[INFO] cloning repository https://github.com/hnkz/minitcp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hnkz/minitcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhnkz%2Fminitcp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhnkz%2Fminitcp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ad7c376c70c0fb81d3f283b85c6413f3eaf4003
[INFO] testing hnkz/minitcp against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhnkz%2Fminitcp" "/workspace/builds/worker-16/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-16/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hnkz/minitcp on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hnkz/minitcp
[INFO] finished tweaking git repo https://github.com/hnkz/minitcp
[INFO] tweaked toml for git repo https://github.com/hnkz/minitcp written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] crate git repo https://github.com/hnkz/minitcp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 285cc0f44b0470085ba8bf8955bfda7441e3037bfa33230e986732965a08ab83
[INFO] running `Command { std: "docker" "start" "-a" "285cc0f44b0470085ba8bf8955bfda7441e3037bfa33230e986732965a08ab83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "285cc0f44b0470085ba8bf8955bfda7441e3037bfa33230e986732965a08ab83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "285cc0f44b0470085ba8bf8955bfda7441e3037bfa33230e986732965a08ab83", kill_on_drop: false }`
[INFO] [stdout] 285cc0f44b0470085ba8bf8955bfda7441e3037bfa33230e986732965a08ab83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70e524e5b84e61e99465e2ff26b18ba4efce400ff425110e05204626280dbd14
[INFO] running `Command { std: "docker" "start" "-a" "70e524e5b84e61e99465e2ff26b18ba4efce400ff425110e05204626280dbd14", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling microps_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::convert::TryFrom`
[INFO] [stdout]  --> src/protocol.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ioctl`
[INFO] [stdout]  --> src/raw.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     ioctl,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::raw::SocDevice`
[INFO] [stdout]  --> src/ethernet.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::raw::SocDevice;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::ethernet::MacAddr`
[INFO] [stdout]  --> src/ip.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::ethernet::MacAddr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::ethernet::MacAddr`
[INFO] [stdout]  --> src/udp.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::ethernet::MacAddr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::ip::IpAddr`
[INFO] [stdout]  --> src/udp.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::ip::IpAddr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/ip.rs:94:31
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn from_slice(buf: &[u8], size:usize) -> Result<Self, String> {
[INFO] [stdout]    |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]    --> src/ip.rs:215:31
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn from_slice(buf: &[u8], size: usize) -> Result<Ip, String> {
[INFO] [stdout]     |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/arp.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             op => {
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum_end`
[INFO] [stdout]   --> src/udp.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let sum_end = sum_start + 2;
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sum_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ip.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let mut vhl: u8 = buf[vhl_start];
[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/ip.rs:133:13
[INFO] [stdout]     |
[INFO] [stdout] 133 |         let mut tos: u8 = buf[tos_start];
[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/ip.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |         let mut len: u16 = ((buf[len_start] as i16) << 8) as u16 + (buf[len_start+1] as u16);
[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/ip.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |         let mut id: u16 = ((buf[id_start] as i16) << 8) as u16 + (buf[id_start+1] as u16);
[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/ip.rs:144:13
[INFO] [stdout]     |
[INFO] [stdout] 144 |         let mut offset: u16 = ((buf[offset_start] as i16) << 8) as u16 + (buf[offset_start+1] as u16);
[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/ip.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout] 148 |         let mut ttl: u8 = buf[ttl_start];
[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/ip.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 152 |         let mut protocol: IpProtocolType = match IpProtocolType::convert_from_u8(buf[protocol_start]) {
[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/ip.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let mut sum: u16 = ((buf[sum_start] as i16) << 8) as u16 + (buf[sum_end] as u16);
[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/arp.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut hrd: u16 = ((buf[hrd_start] as i16) << 8) as u16 + (buf[hrd_start+1] as u16);
[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/arp.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut pro: u16 = ((buf[pro_start] as i16) << 8) as u16 + (buf[pro_start+1] as u16);
[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/arp.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let mut hln: u8 = buf[hln_start];
[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/arp.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut pln: u8 = buf[pln_start];
