[INFO] cloning repository https://github.com/lrlna/ramen-rs
[INFO] running `"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"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flrlna%2Framen-rs'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9d897faac2bc8568ccc3d8b31945223549a5f395
[INFO] checking lrlna/ramen-rs against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flrlna%2Framen-rs" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lrlna/ramen-rs on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "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-1/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" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=forbid" "-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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] 884493eb435574026a3b9e4e15424c35911b526fbd73f250fcbae47fe616eae2
[INFO] running `"docker" "start" "-a" "884493eb435574026a3b9e4e15424c35911b526fbd73f250fcbae47fe616eae2"`
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]     Checking lazy_static v1.0.2
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking indexmap v1.0.1
[INFO] [stderr]     Checking itoa v0.4.2
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]     Checking data-encoding v2.1.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.8
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking semver v0.8.0
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking base64 v0.9.2
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking rand v0.5.4
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]     Checking chrono v0.4.4
[INFO] [stderr]    Compiling serde_derive v1.0.70
[INFO] [stderr]     Checking scan_fmt v0.1.3
[INFO] [stderr]     Checking serde_json v1.0.24
[INFO] [stderr]     Checking bson v0.12.2
[INFO] [stderr]     Checking textnonce v0.6.4
[INFO] [stderr]     Checking mongodb v0.3.9
[INFO] [stderr]     Checking rust-mongodb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::iter;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[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]    |
[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: aborting due to previous error; 1 warning emitted
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::iter;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[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]    |
[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: aborting due to previous error; 1 warning emitted
[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" "884493eb435574026a3b9e4e15424c35911b526fbd73f250fcbae47fe616eae2"`
[INFO] running `"docker" "rm" "-f" "884493eb435574026a3b9e4e15424c35911b526fbd73f250fcbae47fe616eae2"`
[INFO] [stdout] 884493eb435574026a3b9e4e15424c35911b526fbd73f250fcbae47fe616eae2