[INFO] updating cached repository nlordell/aoc-rs [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/nlordell/aoc-rs [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/nlordell/aoc-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/nlordell/aoc-rs"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/nlordell/aoc-rs'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/nlordell/aoc-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nlordell/aoc-rs"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nlordell/aoc-rs'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 5901e8242dbd0057e16bd21227802a6f64dfde7c [INFO] sha for GitHub repo nlordell/aoc-rs: 5901e8242dbd0057e16bd21227802a6f64dfde7c [INFO] validating manifest of nlordell/aoc-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 nlordell/aoc-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 nlordell/aoc-rs [INFO] finished frobbing nlordell/aoc-rs [INFO] frobbed toml for nlordell/aoc-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/nlordell/aoc-rs/Cargo.toml [INFO] started frobbing nlordell/aoc-rs [INFO] finished frobbing nlordell/aoc-rs [INFO] frobbed toml for nlordell/aoc-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nlordell/aoc-rs/Cargo.toml [INFO] crate nlordell/aoc-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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing nlordell/aoc-rs against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nlordell/aoc-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" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] a6d5616972e14b7a4d869d7296e8285e10e0a975dac27c2c70293d4d9ff52b7b [INFO] running `"docker" "start" "-a" "a6d5616972e14b7a4d869d7296e8285e10e0a975dac27c2c70293d4d9ff52b7b"` [INFO] [stderr] Compiling approx v0.3.0 [INFO] [stderr] Compiling rand v0.5.5 [INFO] [stderr] Compiling chrono v0.4.6 [INFO] [stderr] Compiling regex v1.1.0 [INFO] [stderr] Compiling alga v0.7.2 [INFO] [stderr] Compiling nalgebra v0.16.12 [INFO] [stderr] warning[E0502]: cannot borrow `*self` as immutable because it is also borrowed as mutable [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.16.12/src/base/cg.rs:291:44 [INFO] [stderr] | [INFO] [stderr] 291 | self[(j, i)] += shift[j] * self[(D::dim() - 1, i)]; [INFO] [stderr] | ---------------------------^^^^------------------- [INFO] [stderr] | | | [INFO] [stderr] | | immutable borrow occurs here [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | mutable borrow later used here [INFO] [stderr] | [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] Compiling aoc v0.1.0 (/opt/crater/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 { [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" "a6d5616972e14b7a4d869d7296e8285e10e0a975dac27c2c70293d4d9ff52b7b"` [INFO] running `"docker" "rm" "-f" "a6d5616972e14b7a4d869d7296e8285e10e0a975dac27c2c70293d4d9ff52b7b"` [INFO] [stdout] a6d5616972e14b7a4d869d7296e8285e10e0a975dac27c2c70293d4d9ff52b7b