Dec 18 04:56:44.731 INFO checking Voronchikhin/networking_labs against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 04:56:44.731 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/Voronchikhin/networking_labs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 04:56:45.109 INFO [stdout] 171dea4f3137a2b80b30768863b95045f7bad0b66ec9e1300a7ec941db93c5f8
Dec 18 04:56:45.114 INFO running `"docker" "start" "-a" "171dea4f3137a2b80b30768863b95045f7bad0b66ec9e1300a7ec941db93c5f8"`
Dec 18 04:56:46.158 INFO [stderr]     Checking Multicaster v0.1.0 (/opt/crater/workdir)
Dec 18 04:56:46.521 INFO [stderr] warning: unused import: `net2`
Dec 18 04:56:46.521 INFO [stderr]   --> src/main.rs:10:5
Dec 18 04:56:46.521 INFO [stderr]    |
Dec 18 04:56:46.521 INFO [stderr] 10 | use net2::*;
Dec 18 04:56:46.521 INFO [stderr]    |     ^^^^
Dec 18 04:56:46.521 INFO [stderr]    |
Dec 18 04:56:46.521 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 04:56:46.521 INFO [stderr] 
Dec 18 04:56:46.521 INFO [stderr] warning: unused variable: `buffer`
Dec 18 04:56:46.521 INFO [stderr]   --> src/main.rs:19:9
Dec 18 04:56:46.521 INFO [stderr]    |
Dec 18 04:56:46.521 INFO [stderr] 19 |     let buffer = [0u8; 1600];
Dec 18 04:56:46.521 INFO [stderr]    |         ^^^^^^ help: consider using `_buffer` instead
Dec 18 04:56:46.521 INFO [stderr]    |
Dec 18 04:56:46.521 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 04:56:46.521 INFO [stderr] 
Dec 18 04:56:46.521 INFO [stderr] warning: unused variable: `e`
Dec 18 04:56:46.521 INFO [stderr]   --> src/main.rs:26:17
Dec 18 04:56:46.521 INFO [stderr]    |
Dec 18 04:56:46.521 INFO [stderr] 26 |             Err(e)   => println!("sending error"),
Dec 18 04:56:46.521 INFO [stderr]    |                 ^ help: consider using `_e` instead
Dec 18 04:56:46.521 INFO [stderr] 
Dec 18 04:56:46.521 INFO [stderr] warning: unused variable: `v4_addr`
Dec 18 04:56:46.521 INFO [stderr]   --> src/main.rs:40:20
Dec 18 04:56:46.521 INFO [stderr]    |
Dec 18 04:56:46.521 INFO [stderr] 40 |         IpAddr::V4(v4_addr) => UdpBuilder::new_v4(),
Dec 18 04:56:46.521 INFO [stderr]    |                    ^^^^^^^ help: consider using `_v4_addr` instead
Dec 18 04:56:46.521 INFO [stderr] 
Dec 18 04:56:46.521 INFO [stderr] warning: unused variable: `v6_addr`
Dec 18 04:56:46.521 INFO [stderr]   --> src/main.rs:41:20
Dec 18 04:56:46.521 INFO [stderr]    |
Dec 18 04:56:46.521 INFO [stderr] 41 |         IpAddr::V6(v6_addr) => UdpBuilder::new_v6(),
Dec 18 04:56:46.521 INFO [stderr]    |                    ^^^^^^^ help: consider using `_v6_addr` instead
Dec 18 04:56:46.521 INFO [stderr] 
Dec 18 04:56:46.552 INFO [stderr] warning: crate `Multicaster` should have a snake case name such as `multicaster`
Dec 18 04:56:46.552 INFO [stderr]   |
Dec 18 04:56:46.552 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 18 04:56:46.552 INFO [stderr] 
Dec 18 04:56:46.552 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:56:46.552 INFO [stderr]   --> src/main.rs:50:5
Dec 18 04:56:46.552 INFO [stderr]    |
Dec 18 04:56:46.552 INFO [stderr] 50 |     socket.set_read_timeout(Option::from(Duration::from_secs(3)));
Dec 18 04:56:46.552 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:46.552 INFO [stderr]    |
Dec 18 04:56:46.552 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 04:56:46.552 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:56:46.552 INFO [stderr] 
Dec 18 04:56:46.552 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:56:46.552 INFO [stderr]   --> src/main.rs:73:5
Dec 18 04:56:46.552 INFO [stderr]    |
Dec 18 04:56:46.552 INFO [stderr] 73 |     _sender_handle.unwrap().join();
Dec 18 04:56:46.552 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:46.552 INFO [stderr]    |
Dec 18 04:56:46.552 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:56:46.552 INFO [stderr] 
Dec 18 04:56:46.552 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:56:46.552 INFO [stderr]   --> src/main.rs:74:5
Dec 18 04:56:46.552 INFO [stderr]    |
Dec 18 04:56:46.552 INFO [stderr] 74 |     _listener_handle.unwrap().join();
Dec 18 04:56:46.552 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:46.552 INFO [stderr] warning: unused import: `net2`
