[INFO] cloning repository https://github.com/lolzballs/ntcp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lolzballs/ntcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flolzballs%2Fntcp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flolzballs%2Fntcp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 88c3db132aea844a3599c704c1dfcd86fc50f455
[INFO] checking lolzballs/ntcp against master#b2728d5426bab1d8c39709768c7e22b7f66dde5d for pr-135852
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flolzballs%2Fntcp" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lolzballs/ntcp on toolchain b2728d5426bab1d8c39709768c7e22b7f66dde5d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lolzballs/ntcp
[INFO] finished tweaking git repo https://github.com/lolzballs/ntcp
[INFO] tweaked toml for git repo https://github.com/lolzballs/ntcp written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/lolzballs/ntcp 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" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-0-tc1/source/examples/tunnel_client/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-0-tc1/source/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-0-tc1/source/examples/tunnel_server/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a24fa05a5ac7264cf333625b1974b28e1e0ffd3adfb622c4b5b3a335221f4bb0
[INFO] running `Command { std: "docker" "start" "-a" "a24fa05a5ac7264cf333625b1974b28e1e0ffd3adfb622c4b5b3a335221f4bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a24fa05a5ac7264cf333625b1974b28e1e0ffd3adfb622c4b5b3a335221f4bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a24fa05a5ac7264cf333625b1974b28e1e0ffd3adfb622c4b5b3a335221f4bb0", kill_on_drop: false }`
[INFO] [stdout] a24fa05a5ac7264cf333625b1974b28e1e0ffd3adfb622c4b5b3a335221f4bb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 13112f71c510065e5f1b3a66bf03b9eb1a8279ee62b26b0175836df438f56f7f
[INFO] running `Command { std: "docker" "start" "-a" "13112f71c510065e5f1b3a66bf03b9eb1a8279ee62b26b0175836df438f56f7f", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/examples/tunnel_server/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/examples/tunnel_client/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking libc v0.2.26
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]     Checking ntcp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/ipv4.rs:351:17
[INFO] [stdout]     |
[INFO] [stdout] 351 |                 (data[i] as u32)
[INFO] [stdout]     |                 ^              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 351 -                 (data[i] as u32)
[INFO] [stdout] 351 +                 data[i] as u32
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp`
[INFO] [stdout]  --> src/platform/raw.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/ipv4.rs:351:17
[INFO] [stdout]     |
[INFO] [stdout] 351 |                 (data[i] as u32)
[INFO] [stdout]     |                 ^              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 351 -                 (data[i] as u32)
[INFO] [stdout] 351 +                 data[i] as u32
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> src/platform/raw.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp`
[INFO] [stdout]  --> src/platform/raw.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/platform/raw.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let recvfd = try!(Self::create_recv_socket());
[INFO] [stdout]    |                      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> src/platform/raw.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/platform/raw.rs:72:22
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let sendfd = try!(Self::create_send_socket());
[INFO] [stdout]    |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/platform/raw.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let recvfd = try!(Self::create_recv_socket());
[INFO] [stdout]    |                      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/platform/raw.rs:72:22
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let sendfd = try!(Self::create_send_socket());
[INFO] [stdout]    |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/platform/raw.rs:74:20
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let ring = try!(Self::init_ringbuffer(recvfd));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/platform/raw.rs:74:20
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let ring = try!(Self::init_ringbuffer(recvfd));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr`
[INFO] [stdout]  --> src/socket/interface.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr`
[INFO] [stdout]  --> src/socket/interface.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MappedBuffer`
[INFO] [stdout]   --> src/socket/interface.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 | use platform::{MappedBuffer, RawSocket};
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MappedBuffer`
[INFO] [stdout]   --> src/socket/interface.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 | use platform::{MappedBuffer, RawSocket};
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/ipv4.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         return Ok(Packet { buffer: buffer });
[INFO] [stdout]    |         ------------------------------------ any code following this expression is unreachable
[INFO] [stdout] 50 |         let len = buffer.as_ref().len();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/ipv4.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         return Ok(Packet { buffer: buffer });
[INFO] [stdout]    |         ------------------------------------ any code following this expression is unreachable
