[INFO] cloning repository https://github.com/dat2/rust_zeromq_examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dat2/rust_zeromq_examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdat2%2Frust_zeromq_examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdat2%2Frust_zeromq_examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34cf668a59a70f3d63bb6043bce4b5f990deb327
[INFO] documenting dat2/rust_zeromq_examples against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdat2%2Frust_zeromq_examples" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dat2/rust_zeromq_examples on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dat2/rust_zeromq_examples
[INFO] finished tweaking git repo https://github.com/dat2/rust_zeromq_examples
[INFO] tweaked toml for git repo https://github.com/dat2/rust_zeromq_examples written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/dat2/rust_zeromq_examples already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-4/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/erickt/rust-zmq.git`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1dda71b19ec3c6db84da2041805e60f6d1f54cba46dee4fb13bcae3b8e1de6c5
[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" "1dda71b19ec3c6db84da2041805e60f6d1f54cba46dee4fb13bcae3b8e1de6c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1dda71b19ec3c6db84da2041805e60f6d1f54cba46dee4fb13bcae3b8e1de6c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dda71b19ec3c6db84da2041805e60f6d1f54cba46dee4fb13bcae3b8e1de6c5", kill_on_drop: false }`
[INFO] [stdout] 1dda71b19ec3c6db84da2041805e60f6d1f54cba46dee4fb13bcae3b8e1de6c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 073066ddeddf44b1db26d94c9b26250857041db7c5cd88fe6b818d77f0fc5822
[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" "073066ddeddf44b1db26d94c9b26250857041db7c5cd88fe6b818d77f0fc5822", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling zmq v0.9.2 (https://github.com/erickt/rust-zmq.git#eede4315)
[INFO] [stderr]    Compiling zmq-sys v0.11.0 (https://github.com/erickt/rust-zmq.git#eede4315)
[INFO] [stderr]     Checking rust_zeromq_examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting rust_zeromq_examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:70:7
[INFO] [stdout]    |
[INFO] [stdout] 70 |       try!(socket.send(&frame.body, zmq::SNDMORE));
[INFO] [stdout]    |       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     try!(socket.send(&last.body, 0));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:81:18
[INFO] [stdout]    |
[INFO] [stdout] 81 |       let part = try!(socket.recv_bytes(0));
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:84:24
[INFO] [stdout]    |
[INFO] [stdout] 84 |       let more_parts = try!(socket.get_rcvmore());
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:113:7
[INFO] [stdout]     |
[INFO] [stdout] 113 |       try!(write!(f, "[{}]", frame));
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `titanic`
[INFO] [stdout]  --> src/mdpworker.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate titanic;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `rust_zeromq_examples`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name mdpworker src/mdpworker.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern zhelpers=/opt/rustwide/target/debug/deps/libzhelpers-080a96301d55c8d6.rmeta --extern zmq=/opt/rustwide/target/debug/deps/libzmq-979320d5addcabb2.rmeta --cap-lints=warn` (exit code: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "073066ddeddf44b1db26d94c9b26250857041db7c5cd88fe6b818d77f0fc5822", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "073066ddeddf44b1db26d94c9b26250857041db7c5cd88fe6b818d77f0fc5822", kill_on_drop: false }`
[INFO] [stdout] 073066ddeddf44b1db26d94c9b26250857041db7c5cd88fe6b818d77f0fc5822