[INFO] cloning repository https://github.com/SubconsciousCompute/udp-multicast-expr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SubconsciousCompute/udp-multicast-expr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSubconsciousCompute%2Fudp-multicast-expr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSubconsciousCompute%2Fudp-multicast-expr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e75fe7ac395fa331b42bf78e46c100bc90ead416
[INFO] checking SubconsciousCompute/udp-multicast-expr/e75fe7ac395fa331b42bf78e46c100bc90ead416 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSubconsciousCompute%2Fudp-multicast-expr" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SubconsciousCompute/udp-multicast-expr on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SubconsciousCompute/udp-multicast-expr
[INFO] finished tweaking git repo https://github.com/SubconsciousCompute/udp-multicast-expr
[INFO] tweaked toml for git repo https://github.com/SubconsciousCompute/udp-multicast-expr written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/SubconsciousCompute/udp-multicast-expr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded machine-uid v0.3.0
[INFO] [stderr]   Downloaded winreg v0.11.0
[INFO] [stderr]   Downloaded serde_json v1.0.96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ee55d38b2d3ff823e81fa814914dda452cc8a7fc29e6642465c8a5cddeca344
[INFO] running `Command { std: "docker" "start" "-a" "0ee55d38b2d3ff823e81fa814914dda452cc8a7fc29e6642465c8a5cddeca344", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ee55d38b2d3ff823e81fa814914dda452cc8a7fc29e6642465c8a5cddeca344", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ee55d38b2d3ff823e81fa814914dda452cc8a7fc29e6642465c8a5cddeca344", kill_on_drop: false }`
[INFO] [stdout] 0ee55d38b2d3ff823e81fa814914dda452cc8a7fc29e6642465c8a5cddeca344
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd6f7cae40e155bf747e6128511e97eb829df223cab1aba765ff2d28f0e6f8b6
[INFO] running `Command { std: "docker" "start" "-a" "fd6f7cae40e155bf747e6128511e97eb829df223cab1aba765ff2d28f0e6f8b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling proc-macro2 v1.0.60
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling serde v1.0.164
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling tokio v1.28.2
[INFO] [stderr]     Checking machine-uid v0.3.0
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.164
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking udp-multicast-expr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `SocketAddr`
[INFO] [stdout]  --> src/main.rs:4:29
[INFO] [stdout]   |
[INFO] [stdout] 4 |     net::{IpAddr, Ipv4Addr, SocketAddr, SocketAddrV4},
[INFO] [stdout]   |                             ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | /     loop {
[INFO] [stdout] 61 | |         let mut buf = [0u8; 2048];
[INFO] [stdout] 62 | |         if let Ok(Ok((len, source))) = tokio::time::timeout(
[INFO] [stdout] 63 | |             std::time::Duration::from_secs(30),
[INFO] [stdout] ...  |
[INFO] [stdout] 80 | |         }
[INFO] [stdout] 81 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 82 |
[INFO] [stdout] 83 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx`
[INFO] [stdout]   --> src/main.rs:54:21
[INFO] [stdout]    |
[INFO] [stdout] 54 | async fn listen(mut tx: tokio::sync::mpsc::Sender<(Ipv4Addr, u16)>) -> Result<()> {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SocketAddr`
[INFO] [stdout]  --> src/main.rs:4:29
[INFO] [stdout]   |
[INFO] [stdout] 4 |     net::{IpAddr, Ipv4Addr, SocketAddr, SocketAddrV4},
[INFO] [stdout]   |                             ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 | async fn listen(mut tx: tokio::sync::mpsc::Sender<(Ipv4Addr, u16)>) -> Result<()> {
[INFO] [stdout]    |                 ----^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 93  | /     loop {
[INFO] [stdout] 94  | |         socket
[INFO] [stdout] 95  | |             .send(&bincode::serialize(&msg).unwrap())
[INFO] [stdout] 96  | |             .await
[INFO] [stdout] 97  | |             .unwrap();
[INFO] [stdout] 98  | |         std::thread::sleep(Duration::from_secs(30));
[INFO] [stdout] 99  | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 100 |
[INFO] [stdout] 101 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx`
[INFO] [stdout]   --> src/main.rs:86:19
[INFO] [stdout]    |
[INFO] [stdout] 86 | async fn cast(mut rx: tokio::sync::mpsc::Receiver<String>, msg: Discover) -> Result<()> {
[INFO] [stdout]    |                   ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:86:15
[INFO] [stdout]    |
[INFO] [stdout] 86 | async fn cast(mut rx: tokio::sync::mpsc::Receiver<String>, msg: Discover) -> Result<()> {
[INFO] [stdout]    |               ----^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | /     loop {
[INFO] [stdout] 61 | |         let mut buf = [0u8; 2048];
[INFO] [stdout] 62 | |         if let Ok(Ok((len, source))) = tokio::time::timeout(
[INFO] [stdout] 63 | |             std::time::Duration::from_secs(30),
[INFO] [stdout] ...  |
[INFO] [stdout] 80 | |         }
[INFO] [stdout] 81 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 82 |
[INFO] [stdout] 83 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx`
[INFO] [stdout]   --> src/main.rs:54:21
[INFO] [stdout]    |
[INFO] [stdout] 54 | async fn listen(mut tx: tokio::sync::mpsc::Sender<(Ipv4Addr, u16)>) -> Result<()> {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 | async fn listen(mut tx: tokio::sync::mpsc::Sender<(Ipv4Addr, u16)>) -> Result<()> {
[INFO] [stdout]    |                 ----^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 93  | /     loop {
[INFO] [stdout] 94  | |         socket
[INFO] [stdout] 95  | |             .send(&bincode::serialize(&msg).unwrap())
[INFO] [stdout] 96  | |             .await
[INFO] [stdout] 97  | |             .unwrap();
[INFO] [stdout] 98  | |         std::thread::sleep(Duration::from_secs(30));
[INFO] [stdout] 99  | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 100 |
[INFO] [stdout] 101 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx`
[INFO] [stdout]   --> src/main.rs:86:19
[INFO] [stdout]    |
[INFO] [stdout] 86 | async fn cast(mut rx: tokio::sync::mpsc::Receiver<String>, msg: Discover) -> Result<()> {
[INFO] [stdout]    |                   ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:86:15
[INFO] [stdout]    |
[INFO] [stdout] 86 | async fn cast(mut rx: tokio::sync::mpsc::Receiver<String>, msg: Discover) -> Result<()> {
[INFO] [stdout]    |               ----^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx`
[INFO] [stdout]    --> src/main.rs:121:10
[INFO] [stdout]     |
[INFO] [stdout] 121 |     let (tx, rx) = tokio::sync::mpsc::channel(10);
[INFO] [stdout]     |          ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx`
[INFO] [stdout]    --> src/main.rs:121:10
[INFO] [stdout]     |
[INFO] [stdout] 121 |     let (tx, rx) = tokio::sync::mpsc::channel(10);
[INFO] [stdout]     |          ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.83s
[INFO] running `Command { std: "docker" "inspect" "fd6f7cae40e155bf747e6128511e97eb829df223cab1aba765ff2d28f0e6f8b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd6f7cae40e155bf747e6128511e97eb829df223cab1aba765ff2d28f0e6f8b6", kill_on_drop: false }`
[INFO] [stdout] fd6f7cae40e155bf747e6128511e97eb829df223cab1aba765ff2d28f0e6f8b6