[INFO] cloning repository https://github.com/sebglazebrook/ping-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sebglazebrook/ping-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsebglazebrook%2Fping-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsebglazebrook%2Fping-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b4208ffff37cdfcdf8671ef369f10e4d498c79b8
[INFO] testing sebglazebrook/ping-rs against 1.75.0 for beta-1.76-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsebglazebrook%2Fping-rs" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sebglazebrook/ping-rs on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sebglazebrook/ping-rs
[INFO] finished tweaking git repo https://github.com/sebglazebrook/ping-rs
[INFO] tweaked toml for git repo https://github.com/sebglazebrook/ping-rs written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sebglazebrook/ping-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pnet_base v0.20.0
[INFO] [stderr]   Downloaded pnet_datalink v0.20.0
[INFO] [stderr]   Downloaded pnet_packet v0.20.0
[INFO] [stderr]   Downloaded ipnetwork v0.12.7
[INFO] [stderr]   Downloaded pnet_macros_support v0.20.0
[INFO] [stderr]   Downloaded pnet_transport v0.20.0
[INFO] [stderr]   Downloaded pnet_sys v0.20.0
[INFO] [stderr]   Downloaded pnet v0.20.0
[INFO] [stderr]   Downloaded pnet_macros v0.20.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6caec3b3f34753b8dad3d927ddd518c73700600cf87ed31c4bb090a6a4937ef4
[INFO] running `Command { std: "docker" "start" "-a" "6caec3b3f34753b8dad3d927ddd518c73700600cf87ed31c4bb090a6a4937ef4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6caec3b3f34753b8dad3d927ddd518c73700600cf87ed31c4bb090a6a4937ef4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6caec3b3f34753b8dad3d927ddd518c73700600cf87ed31c4bb090a6a4937ef4", kill_on_drop: false }`
[INFO] [stdout] 6caec3b3f34753b8dad3d927ddd518c73700600cf87ed31c4bb090a6a4937ef4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 155fb563c71bb75432b58e24214643683fc020d624db15000e326ffde23b9f38
[INFO] running `Command { std: "docker" "start" "-a" "155fb563c71bb75432b58e24214643683fc020d624db15000e326ffde23b9f38", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling pnet_base v0.20.0
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling ipnetwork v0.12.7
[INFO] [stderr]    Compiling pnet v0.20.0
[INFO] [stderr]    Compiling byteorder v1.2.1
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling pnet_macros_support v0.20.0
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling pnet_sys v0.20.0
[INFO] [stderr]    Compiling pnet_datalink v0.20.0
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]    Compiling regex v0.2.6
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling pnet_macros v0.20.0
[INFO] [stderr]    Compiling pnet_packet v0.20.0
[INFO] [stderr]    Compiling pnet_transport v0.20.0
[INFO] [stderr]    Compiling ping-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ping/network_layer.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 |     transmitter: Box<datalink::DataLinkSender>,
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     transmitter: Box<dyn datalink::DataLinkSender>,
[INFO] [stdout]   |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ping/network_layer.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 |     receiver: Box<datalink::DataLinkReceiver>,
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 |     receiver: Box<dyn datalink::DataLinkReceiver>,
[INFO] [stdout]   |                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ping/network_layer.rs:15:14
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let (mut tx, mut rx) = match datalink::channel(&interface, datalink::Config::default()) {
[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/ping/network_layer.rs:15:22
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let (mut tx, mut rx) = match datalink::channel(&interface, datalink::Config::default()) {
[INFO] [stdout]    |                      ----^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `message_type`, `code`, `checksum`, `identifier`, and `sequence_number` are never read
[INFO] [stdout]  --> src/ping/icmp_packet.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct IcmpHeader {
[INFO] [stdout]   |        ---------- fields in this struct
[INFO] [stdout] 3 |     // first 32 bits
[INFO] [stdout] 4 |     message_type: u8, // just `type` in rfc
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 5 |     code: u8,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     checksum: u16,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 7 |     // second 32 bits
[INFO] [stdout] 8 |     identifier: u16,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 9 |     sequence_number: u16,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IcmpHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `header` and `payload` are never read
[INFO] [stdout]   --> src/ping/icmp_packet.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct IcmpPacket {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 28 |     header: IcmpHeader, // 8 bytes
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 29 |     payload: String, // optional ( can store send time in here and then calculate the trip time when it's returned )
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpPacket` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `interface` and `receiver` are never read
[INFO] [stdout]  --> src/ping/network_layer.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct NetworkLayer {
[INFO] [stdout]   |            ------------ fields in this struct
[INFO] [stdout] 6 |     interface: datalink::NetworkInterface,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 7 |     transmitter: Box<datalink::DataLinkSender>,
[INFO] [stdout] 8 |     receiver: Box<datalink::DataLinkReceiver>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal out of range for `u8`
[INFO] [stdout]   --> src/ping/ip_header.rs:31:22
[INFO] [stdout]    |
[INFO] [stdout] 31 |             version: 0x0800, // TODO correct value ??