[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/udp.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let mut sport: u16 = ((buf[sport_start] as i16) << 8) as u16 + (buf[sport_start+1] as u16);
[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/udp.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut dport: u16 = ((buf[dport_start] as i16) << 8) as u16 + (buf[dport_start+1] as u16);
[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/udp.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut len: u16 = ((buf[len_start] as i16) << 8) as u16 + (buf[len_start+1] as u16);
[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/udp.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut sum: u16 = ((buf[sum_start] as i16) << 8) as u16 + (buf[sum_start+1] as u16);
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/raw.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `SocDevice` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/raw.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `addr`
[INFO] [stdout]   --> src/raw.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     addr: MacAddr,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `SocDevice` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/raw.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `TRL_SIZE`
[INFO] [stdout]   --> src/ethernet.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const TRL_SIZE: usize = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FRAME_SIZE_MIN`
[INFO] [stdout]   --> src/ethernet.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const FRAME_SIZE_MIN: usize = 64;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PAYLOAD_SIZE_MIN`
[INFO] [stdout]   --> src/ethernet.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const PAYLOAD_SIZE_MIN: usize = 46;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PAYLOAD_SIZE_MAX`
[INFO] [stdout]   --> src/ethernet.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | const PAYLOAD_SIZE_MAX: usize = 1500;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `VERSION_IPV4`
[INFO] [stdout]   --> src/ip.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const VERSION_IPV4: usize = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HDR_SIZE_MIN`
[INFO] [stdout]   --> src/ip.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const HDR_SIZE_MIN: usize = 20;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DATA_SIZE_MAX`
[INFO] [stdout]   --> src/ip.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const DATA_SIZE_MAX: usize = 65535;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `options`
[INFO] [stdout]   --> src/ip.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     options: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `IpHdr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/ip.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 | #[derive(Debug, Clone, Copy)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_valid_check_sum`
[INFO] [stdout]   --> src/ip.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn is_valid_check_sum(&self, buf: &[u8]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HRD_ETHERNET`
[INFO] [stdout]  --> src/arp.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | const HRD_ETHERNET: u16 = 0x0001;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 38 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EtherHdr`, `EtherType`
[INFO] [stdout]  --> src/main.rs:5:47
[INFO] [stdout]   |
[INFO] [stdout] 5 | use microps_rust::ethernet::{ EthernetDriver, EtherType, EtherHdr };
[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]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `microps_rust::protocol::Header`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use microps_rust::protocol::Header;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/main.rs:65:21
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 Err(err) => {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/main.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dev`
[INFO] [stdout]    --> src/main.rs:252:13
[INFO] [stdout]     |
[INFO] [stdout] 252 |     let mut dev = match SocDevice::open(&*args[1]) {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_dev`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ether_driver`
[INFO] [stdout]    --> src/main.rs:260:13
[INFO] [stdout]     |
[INFO] [stdout] 260 |     let mut ether_driver = EthernetDriver::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ether_driver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut ip_driver = IpDriver::new();
[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/main.rs:252:9
[INFO] [stdout]     |
[INFO] [stdout] 252 |     let mut dev = match SocDevice::open(&*args[1]) {
[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/main.rs:260:9
[INFO] [stdout]     |
[INFO] [stdout] 260 |     let mut ether_driver = EthernetDriver::new();
[INFO] [stdout]     |         ----^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `arp`
[INFO] [stdout]    --> src/main.rs:170:4
[INFO] [stdout]     |
[INFO] [stdout] 170 | fn arp(args: Vec<String>) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ethernet`
[INFO] [stdout]    --> src/main.rs:247:4
[INFO] [stdout]     |
[INFO] [stdout] 247 | fn ethernet(args: Vec<String>) {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rawsock`
[INFO] [stdout]    --> src/main.rs:284:4
[INFO] [stdout]     |
[INFO] [stdout] 284 | fn rawsock(args: Vec<String>) {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.93s
[INFO] running `Command { std: "docker" "inspect" "70e524e5b84e61e99465e2ff26b18ba4efce400ff425110e05204626280dbd14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70e524e5b84e61e99465e2ff26b18ba4efce400ff425110e05204626280dbd14", kill_on_drop: false }`