[INFO] [stdout] 50 |         let len = buffer.as_ref().len();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:166:13
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let mut buf = self.buffer.as_mut();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:166:13
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let mut buf = self.buffer.as_mut();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:178:13
[INFO] [stdout]     |
[INFO] [stdout] 178 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:178:13
[INFO] [stdout]     |
[INFO] [stdout] 178 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:184:13
[INFO] [stdout]     |
[INFO] [stdout] 184 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:184:13
[INFO] [stdout]     |
[INFO] [stdout] 184 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:190:13
[INFO] [stdout]     |
[INFO] [stdout] 190 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:190:13
[INFO] [stdout]     |
[INFO] [stdout] 190 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:196:13
[INFO] [stdout]     |
[INFO] [stdout] 196 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:196:13
[INFO] [stdout]     |
[INFO] [stdout] 196 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:203:13
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:211:13
[INFO] [stdout]     |
[INFO] [stdout] 211 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:203:13
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:211:13
[INFO] [stdout]     |
[INFO] [stdout] 211 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:218:13
[INFO] [stdout]     |
[INFO] [stdout] 218 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:218:13
[INFO] [stdout]     |
[INFO] [stdout] 218 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:224:13
[INFO] [stdout]     |
[INFO] [stdout] 224 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:224:13
[INFO] [stdout]     |
[INFO] [stdout] 224 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:230:13
[INFO] [stdout]     |
[INFO] [stdout] 230 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:230:13
[INFO] [stdout]     |
[INFO] [stdout] 230 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:236:13
[INFO] [stdout]     |
[INFO] [stdout] 236 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:236:13
[INFO] [stdout]     |
[INFO] [stdout] 236 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:251:13
[INFO] [stdout]     |
[INFO] [stdout] 251 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ipv4.rs:251:13
[INFO] [stdout]     |
[INFO] [stdout] 251 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:173:13
[INFO] [stdout]     |
[INFO] [stdout] 173 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:179:13
[INFO] [stdout]     |
[INFO] [stdout] 179 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:173:13
[INFO] [stdout]     |
[INFO] [stdout] 173 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:185:13
[INFO] [stdout]     |
[INFO] [stdout] 185 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:179:13
[INFO] [stdout]     |
[INFO] [stdout] 179 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:185:13
[INFO] [stdout]     |
[INFO] [stdout] 185 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:197:13
[INFO] [stdout]     |
[INFO] [stdout] 197 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:204:13
[INFO] [stdout]     |
[INFO] [stdout] 204 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:197:13
[INFO] [stdout]     |
[INFO] [stdout] 197 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:211:13
[INFO] [stdout]     |
[INFO] [stdout] 211 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:204:13
[INFO] [stdout]     |
[INFO] [stdout] 204 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:221:13
[INFO] [stdout]     |
[INFO] [stdout] 221 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:211:13
[INFO] [stdout]     |
[INFO] [stdout] 211 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:221:13
[INFO] [stdout]     |
[INFO] [stdout] 221 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:241:13
[INFO] [stdout]     |
[INFO] [stdout] 241 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:251:13
[INFO] [stdout]     |
[INFO] [stdout] 251 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:241:13
[INFO] [stdout]     |
[INFO] [stdout] 241 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:261:13
[INFO] [stdout]     |
[INFO] [stdout] 261 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:251:13
[INFO] [stdout]     |
[INFO] [stdout] 251 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:271:13
[INFO] [stdout]     |
[INFO] [stdout] 271 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:261:13
[INFO] [stdout]     |
[INFO] [stdout] 261 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:281:13
[INFO] [stdout]     |
[INFO] [stdout] 281 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:271:13
[INFO] [stdout]     |
[INFO] [stdout] 271 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:291:13
[INFO] [stdout]     |
[INFO] [stdout] 291 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:281:13
[INFO] [stdout]     |
[INFO] [stdout] 281 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:301:13
[INFO] [stdout]     |
[INFO] [stdout] 301 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:307:13
[INFO] [stdout]     |
[INFO] [stdout] 307 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:291:13
[INFO] [stdout]     |
[INFO] [stdout] 291 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:313:13
[INFO] [stdout]     |
[INFO] [stdout] 313 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:301:13
[INFO] [stdout]     |
[INFO] [stdout] 301 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:307:13
[INFO] [stdout]     |
[INFO] [stdout] 307 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:313:13
[INFO] [stdout]     |
