[INFO] updating cached repository TeslasGhost/Read-Write-WAV
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/TeslasGhost/Read-Write-WAV
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/TeslasGhost/Read-Write-WAV" "work/ex/beta-1.38-1/sources/1.37.0/gh/TeslasGhost/Read-Write-WAV"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/TeslasGhost/Read-Write-WAV'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/TeslasGhost/Read-Write-WAV" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TeslasGhost/Read-Write-WAV"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TeslasGhost/Read-Write-WAV'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ffa75e25db5891496bc961b7331fa0c7fcb297ed
[INFO] sha for GitHub repo TeslasGhost/Read-Write-WAV: ffa75e25db5891496bc961b7331fa0c7fcb297ed
[INFO] validating manifest of TeslasGhost/Read-Write-WAV on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of TeslasGhost/Read-Write-WAV on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing TeslasGhost/Read-Write-WAV
[INFO] finished frobbing TeslasGhost/Read-Write-WAV
[INFO] frobbed toml for TeslasGhost/Read-Write-WAV written to work/ex/beta-1.38-1/sources/1.37.0/gh/TeslasGhost/Read-Write-WAV/Cargo.toml
[INFO] started frobbing TeslasGhost/Read-Write-WAV
[INFO] finished frobbing TeslasGhost/Read-Write-WAV
[INFO] frobbed toml for TeslasGhost/Read-Write-WAV written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TeslasGhost/Read-Write-WAV/Cargo.toml
[INFO] crate TeslasGhost/Read-Write-WAV already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing TeslasGhost/Read-Write-WAV against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/TeslasGhost/Read-Write-WAV:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 1278bbe23d411fa1a7574fedac49a40726f2d5255747262d1de1396947aa9672
[INFO] running `"docker" "start" "-a" "1278bbe23d411fa1a7574fedac49a40726f2d5255747262d1de1396947aa9672"`
[INFO] [stderr]    Compiling hound v3.0.0
[INFO] [stderr]    Compiling sample v0.6.2
[INFO] [stderr]    Compiling readwritewav v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `ToFrameSliceMut`
[INFO] [stderr]  --> src/main.rs:4:30
[INFO] [stderr]   |
[INFO] [stderr] 4 | use sample::{signal, Signal, ToFrameSliceMut};
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/main.rs:150:27
[INFO] [stderr]     |
[INFO] [stderr] 150 |     let start_frequency = ((begin as i32) * (sample_rate));
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/main.rs:158:25
[INFO] [stderr]     |
[INFO] [stderr] 158 |     let end_frequency = ((end as i32) * (sample_rate));
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the type `[[i16; 2]]` cannot be indexed by `std::ops::Range<i32>`
[INFO] [stderr]    --> src/main.rs:126:22
[INFO] [stderr]     |
[INFO] [stderr] 126 |     let the_slice = &frames[start_frame..end_frame];
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ slice indices are of type `usize` or ranges of `usize`
[INFO] [stderr]     |
[INFO] [stderr]     = help: the trait `std::slice::SliceIndex<[[i16; 2]]>` is not implemented for `std::ops::Range<i32>`
[INFO] [stderr]     = note: required because of the requirements on the impl of `std::ops::Index<std::ops::Range<i32>>` for `std::vec::Vec<[i16; 2]>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: Could not compile `readwritewav`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "1278bbe23d411fa1a7574fedac49a40726f2d5255747262d1de1396947aa9672"`
[INFO] running `"docker" "rm" "-f" "1278bbe23d411fa1a7574fedac49a40726f2d5255747262d1de1396947aa9672"`
[INFO] [stdout] 1278bbe23d411fa1a7574fedac49a40726f2d5255747262d1de1396947aa9672