[INFO] crate ofuton 0.1.0 is already in cache
[INFO] extracting crate ofuton 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/ofuton/0.1.0
[INFO] extracting crate ofuton 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ofuton/0.1.0
[INFO] validating manifest of ofuton-0.1.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ofuton-0.1.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ofuton-0.1.0
[INFO] finished frobbing ofuton-0.1.0
[INFO] frobbed toml for ofuton-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/ofuton/0.1.0/Cargo.toml
[INFO] started frobbing ofuton-0.1.0
[INFO] finished frobbing ofuton-0.1.0
[INFO] frobbed toml for ofuton-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ofuton/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ofuton-0.1.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ofuton/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=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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] c7c3633e23e6261dc0b0ee32429d328c6e9501b9f47f2b1ba6c6e37b02c785e1
[INFO] running `"docker" "start" "-a" "c7c3633e23e6261dc0b0ee32429d328c6e9501b9f47f2b1ba6c6e37b02c785e1"`
[INFO] [stderr]    Compiling ndarray v0.10.14
[INFO] [stderr]    Compiling rustfft v2.1.0
[INFO] [stderr]    Compiling ofuton v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:81:17
[INFO] [stderr]    |
[INFO] [stderr] 81 |             for mut row in input.genrows_mut() {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 13.66s
[INFO] running `"docker" "inspect" "c7c3633e23e6261dc0b0ee32429d328c6e9501b9f47f2b1ba6c6e37b02c785e1"`
[INFO] running `"docker" "rm" "-f" "c7c3633e23e6261dc0b0ee32429d328c6e9501b9f47f2b1ba6c6e37b02c785e1"`
[INFO] [stdout] c7c3633e23e6261dc0b0ee32429d328c6e9501b9f47f2b1ba6c6e37b02c785e1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ofuton/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=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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2b31755ad0d2c0c03e0318341cea1ae7c320c179768be5395114c257c18804bc
[INFO] running `"docker" "start" "-a" "2b31755ad0d2c0c03e0318341cea1ae7c320c179768be5395114c257c18804bc"`
[INFO] [stderr]    Compiling ofuton v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:81:17
[INFO] [stderr]    |
[INFO] [stderr] 81 |             for mut row in input.genrows_mut() {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 3.18s
[INFO] running `"docker" "inspect" "2b31755ad0d2c0c03e0318341cea1ae7c320c179768be5395114c257c18804bc"`
[INFO] running `"docker" "rm" "-f" "2b31755ad0d2c0c03e0318341cea1ae7c320c179768be5395114c257c18804bc"`
[INFO] [stdout] 2b31755ad0d2c0c03e0318341cea1ae7c320c179768be5395114c257c18804bc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ofuton/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=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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 38e291b33a3356e2bb543cd4acf6a6b43d0d8649513b7ee6b154fe20b21f56a0
[INFO] running `"docker" "start" "-a" "38e291b33a3356e2bb543cd4acf6a6b43d0d8649513b7ee6b154fe20b21f56a0"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ofuton-075f77129a4865b1
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_fft ... ok
[INFO] [stdout] test tests::test_fft2 ... ok
[INFO] [stdout] test tests::test_inverse_fft ... ok
[INFO] [stdout] test tests::test_inverse_fft2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ofuton
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "38e291b33a3356e2bb543cd4acf6a6b43d0d8649513b7ee6b154fe20b21f56a0"`
[INFO] running `"docker" "rm" "-f" "38e291b33a3356e2bb543cd4acf6a6b43d0d8649513b7ee6b154fe20b21f56a0"`
[INFO] [stdout] 38e291b33a3356e2bb543cd4acf6a6b43d0d8649513b7ee6b154fe20b21f56a0