INFO [stderr] 
Dec 11 21:54:34.388 INFO [stderr] warning: field is never used: `s`
Dec 11 21:54:34.388 INFO [stderr]   --> src/hardware.rs:41:5
Dec 11 21:54:34.388 INFO [stderr]    |
Dec 11 21:54:34.388 INFO [stderr] 41 |     s: u8,
Dec 11 21:54:34.388 INFO [stderr]    |     ^^^^^
Dec 11 21:54:34.388 INFO [stderr] 
Dec 11 21:54:34.556 INFO [stderr] warning: field is never used: `e`
Dec 11 21:54:34.556 INFO [stderr]   --> src/hardware.rs:39:5
Dec 11 21:54:34.556 INFO [stderr]    |
Dec 11 21:54:34.556 INFO [stderr] 39 |     e: u8,
Dec 11 21:54:34.556 INFO [stderr]    |     ^^^^^
Dec 11 21:54:34.556 INFO [stderr]    |
Dec 11 21:54:34.556 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 21:54:34.556 INFO [stderr] 
Dec 11 21:54:34.561 INFO [stderr] warning: field is never used: `s`
Dec 11 21:54:34.561 INFO [stderr]   --> src/hardware.rs:41:5
Dec 11 21:54:34.561 INFO [stderr]    |
Dec 11 21:54:34.561 INFO [stderr] 41 |     s: u8,
Dec 11 21:54:34.561 INFO [stderr]    |     ^^^^^
Dec 11 21:54:34.561 INFO [stderr] 
Dec 11 21:54:34.953 INFO [stderr] warning: unused variable: `tlb`
Dec 11 21:54:34.953 INFO [stderr]  --> src/main.rs:9:9
Dec 11 21:54:34.953 INFO [stderr]   |
Dec 11 21:54:34.953 INFO [stderr] 9 |     let tlb = hardware::TLB::new(4, 4);
Dec 11 21:54:34.953 INFO [stderr]   |         ^^^ help: consider using `_tlb` instead
Dec 11 21:54:34.953 INFO [stderr]   |
Dec 11 21:54:34.953 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 11 21:54:34.953 INFO [stderr] 
Dec 11 21:54:35.037 INFO [stderr] warning: unused variable: `tlb`
Dec 11 21:54:35.037 INFO [stderr]  --> src/main.rs:9:9
Dec 11 21:54:35.037 INFO [stderr]   |
Dec 11 21:54:35.037 INFO [stderr] 9 |     let tlb = hardware::TLB::new(4, 4);
Dec 11 21:54:35.037 INFO [stderr]   |         ^^^ help: consider using `_tlb` instead
Dec 11 21:54:35.037 INFO [stderr]   |
Dec 11 21:54:35.037 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 11 21:54:35.037 INFO [stderr] 
Dec 11 21:54:35.060 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
Dec 11 21:54:35.062 INFO [stderr] su: No module specific data is present
Dec 11 21:54:35.568 INFO running `"docker" "inspect" "f4d614f9ff7d1dc36a09062badf6c15b5a678429fb9e5e30511fbefda62f1dc9"`
Dec 11 21:54:35.717 INFO running `"docker" "rm" "-f" "f4d614f9ff7d1dc36a09062badf6c15b5a678429fb9e5e30511fbefda62f1dc9"`
Dec 11 21:54:35.832 INFO [stdout] f4d614f9ff7d1dc36a09062badf6c15b5a678429fb9e5e30511fbefda62f1dc9