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the literal `0x0800` (decimal `2048`) does not fit into the type `u8` and will become `0u8`
[INFO] [stdout]    = help: consider using the type `u16` instead
[INFO] [stdout]    = note: `#[warn(overflowing_literals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/ping/ip_header.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         header_checksum.write_u16::<BigEndian>(self.header_checksum);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let _ = header_checksum.write_u16::<BigEndian>(self.header_checksum);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.76s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "155fb563c71bb75432b58e24214643683fc020d624db15000e326ffde23b9f38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "155fb563c71bb75432b58e24214643683fc020d624db15000e326ffde23b9f38", kill_on_drop: false }`
[INFO] [stdout] 155fb563c71bb75432b58e24214643683fc020d624db15000e326ffde23b9f38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] beb897c694aa3be0dfa178fcec26d3b57f02f4e7cfcf238b517a618888d262f5
[INFO] running `Command { std: "docker" "start" "-a" "beb897c694aa3be0dfa178fcec26d3b57f02f4e7cfcf238b517a618888d262f5", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ping/network_layer.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 |     transmitter: Box<datalink::DataLinkSender>,
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     transmitter: Box<dyn datalink::DataLinkSender>,
[INFO] [stdout]   |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ping-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ping/network_layer.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 |     receiver: Box<datalink::DataLinkReceiver>,
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 |     receiver: Box<dyn datalink::DataLinkReceiver>,
[INFO] [stdout]   |                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ping/network_layer.rs:15:14
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let (mut tx, mut rx) = match datalink::channel(&interface, datalink::Config::default()) {
[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/ping/network_layer.rs:15:22
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let (mut tx, mut rx) = match datalink::channel(&interface, datalink::Config::default()) {
[INFO] [stdout]    |                      ----^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `message_type`, `code`, `checksum`, `identifier`, and `sequence_number` are never read
[INFO] [stdout]  --> src/ping/icmp_packet.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct IcmpHeader {
[INFO] [stdout]   |        ---------- fields in this struct
[INFO] [stdout] 3 |     // first 32 bits
[INFO] [stdout] 4 |     message_type: u8, // just `type` in rfc
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 5 |     code: u8,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     checksum: u16,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 7 |     // second 32 bits
[INFO] [stdout] 8 |     identifier: u16,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 9 |     sequence_number: u16,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IcmpHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `header` and `payload` are never read
[INFO] [stdout]   --> src/ping/icmp_packet.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct IcmpPacket {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 28 |     header: IcmpHeader, // 8 bytes
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 29 |     payload: String, // optional ( can store send time in here and then calculate the trip time when it's returned )
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpPacket` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `interface` and `receiver` are never read
[INFO] [stdout]  --> src/ping/network_layer.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct NetworkLayer {
[INFO] [stdout]   |            ------------ fields in this struct
[INFO] [stdout] 6 |     interface: datalink::NetworkInterface,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 7 |     transmitter: Box<datalink::DataLinkSender>,
[INFO] [stdout] 8 |     receiver: Box<datalink::DataLinkReceiver>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal out of range for `u8`
[INFO] [stdout]   --> src/ping/ip_header.rs:31:22
[INFO] [stdout]    |
[INFO] [stdout] 31 |             version: 0x0800, // TODO correct value ??
