[INFO] cloning repository https://github.com/lrlna/ramen-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lrlna/ramen-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flrlna%2Framen-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flrlna%2Framen-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9d897faac2bc8568ccc3d8b31945223549a5f395
[INFO] testing lrlna/ramen-rs against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flrlna%2Framen-rs" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lrlna/ramen-rs on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-11/source/Cargo.toml
[INFO] crate git repo https://github.com/lrlna/ramen-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ce912feb49e94c8b05a4bc5771f6a11dd539cdb3a46bb0bc3ae1c84e43edba9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0ce912feb49e94c8b05a4bc5771f6a11dd539cdb3a46bb0bc3ae1c84e43edba9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ce912feb49e94c8b05a4bc5771f6a11dd539cdb3a46bb0bc3ae1c84e43edba9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ce912feb49e94c8b05a4bc5771f6a11dd539cdb3a46bb0bc3ae1c84e43edba9", kill_on_drop: false }`
[INFO] [stdout] 0ce912feb49e94c8b05a4bc5771f6a11dd539cdb3a46bb0bc3ae1c84e43edba9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 337f868f30594ae48ffb7a5ae9b27bf012693593f9f4b4a17c9e608e3c87fb05
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "337f868f30594ae48ffb7a5ae9b27bf012693593f9f4b4a17c9e608e3c87fb05", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling lazy_static v1.0.2
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling rand_core v0.2.1
[INFO] [stderr]    Compiling ucd-util v0.1.1
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling indexmap v1.0.1
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling itoa v0.4.2
[INFO] [stderr]    Compiling md5 v0.3.7
[INFO] [stderr]    Compiling try_from v0.2.2
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling data-encoding v2.1.1
[INFO] [stderr]    Compiling separator v0.3.1
[INFO] [stderr]    Compiling bufstream v0.1.3
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.8
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling semver v0.8.0
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling base64 v0.9.2
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling rand v0.5.4
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling hostname v0.1.5
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling aho-corasick v0.6.6
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling chrono v0.4.4
[INFO] [stderr]    Compiling serde_derive v1.0.70
[INFO] [stderr]    Compiling serde_json v1.0.24
[INFO] [stderr]    Compiling scan_fmt v0.1.3
[INFO] [stderr]    Compiling bson v0.12.2
[INFO] [stderr]    Compiling textnonce v0.6.4
[INFO] [stderr]    Compiling mongodb v0.3.9
[INFO] [stderr]    Compiling rust-mongodb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::iter;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `&Cities` is not an iterator
[INFO] [stdout]    --> src/main.rs:36:27
[INFO] [stdout]     |
[INFO] [stdout] 36  |         for (key, val) in city {
[INFO] [stdout]     |                           ^^^^ `&Cities` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Iterator` is not implemented for `&Cities`
[INFO] [stdout]     = note: required because of the requirements on the impl of `IntoIterator` for `&Cities`
[INFO] [stdout] note: required by `into_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-mongodb` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "337f868f30594ae48ffb7a5ae9b27bf012693593f9f4b4a17c9e608e3c87fb05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "337f868f30594ae48ffb7a5ae9b27bf012693593f9f4b4a17c9e608e3c87fb05", kill_on_drop: false }`
[INFO] [stdout] 337f868f30594ae48ffb7a5ae9b27bf012693593f9f4b4a17c9e608e3c87fb05