[INFO] cloning repository https://github.com/arthur-teixeira/tcp-ip-stack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arthur-teixeira/tcp-ip-stack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farthur-teixeira%2Ftcp-ip-stack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farthur-teixeira%2Ftcp-ip-stack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 146dc0ea80a490f7351e12970d1ceb23c0bb5669
[INFO] checking arthur-teixeira/tcp-ip-stack against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farthur-teixeira%2Ftcp-ip-stack" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/arthur-teixeira/tcp-ip-stack
[INFO] finished tweaking git repo https://github.com/arthur-teixeira/tcp-ip-stack
[INFO] tweaked toml for git repo https://github.com/arthur-teixeira/tcp-ip-stack written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/arthur-teixeira/tcp-ip-stack on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/arthur-teixeira/tcp-ip-stack 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7743e86e51e4faac0fa80441dd1f354745776c1da531cb46a67d70fcdbc096db
[INFO] running `Command { std: "docker" "start" "-a" "7743e86e51e4faac0fa80441dd1f354745776c1da531cb46a67d70fcdbc096db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7743e86e51e4faac0fa80441dd1f354745776c1da531cb46a67d70fcdbc096db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7743e86e51e4faac0fa80441dd1f354745776c1da531cb46a67d70fcdbc096db", kill_on_drop: false }`
[INFO] [stdout] 7743e86e51e4faac0fa80441dd1f354745776c1da531cb46a67d70fcdbc096db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6fac260aa7239cf5d753e063d0de21098eb25c2f71845bd72df4ed2632bf7435
[INFO] running `Command { std: "docker" "start" "-a" "6fac260aa7239cf5d753e063d0de21098eb25c2f71845bd72df4ed2632bf7435", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]    Compiling cc v1.0.95
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking ifstructs v0.1.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking bitfield v0.15.0
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking dashmap v5.5.3
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling tun-tap v0.1.4
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.18
[INFO] [stderr]     Checking tcp-ip v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `wait`
[INFO] [stdout]  --> src/sock_types.rs:1:48
[INFO] [stdout]   |
[INFO] [stdout] 1 | use libc::{c_int, size_t, sockaddr, socklen_t, wait};
[INFO] [stdout]   |                                                ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wait`
[INFO] [stdout]  --> src/sock_types.rs:1:48
[INFO] [stdout]   |
[INFO] [stdout] 1 | use libc::{c_int, size_t, sockaddr, socklen_t, wait};
[INFO] [stdout]   |                                                ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wait`
[INFO] [stdout]  --> src/sock_types.rs:1:48
[INFO] [stdout]   |
[INFO] [stdout] 1 | use libc::{c_int, size_t, sockaddr, socklen_t, wait};
[INFO] [stdout]   |                                                ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fs::copy`
[INFO] [stdout]  --> src/socket.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fs::copy,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wait`
[INFO] [stdout]  --> src/sock_types.rs:1:48
[INFO] [stdout]   |
[INFO] [stdout] 1 | use libc::{c_int, size_t, sockaddr, socklen_t, wait};
[INFO] [stdout]   |                                                ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fs::copy`
[INFO] [stdout]  --> src/socket.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fs::copy,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `addr_in` is assigned to, but never used
[INFO] [stdout]    --> src/socket.rs:226:25
[INFO] [stdout]     |
[INFO] [stdout] 226 |                     let mut addr_in;
[INFO] [stdout]     |                         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_addr_in` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `addr_in` is never read
[INFO] [stdout]    --> src/socket.rs:228:25
[INFO] [stdout]     |
[INFO] [stdout] 228 |                         addr_in = *(addr as *mut sockaddr_in);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `addr_in` is never read
[INFO] [stdout]    --> src/socket.rs:231:21
[INFO] [stdout]     |
[INFO] [stdout] 231 |                     addr_in.sin_port = quad.src.1;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `addr_in` is never read
[INFO] [stdout]    --> src/socket.rs:232:21
[INFO] [stdout]     |
[INFO] [stdout] 232 |                     addr_in.sin_family = AF_INET as u16;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `addr_in` is never read
[INFO] [stdout]    --> src/socket.rs:233:21
[INFO] [stdout]     |
[INFO] [stdout] 233 |                     addr_in.sin_addr.s_addr = quad.src.0.into();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]    --> src/socket.rs:263:27
[INFO] [stdout]     |
[INFO] [stdout] 263 |     fn connect(&mut self, addr: *const sockaddr, addrlen: socklen_t) -> i32 {
[INFO] [stdout]     |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addrlen`
[INFO] [stdout]    --> src/socket.rs:263:50
[INFO] [stdout]     |
[INFO] [stdout] 263 |     fn connect(&mut self, addr: *const sockaddr, addrlen: socklen_t) -> i32 {
[INFO] [stdout]     |                                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_addrlen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/socket.rs:267:25
[INFO] [stdout]     |
[INFO] [stdout] 267 |     fn write(&mut self, buf: &Vec<u8>) -> i32 {
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sockfd`
[INFO] [stdout]    --> src/socket.rs:603:5
[INFO] [stdout]     |
[INFO] [stdout] 603 |     sockfd: i32,
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sockfd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]    --> src/socket.rs:604:5
[INFO] [stdout]     |
[INFO] [stdout] 604 |     addr: *const sockaddr,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addrlen`
[INFO] [stdout]    --> src/socket.rs:605:5
[INFO] [stdout]     |
[INFO] [stdout] 605 |     addrlen: socklen_t,
[INFO] [stdout]     |     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_addrlen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `manager`
[INFO] [stdout]    --> src/socket.rs:606:5
[INFO] [stdout]     |
