[INFO] updating cached repository https://github.com/nsmryan/MachineLearningArtProject
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f450c741a52bc78e7481e1bb3b039a671a1fe231
[INFO] testing nsmryan/MachineLearningArtProject against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnsmryan%2FMachineLearningArtProject" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nsmryan/MachineLearningArtProject on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/nsmryan/MachineLearningArtProject already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a15f586933148d847f198076f3f9da0b87b2ac7cea9f9918676dd7f3d1e08dd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1a15f586933148d847f198076f3f9da0b87b2ac7cea9f9918676dd7f3d1e08dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a15f586933148d847f198076f3f9da0b87b2ac7cea9f9918676dd7f3d1e08dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a15f586933148d847f198076f3f9da0b87b2ac7cea9f9918676dd7f3d1e08dd", kill_on_drop: false }`
[INFO] [stdout] 1a15f586933148d847f198076f3f9da0b87b2ac7cea9f9918676dd7f3d1e08dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 703f3f8c531d65b5c3f618a854d103e9899895c1913984f95be83dee2fedf1ac
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "703f3f8c531d65b5c3f618a854d103e9899895c1913984f95be83dee2fedf1ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.54
[INFO] [stderr]    Compiling cfg-if v0.1.7
[INFO] [stderr]    Compiling proc-macro2 v0.4.29
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling bitflags v1.0.5
[INFO] [stderr]    Compiling adler32 v1.0.3
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling lzw v0.10.0
[INFO] [stderr]    Compiling color_quant v1.0.1
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling stb_truetype v0.2.6
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling conv v0.3.3
[INFO] [stderr]    Compiling inflate v0.4.5
[INFO] [stderr]    Compiling deflate v0.7.19
[INFO] [stderr]    Compiling gif v0.10.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling rusttype v0.7.6
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling quote v0.6.12
[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 rayon-core v1.4.1
[INFO] [stderr]    Compiling fann v0.1.7
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rayon v1.0.3
[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] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/main.rs:75:34
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 .filter(|(index, val)| index % 3 == 0)
[INFO] [stdout]    |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/main.rs:76:24
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 .map(|(index, val)| (*val as f32) / 256.0)
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.nn.1ytghfqp-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823" "/opt/rustwide/target/debug/deps/nn-d0899317cbbca823.3i7day76krj40bcp.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libimageproc-66251ebc93e91137.rlib" "/opt/rustwide/target/debug/deps/librand-6908fd4f9ac7fa29.rlib" "/opt/rustwide/target/debug/deps/librand_xorshift-7ac0bbf33eab17c3.rlib" "/opt/rustwide/target/debug/deps/librand_pcg-2979a42224e86729.rlib" "/opt/rustwide/target/debug/deps/librand_hc-7616e3bb64dc5ef6.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-9a60c16312ff520f.rlib" "/opt/rustwide/target/debug/deps/librand_isaac-b2748fbbad7a886b.rlib" "/opt/rustwide/target/debug/deps/librand_core-9df86ead2ee4a580.rlib" "/opt/rustwide/target/debug/deps/librand_os-1dc4b0f2b312b310.rlib" "/opt/rustwide/target/debug/deps/librand_jitter-867248efe33f2c01.rlib" "/opt/rustwide/target/debug/deps/librand_core-28553c25b52e4ac6.rlib" "/opt/rustwide/target/debug/deps/libnum-c24565adc9f18c57.