Nov 30 20:53:13.317 INFO checking indexed-line-reader-0.2.0 against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 20:53:13.317 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-6/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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"`
Nov 30 20:53:13.527 INFO [stdout] 31e535fc61e4c7da9a7402179452eb417b2673a36630df77e44b5043f5e39366
Nov 30 20:53:13.529 INFO running `"docker" "start" "-a" "31e535fc61e4c7da9a7402179452eb417b2673a36630df77e44b5043f5e39366"`
Nov 30 20:53:14.084 INFO [stderr] usermod: no changes
Nov 30 20:53:14.144 INFO [stderr]     Checking indexed-line-reader v0.2.0 (/source)
Nov 30 20:53:15.072 INFO [stderr] warning: variable does not need to be mutable
Nov 30 20:53:15.072 INFO [stderr]   --> src/lib.rs:89:50
Nov 30 20:53:15.072 INFO [stderr]    |
Nov 30 20:53:15.072 INFO [stderr] 89 |     pub fn compute<T: BufRead + Seek>(&mut self, mut reader: &mut T) -> Result<u64, Error> {
Nov 30 20:53:15.072 INFO [stderr]    |                                                  ----^^^^^^
Nov 30 20:53:15.072 INFO [stderr]    |                                                  |
Nov 30 20:53:15.072 INFO [stderr]    |                                                  help: remove this `mut`
Nov 30 20:53:15.072 INFO [stderr]    |
Nov 30 20:53:15.072 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 20:53:15.072 INFO [stderr] 
Nov 30 20:53:15.095 INFO [stderr] warning: variable does not need to be mutable
Nov 30 20:53:15.095 INFO [stderr]   --> src/lib.rs:89:50
Nov 30 20:53:15.095 INFO [stderr]    |
Nov 30 20:53:15.095 INFO [stderr] 89 |     pub fn compute<T: BufRead + Seek>(&mut self, mut reader: &mut T) -> Result<u64, Error> {
Nov 30 20:53:15.095 INFO [stderr]    |                                                  ----^^^^^^
Nov 30 20:53:15.095 INFO [stderr]    |                                                  |
Nov 30 20:53:15.095 INFO [stderr]    |                                                  help: remove this `mut`
Nov 30 20:53:15.095 INFO [stderr]    |
Nov 30 20:53:15.095 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 20:53:15.095 INFO [stderr] 
Nov 30 20:53:15.110 INFO [stderr] warning: variable does not need to be mutable
Nov 30 20:53:15.110 INFO [stderr]    --> src/lib.rs:296:13
Nov 30 20:53:15.110 INFO [stderr]     |
Nov 30 20:53:15.110 INFO [stderr] 296 |         let mut line_reader = &mut IndexedLineReader::new(BufReader::new(file_reader), 100);
Nov 30 20:53:15.110 INFO [stderr]     |             ----^^^^^^^^^^^
Nov 30 20:53:15.110 INFO [stderr]     |             |
Nov 30 20:53:15.110 INFO [stderr]     |             help: remove this `mut`
Nov 30 20:53:15.110 INFO [stderr] 
Nov 30 20:53:15.127 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
Nov 30 20:53:15.133 INFO [stderr] su: No module specific data is present
Nov 30 20:53:15.434 INFO running `"docker" "inspect" "31e535fc61e4c7da9a7402179452eb417b2673a36630df77e44b5043f5e39366"`
Nov 30 20:53:15.525 INFO running `"docker" "rm" "-f" "31e535fc61e4c7da9a7402179452eb417b2673a36630df77e44b5043f5e39366"`
Nov 30 20:53:15.625 INFO [stdout] 31e535fc61e4c7da9a7402179452eb417b2673a36630df77e44b5043f5e39366