[INFO] updating cached repository mneumann/neat-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mneumann/neat-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mneumann/neat-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/mneumann/neat-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mneumann/neat-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mneumann/neat-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mneumann/neat-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mneumann/neat-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 854a09f6a712d2844f7d526e9f33f0c743e525fc
[INFO] sha for GitHub repo mneumann/neat-rs: 854a09f6a712d2844f7d526e9f33f0c743e525fc
[INFO] validating manifest of mneumann/neat-rs 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 mneumann/neat-rs 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 mneumann/neat-rs
[INFO] finished frobbing mneumann/neat-rs
[INFO] frobbed toml for mneumann/neat-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/mneumann/neat-rs/Cargo.toml
[INFO] started frobbing mneumann/neat-rs
[INFO] finished frobbing mneumann/neat-rs
[INFO] frobbed toml for mneumann/neat-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mneumann/neat-rs/Cargo.toml
[INFO] crate mneumann/neat-rs 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] [stderr]     Updating git repository `https://github.com/mneumann/cppn-rs`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mneumann/neat-rs/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/mneumann/acyclic-network-rs`
[INFO] [stderr]     Updating git repository `https://github.com/mneumann/cppn-rs`
[INFO] [stderr]     Updating git repository `https://github.com/nikomatsakis/rayon`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/mneumann/acyclic-network-rs`
[INFO] [stderr]     Updating git repository `https://github.com/mneumann/cppn-rs`
[INFO] [stderr]     Updating git repository `https://github.com/nikomatsakis/rayon`
[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 mneumann/neat-rs against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mneumann/neat-rs:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] c32f44ea74ed2c114b3c858df5d116b682f3566de7058032638061da2ad9566c
[INFO] running `"docker" "start" "-a" "c32f44ea74ed2c114b3c858df5d116b682f3566de7058032638061da2ad9566c"`
[INFO] [stderr]    Compiling rayon-core v1.6.0 (https://github.com/nikomatsakis/rayon#83b67e27)
[INFO] [stderr]    Compiling acyclic-network v0.2.0
[INFO] [stderr]    Compiling acyclic-network v0.2.0 (https://github.com/mneumann/acyclic-network-rs#6d36d562)
[INFO] [stderr]    Compiling nalgebra v0.5.1
[INFO] [stderr]    Compiling cppn v0.3.0 (https://github.com/mneumann/cppn-rs#14346a84)
[INFO] [stderr]    Compiling rayon v1.2.0 (https://github.com/nikomatsakis/rayon#83b67e27)
[INFO] [stderr]    Compiling closed01 v0.4.0
[INFO] [stderr]    Compiling neat v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::num::Zero`
[INFO] [stderr]  --> src/fitness.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::num::Zero;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^ no `Zero` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rayon::par_iter`
[INFO] [stderr]   --> src/population.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 | use rayon::par_iter::*;
[INFO] [stderr]    |            ^^^^^^^^ could not find `par_iter` in `rayon`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(iter_arith, zero_one)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rayon::par_iter::*`
[INFO] [stderr]   --> src/population.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use rayon::par_iter::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `neat`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c32f44ea74ed2c114b3c858df5d116b682f3566de7058032638061da2ad9566c"`
[INFO] running `"docker" "rm" "-f" "c32f44ea74ed2c114b3c858df5d116b682f3566de7058032638061da2ad9566c"`
[INFO] [stdout] c32f44ea74ed2c114b3c858df5d116b682f3566de7058032638061da2ad9566c