[INFO] [stdout] 70e524e5b84e61e99465e2ff26b18ba4efce400ff425110e05204626280dbd14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5dfbf209a21fc22ebfe5a77e0e3bd6c5cc058c25ea9f207e526914059ed72bd
[INFO] running `Command { std: "docker" "start" "-a" "d5dfbf209a21fc22ebfe5a77e0e3bd6c5cc058c25ea9f207e526914059ed72bd", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::convert::TryFrom`
[INFO] [stdout]  --> src/protocol.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ioctl`
[INFO] [stdout]  --> src/raw.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     ioctl,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::raw::SocDevice`
[INFO] [stdout]  --> src/ethernet.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::raw::SocDevice;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::ethernet::MacAddr`
[INFO] [stdout]  --> src/ip.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::ethernet::MacAddr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::ethernet::MacAddr`
[INFO] [stdout]  --> src/udp.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::ethernet::MacAddr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::ip::IpAddr`
[INFO] [stdout]  --> src/udp.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::ip::IpAddr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling microps_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/ip.rs:94:31
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn from_slice(buf: &[u8], size:usize) -> Result<Self, String> {
[INFO] [stdout]    |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]    --> src/ip.rs:215:31
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn from_slice(buf: &[u8], size: usize) -> Result<Ip, String> {
[INFO] [stdout]     |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/arp.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             op => {
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum_end`
[INFO] [stdout]   --> src/udp.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let sum_end = sum_start + 2;
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sum_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ip.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let mut vhl: u8 = buf[vhl_start];
[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/ip.rs:133:13
[INFO] [stdout]     |
[INFO] [stdout] 133 |         let mut tos: u8 = buf[tos_start];
[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/ip.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |         let mut len: u16 = ((buf[len_start] as i16) << 8) as u16 + (buf[len_start+1] as u16);
[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/ip.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |         let mut id: u16 = ((buf[id_start] as i16) << 8) as u16 + (buf[id_start+1] as u16);
[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/ip.rs:144:13
[INFO] [stdout]     |
[INFO] [stdout] 144 |         let mut offset: u16 = ((buf[offset_start] as i16) << 8) as u16 + (buf[offset_start+1] as u16);
[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/ip.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout] 148 |         let mut ttl: u8 = buf[ttl_start];
[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/ip.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 152 |         let mut protocol: IpProtocolType = match IpProtocolType::convert_from_u8(buf[protocol_start]) {
[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/ip.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let mut sum: u16 = ((buf[sum_start] as i16) << 8) as u16 + (buf[sum_end] as u16);
[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/arp.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut hrd: u16 = ((buf[hrd_start] as i16) << 8) as u16 + (buf[hrd_start+1] as u16);
[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/arp.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut pro: u16 = ((buf[pro_start] as i16) << 8) as u16 + (buf[pro_start+1] as u16);
[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/arp.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let mut hln: u8 = buf[hln_start];
[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/arp.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut pln: u8 = buf[pln_start];
[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/udp.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let mut sport: u16 = ((buf[sport_start] as i16) << 8) as u16 + (buf[sport_start+1] as u16);
[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/udp.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut dport: u16 = ((buf[dport_start] as i16) << 8) as u16 + (buf[dport_start+1] as u16);
[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/udp.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut len: u16 = ((buf[len_start] as i16) << 8) as u16 + (buf[len_start+1] as u16);
[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/udp.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut sum: u16 = ((buf[sum_start] as i16) << 8) as u16 + (buf[sum_start+1] as u16);
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/raw.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `SocDevice` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/raw.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `addr`
[INFO] [stdout]   --> src/raw.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     addr: MacAddr,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `SocDevice` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/raw.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `TRL_SIZE`
[INFO] [stdout]   --> src/ethernet.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const TRL_SIZE: usize = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FRAME_SIZE_MIN`