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-cc2e0d6d9cadb0c8.rlib" "/opt/rustwide/target/debug/deps/librusttype-a037148caefe40d0.rlib" "/opt/rustwide/target/debug/deps/libstb_truetype-e778488da2cc806d.rlib" "/opt/rustwide/target/debug/deps/libapprox-ae744ad5e334244d.rlib" "/opt/rustwide/target/debug/deps/libordered_float-adf199d3d2c08cb5.rlib" "/opt/rustwide/target/debug/deps/libconv-66edb158d317e873.rlib" "/opt/rustwide/target/debug/deps/libcustom_derive-8fe9d43c425b6772.rlib" "/opt/rustwide/target/debug/deps/libitertools-1f022bc1612ee8d9.rlib" "/opt/rustwide/target/debug/deps/libimage-56065527ee8190f6.rlib" "/opt/rustwide/target/debug/deps/libtiff-8cfc0d3ccc8398de.rlib" "/opt/rustwide/target/debug/deps/libpng-c021eac3a127729b.rlib" "/opt/rustwide/target/debug/deps/libdeflate-bc1fdee964070cd8.rlib" "/opt/rustwide/target/debug/deps/libinflate-5b823bd5a2125d0a.rlib" "/opt/rustwide/target/debug/deps/libadler32-9ecec324d4347fdf.rlib" "/opt/rustwide/target/debug/deps/libbitflags-00b3cc857effa2c6.rlib" "/opt/rustwide/target/debug/deps/libjpeg_decoder-004d4e01aeafca74.rlib" "/opt/rustwide/target/debug/deps/librayon-ab3a2a2569130b1b.rlib" "/opt/rustwide/target/debug/deps/libeither-10f8bd2ba2704983.rlib" "/opt/rustwide/target/debug/deps/librayon_core-81849d56bee9478c.rlib" "/opt/rustwide/target/debug/deps/libnum_cpus-e466230dd8831b05.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_deque-7aec08115a996f9e.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_epoch-d76d6813877e1a65.rlib" "/opt/rustwide/target/debug/deps/libscopeguard-ad4c3ad3e7604ff0.rlib" "/opt/rustwide/target/debug/deps/libmemoffset-6aac4dafce6b7963.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-95255a913897c8ce.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_utils-ec729e60302d5b59.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-2b29da9dc12a17e3.rlib" "/opt/rustwide/target/debug/deps/libarrayvec-22768ce7d0de8fe2.rlib" "/opt/rustwide/target/debug/deps/libnodrop-76fd22e4c35d3a0a.rlib" "/opt/rustwide/target/debug/deps/libscoped_threadpool-6c273243435ce414.rlib" "/opt/rustwide/target/debug/deps/libgif-f632a6c4d673f090.rlib" "/opt/rustwide/target/debug/deps/libcolor_quant-43e25ff04447f77f.rlib" "/opt/rustwide/target/debug/deps/libnum_rational-fffb3585542fab6c.rlib" "/opt/rustwide/target/debug/deps/libnum_bigint-3458ceef9d1f25bf.rlib" "/opt/rustwide/target/debug/deps/libnum_iter-209835137c786a05.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-0867ad1006a4ea10.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-0de210d470508289.rlib" "/opt/rustwide/target/debug/deps/liblzw-1663256aa41133c9.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-11de79069fb69c82.rlib" "/opt/rustwide/target/debug/deps/libfann-ef8217aed2144838.rlib" "/opt/rustwide/target/debug/deps/libfann_sys-83f58026e5b53087.rlib" "/opt/rustwide/target/debug/deps/liblibc-c0098da18c91400f.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-5989bcf78182f65e.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-4d6da34bc177af8d.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-10e0d6c948699482.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-c2318e2415657781.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-3815b93ed84badbb.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-d7999143d95238cb.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-c58298a0d40df8b8.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-b7de97e2ba6fb4e2.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-6f71c9f654d72cce.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-95ea48ddc44a311b.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-7402cd4761aebc14.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-68f423c59dc48a40.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-54580c7798bf2225.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-95a4d456339b7385.rlib" "-Wl,-Bdynamic" "-lfann" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lfann
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nn`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "703f3f8c531d65b5c3f618a854d103e9899895c1913984f95be83dee2fedf1ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "703f3f8c531d65b5c3f618a854d103e9899895c1913984f95be83dee2fedf1ac", kill_on_drop: false }`
[INFO] [stdout] 703f3f8c531d65b5c3f618a854d103e9899895c1913984f95be83dee2fedf1ac