[INFO] cloning repository https://github.com/tawashichan/toy-tcp-sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tawashichan/toy-tcp-sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftawashichan%2Ftoy-tcp-sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftawashichan%2Ftoy-tcp-sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c1366fd77118d865e6bf5d8849f7320edf3198f8
[INFO] testing tawashichan/toy-tcp-sample against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftawashichan%2Ftoy-tcp-sample" "/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/tawashichan/toy-tcp-sample on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tawashichan/toy-tcp-sample
[INFO] finished tweaking git repo https://github.com/tawashichan/toy-tcp-sample
[INFO] tweaked toml for git repo https://github.com/tawashichan/toy-tcp-sample written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tawashichan/toy-tcp-sample 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 87db19bfacffe71687c3be6ba4fec70d7222e2f1d0b1071f19883d5ec731e372
[INFO] running `Command { std: "docker" "start" "-a" "87db19bfacffe71687c3be6ba4fec70d7222e2f1d0b1071f19883d5ec731e372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87db19bfacffe71687c3be6ba4fec70d7222e2f1d0b1071f19883d5ec731e372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87db19bfacffe71687c3be6ba4fec70d7222e2f1d0b1071f19883d5ec731e372", kill_on_drop: false }`
[INFO] [stdout] 87db19bfacffe71687c3be6ba4fec70d7222e2f1d0b1071f19883d5ec731e372
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e25acdb119cb97ceddcf9bf3ac7e873f351913e15a0a7ae2f0ab4ebac4a98b10
[INFO] running `Command { std: "docker" "start" "-a" "e25acdb119cb97ceddcf9bf3ac7e873f351913e15a0a7ae2f0ab4ebac4a98b10", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling pnet_base v0.27.2
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling pnet v0.27.2
[INFO] [stderr]    Compiling pnet_macros_support v0.27.2
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling pnet_sys v0.27.2
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling syntex_pos v0.42.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]    Compiling ipnetwork v0.17.0
[INFO] [stderr]    Compiling pnet_datalink v0.27.2
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling pnet_macros v0.27.2
[INFO] [stderr]    Compiling pnet_packet v0.27.2
[INFO] [stderr]    Compiling pnet_transport v0.27.2
[INFO] [stderr]    Compiling tcp-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Tcf`
[INFO] [stdout]  --> src/packet.rs:4:62
[INFO] [stdout]   |
[INFO] [stdout] 4 | use pnet::packet::{Packet, ip::IpNextHeaderProtocols::{self, Tcf}, tcp::TcpPacket, util};
[INFO] [stdout]   |                                                              ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tcp`
[INFO] [stdout]  --> src/tcp.rs:7:69
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::{packet::TCPPacket, socket::{SockID, Socket, TcpStatus}, tcp, tcpflags};
[INFO] [stdout]   |                                                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tcp`
[INFO] [stdout]  --> src/socket.rs:7:32
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::{packet::TCPPacket, tcp};
[INFO] [stdout]   |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sock_id`
[INFO] [stdout]   --> src/tcp.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |             let sock_id = socket.get_sock_id();
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sock_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Acked`, `DataArrived`, and `ConnectionClosed` are never constructed
[INFO] [stdout]    --> src/tcp.rs:216:5
[INFO] [stdout]     |
[INFO] [stdout] 214 | pub enum TCPEventKind {
[INFO] [stdout]     |          ------------ variants in this enum
[INFO] [stdout] 215 |     ConnectionCompleted,
[INFO] [stdout] 216 |     Acked,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 217 |     DataArrived,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 218 |     ConnectionClosed,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TCPEventKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Listen`, `FinWait1`, `FinWait2`, `TimeWait`, `CloseWait`, and `LastAck` are never constructed
[INFO] [stdout]   --> src/socket.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub enum TcpStatus {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 45 |     Listen,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     FinWait1,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 50 |     FinWait2,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 51 |     TimeWait,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 52 |     CloseWait,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 53 |     LastAck,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TcpStatus` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.76s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "e25acdb119cb97ceddcf9bf3ac7e873f351913e15a0a7ae2f0ab4ebac4a98b10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e25acdb119cb97ceddcf9bf3ac7e873f351913e15a0a7ae2f0ab4ebac4a98b10", kill_on_drop: false }`
[INFO] [stdout] e25acdb119cb97ceddcf9bf3ac7e873f351913e15a0a7ae2f0ab4ebac4a98b10
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc1914703da411d1c0a61ea4111c2412d18e416e7add551f795d43c059a7815b
[INFO] running `Command { std: "docker" "start" "-a" "dc1914703da411d1c0a61ea4111c2412d18e416e7add551f795d43c059a7815b", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling ctrlc v3.1.9
[INFO] [stderr]    Compiling tcp-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Tcf`
[INFO] [stdout]  --> src/packet.rs:4:62
[INFO] [stdout]   |
[INFO] [stdout] 4 | use pnet::packet::{Packet, ip::IpNextHeaderProtocols::{self, Tcf}, tcp::TcpPacket, util};
