Dec 12 00:28:07.393 INFO checking SDRust/png-fabuloso against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 00:28:07.393 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 00:28:07.868 INFO [stdout] 84a1d847a038fcdae9572df8b061178f4678c6cebec6bb435c504e3f81d07cf9
Dec 12 00:28:07.872 INFO running `"docker" "start" "-a" "84a1d847a038fcdae9572df8b061178f4678c6cebec6bb435c504e3f81d07cf9"`
Dec 12 00:28:09.496 INFO [stderr] usermod: no changes
Dec 12 00:28:09.602 INFO [stderr]    Compiling miniz-sys v0.1.7
Dec 12 00:28:09.602 INFO [stderr]     Checking crc v1.3.0
Dec 12 00:28:11.886 INFO [stderr]     Checking flate2 v0.2.14
Dec 12 00:28:12.736 INFO [stderr]     Checking pngstogram v0.1.0 (/source)
Dec 12 00:28:13.648 INFO [stderr] warning: variable does not need to be mutable
Dec 12 00:28:13.648 INFO [stderr]   --> src/main.rs:86:13
Dec 12 00:28:13.648 INFO [stderr]    |
Dec 12 00:28:13.648 INFO [stderr] 86 |         let mut data_borrow : &mut [u8] = big_data_buf.borrow_mut();
Dec 12 00:28:13.648 INFO [stderr]    |             ----^^^^^^^^^^^
Dec 12 00:28:13.648 INFO [stderr]    |             |
Dec 12 00:28:13.648 INFO [stderr]    |             help: remove this `mut`
Dec 12 00:28:13.648 INFO [stderr]    |
Dec 12 00:28:13.648 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 00:28:13.648 INFO [stderr] 
Dec 12 00:28:13.844 INFO [stderr] warning: variable does not need to be mutable
Dec 12 00:28:13.844 INFO [stderr]   --> src/main.rs:86:13
Dec 12 00:28:13.844 INFO [stderr]    |
Dec 12 00:28:13.844 INFO [stderr] 86 |         let mut data_borrow : &mut [u8] = big_data_buf.borrow_mut();
Dec 12 00:28:13.844 INFO [stderr]    |             ----^^^^^^^^^^^
Dec 12 00:28:13.844 INFO [stderr]    |             |
Dec 12 00:28:13.844 INFO [stderr]    |             help: remove this `mut`
Dec 12 00:28:13.844 INFO [stderr]    |
Dec 12 00:28:13.844 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 00:28:13.844 INFO [stderr] 
Dec 12 00:28:13.880 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.34s
Dec 12 00:28:13.880 INFO [stderr] su: No module specific data is present
Dec 12 00:28:14.550 INFO running `"docker" "inspect" "84a1d847a038fcdae9572df8b061178f4678c6cebec6bb435c504e3f81d07cf9"`
Dec 12 00:28:14.839 INFO running `"docker" "rm" "-f" "84a1d847a038fcdae9572df8b061178f4678c6cebec6bb435c504e3f81d07cf9"`
Dec 12 00:28:15.125 INFO [stdout] 84a1d847a038fcdae9572df8b061178f4678c6cebec6bb435c504e3f81d07cf9