[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-1.37-6/sources/1.36.0/gh/nsmryan/MachineLearningArtProject"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/nsmryan/MachineLearningArtProject'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nsmryan/MachineLearningArtProject" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/nsmryan/MachineLearningArtProject"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nsmryan/MachineLearningArtProject 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 nsmryan/MachineLearningArtProject
[INFO] finished frobbing nsmryan/MachineLearningArtProject
[INFO] frobbed toml for nsmryan/MachineLearningArtProject written to work/ex/beta-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/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" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing nsmryan/MachineLearningArtProject against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 6d3b801b73101eaaed1563ab910b0e26148828a62e5fc183b59c1f07a4aad026
[INFO] running `"docker" "start" "-a" "6d3b801b73101eaaed1563ab910b0e26148828a62e5fc183b59c1f07a4aad026"`
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling fann-sys v0.1.7
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling fann v0.1.7
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling rusttype v0.7.6
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[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/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.nn.29mfbnp8-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221" "/opt/crater/target/debug/deps/nn-bc2c2f4bb7725221.3wywov9oh4bycf21.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libimageproc-847ff70a4f66b9f3.rlib" "/opt/crater/target/debug/deps/librand-1cd0e033f34adc78.rlib" "/opt/crater/target/debug/deps/librand_xorshift-6a66fc50e6498d00.rlib" "/opt/crater/target/debug/deps/librand_pcg-60ef83adabd8d47a.rlib" "/opt/crater/target/debug/deps/librand_hc-83283ab0a0ee3df8.rlib" "/opt/crater/target/debug/deps/librand_chacha-b9f5abd1824a7f75.rlib" "/opt/crater/target/debug/deps/librand_isaac-94fc18115e9afd61.rlib" "/opt/crater/target/debug/deps/librand_core-482fdfb44fe03c92.rlib" "/opt/crater/target/debug/deps/librand_os-7fea43cfc7d60fad.rlib" "/opt/crater/target/debug/deps/librand_jitter-4e4a4328edc945b8.rlib" "/opt/crater/target/debug/deps/librand_core-a9179eebc82cf0f0.rlib" "/opt/crater/target/debug/deps/libnum-12df29e65f8458de.rlib" "/opt/crater/target/debug/deps/libnum_complex-1395bcf1e6ad3d19.rlib" "/opt/crater/target/debug/deps/librusttype-eb4367fef1efe74a.rlib" "/opt/crater/target/debug/deps/libstb_truetype-9abaae7adc43710b.rlib" "/opt/crater/target/debug/deps/libapprox-cc7e285987fee772.rlib" "/opt/crater/target/debug/deps/libordered_float-08217b1741c51bc5.rlib" "/opt/crater/target/debug/deps/libconv-cd930dfb696cba6e.rlib" "/opt/crater/target/debug/deps/libcustom_derive-be1a8d395ce2f723.rlib" "/opt/crater/target/debug/deps/libitertools-9af663e131184260.rlib" "/opt/crater/target/debug/deps/libimage-dfb78e96b1e1f583.rlib" "/opt/crater/target/debug/deps/libtiff-66ae27d0aac696e0.rlib" "/opt/crater/target/debug/deps/libpng-55ef5fa8e73858f6.rlib" "/opt/crater/target/debug/deps/libdeflate-2ddad7786cae1082.rlib" "/opt/crater/target/debug/deps/libinflate-f270147f503dc3cc.rlib" "/opt/crater/target/debug/deps/libadler32-46acf8b49c11de91.rlib" "/opt/crater/target/debug/deps/libbitflags-6f632fff558bf385.rlib" "/opt/crater/target/debug/deps/libjpeg_decoder-107a52a55e6a2c7d.rlib" "/opt/crater/target/debug/deps/librayon-e528b4907fed2485.rlib" "/opt/crater/target/debug/deps/libeither-330d39b835267df2.rlib" "/opt/crater/target/debug/deps/librayon_core-48be1d1ff7d07986.rlib" "/opt/crater/target/debug/deps/libnum_cpus-2a11e90452da3c61.rlib" "/opt/crater/target/debug/deps/libcrossbeam_deque-eb7fed4aa5de22fc.rlib" "/opt/crater/target/debug/deps/libcrossbeam_epoch-c1d3d46b358bcde3.rlib" "/opt/crater/target/debug/deps/libscopeguard-f1a5efe88a6d7a2c.rlib" "/opt/crater/target/debug/deps/libmemoffset-97aaddce60f38adf.rlib" "/opt/crater/target/debug/deps/liblazy_static-35422c5bca3b6d90.rlib" "/opt/crater/target/debug/deps/libcrossbeam_utils-470059432d00b79c.rlib" "/opt/crater/target/debug/deps/libcfg_if-def391c8994540a5.rlib" "/opt/crater/target/debug/deps/libarrayvec-343471a3391f7ac8.rlib" "/opt/crater/target/debug/deps/libnodrop-e7a4f1c1f7749e1f.rlib" "/opt/crater/target/debug/deps/libscoped_threadpool-6d4da2a6693d38c4.rlib" "/opt/crater/target/debug/deps/libgif-31e7b7a6f3f51d41.rlib" "/opt/crater/target/debug/deps/libcolor_quant-8511fd5bfbc7d035.rlib" "/opt/crater/target/debug/deps/libnum_rational-2a448f2ad3f28b13.rlib" "/opt/crater/target/debug/deps/libnum_bigint-7bffdfb92429fd97.rlib" "/opt/crater/target/debug/deps/libnum_iter-2622bafef4ecde9b.rlib" "/opt/crater/target/debug/deps/libnum_integer-1de4c870aea09f38.rlib" "/opt/crater/target/debug/deps/libnum_traits-cd98387e0f6e90f9.rlib" "/opt/crater/target/debug/deps/liblzw-f7952389a69c619d.rlib" "/opt/crater/target/debug/deps/libbyteorder-a25b209c708b793b.rlib" "/opt/crater/target/debug/deps/libfann-6718e1c522a71cdf.rlib" "/opt/crater/target/debug/deps/libfann_sys-64ff233956ae5650.rlib" "/opt/crater/target/debug/deps/liblibc-d92e8aeb4b9edd4c.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-9895e8982b0a79e7.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-57306b8ed3378a0e.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-54463ae5adae3649.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-d99667b199a9875a.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-51f4300e102199f5.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-b3ccf1f7737a6a91.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-157c37a3ceb78853.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-505bcee45aafb736.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-c29abd529ba4452b.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-895383a3232f6572.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-5594cb4f559bc761.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-38e90baf978bc428.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" "6d3b801b73101eaaed1563ab910b0e26148828a62e5fc183b59c1f07a4aad026"`
[INFO] running `"docker" "rm" "-f" "6d3b801b73101eaaed1563ab910b0e26148828a62e5fc183b59c1f07a4aad026"`
[INFO] [stdout] 6d3b801b73101eaaed1563ab910b0e26148828a62e5fc183b59c1f07a4aad026