[INFO] [stdout] 313 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:336:13
[INFO] [stdout]     |
[INFO] [stdout] 336 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:342:13
[INFO] [stdout]     |
[INFO] [stdout] 342 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:336:13
[INFO] [stdout]     |
[INFO] [stdout] 336 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:342:13
[INFO] [stdout]     |
[INFO] [stdout] 342 |         let mut buf = self.buffer.as_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src_addr`
[INFO] [stdout]    --> src/tcp.rs:387:29
[INFO] [stdout]     |
[INFO] [stdout] 387 | ...                   src_addr: &ipv4::Address,
[INFO] [stdout]     |                       ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_src_addr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst_addr`
[INFO] [stdout]    --> src/tcp.rs:388:29
[INFO] [stdout]     |
[INFO] [stdout] 388 | ...                   dst_addr: &ipv4::Address)
[INFO] [stdout]     |                       ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dst_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src_addr`
[INFO] [stdout]    --> src/tcp.rs:387:29
[INFO] [stdout]     |
[INFO] [stdout] 387 | ...                   src_addr: &ipv4::Address,
[INFO] [stdout]     |                       ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_src_addr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst_addr`
[INFO] [stdout]    --> src/tcp.rs:388:29
[INFO] [stdout]     |
[INFO] [stdout] 388 | ...                   dst_addr: &ipv4::Address)
[INFO] [stdout]     |                       ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dst_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/platform/raw.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let mut header = unsafe {
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/platform/raw.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let mut header = unsafe {
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seq`
[INFO] [stdout]    --> src/socket/interface.rs:332:38
[INFO] [stdout]     |
[INFO] [stdout] 332 | ...                   seq: seq,
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_seq`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seq`
[INFO] [stdout]    --> src/socket/interface.rs:332:38
[INFO] [stdout]     |
[INFO] [stdout] 332 | ...                   seq: seq,
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_seq`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/socket/interface.rs:290:29
[INFO] [stdout]     |
[INFO] [stdout] 290 |                         let mut socket = socket_entry.get_mut();
[INFO] [stdout]     |                             ----^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/socket/interface.rs:315:29
[INFO] [stdout]     |
[INFO] [stdout] 315 |                         let mut socket = socket_entry.get_mut();
[INFO] [stdout]     |                             ----^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/socket/interface.rs:290:29
[INFO] [stdout]     |
[INFO] [stdout] 290 |                         let mut socket = socket_entry.get_mut();
[INFO] [stdout]     |                             ----^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/socket/interface.rs:315:29
[INFO] [stdout]     |
[INFO] [stdout] 315 |                         let mut socket = socket_entry.get_mut();
[INFO] [stdout]     |                             ----^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/socket/socket.rs:78:21
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 let mut buf = &mut buf[read_len..];
[INFO] [stdout]    |                     ----^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/socket/socket.rs:80:21
[INFO] [stdout]    |
[INFO] [stdout] 80 |                 let mut buf = &mut buf[..len];
[INFO] [stdout]    |                     ----^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/socket/socket.rs:78:21
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 let mut buf = &mut buf[read_len..];
[INFO] [stdout]    |                     ----^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/socket/socket.rs:80:21
[INFO] [stdout]    |
[INFO] [stdout] 80 |                 let mut buf = &mut buf[..len];
[INFO] [stdout]    |                     ----^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TP_STATUS_COPY` is never used
[INFO] [stdout]   --> src/platform/if_packet.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub const TP_STATUS_COPY: libc::c_ulong = 1 << 1;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TP_STATUS_LOSING` is never used
[INFO] [stdout]   --> src/platform/if_packet.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub const TP_STATUS_LOSING: libc::c_ulong = 1 << 2;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ring_offset` is never read
[INFO] [stdout]   --> src/platform/raw.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct RawSocket {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 66 |     ring_offset: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TP_STATUS_COPY` is never used
[INFO] [stdout]   --> src/platform/if_packet.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub const TP_STATUS_COPY: libc::c_ulong = 1 << 1;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TP_STATUS_LOSING` is never used
[INFO] [stdout]   --> src/platform/if_packet.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub const TP_STATUS_LOSING: libc::c_ulong = 1 << 2;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Closed` is never constructed
[INFO] [stdout]   --> src/socket/mod.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | enum SocketState {
[INFO] [stdout]    |      ----------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 25 |     Closed,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SocketState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RECV_BUF_LEN` is never used
