[INFO] updating cached repository https://github.com/nlordell/aoc-rs
[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] 5901e8242dbd0057e16bd21227802a6f64dfde7c
[INFO] testing nlordell/aoc-rs against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnlordell%2Faoc-rs" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nlordell/aoc-rs on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/nlordell/aoc-rs
[INFO] finished tweaking git repo https://github.com/nlordell/aoc-rs
[INFO] tweaked toml for git repo https://github.com/nlordell/aoc-rs written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/nlordell/aoc-rs already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 116432364a3fbe72dfc88dbec75a8e9146bca5dd8ba37d8e4b80675450391e7b
[INFO] running `"docker" "start" "-a" "116432364a3fbe72dfc88dbec75a8e9146bca5dd8ba37d8e4b80675450391e7b"`
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling openssl v0.10.15
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling libm v0.1.2
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling approx v0.3.0
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling generic-array v0.11.1
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling alga v0.7.2
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling nalgebra v0.16.12
[INFO] [stderr]    Compiling aoc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0277]: `()` is not an iterator
[INFO] [stderr]    --> src/year2015/day22.rs:128:31
[INFO] [stderr]     |
[INFO] [stderr] 128 |     fn valid_spells(&self) -> impl Iterator<Item = Spell> {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `()` is not an iterator
[INFO] [stderr]     |
[INFO] [stderr]     = help: the trait `std::iter::Iterator` is not implemented for `()`
[INFO] [stderr]     = note: the return type of a function must have a statically known size
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/year2015/day22.rs:123:41
[INFO] [stderr]     |
[INFO] [stderr] 123 |     fn can_cast(&self, spell: Spell) -> bool {
[INFO] [stderr]     |        --------                         ^^^^ expected bool, found ()
[INFO] [stderr]     |        |
[INFO] [stderr]     |        implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `bool`
[INFO] [stderr]                found type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0277, E0308.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `aoc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "116432364a3fbe72dfc88dbec75a8e9146bca5dd8ba37d8e4b80675450391e7b"`
[INFO] running `"docker" "rm" "-f" "116432364a3fbe72dfc88dbec75a8e9146bca5dd8ba37d8e4b80675450391e7b"`
[INFO] [stdout] 116432364a3fbe72dfc88dbec75a8e9146bca5dd8ba37d8e4b80675450391e7b