[INFO] updating cached repository https://github.com/CrabBucket/EchoCLI
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 485047ae019605f04c00eb67e69718d283a24754
[INFO] testing CrabBucket/EchoCLI against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCrabBucket%2FEchoCLI" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CrabBucket/EchoCLI on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CrabBucket/EchoCLI
[INFO] finished tweaking git repo https://github.com/CrabBucket/EchoCLI
[INFO] tweaked toml for git repo https://github.com/CrabBucket/EchoCLI written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/CrabBucket/EchoCLI already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ce8b6bbd5be4202bb88dc654ee2ccdc1892b86b8563c8572d48b15da8040a97
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6ce8b6bbd5be4202bb88dc654ee2ccdc1892b86b8563c8572d48b15da8040a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ce8b6bbd5be4202bb88dc654ee2ccdc1892b86b8563c8572d48b15da8040a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ce8b6bbd5be4202bb88dc654ee2ccdc1892b86b8563c8572d48b15da8040a97", kill_on_drop: false }`
[INFO] [stdout] 6ce8b6bbd5be4202bb88dc654ee2ccdc1892b86b8563c8572d48b15da8040a97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a26800b775be8abbd48d5d44113753efd078baeb1c00c34a7b8a9ca64f3a483e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a26800b775be8abbd48d5d44113753efd078baeb1c00c34a7b8a9ca64f3a483e", kill_on_drop: false }`
[INFO] [stderr]    Compiling ux v0.1.3
[INFO] [stderr]    Compiling echo_cli v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Ipv6Addr`
[INFO] [stdout]  --> src/network.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::net::{Ipv4Addr,Ipv6Addr};
[INFO] [stdout]   |                         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ui::*`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ui::*;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `vec`
[INFO] [stdout]  --> src/main.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{vec};
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |     let mut iphead = IPv4Header::new(Ipv4Addr::new(127,0,0,1),Ipv4Addr::new(127,0,0,1));
[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/network.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 153 |     let mut iphead2 = IPv4Header::new(Ipv4Addr::new(127,0,0,1),Ipv4Addr::new(127,0,0,1));
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Conclusion`
[INFO] [stdout]  --> src/ui.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Conclusion {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `TTL`
[INFO] [stdout]   --> src/ui.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     TTL,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Interval`
[INFO] [stdout]   --> src/ui.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Interval,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Count`
[INFO] [stdout]   --> src/ui.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Count,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/ui.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn new(strarg: String) -> Flag{
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `flag_type_from_string`
[INFO] [stdout]   --> src/ui.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn flag_type_from_string(str_flag: String) -> Result<FlagType,String>{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_flags`
[INFO] [stdout]   --> src/ui.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn get_flags() -> Vec::<Flag>{
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `arg_count`
[INFO] [stdout]   --> src/ui.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn arg_count() -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_correct_args`
[INFO] [stdout]   --> src/ui.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn check_correct_args() -> Conclusion {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ICMPHeader`
[INFO] [stdout]    --> src/network.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 | struct ICMPHeader {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.41s
[INFO] running `Command { std: "docker" "inspect" "a26800b775be8abbd48d5d44113753efd078baeb1c00c34a7b8a9ca64f3a483e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a26800b775be8abbd48d5d44113753efd078baeb1c00c34a7b8a9ca64f3a483e", kill_on_drop: false }`
[INFO] [stdout] a26800b775be8abbd48d5d44113753efd078baeb1c00c34a7b8a9ca64f3a483e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ad8cd0147132ff95372f5785226df064ea2d078a37e49beca3d53f8fc608daf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0ad8cd0147132ff95372f5785226df064ea2d078a37e49beca3d53f8fc608daf", kill_on_drop: false }`
[INFO] [stderr]    Compiling echo_cli v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Ipv6Addr`
[INFO] [stdout]  --> src/network.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::net::{Ipv4Addr,Ipv6Addr};
[INFO] [stdout]   |                         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ui::*`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ui::*;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `vec`
[INFO] [stdout]  --> src/main.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{vec};
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |     let mut iphead = IPv4Header::new(Ipv4Addr::new(127,0,0,1),Ipv4Addr::new(127,0,0,1));
