[INFO] updating cached repository https://github.com/dat2/rust_zeromq_examples
[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] 34cf668a59a70f3d63bb6043bce4b5f990deb327
[INFO] checking dat2/rust_zeromq_examples against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdat2%2Frust_zeromq_examples" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dat2/rust_zeromq_examples on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-6/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 `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/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[INFO] the lockfile is outdated, regenerating it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 `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/erickt/rust-zmq.git`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] b2223ff504b09aca51d16e8fc14e02268622aec3bac52b8ed0c390fb4b9750d8
[INFO] running `"docker" "start" "-a" "b2223ff504b09aca51d16e8fc14e02268622aec3bac52b8ed0c390fb4b9750d8"`
[INFO] [stderr]    Compiling zmq v0.9.2 (https://github.com/erickt/rust-zmq.git#2b9bb436)
[INFO] [stderr]    Compiling zmq-sys v0.11.0 (https://github.com/erickt/rust-zmq.git#2b9bb436)
[INFO] [stderr]     Checking rust_zeromq_examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:70:7
[INFO] [stderr]    |
[INFO] [stderr] 70 |       try!(socket.send(&frame.body, zmq::SNDMORE));
[INFO] [stderr]    |       ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     try!(socket.send(&last.body, 0));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:81:18
[INFO] [stderr]    |
[INFO] [stderr] 81 |       let part = try!(socket.recv_bytes(0));
[INFO] [stderr]    |                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:84:24
[INFO] [stderr]    |
[INFO] [stderr] 84 |       let more_parts = try!(socket.get_rcvmore());
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:113:7
[INFO] [stderr]     |
[INFO] [stderr] 113 |       try!(write!(f, "[{}]", frame));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:70:7
[INFO] [stderr]    |
[INFO] [stderr] 70 |       try!(socket.send(&frame.body, zmq::SNDMORE));
[INFO] [stderr]    |       ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     try!(socket.send(&last.body, 0));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:81:18
[INFO] [stderr]    |
[INFO] [stderr] 81 |       let part = try!(socket.recv_bytes(0));
[INFO] [stderr]    |                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:84:24
[INFO] [stderr]    |
[INFO] [stderr] 84 |       let more_parts = try!(socket.get_rcvmore());
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:113:7
[INFO] [stderr]     |
[INFO] [stderr] 113 |       try!(write!(f, "[{}]", frame));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `titanic`
[INFO] [stderr]  --> src/mdpworker.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate titanic;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error[E0463]: can't find crate for `titanic`
[INFO] [stderr]  --> src/mdpworker.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate titanic;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `rust_zeromq_examples`.
[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] error: could not compile `rust_zeromq_examples`.
[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 variable: `empty`
[INFO] [stderr]   --> src/mdpbroker.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let empty = request.pop();
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_empty`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/mdpbroker.rs:13:7
[INFO] [stderr]    |
[INFO] [stderr] 13 |   let mut context = zmq::Context::new();
[INFO] [stderr]    |       ----^^^^^^^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/mdpbroker.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     reply.send(&mut socket);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/mdpclient.rs:32:7
[INFO] [stderr]    |
[INFO] [stderr] 32 |   let mut context = zmq::Context::new();
[INFO] [stderr]    |       ----^^^^^^^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/mdpclient.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     body.send(&mut socket);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `empty`
[INFO] [stderr]   --> src/mdpbroker.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let empty = request.pop();
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_empty`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/mdpbroker.rs:13:7
[INFO] [stderr]    |
[INFO] [stderr] 13 |   let mut context = zmq::Context::new();
[INFO] [stderr]    |       ----^^^^^^^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/mdpbroker.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     reply.send(&mut socket);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/mdpclient.rs:32:7
[INFO] [stderr]    |
[INFO] [stderr] 32 |   let mut context = zmq::Context::new();
[INFO] [stderr]    |       ----^^^^^^^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/mdpclient.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     body.send(&mut socket);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "b2223ff504b09aca51d16e8fc14e02268622aec3bac52b8ed0c390fb4b9750d8"`
[INFO] running `"docker" "rm" "-f" "b2223ff504b09aca51d16e8fc14e02268622aec3bac52b8ed0c390fb4b9750d8"`
[INFO] [stdout] b2223ff504b09aca51d16e8fc14e02268622aec3bac52b8ed0c390fb4b9750d8
