[INFO] updating cached repository nsmryan/MachineLearningArtProject
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nsmryan/MachineLearningArtProject
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nsmryan/MachineLearningArtProject" "work/ex/beta-1.38-1/sources/1.37.0/gh/nsmryan/MachineLearningArtProject"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/nsmryan/MachineLearningArtProject'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nsmryan/MachineLearningArtProject" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nsmryan/MachineLearningArtProject"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nsmryan/MachineLearningArtProject'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5f9a523f363582176aa36c9429a7fe1ef8ca439e
[INFO] sha for GitHub repo nsmryan/MachineLearningArtProject: 5f9a523f363582176aa36c9429a7fe1ef8ca439e
[INFO] validating manifest of nsmryan/MachineLearningArtProject 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 nsmryan/MachineLearningArtProject 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 nsmryan/MachineLearningArtProject
[INFO] finished frobbing nsmryan/MachineLearningArtProject
[INFO] frobbed toml for nsmryan/MachineLearningArtProject written to work/ex/beta-1.38-1/sources/1.37.0/gh/nsmryan/MachineLearningArtProject/Cargo.toml
[INFO] started frobbing nsmryan/MachineLearningArtProject
[INFO] finished frobbing nsmryan/MachineLearningArtProject
[INFO] frobbed toml for nsmryan/MachineLearningArtProject written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nsmryan/MachineLearningArtProject/Cargo.toml
[INFO] crate nsmryan/MachineLearningArtProject 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 nsmryan/MachineLearningArtProject against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nsmryan/MachineLearningArtProject:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 958157a4d9dcd655a7e1f02f81ea2438ffb710eaae52126a53e1820a4fc06f97
[INFO] running `"docker" "start" "-a" "958157a4d9dcd655a7e1f02f81ea2438ffb710eaae52126a53e1820a4fc06f97"`
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling fann-sys v0.1.7
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling rusttype v0.7.6
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling conv v0.3.3
[INFO] [stderr]    Compiling fann v0.1.7
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling tiff v0.2.2
[INFO] [stderr]    Compiling image v0.21.1
[INFO] [stderr]    Compiling imageproc v0.18.0
[INFO] [stderr]    Compiling nn v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]   --> src/main.rs:75:34
[INFO] [stderr]    |
[INFO] [stderr] 75 |                 .filter(|(index, val)| index % 3 == 0)
[INFO] [stderr]    |                                  ^^^ help: consider prefixing with an underscore: `_val`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]   --> src/main.rs:76:24
[INFO] [stderr]    |
[INFO] [stderr] 76 |                 .map(|(index, val)| (*val as f32) / 256.0)
[INFO] [stderr]    |                        ^^^^^ help: consider prefixing with an underscore: `_index`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     fann.save("network.txt");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.nn.z6wtmm12-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/nn-13535022f6c387d0" "/opt/crater/target/debug/deps/nn-13535022f6c387d0.kbbfeoyn7124fdv.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libimageproc-59d555a46e4677f3.rlib" "/opt/crater/target/debug/deps/librand-700e1be26150ee95.rlib" "/opt/crater/target/debug/deps/librand_xorshift-7b19cb00158fa6fb.rlib" "/opt/crater/target/debug/deps/librand_pcg-65721c37f161e149.rlib" "/opt/crater/target/debug/deps/librand_hc-0652ab44c5db9eb2.rlib" "/opt/crater/target/debug/deps/librand_chacha-11361bf4dfc3f2ea.rlib" "/opt/crater/target/debug/deps/librand_isaac-a4f79f4126c1f25d.rlib" "/opt/crater/target/debug/deps/librand_core-4dce960811a60b1d.rlib" "/opt/crater/target/debug/deps/librand_os-2e6ff1a91fa64e23.rlib" "/opt/crater/target/debug/deps/librand_jitter-3f7e8a2892ed93ea.rlib" "/opt/crater/target/debug/deps/librand_core-948b7aad8fedc31f.rlib" "/opt/crater/target/debug/deps/libnum-03ef52be7906a78d.rlib" "/opt/crater/target/debug