Dec 12 12:52:46.512 INFO checking indexed-line-reader-0.2.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 12:52:46.512 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 12:52:46.756 INFO [stdout] cd098c90acaadddca87d375a5c99124df90fd423e23fba47368681bed700a756
Dec 12 12:52:46.764 INFO running `"docker" "start" "-a" "cd098c90acaadddca87d375a5c99124df90fd423e23fba47368681bed700a756"`
Dec 12 12:52:47.524 INFO [stderr] usermod: no changes
Dec 12 12:52:47.556 INFO [stderr]     Checking indexed-line-reader v0.2.0 (/source)
Dec 12 12:52:48.125 INFO [stderr] warning: variable does not need to be mutable
Dec 12 12:52:48.126 INFO [stderr]   --> src/lib.rs:89:50
Dec 12 12:52:48.126 INFO [stderr]    |
Dec 12 12:52:48.126 INFO [stderr] 89 |     pub fn compute<T: BufRead + Seek>(&mut self, mut reader: &mut T) -> Result<u64, Error> {
Dec 12 12:52:48.127 INFO [stderr]    |                                                  ----^^^^^^
Dec 12 12:52:48.127 INFO [stderr]    |                                                  |
Dec 12 12:52:48.127 INFO [stderr]    |                                                  help: remove this `mut`
Dec 12 12:52:48.129 INFO [stderr]    |
Dec 12 12:52:48.129 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 12:52:48.129 INFO [stderr] 
Dec 12 12:52:48.233 INFO [stderr] warning: variable does not need to be mutable
Dec 12 12:52:48.233 INFO [stderr]   --> src/lib.rs:89:50
Dec 12 12:52:48.233 INFO [stderr]    |
Dec 12 12:52:48.233 INFO [stderr] 89 |     pub fn compute<T: BufRead + Seek>(&mut self, mut reader: &mut T) -> Result<u64, Error> {
Dec 12 12:52:48.233 INFO [stderr]    |                                                  ----^^^^^^
Dec 12 12:52:48.233 INFO [stderr]    |                                                  |
Dec 12 12:52:48.233 INFO [stderr]    |                                                  help: remove this `mut`
Dec 12 12:52:48.233 INFO [stderr]    |
Dec 12 12:52:48.233 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 12:52:48.233 INFO [stderr] 
Dec 12 12:52:48.249 INFO [stderr] warning: variable does not need to be mutable
Dec 12 12:52:48.249 INFO [stderr]    --> src/lib.rs:296:13
Dec 12 12:52:48.249 INFO [stderr]     |
Dec 12 12:52:48.249 INFO [stderr] 296 |         let mut line_reader = &mut IndexedLineReader::new(BufReader::new(file_reader), 100);
Dec 12 12:52:48.249 INFO [stderr]     |             ----^^^^^^^^^^^
Dec 12 12:52:48.249 INFO [stderr]     |             |
Dec 12 12:52:48.249 INFO [stderr]     |             help: remove this `mut`
Dec 12 12:52:48.249 INFO [stderr] 
Dec 12 12:52:48.300 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
Dec 12 12:52:48.302 INFO [stderr] su: No module specific data is present
Dec 12 12:52:48.757 INFO running `"docker" "inspect" "cd098c90acaadddca87d375a5c99124df90fd423e23fba47368681bed700a756"`
Dec 12 12:52:49.058 INFO running `"docker" "rm" "-f" "cd098c90acaadddca87d375a5c99124df90fd423e23fba47368681bed700a756"`
Dec 12 12:52:49.332 INFO [stdout] cd098c90acaadddca87d375a5c99124df90fd423e23fba47368681bed700a756