[INFO] updating cached repository https://github.com/nsmryan/MachineLearningArtProject
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f450c741a52bc78e7481e1bb3b039a671a1fe231
[INFO] testing nsmryan/MachineLearningArtProject against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnsmryan%2FMachineLearningArtProject" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nsmryan/MachineLearningArtProject on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/nsmryan/MachineLearningArtProject
[INFO] finished tweaking git repo https://github.com/nsmryan/MachineLearningArtProject
[INFO] tweaked toml for git repo https://github.com/nsmryan/MachineLearningArtProject written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/nsmryan/MachineLearningArtProject already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] ed5b1d9820b793f0d582e647bf4bcfaeeb2d2ffcd2e28c88e9e34b3166408f1b
[INFO] running `"docker" "start" "-a" "ed5b1d9820b793f0d582e647bf4bcfaeeb2d2ffcd2e28c88e9e34b3166408f1b"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.29
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[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 num-iter v0.1.37
[INFO] [stderr]    Compiling conv v0.3.3
[INFO] [stderr]    Compiling rusttype v0.7.6
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling fann v0.1.7
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling quote v0.6.12
[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 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/rustwide/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] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.nn.6m3mrxyl-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170" "/opt/rustwide/target/debug/deps/nn-5187fa97048f6170.35e3sfhtntb72cel.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libimageproc-4597ed8a9e1a22b8.rlib" "/opt/rustwide/target/debug/deps/librand-f598223bc8928a82.rlib" "/opt/rustwide/target/debug/deps/librand_xorshift-788e08e4e9b857db.rlib" "/opt/rustwide/target/debug/deps/librand_pcg-e41477ef205dc899.rlib" "/opt/rustwide/target/debug/deps/librand_hc-a413bb2c7ba70585.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-71d15c312716f348.rlib" "/opt/rustwide/target/debug/deps/librand_isaac-4874caa1590f70f4.rlib" "/opt/rustwide/target/debug/deps/librand_core-92c2f35314396599.rlib" "/opt/rustwide/target/debug/deps/librand_os-0d1ad10acf93321a.rlib" "/opt/rustwide/target/debug/deps/librand_jitter-378cddb3053a68b1.rlib" "/opt/rustwide/target/debug/deps/librand_core-bcfcf7c2a1d9c9e3.rlib" "/opt/rustwide/target/debug/deps/libnum-de5a2a5d4c0e67a8.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-8280fd00403f28b8.rlib" "/opt/rustwide/target/debug/deps/librusttype-4a780c8a537a255e.rlib" "/opt/rustwide/target/debug/deps/libstb_truetype-14ba2d45799cd7cf.rlib" "/opt/rustwide/target/debug/deps/libapprox-1d091005cdade538.rlib" "/opt/rustwide/target/debug/deps/libordered_float-e26dfeb14f5e4cd8.rlib" "/opt/rustwide/target/debug/deps/libconv-d32da5e0cae27c92.rlib" "/opt/rustwide/target/debug/deps/libcustom_derive-e06c84889de65d67.rlib" "/opt/rustwide/target/debug/deps/libitertools-4e3fb447a04075d9.rlib" "/opt/rustwide/target/debug/deps/libimage-ec42ac2f836bec25.rlib" "/opt/rustwide/target/debug/deps/libtiff-dcc23819cd9083c8.rlib" "/opt/rustwide/target/debug/deps/libpng-8b93941312c5cdd5.rlib" "/opt/rustwide/target/debug/deps/libdeflate-8c5fc3f4c31251f7.rlib" "/opt/rustwide/target/debug/deps/libinflate-65056e5186e54958.rlib" "/opt/rustwide/target/debug/deps/libadler32-2b2d9f2ac243fcce.rlib" "/opt/rustwide/target/debug/deps/libbitflags-3ad3a98e065287de.rlib" "/opt/rustwide/target/debug/deps/libjpeg_decoder-98f6ace1d3d2b261.rlib" "/opt/rustwide/target/debug/deps/librayon-0cd8619d8b51226c.rlib" "/opt/rustwide/target/debug/deps/libeither-3ff9439ba8ae7387.rlib" "/opt/rustwide/target/debug/deps/librayon_core-a7e8883ffb42210e.rlib" "/opt/rustwide/target/debug/deps/libnum_cpus-d38a3842c1765d71.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_deque-41757069a8b186c6.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_epoch-cef32989f45fda87.rlib" "/opt/rustwide/target/debug/deps/libscopeguard-5d24109de20616f8.rlib" "/opt/rustwide/target/debug/deps/libmemoffset-eb3783781a55ffc1.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-806f5cf8273b470a.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_utils-f1ab5d9f8d75fe86.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-d370f336a6df3de2.rlib" "/opt/rustwide/target/debug/deps/libarrayvec-7eedab7f8bfec471.rlib" "/opt/rustwide/target/debug/deps/libnodrop-0ca5cda255c03c42.rlib" "/opt/rustwide/target/debug/deps/libscoped_threadpool-ef5771575dd16434.rlib" "/opt/rustwide/target/debug/deps/libgif-a7668698c7c60670.rlib" "/opt/rustwide/target/debug/deps/libcolor_quant-fc3d0bd14341a68f.rlib" "/opt/rustwide/target/debug/deps/libnum_rational-196e0f75650e28ae.rlib" "/opt/rustwide/target/debug/deps/libnum_bigint-3dc0772b273df140.rlib" "/opt/rustwide/target/debug/deps/libnum_iter-baafcc571f15ec34.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-3416add372f82fa7.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-cb412cedb055b888.rlib" "/opt/rustwide/target/debug/deps/liblzw-cee06389c23927f5.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-3ef1f6ebaa6479a4.rlib" "/opt/rustwide/target/debug/deps/libfann-904ec8a12bac5479.rlib" "/opt/rustwide/target/debug/deps/libfann_sys-3bc393b2e4a9eef8.rlib" "/opt/rustwide/target/debug/deps/liblibc-d04cbd7d2ffaea7d.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-12ce12f1efc08aa3.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-5d3cd1b3ddab72e4.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-f8222943dfd167e2.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-0cd00b2d3108cd48.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-485c05ba6ce1b438.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-63e6b1072426ba59.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-a421aff1d43911ee.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-3deef8ef4fe80dff.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-f65a176f0586269e.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-ad46d4080f4d7e57.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-da6c590582bf0885.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-837ca740df32db0a.rlib" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-db27c965e824589f.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.38.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-68a4f8466685ed76.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" "ed5b1d9820b793f0d582e647bf4bcfaeeb2d2ffcd2e28c88e9e34b3166408f1b"`
[INFO] running `"docker" "rm" "-f" "ed5b1d9820b793f0d582e647bf4bcfaeeb2d2ffcd2e28c88e9e34b3166408f1b"`
[INFO] [stdout] ed5b1d9820b793f0d582e647bf4bcfaeeb2d2ffcd2e28c88e9e34b3166408f1b