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the literal `0x0800` (decimal `2048`) does not fit into the type `u8` and will become `0u8`
[INFO] [stdout]    = help: consider using the type `u16` instead
[INFO] [stdout]    = note: `#[warn(overflowing_literals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/ping/ip_header.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         header_checksum.write_u16::<BigEndian>(self.header_checksum);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let _ = header_checksum.write_u16::<BigEndian>(self.header_checksum);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ping/network_layer.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 |     transmitter: Box<datalink::DataLinkSender>,
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     transmitter: Box<dyn datalink::DataLinkSender>,
[INFO] [stdout]   |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ping/network_layer.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 |     receiver: Box<datalink::DataLinkReceiver>,
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 |     receiver: Box<dyn datalink::DataLinkReceiver>,
[INFO] [stdout]   |                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ping/network_layer.rs:15:14
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let (mut tx, mut rx) = match datalink::channel(&interface, datalink::Config::default()) {
[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/ping/network_layer.rs:15:22
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let (mut tx, mut rx) = match datalink::channel(&interface, datalink::Config::default()) {
[INFO] [stdout]    |                      ----^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `message_type`, `code`, `checksum`, `identifier`, and `sequence_number` are never read
[INFO] [stdout]  --> src/ping/icmp_packet.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct IcmpHeader {
[INFO] [stdout]   |        ---------- fields in this struct
[INFO] [stdout] 3 |     // first 32 bits
[INFO] [stdout] 4 |     message_type: u8, // just `type` in rfc
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 5 |     code: u8,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     checksum: u16,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 7 |     // second 32 bits
[INFO] [stdout] 8 |     identifier: u16,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 9 |     sequence_number: u16,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IcmpHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `header` and `payload` are never read
[INFO] [stdout]   --> src/ping/icmp_packet.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct IcmpPacket {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 28 |     header: IcmpHeader, // 8 bytes
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 29 |     payload: String, // optional ( can store send time in here and then calculate the trip time when it's returned )
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpPacket` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `interface` and `receiver` are never read
[INFO] [stdout]  --> src/ping/network_layer.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct NetworkLayer {
[INFO] [stdout]   |            ------------ fields in this struct
[INFO] [stdout] 6 |     interface: datalink::NetworkInterface,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 7 |     transmitter: Box<datalink::DataLinkSender>,
[INFO] [stdout] 8 |     receiver: Box<datalink::DataLinkReceiver>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal out of range for `u8`
[INFO] [stdout]   --> src/ping/ip_header.rs:31:22
[INFO] [stdout]    |
[INFO] [stdout] 31 |             version: 0x0800, // TODO correct value ??
