Dec 12 15:04:56.937 INFO checking file_diff-1.0.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 15:04:56.937 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 12 15:04:57.156 INFO [stdout] 3b598d46cdbabbd369baaba927522d558cbc68a58f1709284131c32b886b31ad
Dec 12 15:04:57.158 INFO running `"docker" "start" "-a" "3b598d46cdbabbd369baaba927522d558cbc68a58f1709284131c32b886b31ad"`
Dec 12 15:04:58.124 INFO [stderr] usermod: no changes
Dec 12 15:04:58.132 INFO [stderr]     Checking file_diff v1.0.0 (/source)
Dec 12 15:04:58.725 INFO [stderr] warning: variable does not need to be mutable
Dec 12 15:04:58.725 INFO [stderr]   --> src/lib.rs:49:9
Dec 12 15:04:58.725 INFO [stderr]    |
Dec 12 15:04:58.725 INFO [stderr] 49 |     let mut buff1 : &mut [u8] = &mut [0; 1024];
Dec 12 15:04:58.725 INFO [stderr]    |         ----^^^^^
Dec 12 15:04:58.725 INFO [stderr]    |         |
Dec 12 15:04:58.725 INFO [stderr]    |         help: remove this `mut`
Dec 12 15:04:58.725 INFO [stderr]    |
Dec 12 15:04:58.725 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 15:04:58.725 INFO [stderr] 
Dec 12 15:04:58.725 INFO [stderr] warning: variable does not need to be mutable
Dec 12 15:04:58.725 INFO [stderr]   --> src/lib.rs:50:9
Dec 12 15:04:58.725 INFO [stderr]    |
Dec 12 15:04:58.725 INFO [stderr] 50 |     let mut buff2 : &mut [u8] = &mut [0; 1024];
Dec 12 15:04:58.725 INFO [stderr]    |         ----^^^^^
Dec 12 15:04:58.725 INFO [stderr]    |         |
Dec 12 15:04:58.725 INFO [stderr]    |         help: remove this `mut`
Dec 12 15:04:58.725 INFO [stderr] 
Dec 12 15:04:58.861 INFO [stderr] warning: variable does not need to be mutable
Dec 12 15:04:58.861 INFO [stderr]   --> src/lib.rs:49:9
Dec 12 15:04:58.861 INFO [stderr]    |
Dec 12 15:04:58.861 INFO [stderr] 49 |     let mut buff1 : &mut [u8] = &mut [0; 1024];
Dec 12 15:04:58.861 INFO [stderr]    |         ----^^^^^
Dec 12 15:04:58.861 INFO [stderr]    |         |
Dec 12 15:04:58.861 INFO [stderr]    |         help: remove this `mut`
Dec 12 15:04:58.861 INFO [stderr]    |
Dec 12 15:04:58.861 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 15:04:58.861 INFO [stderr] 
Dec 12 15:04:58.861 INFO [stderr] warning: variable does not need to be mutable
Dec 12 15:04:58.861 INFO [stderr]   --> src/lib.rs:50:9
Dec 12 15:04:58.861 INFO [stderr]    |
Dec 12 15:04:58.861 INFO [stderr] 50 |     let mut buff2 : &mut [u8] = &mut [0; 1024];
Dec 12 15:04:58.861 INFO [stderr]    |         ----^^^^^
Dec 12 15:04:58.862 INFO [stderr]    |         |
Dec 12 15:04:58.862 INFO [stderr]    |         help: remove this `mut`
Dec 12 15:04:58.862 INFO [stderr] 
Dec 12 15:04:58.882 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
Dec 12 15:04:58.885 INFO [stderr] su: No module specific data is present
Dec 12 15:04:59.184 INFO running `"docker" "inspect" "3b598d46cdbabbd369baaba927522d558cbc68a58f1709284131c32b886b31ad"`
Dec 12 15:04:59.262 INFO running `"docker" "rm" "-f" "3b598d46cdbabbd369baaba927522d558cbc68a58f1709284131c32b886b31ad"`
Dec 12 15:04:59.364 INFO [stdout] 3b598d46cdbabbd369baaba927522d558cbc68a58f1709284131c32b886b31ad