[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 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/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 11d747d25f22c24a737cfde8712ad3755f9b367d5148d614af03cd93de654936
[INFO] running `"docker" "start" "-a" "11d747d25f22c24a737cfde8712ad3755f9b367d5148d614af03cd93de654936"`
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling fann-sys v0.1.7
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling conv v0.3.3
[INFO] [stderr]    Compiling fann v0.1.7
[INFO] [stderr]    Compiling rusttype v0.7.6
[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 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/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.nn.6pfbi0md-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6" "/opt/crater/target/debug/deps/nn-bc109cabb48f1bd6.2f55wn1eve11qgd9.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libimageproc-8875903fadcb2286.rlib" "/opt/crater/target/debug/deps/librand-5a971c94e360c80c.rlib" "/opt/crater/target/debug/deps/librand_xorshift-5e391b21601b8393.rlib" "/opt/crater/target/debug/deps/librand_pcg-e2e1a0d1728dcbd2.rlib" "/opt/crater/target/debug/deps/librand_hc-8d037a8bb74cc960.rlib" "/opt/crater/target/debug/deps/librand_chacha-caac59cbe4bbf74d.rlib" "/opt/crater/target/debug/deps/librand_isaac-8a1220a5cdc55703.rlib" "/opt/crater/target/debug/deps/librand_core-5af554ddf81cd17c.rlib" "/opt/crater/target/debug/deps/librand_os-bfc30c334326182c.rlib" "/opt/crater/target/debug/deps/librand_jitter-94868213c3989353.rlib" "/opt/crater/target/debug/deps/librand_core-4c9a550ae16dbf0f.rlib" "/opt/crater/target/debug/deps/libnum-50715f7eb067aa1b.rlib" "/opt/crater/target/debug/deps/libnum_complex-f709e2bb07b0e43b.rlib" "/opt/crater/target/debug/deps/librusttype-faff63a1f19ef501.rlib" "/opt/crater/target/debug/deps/libstb_truetype-822ddea7656aed01.rlib" "/opt/crater/target/debug/deps/libapprox-d39a656ef0530a51.rlib" "/opt/crater/target/debug/deps/libordered_float-68c8509eb8b7a0fe.rlib" "/opt/crater/target/debug/deps/libconv-5f7b7ed2178c4370.rlib" "/opt/crater/target/debug/deps/libcustom_derive-386d63636af2756a.rlib" "/opt/crater/target/debug/deps/libitertools-ec3709ec2ec15838.rlib" "/opt/crater/target/debug/deps/libimage-a4764a9cc8c02ad7.rlib" "/opt/crater/target/debug/deps/libtiff-27d450d00183b8f6.rlib" "/opt/crater/target/debug/deps/libpng-191d664a8b870efb.rlib" "/opt/crater/target/debug/deps/libdeflate-425afa8725be4b62.rlib" "/opt/crater/target/debug/deps/libinflate-73f2a2165924ce25.rlib" "/opt/crater/target/debug/deps/libadler32-71d1acce3b38b1ac.rlib" "/opt/crater/target/debug/deps/libbitflags-e31ad08aaa94ea6a.rlib" "/opt/crater/target/debug/deps/libjpeg_decoder-e9acdc2856569383.rlib" "/opt/crater/target/debug/deps/librayon-295df96af8238dae.rlib" "/opt/crater/target/debug/deps/libeither-09ec7c1188b8d0d0.rlib" "/opt/crater/target/debug/deps/librayon_core-8506f6fbf8a61c41.rlib" "/opt/crater/target/debug/deps/libnum_cpus-9407d7bd608f3e03.rlib" "/opt/crater/target/debug/deps/libcrossbeam_deque-6483fc52e99fe9de.rlib" "/opt/crater/target/debug/deps/libcrossbeam_epoch-347a996482b858ed.rlib" "/opt/crater/target/debug/deps/libscopeguard-afc08b825b950866.rlib" "/opt/crater/target/debug/deps/libmemoffset-ef971ccc3957ca71.rlib" "/opt/crater/target/debug/deps/liblazy_static-6a4e8ea56a445919.rlib" "/opt/crater/target/debug/deps/libcrossbeam_utils-a88bdfda26d15bdc.rlib" "/opt/crater/target/debug/deps/libcfg_if-ed68c9a1ad96df3c.rlib" "/opt/crater/target/debug/deps/libarrayvec-940fecd1aefd4712.rlib" "/opt/crater/target/debug/deps/libnodrop-36ce0cdfb7359e6a.rlib" "/opt/crater/target/debug/deps/libscoped_threadpool-840c5083dfb1a3e8.rlib" "/opt/crater/target/debug/deps/libgif-614cf814e165f989.rlib" "/opt/crater/target/debug/deps/libcolor_quant-c3bf5cef789459d6.rlib" "/opt/crater/target/debug/deps/libnum_rational-c26b85bba6625c96.rlib" "/opt/crater/target/debug/deps/libnum_bigint-5422f56f8ad7a76b.rlib" "/opt/crater/target/debug/deps/libnum_iter-9773bcf1e2992ab2.rlib" "/opt/crater/target/debug/deps/libnum_integer-09198f7f07b77d29.rlib" "/opt/crater/target/debug/deps/libnum_traits-b0613bcbd790bfdc.rlib" "/opt/crater/target/debug/deps/liblzw-0ccf98a99dabc5af.rlib" "/opt/crater/target/debug/deps/libbyteorder-301089d538415037.rlib" "/opt/crater/target/debug/deps/libfann-0e1488bb90c6fa0f.rlib" "/opt/crater/target/debug/deps/libfann_sys-7b61ff6f261d058a.rlib" "/opt/crater/target/debug/deps/liblibc-6adf852fd4f18ec9.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-a80a1e8e09cafef8.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e0e6351da805c468.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-e04f54bafc95e331.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-67901d3322495bd5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-bd390b1abaceaec1.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-312dd37fdc7bedfc.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-8ed0e51d58d644a3.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-8a423c320a6c707f.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-d6a95598e2238263.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d231614b153016eb.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-3821619027f463e4.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-1cfd794d18771a44.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-dcf33cf10c2452ef.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-c258fea34bf64bce.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" "11d747d25f22c24a737cfde8712ad3755f9b367d5148d614af03cd93de654936"`
[INFO] running `"docker" "rm" "-f" "11d747d25f22c24a737cfde8712ad3755f9b367d5148d614af03cd93de654936"`
[INFO] [stdout] 11d747d25f22c24a737cfde8712ad3755f9b367d5148d614af03cd93de654936