[INFO] [stdout]   --> src/ethernet.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const FRAME_SIZE_MIN: usize = 64;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PAYLOAD_SIZE_MIN`
[INFO] [stdout]   --> src/ethernet.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const PAYLOAD_SIZE_MIN: usize = 46;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PAYLOAD_SIZE_MAX`
[INFO] [stdout]   --> src/ethernet.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | const PAYLOAD_SIZE_MAX: usize = 1500;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `VERSION_IPV4`
[INFO] [stdout]   --> src/ip.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const VERSION_IPV4: usize = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HDR_SIZE_MIN`
[INFO] [stdout]   --> src/ip.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const HDR_SIZE_MIN: usize = 20;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DATA_SIZE_MAX`
[INFO] [stdout]   --> src/ip.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const DATA_SIZE_MAX: usize = 65535;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `options`
[INFO] [stdout]   --> src/ip.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     options: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `IpHdr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/ip.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 | #[derive(Debug, Clone, Copy)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_valid_check_sum`
[INFO] [stdout]   --> src/ip.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn is_valid_check_sum(&self, buf: &[u8]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HRD_ETHERNET`
[INFO] [stdout]  --> src/arp.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | const HRD_ETHERNET: u16 = 0x0001;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 38 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EtherHdr`, `EtherType`
[INFO] [stdout]  --> src/main.rs:5:47
[INFO] [stdout]   |
[INFO] [stdout] 5 | use microps_rust::ethernet::{ EthernetDriver, EtherType, EtherHdr };
[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]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `microps_rust::protocol::Header`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use microps_rust::protocol::Header;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/main.rs:65:21
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 Err(err) => {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/main.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dev`
[INFO] [stdout]    --> src/main.rs:252:13
[INFO] [stdout]     |
[INFO] [stdout] 252 |     let mut dev = match SocDevice::open(&*args[1]) {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_dev`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ether_driver`
[INFO] [stdout]    --> src/main.rs:260:13
[INFO] [stdout]     |
[INFO] [stdout] 260 |     let mut ether_driver = EthernetDriver::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ether_driver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut ip_driver = IpDriver::new();
[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/main.rs:252:9
[INFO] [stdout]     |
[INFO] [stdout] 252 |     let mut dev = match SocDevice::open(&*args[1]) {
[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/main.rs:260:9
[INFO] [stdout]     |
[INFO] [stdout] 260 |     let mut ether_driver = EthernetDriver::new();
[INFO] [stdout]     |         ----^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `arp`
[INFO] [stdout]    --> src/main.rs:170:4
[INFO] [stdout]     |
[INFO] [stdout] 170 | fn arp(args: Vec<String>) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ethernet`
[INFO] [stdout]    --> src/main.rs:247:4
[INFO] [stdout]     |
[INFO] [stdout] 247 | fn ethernet(args: Vec<String>) {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rawsock`
[INFO] [stdout]    --> src/main.rs:284:4
[INFO] [stdout]     |
[INFO] [stdout] 284 | fn rawsock(args: Vec<String>) {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryFrom`
[INFO] [stdout]  --> src/protocol.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ioctl`
[INFO] [stdout]  --> src/raw.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     ioctl,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::raw::SocDevice`
[INFO] [stdout]  --> src/ethernet.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::raw::SocDevice;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::ethernet::MacAddr`
[INFO] [stdout]  --> src/ip.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::ethernet::MacAddr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::ethernet::MacAddr`
[INFO] [stdout]  --> src/udp.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::ethernet::MacAddr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::ip::IpAddr`
[INFO] [stdout]  --> src/udp.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::ip::IpAddr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/ip.rs:94:31
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn from_slice(buf: &[u8], size:usize) -> Result<Self, String> {
[INFO] [stdout]    |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]    --> src/ip.rs:215:31
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn from_slice(buf: &[u8], size: usize) -> Result<Ip, String> {
[INFO] [stdout]     |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/arp.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             op => {
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum_end`
[INFO] [stdout]   --> src/udp.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let sum_end = sum_start + 2;