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the literal `0x0800` (decimal `2048`) does not fit into the type `u8` and will become `0u8`
[INFO] [stdout]    = help: consider using the type `u16` instead
[INFO] [stdout]    = note: `#[warn(overflowing_literals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/ping/ip_header.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         header_checksum.write_u16::<BigEndian>(self.header_checksum);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let _ = header_checksum.write_u16::<BigEndian>(self.header_checksum);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.56s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "beb897c694aa3be0dfa178fcec26d3b57f02f4e7cfcf238b517a618888d262f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "beb897c694aa3be0dfa178fcec26d3b57f02f4e7cfcf238b517a618888d262f5", kill_on_drop: false }`
[INFO] [stdout] beb897c694aa3be0dfa178fcec26d3b57f02f4e7cfcf238b517a618888d262f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 05573ebd1349fbd638ce2ad866daa2320afb69d16fb49c4ce61132c5f88fdc69
[INFO] running `Command { std: "docker" "start" "-a" "05573ebd1349fbd638ce2ad866daa2320afb69d16fb49c4ce61132c5f88fdc69", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/ping/network_layer.rs:7:22
[INFO] [stderr]   |
[INFO] [stderr] 7 |     transmitter: Box<datalink::DataLinkSender>,
[INFO] [stderr]   |                      ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 7 |     transmitter: Box<dyn datalink::DataLinkSender>,
[INFO] [stderr]   |                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/ping/network_layer.rs:8:19
[INFO] [stderr]   |
[INFO] [stderr] 8 |     receiver: Box<datalink::DataLinkReceiver>,
[INFO] [stderr]   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 8 |     receiver: Box<dyn datalink::DataLinkReceiver>,
[INFO] [stderr]   |                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/ping/network_layer.rs:15:14
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let (mut tx, mut rx) = match datalink::channel(&interface, datalink::Config::default()) {
[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/ping/network_layer.rs:15:22
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let (mut tx, mut rx) = match datalink::channel(&interface, datalink::Config::default()) {
[INFO] [stderr]    |                      ----^^
[INFO] [stderr]    |                      |
[INFO] [stderr]    |                      help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: fields `message_type`, `code`, `checksum`, `identifier`, and `sequence_number` are never read
[INFO] [stderr]  --> src/ping/icmp_packet.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct IcmpHeader {
[INFO] [stderr]   |        ---------- fields in this struct
[INFO] [stderr] 3 |     // first 32 bits
[INFO] [stderr] 4 |     message_type: u8, // just `type` in rfc
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 5 |     code: u8,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 6 |     checksum: u16,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 7 |     // second 32 bits
[INFO] [stderr] 8 |     identifier: u16,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 9 |     sequence_number: u16,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `IcmpHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `header` and `payload` are never read
[INFO] [stderr]   --> src/ping/icmp_packet.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub struct IcmpPacket {
[INFO] [stderr]    |            ---------- fields in this struct
[INFO] [stderr] 28 |     header: IcmpHeader, // 8 bytes
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 29 |     payload: String, // optional ( can store send time in here and then calculate the trip time when it's returned )
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `IcmpPacket` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `interface` and `receiver` are never read
[INFO] [stderr]  --> src/ping/network_layer.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct NetworkLayer {
[INFO] [stderr]   |            ------------ fields in this struct
[INFO] [stderr] 6 |     interface: datalink::NetworkInterface,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 7 |     transmitter: Box<datalink::DataLinkSender>,
[INFO] [stderr] 8 |     receiver: Box<datalink::DataLinkReceiver>,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: literal out of range for `u8`
[INFO] [stderr]   --> src/ping/ip_header.rs:31:22
[INFO] [stderr]    |
[INFO] [stderr] 31 |             version: 0x0800, // TODO correct value ??
[INFO] [stderr]    |                      ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: the literal `0x0800` (decimal `2048`) does not fit into the type `u8` and will become `0u8`
[INFO] [stderr]    = help: consider using the type `u16` instead
[INFO] [stderr]    = note: `#[warn(overflowing_literals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/ping/ip_header.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 |         header_checksum.write_u16::<BigEndian>(self.header_checksum);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let _ = header_checksum.write_u16::<BigEndian>(self.header_checksum);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `ping-rs` (lib) generated 9 warnings (run `cargo fix --lib -p ping-rs` to apply 4 suggestions)
[INFO] [stderr] warning: `ping-rs` (lib test) generated 9 warnings (9 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ping-54796f4de2e0d050)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/ping_rs-8186c8bc71a1045a)
[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] [stdout] 
[INFO] [stderr]    Doc-tests ping
[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] [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" "05573ebd1349fbd638ce2ad866daa2320afb69d16fb49c4ce61132c5f88fdc69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05573ebd1349fbd638ce2ad866daa2320afb69d16fb49c4ce61132c5f88fdc69", kill_on_drop: false }`
[INFO] [stdout] 05573ebd1349fbd638ce2ad866daa2320afb69d16fb49c4ce61132c5f88fdc69