[INFO] [stdout]   --> src/socket/interface.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const RECV_BUF_LEN: usize = 17000;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ring_offset` is never read
[INFO] [stdout]   --> src/platform/raw.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct RawSocket {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 66 |     ring_offset: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Closed` is never constructed
[INFO] [stdout]   --> src/socket/mod.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | enum SocketState {
[INFO] [stdout]    |      ----------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 25 |     Closed,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SocketState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RECV_BUF_LEN` is never used
[INFO] [stdout]   --> src/socket/interface.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const RECV_BUF_LEN: usize = 17000;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `seq:` in this pattern is redundant
[INFO] [stdout]    --> src/socket/interface.rs:243:32
[INFO] [stdout]     |
[INFO] [stdout] 243 | ...                   seq: ref mut seq,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `ref mut seq`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_shorthand_field_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `seq:` in this pattern is redundant
[INFO] [stdout]    --> src/socket/interface.rs:243:32
[INFO] [stdout]     |
[INFO] [stdout] 243 | ...                   seq: ref mut seq,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `ref mut seq`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_shorthand_field_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `ack:` in this pattern is redundant
[INFO] [stdout]    --> src/socket/interface.rs:244:32
[INFO] [stdout]     |
[INFO] [stdout] 244 | ...                   ack: ref mut ack,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `ref mut ack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `ack:` in this pattern is redundant
[INFO] [stdout]    --> src/socket/interface.rs:244:32
[INFO] [stdout]     |
[INFO] [stdout] 244 | ...                   ack: ref mut ack,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `ref mut ack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `ack:` in this pattern is redundant
[INFO] [stdout]    --> src/socket/interface.rs:331:33
[INFO] [stdout]     |
[INFO] [stdout] 331 | ...                   ack: ref mut ack,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `ref mut ack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `seq:` in this pattern is redundant
[INFO] [stdout]    --> src/socket/interface.rs:332:33
[INFO] [stdout]     |
[INFO] [stdout] 332 | ...                   seq: seq,
[INFO] [stdout]     |                       ^^^^^^^^ help: use shorthand field pattern: `seq`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `ack:` in this pattern is redundant
[INFO] [stdout]    --> src/socket/interface.rs:331:33
[INFO] [stdout]     |
[INFO] [stdout] 331 | ...                   ack: ref mut ack,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `ref mut ack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `seq:` in this pattern is redundant
[INFO] [stdout]    --> src/socket/interface.rs:332:33
[INFO] [stdout]     |
[INFO] [stdout] 332 | ...                   seq: seq,
[INFO] [stdout]     |                       ^^^^^^^^ help: use shorthand field pattern: `seq`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tunnel_client v0.1.0 (/opt/rustwide/workdir/examples/tunnel_client)
[INFO] [stderr]     Checking tunnel_server v0.1.0 (/opt/rustwide/workdir/examples/tunnel_server)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> examples/tunnel_client/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> examples/tunnel_server/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Socket`
[INFO] [stdout]   --> examples/tunnel_client/src/main.rs:11:51
[INFO] [stdout]    |
[INFO] [stdout] 11 | use ntcp::socket::{PacketBuffer, SocketInterface, Socket};
[INFO] [stdout]    |                                                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Socket`
[INFO] [stdout]   --> examples/tunnel_server/src/main.rs:11:51
[INFO] [stdout]    |
[INFO] [stdout] 11 | use ntcp::socket::{PacketBuffer, SocketInterface, Socket};
[INFO] [stdout]    |                                                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> examples/tunnel_client/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> examples/tunnel_server/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Socket`
[INFO] [stdout]   --> examples/tunnel_server/src/main.rs:11:51
[INFO] [stdout]    |
[INFO] [stdout] 11 | use ntcp::socket::{PacketBuffer, SocketInterface, Socket};
[INFO] [stdout]    |                                                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Socket`
[INFO] [stdout]   --> examples/tunnel_client/src/main.rs:11:51
[INFO] [stdout]    |
[INFO] [stdout] 11 | use ntcp::socket::{PacketBuffer, SocketInterface, Socket};
[INFO] [stdout]    |                                                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep`
[INFO] [stdout]   --> src/bin/main.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |     thread::sleep_ms(2000);
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep`
[INFO] [stdout]   --> src/bin/main.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |     thread::sleep_ms(2000);
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx`
[INFO] [stdout]   --> examples/tunnel_client/src/main.rs:14:38
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn create_client(mut tcp: TcpStream, tx: mpsc::Sender<Vec<u8>>, rx: mpsc::Receiver<Vec<u8>>) {