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sum_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ip.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let mut vhl: u8 = buf[vhl_start];
[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/ip.rs:133:13
[INFO] [stdout]     |
[INFO] [stdout] 133 |         let mut tos: u8 = buf[tos_start];
[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/ip.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |         let mut len: u16 = ((buf[len_start] as i16) << 8) as u16 + (buf[len_start+1] as u16);
[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/ip.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |         let mut id: u16 = ((buf[id_start] as i16) << 8) as u16 + (buf[id_start+1] as u16);
[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/ip.rs:144:13
[INFO] [stdout]     |
[INFO] [stdout] 144 |         let mut offset: u16 = ((buf[offset_start] as i16) << 8) as u16 + (buf[offset_start+1] as u16);
[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/ip.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout] 148 |         let mut ttl: u8 = buf[ttl_start];
[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/ip.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 152 |         let mut protocol: IpProtocolType = match IpProtocolType::convert_from_u8(buf[protocol_start]) {
[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/ip.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let mut sum: u16 = ((buf[sum_start] as i16) << 8) as u16 + (buf[sum_end] as u16);
[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/arp.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut hrd: u16 = ((buf[hrd_start] as i16) << 8) as u16 + (buf[hrd_start+1] as u16);
[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/arp.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut pro: u16 = ((buf[pro_start] as i16) << 8) as u16 + (buf[pro_start+1] as u16);
[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/arp.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let mut hln: u8 = buf[hln_start];
[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/arp.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut pln: u8 = buf[pln_start];
[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/udp.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let mut sport: u16 = ((buf[sport_start] as i16) << 8) as u16 + (buf[sport_start+1] as u16);
[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/udp.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut dport: u16 = ((buf[dport_start] as i16) << 8) as u16 + (buf[dport_start+1] as u16);
[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/udp.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut len: u16 = ((buf[len_start] as i16) << 8) as u16 + (buf[len_start+1] as u16);
[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/udp.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut sum: u16 = ((buf[sum_start] as i16) << 8) as u16 + (buf[sum_start+1] as u16);
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/raw.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `SocDevice` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/raw.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `addr`
[INFO] [stdout]   --> src/raw.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     addr: MacAddr,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `SocDevice` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/raw.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `TRL_SIZE`
[INFO] [stdout]   --> src/ethernet.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const TRL_SIZE: usize = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FRAME_SIZE_MIN`
[INFO] [stdout]   --> src/ethernet.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const FRAME_SIZE_MIN: usize = 64;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PAYLOAD_SIZE_MIN`
[INFO] [stdout]   --> src/ethernet.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const PAYLOAD_SIZE_MIN: usize = 46;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PAYLOAD_SIZE_MAX`
[INFO] [stdout]   --> src/ethernet.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | const PAYLOAD_SIZE_MAX: usize = 1500;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `VERSION_IPV4`
[INFO] [stdout]   --> src/ip.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const VERSION_IPV4: usize = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HDR_SIZE_MIN`
[INFO] [stdout]   --> src/ip.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const HDR_SIZE_MIN: usize = 20;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DATA_SIZE_MAX`
[INFO] [stdout]   --> src/ip.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const DATA_SIZE_MAX: usize = 65535;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `options`
[INFO] [stdout]   --> src/ip.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     options: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `IpHdr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/ip.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 | #[derive(Debug, Clone, Copy)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_valid_check_sum`
[INFO] [stdout]   --> src/ip.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn is_valid_check_sum(&self, buf: &[u8]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HRD_ETHERNET`
[INFO] [stdout]  --> src/arp.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | const HRD_ETHERNET: u16 = 0x0001;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 38 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.39s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/microps_rust-1c09d8b1d487074f)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/microps_rust-f7e4171c362a7183)