Dec 18 04:56:46.552 INFO [stderr]   --> src/main.rs:10:5
Dec 18 04:56:46.552 INFO [stderr]    |
Dec 18 04:56:46.552 INFO [stderr] 10 | use net2::*;
Dec 18 04:56:46.552 INFO [stderr]    |     ^^^^
Dec 18 04:56:46.552 INFO [stderr]    |
Dec 18 04:56:46.552 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 04:56:46.552 INFO [stderr] 
Dec 18 04:56:46.552 INFO [stderr]    |
Dec 18 04:56:46.552 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:56:46.552 INFO [stderr] 
Dec 18 04:56:46.556 INFO [stderr] warning: unused variable: `buffer`
Dec 18 04:56:46.556 INFO [stderr]   --> src/main.rs:19:9
Dec 18 04:56:46.556 INFO [stderr]    |
Dec 18 04:56:46.556 INFO [stderr] 19 |     let buffer = [0u8; 1600];
Dec 18 04:56:46.556 INFO [stderr]    |         ^^^^^^ help: consider using `_buffer` instead
Dec 18 04:56:46.556 INFO [stderr]    |
Dec 18 04:56:46.556 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 04:56:46.556 INFO [stderr] 
Dec 18 04:56:46.556 INFO [stderr] warning: unused variable: `e`
Dec 18 04:56:46.556 INFO [stderr]   --> src/main.rs:26:17
Dec 18 04:56:46.556 INFO [stderr]    |
Dec 18 04:56:46.556 INFO [stderr] 26 |             Err(e)   => println!("sending error"),
Dec 18 04:56:46.556 INFO [stderr]    |                 ^ help: consider using `_e` instead
Dec 18 04:56:46.556 INFO [stderr] 
Dec 18 04:56:46.556 INFO [stderr] warning: unused variable: `v4_addr`
Dec 18 04:56:46.556 INFO [stderr]   --> src/main.rs:40:20
Dec 18 04:56:46.556 INFO [stderr]    |
Dec 18 04:56:46.556 INFO [stderr] 40 |         IpAddr::V4(v4_addr) => UdpBuilder::new_v4(),
Dec 18 04:56:46.556 INFO [stderr]    |                    ^^^^^^^ help: consider using `_v4_addr` instead
Dec 18 04:56:46.556 INFO [stderr] 
Dec 18 04:56:46.556 INFO [stderr] warning: unused variable: `v6_addr`
Dec 18 04:56:46.556 INFO [stderr]   --> src/main.rs:41:20
Dec 18 04:56:46.556 INFO [stderr]    |
Dec 18 04:56:46.556 INFO [stderr] 41 |         IpAddr::V6(v6_addr) => UdpBuilder::new_v6(),
Dec 18 04:56:46.557 INFO [stderr]    |                    ^^^^^^^ help: consider using `_v6_addr` instead
Dec 18 04:56:46.557 INFO [stderr] 
Dec 18 04:56:46.636 INFO [stderr] warning: crate `Multicaster` should have a snake case name such as `multicaster`
Dec 18 04:56:46.636 INFO [stderr]   |
Dec 18 04:56:46.636 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 18 04:56:46.636 INFO [stderr] 
Dec 18 04:56:46.636 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:56:46.636 INFO [stderr]   --> src/main.rs:50:5
Dec 18 04:56:46.636 INFO [stderr]    |
Dec 18 04:56:46.636 INFO [stderr] 50 |     socket.set_read_timeout(Option::from(Duration::from_secs(3)));
Dec 18 04:56:46.636 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:46.637 INFO [stderr]    |
Dec 18 04:56:46.637 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 04:56:46.637 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:56:46.637 INFO [stderr] 
Dec 18 04:56:46.637 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:56:46.637 INFO [stderr]   --> src/main.rs:73:5
Dec 18 04:56:46.637 INFO [stderr]    |
Dec 18 04:56:46.637 INFO [stderr] 73 |     _sender_handle.unwrap().join();
Dec 18 04:56:46.637 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:46.637 INFO [stderr]    |
Dec 18 04:56:46.637 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:56:46.637 INFO [stderr] 
Dec 18 04:56:46.637 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:56:46.637 INFO [stderr]   --> src/main.rs:74:5
Dec 18 04:56:46.637 INFO [stderr]    |
Dec 18 04:56:46.637 INFO [stderr] 74 |     _listener_handle.unwrap().join();
Dec 18 04:56:46.637 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:46.637 INFO [stderr]    |
Dec 18 04:56:46.637 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:56:46.637 INFO [stderr] 
Dec 18 04:56:46.696 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
Dec 18 04:56:47.444 INFO running `"docker" "inspect" "171dea4f3137a2b80b30768863b95045f7bad0b66ec9e1300a7ec941db93c5f8"`
Dec 18 04:56:47.710 INFO running `"docker" "rm" "-f" "171dea4f3137a2b80b30768863b95045f7bad0b66ec9e1300a7ec941db93c5f8"`
Dec 18 04:56:48.049 INFO [stdout] 171dea4f3137a2b80b30768863b95045f7bad0b66ec9e1300a7ec941db93c5f8