[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 variable: `rx`
[INFO] [stdout]   --> examples/tunnel_client/src/main.rs:14:65
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn create_client(mut tcp: TcpStream, tx: mpsc::Sender<Vec<u8>>, rx: mpsc::Receiver<Vec<u8>>) {
[INFO] [stdout]    |                                                                 ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx`
[INFO] [stdout]   --> examples/tunnel_client/src/main.rs:14:38
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn create_client(mut tcp: TcpStream, tx: mpsc::Sender<Vec<u8>>, rx: mpsc::Receiver<Vec<u8>>) {
[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 variable: `rx`
[INFO] [stdout]   --> examples/tunnel_client/src/main.rs:14:65
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn create_client(mut tcp: TcpStream, tx: mpsc::Sender<Vec<u8>>, rx: mpsc::Receiver<Vec<u8>>) {
[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]   --> examples/tunnel_client/src/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut socket = interface
[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: variable does not need to be mutable
[INFO] [stdout]   --> examples/tunnel_server/src/main.rs:37:39
[INFO] [stdout]    |
[INFO] [stdout] 37 | ...                   let mut buf = match rx.recv() {
[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: variable does not need to be mutable
[INFO] [stdout]   --> examples/tunnel_client/src/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut socket = interface
[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: unused variable: `send_rx`
[INFO] [stdout]   --> examples/tunnel_client/src/main.rs:53:23
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let (send_tx, send_rx) = mpsc::channel();
[INFO] [stdout]    |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_send_rx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `send_rx`
[INFO] [stdout]   --> examples/tunnel_client/src/main.rs:53:23
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let (send_tx, send_rx) = mpsc::channel();
[INFO] [stdout]    |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_send_rx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `recv_tx`
[INFO] [stdout]   --> examples/tunnel_client/src/main.rs:54:14
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let (recv_tx, recv_rx) = mpsc::channel();
[INFO] [stdout]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_recv_tx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `recv_tx`
[INFO] [stdout]   --> examples/tunnel_client/src/main.rs:54:14
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let (recv_tx, recv_rx) = mpsc::channel();
[INFO] [stdout]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_recv_tx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/tunnel_server/src/main.rs:37:39
[INFO] [stdout]    |
[INFO] [stdout] 37 | ...                   let mut buf = match rx.recv() {
[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: variable does not need to be mutable
[INFO] [stdout]   --> examples/tunnel_server/src/main.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |             let mut socket = match rx.recv() {
[INFO] [stdout]    |                 ----^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/tunnel_server/src/main.rs:33:17
[INFO] [stdout]    |
[INFO] [stdout] 33 |             let mut tcp = TcpStream::connect("127.0.0.1:25565").unwrap();
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/tunnel_server/src/main.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |             let mut socket = match rx.recv() {
[INFO] [stdout]    |                 ----^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/tunnel_server/src/main.rs:33:17
[INFO] [stdout]    |
[INFO] [stdout] 33 |             let mut tcp = TcpStream::connect("127.0.0.1:25565").unwrap();
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]   --> src/bin/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let len = socket.read(&mut buf).unwrap();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]   --> src/bin/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let len = socket.read(&mut buf).unwrap();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/tunnel_server/src/main.rs:53:39
[INFO] [stdout]    |
[INFO] [stdout] 53 | ...                   tx.send((endpoint, PacketBuffer::new(&buf[..len])));
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |                                       let _ = tx.send((endpoint, PacketBuffer::new(&buf[..len])));
[INFO] [stdout]    |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/tunnel_server/src/main.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     server.join();
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let _ = server.join();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/tunnel_server/src/main.rs:53:39
[INFO] [stdout]    |
[INFO] [stdout] 53 | ...                   tx.send((endpoint, PacketBuffer::new(&buf[..len])));
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |                                       let _ = tx.send((endpoint, PacketBuffer::new(&buf[..len])));
[INFO] [stdout]    |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/tunnel_server/src/main.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     server.join();
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let _ = server.join();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "13112f71c510065e5f1b3a66bf03b9eb1a8279ee62b26b0175836df438f56f7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13112f71c510065e5f1b3a66bf03b9eb1a8279ee62b26b0175836df438f56f7f", kill_on_drop: false }`
[INFO] [stdout] 13112f71c510065e5f1b3a66bf03b9eb1a8279ee62b26b0175836df438f56f7f