[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/network.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 153 |     let mut iphead2 = IPv4Header::new(Ipv4Addr::new(127,0,0,1),Ipv4Addr::new(127,0,0,1));
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Conclusion`
[INFO] [stdout]  --> src/ui.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Conclusion {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `TTL`
[INFO] [stdout]   --> src/ui.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     TTL,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Interval`
[INFO] [stdout]   --> src/ui.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Interval,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Count`
[INFO] [stdout]   --> src/ui.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Count,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/ui.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn new(strarg: String) -> Flag{
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `flag_type_from_string`
[INFO] [stdout]   --> src/ui.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn flag_type_from_string(str_flag: String) -> Result<FlagType,String>{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_flags`
[INFO] [stdout]   --> src/ui.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn get_flags() -> Vec::<Flag>{
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `arg_count`
[INFO] [stdout]   --> src/ui.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn arg_count() -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_correct_args`
[INFO] [stdout]   --> src/ui.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn check_correct_args() -> Conclusion {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ICMPHeader`
[INFO] [stdout]    --> src/network.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 | struct ICMPHeader {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "0ad8cd0147132ff95372f5785226df064ea2d078a37e49beca3d53f8fc608daf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ad8cd0147132ff95372f5785226df064ea2d078a37e49beca3d53f8fc608daf", kill_on_drop: false }`
[INFO] [stdout] 0ad8cd0147132ff95372f5785226df064ea2d078a37e49beca3d53f8fc608daf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 18a083bef048453da0ae4de69ef53495b6542f1cc8ed3e69ce17044b1783a04f
[INFO] running `Command { std: "docker" "start" "-a" "18a083bef048453da0ae4de69ef53495b6542f1cc8ed3e69ce17044b1783a04f", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Ipv6Addr`
[INFO] [stderr]  --> src/network.rs:7:25
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::net::{Ipv4Addr,Ipv6Addr};
[INFO] [stderr]   |                         ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ui::*`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use ui::*;
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `vec`
[INFO] [stderr]  --> src/main.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::{vec};
[INFO] [stderr]   |           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/network.rs:152:9
[INFO] [stderr]     |
[INFO] [stderr] 152 |     let mut iphead = IPv4Header::new(Ipv4Addr::new(127,0,0,1),Ipv4Addr::new(127,0,0,1));
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/network.rs:153:9
[INFO] [stderr]     |
[INFO] [stderr] 153 |     let mut iphead2 = IPv4Header::new(Ipv4Addr::new(127,0,0,1),Ipv4Addr::new(127,0,0,1));
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Conclusion`
[INFO] [stderr]  --> src/ui.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub enum Conclusion {
[INFO] [stderr]   |          ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `TTL`
[INFO] [stderr]   --> src/ui.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     TTL,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Interval`
[INFO] [stderr]   --> src/ui.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Interval,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Count`
[INFO] [stderr]   --> src/ui.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Count,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/ui.rs:22:12
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn new(strarg: String) -> Flag{
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `flag_type_from_string`
[INFO] [stderr]   --> src/ui.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn flag_type_from_string(str_flag: String) -> Result<FlagType,String>{
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_flags`
[INFO] [stderr]   --> src/ui.rs:52:8
[INFO] [stderr]    |
[INFO] [stderr] 52 | pub fn get_flags() -> Vec::<Flag>{
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `arg_count`
[INFO] [stderr]   --> src/ui.rs:62:8
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn arg_count() -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `check_correct_args`
[INFO] [stderr]   --> src/ui.rs:70:8
[INFO] [stderr]    |
[INFO] [stderr] 70 | pub fn check_correct_args() -> Conclusion {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ICMPHeader`
[INFO] [stderr]    --> src/network.rs:143:8
[INFO] [stderr]     |
[INFO] [stderr] 143 | struct ICMPHeader {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/echo_cli-c917ae9bb90c6a7f
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "18a083bef048453da0ae4de69ef53495b6542f1cc8ed3e69ce17044b1783a04f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18a083bef048453da0ae4de69ef53495b6542f1cc8ed3e69ce17044b1783a04f", kill_on_drop: false }`
[INFO] [stdout] 18a083bef048453da0ae4de69ef53495b6542f1cc8ed3e69ce17044b1783a04f