/deps/libnum_complex-331531259dc4e9ad.rlib" "/opt/crater/target/debug/deps/librusttype-27657c4ddb6e50cf.rlib" "/opt/crater/target/debug/deps/libstb_truetype-6270fc59f48cc416.rlib" "/opt/crater/target/debug/deps/libapprox-9db7b3ac54e9cf4f.rlib" "/opt/crater/target/debug/deps/libordered_float-253b3dd115f24a66.rlib" "/opt/crater/target/debug/deps/libconv-c3a66d35be0d66ea.rlib" "/opt/crater/target/debug/deps/libcustom_derive-7e9937418d07f6cf.rlib" "/opt/crater/target/debug/deps/libitertools-42e27b01991a8665.rlib" "/opt/crater/target/debug/deps/libimage-de37f2970799c519.rlib" "/opt/crater/target/debug/deps/libtiff-e157797bbfe2b3c0.rlib" "/opt/crater/target/debug/deps/libpng-b0a9ffdef38b6a3f.rlib" "/opt/crater/target/debug/deps/libdeflate-b1a8691029d64de7.rlib" "/opt/crater/target/debug/deps/libinflate-398663c07a1d51bf.rlib" "/opt/crater/target/debug/deps/libadler32-b7013a55566e2bf0.rlib" "/opt/crater/target/debug/deps/libbitflags-67998902f09e32c1.rlib" "/opt/crater/target/debug/deps/libjpeg_decoder-05ce4c7dd894fcc7.rlib" "/opt/crater/target/debug/deps/librayon-304730dcb1da27a5.rlib" "/opt/crater/target/debug/deps/libeither-0991b1b51775eba9.rlib" "/opt/crater/target/debug/deps/librayon_core-afc31d548d010a75.rlib" "/opt/crater/target/debug/deps/libnum_cpus-81f50d16fc740bc9.rlib" "/opt/crater/target/debug/deps/libcrossbeam_deque-3bf289b7bc14d293.rlib" "/opt/crater/target/debug/deps/libcrossbeam_epoch-5b3f899d22068e3e.rlib" "/opt/crater/target/debug/deps/libscopeguard-22a7afc64d55fe2c.rlib" "/opt/crater/target/debug/deps/libmemoffset-81f7e9a5af225363.rlib" "/opt/crater/target/debug/deps/liblazy_static-1f7a4359e40a6da9.rlib" "/opt/crater/target/debug/deps/libcrossbeam_utils-026d24b9961da4f1.rlib" "/opt/crater/target/debug/deps/libcfg_if-b3a66c4c913947fb.rlib" "/opt/crater/target/debug/deps/libarrayvec-af01a0d346bcce40.rlib" "/opt/crater/target/debug/deps/libnodrop-7f98e5f8ec110eeb.rlib" "/opt/crater/target/debug/deps/libscoped_threadpool-eca6c0c4d231bd1a.rlib" "/opt/crater/target/debug/deps/libgif-02f051460bbf1560.rlib" "/opt/crater/target/debug/deps/libcolor_quant-5c0942c00416f084.rlib" "/opt/crater/target/debug/deps/libnum_rational-d7f61bdd37e32045.rlib" "/opt/crater/target/debug/deps/libnum_bigint-548d17ecbb6db6cf.rlib" "/opt/crater/target/debug/deps/libnum_iter-f2184ef59f756cd0.rlib" "/opt/crater/target/debug/deps/libnum_integer-631260ef58ee2cea.rlib" "/opt/crater/target/debug/deps/libnum_traits-b79693a5d7e93180.rlib" "/opt/crater/target/debug/deps/liblzw-623507a6e6e9c8a7.rlib" "/opt/crater/target/debug/deps/libbyteorder-1a1b15f729bcf83c.rlib" "/opt/crater/target/debug/deps/libfann-10b6c9798bd7fc75.rlib" "/opt/crater/target/debug/deps/libfann_sys-e04aa68af2ca0406.rlib" "/opt/crater/target/debug/deps/liblibc-7030ceb90a849dae.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1d6d86bd078a28e9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e9721e46a424e2a9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-c07193698f282147.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-6da45690f3863086.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-690797036dd27680.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d3896ccbfd8eda2b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7cccc3739e3d7623.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-5e9ba178a513cd29.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-5ca9f83bf63d1f4b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-bba1c7ef9e950882.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-e23c9de62012deb5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9b59dffdcd513d5d.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-17392340ab2e4a97.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-ac21508a81e3f7f3.rlib" "-Wl,-Bdynamic" "-lfann" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lfann
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `nn`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "958157a4d9dcd655a7e1f02f81ea2438ffb710eaae52126a53e1820a4fc06f97"`
[INFO] running `"docker" "rm" "-f" "958157a4d9dcd655a7e1f02f81ea2438ffb710eaae52126a53e1820a4fc06f97"`
[INFO] [stdout] 958157a4d9dcd655a7e1f02f81ea2438ffb710eaae52126a53e1820a4fc06f97