Dec 15 07:54:25.565 INFO testing indexed-line-reader-0.2.0 against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 15 07:54:25.565 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-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 15 07:54:26.112 INFO [stdout] 56214763d9b75a1704f1c59f74aaf86c891bc62b0d6a07868731ee016574a1e1
Dec 15 07:54:26.118 INFO running `"docker" "start" "-a" "56214763d9b75a1704f1c59f74aaf86c891bc62b0d6a07868731ee016574a1e1"`
Dec 15 07:54:26.854 INFO [stderr] usermod: no changes
Dec 15 07:54:26.903 INFO [stderr]    Compiling indexed-line-reader v0.2.0 (/source)
Dec 15 07:54:27.451 INFO [stderr] warning: variable does not need to be mutable
Dec 15 07:54:27.451 INFO [stderr]   --> src/lib.rs:89:50
Dec 15 07:54:27.451 INFO [stderr]    |
Dec 15 07:54:27.451 INFO [stderr] 89 |     pub fn compute<T: BufRead + Seek>(&mut self, mut reader: &mut T) -> Result<u64, Error> {
Dec 15 07:54:27.451 INFO [stderr]    |                                                  ----^^^^^^
Dec 15 07:54:27.451 INFO [stderr]    |                                                  |
Dec 15 07:54:27.451 INFO [stderr]    |                                                  help: remove this `mut`
Dec 15 07:54:27.451 INFO [stderr]    |
Dec 15 07:54:27.451 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 15 07:54:27.451 INFO [stderr] 
Dec 15 07:54:27.844 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
Dec 15 07:54:27.846 INFO [stderr] su: No module specific data is present
Dec 15 07:54:28.276 INFO running `"docker" "inspect" "56214763d9b75a1704f1c59f74aaf86c891bc62b0d6a07868731ee016574a1e1"`
Dec 15 07:54:28.351 INFO running `"docker" "rm" "-f" "56214763d9b75a1704f1c59f74aaf86c891bc62b0d6a07868731ee016574a1e1"`
Dec 15 07:54:28.457 INFO [stdout] 56214763d9b75a1704f1c59f74aaf86c891bc62b0d6a07868731ee016574a1e1
Dec 15 07:54:28.461 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen --no-run" "-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 15 07:54:28.677 INFO [stdout] b14d7387890fa9e948c3676913c753a62fd9a850d02fc3f74072ded4f9c5fd3f
Dec 15 07:54:28.680 INFO running `"docker" "start" "-a" "b14d7387890fa9e948c3676913c753a62fd9a850d02fc3f74072ded4f9c5fd3f"`
Dec 15 07:54:29.775 INFO [stderr] usermod: no changes
Dec 15 07:54:29.822 INFO [stderr]    Compiling indexed-line-reader v0.2.0 (/source)
Dec 15 07:54:30.562 INFO [stderr] warning: variable does not need to be mutable
Dec 15 07:54:30.562 INFO [stderr]   --> src/lib.rs:89:50
Dec 15 07:54:30.562 INFO [stderr]    |
Dec 15 07:54:30.562 INFO [stderr] 89 |     pub fn compute<T: BufRead + Seek>(&mut self, mut reader: &mut T) -> Result<u64, Error> {
Dec 15 07:54:30.562 INFO [stderr]    |                                                  ----^^^^^^
Dec 15 07:54:30.562 INFO [stderr]    |                                                  |
Dec 15 07:54:30.562 INFO [stderr]    |                                                  help: remove this `mut`
Dec 15 07:54:30.562 INFO [stderr]    |
Dec 15 07:54:30.562 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 15 07:54:30.562 INFO [stderr] 
Dec 15 07:54:30.580 INFO [stderr] warning: variable does not need to be mutable
Dec 15 07:54:30.580 INFO [stderr]    --> src/lib.rs:296:13
Dec 15 07:54:30.580 INFO [stderr]     |
Dec 15 07:54:30.580 INFO [stderr] 296 |         let mut line_reader = &mut IndexedLineReader::new(BufReader::new(file_reader), 100);
Dec 15 07:54:30.580 INFO [stderr]     |             ----^^^^^^^^^^^
Dec 15 07:54:30.580 INFO [stderr]     |             |
Dec 15 07:54:30.580 INFO [stderr]     |             help: remove this `mut`
Dec 15 07:54:30.580 INFO [stderr] 
Dec 15 07:54:31.709 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.86s
Dec 15 07:54:31.709 INFO [stderr] su: No module specific data is present
Dec 15 07:54:32.334 INFO running `"docker" "inspect" "b14d7387890fa9e948c3676913c753a62fd9a850d02fc3f74072ded4f9c5fd3f"`
Dec 15 07:54:32.509 INFO running `"docker" "rm" "-f" "b14d7387890fa9e948c3676913c753a62fd9a850d02fc3f74072ded4f9c5fd3f"`
Dec 15 07:54:32.687 INFO [stdout] b14d7387890fa9e948c3676913c753a62fd9a850d02fc3f74072ded4f9c5fd3f