[INFO] crate indexed-line-reader 0.2.0 is already in cache
[INFO] extracting crate indexed-line-reader 0.2.0 into work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/reg/indexed-line-reader/0.2.0
[INFO] extracting crate indexed-line-reader 0.2.0 into work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/reg/indexed-line-reader/0.2.0
[INFO] validating manifest of indexed-line-reader-0.2.0 on toolchain master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of indexed-line-reader-0.2.0 on toolchain try#bad365140e1e8233b42b21af70a407f14ce5fec5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing indexed-line-reader-0.2.0
[INFO] finished frobbing indexed-line-reader-0.2.0
[INFO] frobbed toml for indexed-line-reader-0.2.0 written to work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/reg/indexed-line-reader/0.2.0/Cargo.toml
[INFO] started frobbing indexed-line-reader-0.2.0
[INFO] finished frobbing indexed-line-reader-0.2.0
[INFO] frobbed toml for indexed-line-reader-0.2.0 written to work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/reg/indexed-line-reader/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking indexed-line-reader-0.2.0 against master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980 for pr-56896
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56896/worker-7/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/reg/indexed-line-reader/0.2.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] df82f0fe5dc1063d578d02743ee083b8539044618f259c5222942a0ff5894010
[INFO] running `"docker" "start" "-a" "df82f0fe5dc1063d578d02743ee083b8539044618f259c5222942a0ff5894010"`
[INFO] [stderr]     Checking indexed-line-reader v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:89:50
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn compute<T: BufRead + Seek>(&mut self, mut reader: &mut T) -> Result<u64, Error> {
[INFO] [stderr]    |                                                  ----^^^^^^
[INFO] [stderr]    |                                                  |
[INFO] [stderr]    |                                                  help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:89:50
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn compute<T: BufRead + Seek>(&mut self, mut reader: &mut T) -> Result<u64, Error> {
[INFO] [stderr]    |                                                  ----^^^^^^
[INFO] [stderr]    |                                                  |
[INFO] [stderr]    |                                                  help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:296:13
[INFO] [stderr]     |
[INFO] [stderr] 296 |         let mut line_reader = &mut IndexedLineReader::new(BufReader::new(file_reader), 100);
[INFO] [stderr]     |             ----^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `"docker" "inspect" "df82f0fe5dc1063d578d02743ee083b8539044618f259c5222942a0ff5894010"`
[INFO] running `"docker" "rm" "-f" "df82f0fe5dc1063d578d02743ee083b8539044618f259c5222942a0ff5894010"`
[INFO] [stdout] df82f0fe5dc1063d578d02743ee083b8539044618f259c5222942a0ff5894010