[INFO] updating cached repository https://github.com/JosePedroDias/aoc2019
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 932860b15eddf3e1c0b76c8e0355a5e5f5ef7463
[INFO] testing JosePedroDias/aoc2019 against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosePedroDias%2Faoc2019" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JosePedroDias/aoc2019 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/JosePedroDias/aoc2019
[INFO] finished tweaking git repo https://github.com/JosePedroDias/aoc2019
[INFO] tweaked toml for git repo https://github.com/JosePedroDias/aoc2019 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/JosePedroDias/aoc2019 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=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-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f6ef113e3ba694b673e65e581201267cd86428361ee1b60c8931b7b48c68fe5a
[INFO] running `"docker" "start" "-a" "f6ef113e3ba694b673e65e581201267cd86428361ee1b60c8931b7b48c68fe5a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling aoc2019 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0277]: `std::cell::RefMut<'_, std::vec::Vec<&'static d06::Node>>` is not an iterator
[INFO] [stderr]   --> src/d06.rs:23:22
[INFO] [stderr]    |
[INFO] [stderr] 23 |         for child in self.children.borrow_mut() {
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^ `std::cell::RefMut<'_, std::vec::Vec<&'static d06::Node>>` is not an iterator
[INFO] [stderr]    |
[INFO] [stderr]    = help: the trait `std::iter::Iterator` is not implemented for `std::cell::RefMut<'_, std::vec::Vec<&'static d06::Node>>`
[INFO] [stderr]    = note: required by `std::iter::IntoIterator::into_iter`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/d06.rs:66:39
[INFO] [stderr]    |
[INFO] [stderr] 66 |         n1.children.borrow_mut().push(Rc::new(n2));
[INFO] [stderr]    |                                       ^^^^^^^^^^^
[INFO] [stderr]    |                                       |
[INFO] [stderr]    |                                       expected `&d06::Node`, found struct `std::rc::Rc`
[INFO] [stderr]    |                                       help: consider borrowing here: `&Rc::new(n2)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected reference `&'static d06::Node`
[INFO] [stderr]                  found struct `std::rc::Rc<d06::Node>`
[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 `aoc2019`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f6ef113e3ba694b673e65e581201267cd86428361ee1b60c8931b7b48c68fe5a"`
[INFO] running `"docker" "rm" "-f" "f6ef113e3ba694b673e65e581201267cd86428361ee1b60c8931b7b48c68fe5a"`
[INFO] [stdout] f6ef113e3ba694b673e65e581201267cd86428361ee1b60c8931b7b48c68fe5a