[INFO] fetching crate mfcc 0.1.0...
[INFO] extracting crate mfcc 0.1.0 into work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/mfcc/0.1.0
[INFO] extracting crate mfcc 0.1.0 into work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/mfcc/0.1.0
[INFO] validating manifest of mfcc-0.1.0 on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mfcc-0.1.0 on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mfcc-0.1.0
[INFO] finished frobbing mfcc-0.1.0
[INFO] frobbed toml for mfcc-0.1.0 written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/mfcc/0.1.0/Cargo.toml
[INFO] started frobbing mfcc-0.1.0
[INFO] finished frobbing mfcc-0.1.0
[INFO] frobbed toml for mfcc-0.1.0 written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/mfcc/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fftw v0.6.0
[INFO] [stderr]   Downloaded fftw-sys v0.5.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mfcc-0.1.0 against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-1/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/mfcc/0.1.0:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6ded2dac3d45035fc90d0c47aba4c51530243e1a03a7b33ea90ff7daf3b562d5
[INFO] running `"docker" "start" "-a" "6ded2dac3d45035fc90d0c47aba4c51530243e1a03a7b33ea90ff7daf3b562d5"`
[INFO] [stderr]     Checking strength_reduce v0.2.2
[INFO] [stderr]     Checking transpose v0.1.0
[INFO] [stderr]     Checking rustfft v3.0.0
[INFO] [stderr]     Checking mfcc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `buffer_size`
[INFO] [stderr]   --> src/mfcc.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     buffer_size: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `buffer_size`
[INFO] [stderr]   --> src/mfcc.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     buffer_size: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.05s
[INFO] running `"docker" "inspect" "6ded2dac3d45035fc90d0c47aba4c51530243e1a03a7b33ea90ff7daf3b562d5"`
[INFO] running `"docker" "rm" "-f" "6ded2dac3d45035fc90d0c47aba4c51530243e1a03a7b33ea90ff7daf3b562d5"`
[INFO] [stdout] 6ded2dac3d45035fc90d0c47aba4c51530243e1a03a7b33ea90ff7daf3b562d5