[INFO] updating cached repository https://github.com/lrlna/ramen-rs
[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] 9d897faac2bc8568ccc3d8b31945223549a5f395
[INFO] checking lrlna/ramen-rs against beta-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flrlna%2Framen-rs" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lrlna/ramen-rs on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/lrlna/ramen-rs
[INFO] finished tweaking git repo https://github.com/lrlna/ramen-rs
[INFO] tweaked toml for git repo https://github.com/lrlna/ramen-rs written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/lrlna/ramen-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=allow" "-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-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 08ae2c87c9b77a586106b5e9c90d2a3452fb3811352280decd89724ca9716db1
[INFO] running `"docker" "start" "-a" "08ae2c87c9b77a586106b5e9c90d2a3452fb3811352280decd89724ca9716db1"`
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking serde_json v1.0.24
[INFO] [stderr]     Checking textnonce v0.6.4
[INFO] [stderr]     Checking bson v0.12.2
[INFO] [stderr]     Checking scan_fmt v0.1.3
[INFO] [stderr]     Checking mongodb v0.3.9
[INFO] [stderr]     Checking rust-mongodb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0277]: `&Cities` is not an iterator
[INFO] [stderr]   --> src/main.rs:36:27
[INFO] [stderr]    |
[INFO] [stderr] 36 |         for (key, val) in city {
[INFO] [stderr]    |                           ^^^^ `&Cities` is not an iterator
[INFO] [stderr]    |
[INFO] [stderr]    = help: the trait `std::iter::Iterator` is not implemented for `&Cities`
[INFO] [stderr]    = note: required by `std::iter::IntoIterator::into_iter`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: `&Cities` is not an iterator
[INFO] [stderr]   --> src/main.rs:36:27
[INFO] [stderr]    |
[INFO] [stderr] 36 |         for (key, val) in city {
[INFO] [stderr]    |                           ^^^^ `&Cities` is not an iterator
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr]    |
[INFO] [stderr]    = help: the trait `std::iter::Iterator` is not implemented for `&Cities`
[INFO] [stderr]    = note: required by `std::iter::IntoIterator::into_iter`
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `rust-mongodb`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `rust-mongodb`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "08ae2c87c9b77a586106b5e9c90d2a3452fb3811352280decd89724ca9716db1"`
[INFO] running `"docker" "rm" "-f" "08ae2c87c9b77a586106b5e9c90d2a3452fb3811352280decd89724ca9716db1"`
[INFO] [stdout] 08ae2c87c9b77a586106b5e9c90d2a3452fb3811352280decd89724ca9716db1