[INFO] running `Command { std: "docker" "inspect" "d5dfbf209a21fc22ebfe5a77e0e3bd6c5cc058c25ea9f207e526914059ed72bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5dfbf209a21fc22ebfe5a77e0e3bd6c5cc058c25ea9f207e526914059ed72bd", kill_on_drop: false }`
[INFO] [stdout] d5dfbf209a21fc22ebfe5a77e0e3bd6c5cc058c25ea9f207e526914059ed72bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 012c0ad0c5b47d31931789483f5406ebf8480201a450a3d90b102fdd76ab5893
[INFO] running `Command { std: "docker" "start" "-a" "012c0ad0c5b47d31931789483f5406ebf8480201a450a3d90b102fdd76ab5893", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::convert::TryFrom`
[INFO] [stderr]  --> src/protocol.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::convert::TryFrom;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ioctl`
[INFO] [stderr]  --> src/raw.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     ioctl,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::raw::SocDevice`
[INFO] [stderr]  --> src/ethernet.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use super::raw::SocDevice;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::ethernet::MacAddr`
[INFO] [stderr]  --> src/ip.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use super::ethernet::MacAddr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::ethernet::MacAddr`
[INFO] [stderr]  --> src/udp.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use super::ethernet::MacAddr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::ip::IpAddr`
[INFO] [stderr]  --> src/udp.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use super::ip::IpAddr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]   --> src/ip.rs:94:31
[INFO] [stderr]    |
[INFO] [stderr] 94 |     fn from_slice(buf: &[u8], size:usize) -> Result<Self, String> {
[INFO] [stderr]    |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/ip.rs:215:31
[INFO] [stderr]     |
[INFO] [stderr] 215 |     fn from_slice(buf: &[u8], size: usize) -> Result<Ip, String> {
[INFO] [stderr]     |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]   --> src/arp.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 83 |             op => {
[INFO] [stderr]    |             ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sum_end`
[INFO] [stderr]   --> src/udp.rs:66:13
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let sum_end = sum_start + 2;
[INFO] [stderr]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sum_end`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ip.rs:129:13
[INFO] [stderr]     |
[INFO] [stderr] 129 |         let mut vhl: u8 = buf[vhl_start];
[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/ip.rs:133:13
[INFO] [stderr]     |
[INFO] [stderr] 133 |         let mut tos: u8 = buf[tos_start];
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ip.rs:137:13
[INFO] [stderr]     |
[INFO] [stderr] 137 |         let mut len: u16 = ((buf[len_start] as i16) << 8) as u16 + (buf[len_start+1] as u16);
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ip.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |         let mut id: u16 = ((buf[id_start] as i16) << 8) as u16 + (buf[id_start+1] as u16);
[INFO] [stderr]     |             ----^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ip.rs:144:13
[INFO] [stderr]     |
[INFO] [stderr] 144 |         let mut offset: u16 = ((buf[offset_start] as i16) << 8) as u16 + (buf[offset_start+1] as u16);
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ip.rs:148:13
[INFO] [stderr]     |
[INFO] [stderr] 148 |         let mut ttl: u8 = buf[ttl_start];
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ip.rs:152:13
[INFO] [stderr]     |
[INFO] [stderr] 152 |         let mut protocol: IpProtocolType = match IpProtocolType::convert_from_u8(buf[protocol_start]) {
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ip.rs:159:13
[INFO] [stderr]     |
[INFO] [stderr] 159 |         let mut sum: u16 = ((buf[sum_start] as i16) << 8) as u16 + (buf[sum_end] as u16);
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/arp.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 |         let mut hrd: u16 = ((buf[hrd_start] as i16) << 8) as u16 + (buf[hrd_start+1] as u16);
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/arp.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let mut pro: u16 = ((buf[pro_start] as i16) << 8) as u16 + (buf[pro_start+1] as u16);
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/arp.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |         let mut hln: u8 = buf[hln_start];
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/arp.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let mut pln: u8 = buf[pln_start];
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/udp.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let mut sport: u16 = ((buf[sport_start] as i16) << 8) as u16 + (buf[sport_start+1] as u16);
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/udp.rs:60:13
[INFO] [stderr]    |
[INFO] [stderr] 60 |         let mut dport: u16 = ((buf[dport_start] as i16) << 8) as u16 + (buf[dport_start+1] as u16);
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/udp.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 |         let mut len: u16 = ((buf[len_start] as i16) << 8) as u16 + (buf[len_start+1] as u16);
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/udp.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let mut sum: u16 = ((buf[sum_start] as i16) << 8) as u16 + (buf[sum_start+1] as u16);
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `name`
[INFO] [stderr]   --> src/raw.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     name: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `SocDevice` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/raw.rs:28:10