[INFO] [stdout] 606 |     manager: Option<&Mutex<SocketManager>>,
[INFO] [stdout]     |     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_manager`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `addr_in` is assigned to, but never used
[INFO] [stdout]    --> src/socket.rs:226:25
[INFO] [stdout]     |
[INFO] [stdout] 226 |                     let mut addr_in;
[INFO] [stdout]     |                         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_addr_in` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `addr_in` is never read
[INFO] [stdout]    --> src/socket.rs:228:25
[INFO] [stdout]     |
[INFO] [stdout] 228 |                         addr_in = *(addr as *mut sockaddr_in);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `addr_in` is never read
[INFO] [stdout]    --> src/socket.rs:231:21
[INFO] [stdout]     |
[INFO] [stdout] 231 |                     addr_in.sin_port = quad.src.1;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `addr_in` is never read
[INFO] [stdout]    --> src/socket.rs:232:21
[INFO] [stdout]     |
[INFO] [stdout] 232 |                     addr_in.sin_family = AF_INET as u16;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `addr_in` is never read
[INFO] [stdout]    --> src/socket.rs:233:21
[INFO] [stdout]     |
[INFO] [stdout] 233 |                     addr_in.sin_addr.s_addr = quad.src.0.into();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]    --> src/socket.rs:263:27
[INFO] [stdout]     |
[INFO] [stdout] 263 |     fn connect(&mut self, addr: *const sockaddr, addrlen: socklen_t) -> i32 {
[INFO] [stdout]     |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addrlen`
[INFO] [stdout]    --> src/socket.rs:263:50
[INFO] [stdout]     |
[INFO] [stdout] 263 |     fn connect(&mut self, addr: *const sockaddr, addrlen: socklen_t) -> i32 {
[INFO] [stdout]     |                                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_addrlen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/socket.rs:267:25
[INFO] [stdout]     |
[INFO] [stdout] 267 |     fn write(&mut self, buf: &Vec<u8>) -> i32 {
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sockfd`
[INFO] [stdout]    --> src/socket.rs:603:5
[INFO] [stdout]     |
[INFO] [stdout] 603 |     sockfd: i32,
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sockfd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]    --> src/socket.rs:604:5
[INFO] [stdout]     |
[INFO] [stdout] 604 |     addr: *const sockaddr,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addrlen`
[INFO] [stdout]    --> src/socket.rs:605:5
[INFO] [stdout]     |
[INFO] [stdout] 605 |     addrlen: socklen_t,
[INFO] [stdout]     |     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_addrlen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `manager`
[INFO] [stdout]    --> src/socket.rs:606:5
[INFO] [stdout]     |
[INFO] [stdout] 606 |     manager: Option<&Mutex<SocketManager>>,
[INFO] [stdout]     |     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_manager`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_udp_socket` is never used
[INFO] [stdout]   --> src/main.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn create_udp_socket() -> Result<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_tcp_socket` is never used
[INFO] [stdout]   --> src/main.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn create_tcp_socket() -> Result<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tcp_loop` is never used
[INFO] [stdout]   --> src/main.rs:94:4
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn tcp_loop() -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write_u32` is never used
[INFO] [stdout]   --> src/buf_writer.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl BufWriter {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn write_u32(&mut self, val: u32) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `addr` and `mtu` are never read
[INFO] [stdout]   --> src/route.rs:7:9
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct Netdev {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout]  7 |     pub addr: Ipv4Addr,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub mtu: u32,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Netdev` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `metrics` is never read
[INFO] [stdout]   --> src/route.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Route {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub metrics: u32,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_udp_socket` is never used
[INFO] [stdout]   --> src/main.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn create_udp_socket() -> Result<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_tcp_socket` is never used
[INFO] [stdout]   --> src/main.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn create_tcp_socket() -> Result<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tcp_loop` is never used
[INFO] [stdout]   --> src/main.rs:94:4
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn tcp_loop() -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write_u32` is never used
[INFO] [stdout]   --> src/buf_writer.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl BufWriter {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn write_u32(&mut self, val: u32) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `addr` and `mtu` are never read
[INFO] [stdout]   --> src/route.rs:7:9
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct Netdev {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout]  7 |     pub addr: Ipv4Addr,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub mtu: u32,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Netdev` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `metrics` is never read
[INFO] [stdout]   --> src/route.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Route {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub metrics: u32,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.48s
[INFO] running `Command { std: "docker" "inspect" "6fac260aa7239cf5d753e063d0de21098eb25c2f71845bd72df4ed2632bf7435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fac260aa7239cf5d753e063d0de21098eb25c2f71845bd72df4ed2632bf7435", kill_on_drop: false }`
[INFO] [stdout] 6fac260aa7239cf5d753e063d0de21098eb25c2f71845bd72df4ed2632bf7435