[INFO] [stdout]   |                                                              ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tcp`
[INFO] [stdout]  --> src/tcp.rs:7:69
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::{packet::TCPPacket, socket::{SockID, Socket, TcpStatus}, tcp, tcpflags};
[INFO] [stdout]   |                                                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tcp`
[INFO] [stdout]  --> src/socket.rs:7:32
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::{packet::TCPPacket, tcp};
[INFO] [stdout]   |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sock_id`
[INFO] [stdout]   --> src/tcp.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |             let sock_id = socket.get_sock_id();
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sock_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Acked`, `DataArrived`, and `ConnectionClosed` are never constructed
[INFO] [stdout]    --> src/tcp.rs:216:5
[INFO] [stdout]     |
[INFO] [stdout] 214 | pub enum TCPEventKind {
[INFO] [stdout]     |          ------------ variants in this enum
[INFO] [stdout] 215 |     ConnectionCompleted,
[INFO] [stdout] 216 |     Acked,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 217 |     DataArrived,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 218 |     ConnectionClosed,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TCPEventKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Listen`, `FinWait1`, `FinWait2`, `TimeWait`, `CloseWait`, and `LastAck` are never constructed
[INFO] [stdout]   --> src/socket.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub enum TcpStatus {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 45 |     Listen,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     FinWait1,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 50 |     FinWait2,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 51 |     TimeWait,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 52 |     CloseWait,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 53 |     LastAck,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TcpStatus` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.33s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "dc1914703da411d1c0a61ea4111c2412d18e416e7add551f795d43c059a7815b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc1914703da411d1c0a61ea4111c2412d18e416e7add551f795d43c059a7815b", kill_on_drop: false }`
[INFO] [stdout] dc1914703da411d1c0a61ea4111c2412d18e416e7add551f795d43c059a7815b
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4a82629eb231753e4bdf81d2c7603e232ca511c32f9f94a8fc5c96511478c299
[INFO] running `Command { std: "docker" "start" "-a" "4a82629eb231753e4bdf81d2c7603e232ca511c32f9f94a8fc5c96511478c299", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Tcf`
[INFO] [stderr]  --> src/packet.rs:4:62
[INFO] [stderr]   |
[INFO] [stderr] 4 | use pnet::packet::{Packet, ip::IpNextHeaderProtocols::{self, Tcf}, tcp::TcpPacket, util};
[INFO] [stderr]   |                                                              ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tcp`
[INFO] [stderr]  --> src/tcp.rs:7:69
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::{packet::TCPPacket, socket::{SockID, Socket, TcpStatus}, tcp, tcpflags};
[INFO] [stderr]   |                                                                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tcp`
[INFO] [stderr]  --> src/socket.rs:7:32
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::{packet::TCPPacket, tcp};
[INFO] [stderr]   |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sock_id`
[INFO] [stderr]   --> src/tcp.rs:86:17
[INFO] [stderr]    |
[INFO] [stderr] 86 |             let sock_id = socket.get_sock_id();
[INFO] [stderr]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sock_id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Acked`, `DataArrived`, and `ConnectionClosed` are never constructed
[INFO] [stderr]    --> src/tcp.rs:216:5
[INFO] [stderr]     |
[INFO] [stderr] 214 | pub enum TCPEventKind {
[INFO] [stderr]     |          ------------ variants in this enum
[INFO] [stderr] 215 |     ConnectionCompleted,
[INFO] [stderr] 216 |     Acked,
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr] 217 |     DataArrived,
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr] 218 |     ConnectionClosed,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `TCPEventKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Listen`, `FinWait1`, `FinWait2`, `TimeWait`, `CloseWait`, and `LastAck` are never constructed
[INFO] [stderr]   --> src/socket.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 44 | pub enum TcpStatus {
[INFO] [stderr]    |          --------- variants in this enum
[INFO] [stderr] 45 |     Listen,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 49 |     FinWait1,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 50 |     FinWait2,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 51 |     TimeWait,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 52 |     CloseWait,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 53 |     LastAck,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `TcpStatus` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `tcp-practice` (bin "tcp-practice" test) generated 6 warnings (run `cargo fix --bin "tcp-practice" --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/tcp_practice-9640780f87db8262)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4a82629eb231753e4bdf81d2c7603e232ca511c32f9f94a8fc5c96511478c299", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a82629eb231753e4bdf81d2c7603e232ca511c32f9f94a8fc5c96511478c299", kill_on_drop: false }`
[INFO] [stdout] 4a82629eb231753e4bdf81d2c7603e232ca511c32f9f94a8fc5c96511478c299