[INFO] [stderr]    |
[INFO] [stderr] 28 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `addr`
[INFO] [stderr]   --> src/raw.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     addr: MacAddr,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `SocDevice` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/raw.rs:28:10
[INFO] [stderr]    |
[INFO] [stderr] 28 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `TRL_SIZE`
[INFO] [stderr]   --> src/ethernet.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | const TRL_SIZE: usize = 4;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `FRAME_SIZE_MIN`
[INFO] [stderr]   --> src/ethernet.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | const FRAME_SIZE_MIN: usize = 64;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `PAYLOAD_SIZE_MIN`
[INFO] [stderr]   --> src/ethernet.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | const PAYLOAD_SIZE_MIN: usize = 46;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `PAYLOAD_SIZE_MAX`
[INFO] [stderr]   --> src/ethernet.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | const PAYLOAD_SIZE_MAX: usize = 1500;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `VERSION_IPV4`
[INFO] [stderr]   --> src/ip.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | const VERSION_IPV4: usize = 4;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `HDR_SIZE_MIN`
[INFO] [stderr]   --> src/ip.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | const HDR_SIZE_MIN: usize = 20;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `DATA_SIZE_MAX`
[INFO] [stderr]   --> src/ip.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | const DATA_SIZE_MAX: usize = 65535;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `options`
[INFO] [stderr]   --> src/ip.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     options: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `IpHdr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/ip.rs:37:10
[INFO] [stderr]    |
[INFO] [stderr] 37 | #[derive(Debug, Clone, Copy)]
[INFO] [stderr]    |          ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_valid_check_sum`
[INFO] [stderr]   --> src/ip.rs:74:8
[INFO] [stderr]    |
[INFO] [stderr] 74 |     fn is_valid_check_sum(&self, buf: &[u8]) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `HRD_ETHERNET`
[INFO] [stderr]  --> src/arp.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | const HRD_ETHERNET: u16 = 0x0001;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `microps_rust` (lib) generated 38 warnings
[INFO] [stderr] warning: `microps_rust` (lib test) generated 38 warnings (38 duplicates)
[INFO] [stderr] warning: unused imports: `EtherHdr`, `EtherType`
[INFO] [stderr]  --> src/main.rs:5:47
[INFO] [stderr]   |
[INFO] [stderr] 5 | use microps_rust::ethernet::{ EthernetDriver, EtherType, EtherHdr };
[INFO] [stderr]   |                                               ^^^^^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `microps_rust::protocol::Header`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use microps_rust::protocol::Header;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/main.rs:65:21
[INFO] [stderr]    |
[INFO] [stderr] 65 |                 Err(err) => {
[INFO] [stderr]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/main.rs:209:17
[INFO] [stderr]     |
[INFO] [stderr] 209 |             Err(err) => {
[INFO] [stderr]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dev`
[INFO] [stderr]    --> src/main.rs:252:13
[INFO] [stderr]     |
[INFO] [stderr] 252 |     let mut dev = match SocDevice::open(&*args[1]) {
[INFO] [stderr]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_dev`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ether_driver`
[INFO] [stderr]    --> src/main.rs:260:13
[INFO] [stderr]     |
[INFO] [stderr] 260 |     let mut ether_driver = EthernetDriver::new();
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ether_driver`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let mut ip_driver = IpDriver::new();
[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/main.rs:252:9
[INFO] [stderr]     |
[INFO] [stderr] 252 |     let mut dev = match SocDevice::open(&*args[1]) {
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:260:9
[INFO] [stderr]     |
[INFO] [stderr] 260 |     let mut ether_driver = EthernetDriver::new();
[INFO] [stderr]     |         ----^^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `arp`
[INFO] [stderr]    --> src/main.rs:170:4
[INFO] [stderr]     |
[INFO] [stderr] 170 | fn arp(args: Vec<String>) {
[INFO] [stderr]     |    ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ethernet`
[INFO] [stderr]    --> src/main.rs:247:4
[INFO] [stderr]     |
[INFO] [stderr] 247 | fn ethernet(args: Vec<String>) {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rawsock`
[INFO] [stderr]    --> src/main.rs:284:4
[INFO] [stderr]     |
[INFO] [stderr] 284 | fn rawsock(args: Vec<String>) {
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `microps_rust` (bin "microps_rust" test) generated 13 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/microps_rust-1c09d8b1d487074f)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/microps_rust-f7e4171c362a7183)
[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] [stderr]    Doc-tests microps_rust
[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" "012c0ad0c5b47d31931789483f5406ebf8480201a450a3d90b102fdd76ab5893", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "012c0ad0c5b47d31931789483f5406ebf8480201a450a3d90b102fdd76ab5893", kill_on_drop: false }`
[INFO] [stdout] 012c0ad0c5b47d31931789483f5406ebf8480201a450a3d90b102fdd76ab5893