[INFO] cloning repository https://github.com/arashsm79/mohole
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arashsm79/mohole" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farashsm79%2Fmohole", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farashsm79%2Fmohole'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6eb6ebbeb8e44deead76a092eaa784a6e18a19e7
[INFO] building arashsm79/mohole against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farashsm79%2Fmohole" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arashsm79/mohole on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arashsm79/mohole
[INFO] finished tweaking git repo https://github.com/arashsm79/mohole
[INFO] tweaked toml for git repo https://github.com/arashsm79/mohole written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/arashsm79/mohole 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pcap v0.9.1
[INFO] [stderr]   Downloaded libc v0.2.113
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8be9fe415c2795d1cec6956d0aa2144027ef3f4664ff8713c7fac2a2613050cd
[INFO] running `Command { std: "docker" "start" "-a" "8be9fe415c2795d1cec6956d0aa2144027ef3f4664ff8713c7fac2a2613050cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8be9fe415c2795d1cec6956d0aa2144027ef3f4664ff8713c7fac2a2613050cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8be9fe415c2795d1cec6956d0aa2144027ef3f4664ff8713c7fac2a2613050cd", kill_on_drop: false }`
[INFO] [stdout] 8be9fe415c2795d1cec6956d0aa2144027ef3f4664ff8713c7fac2a2613050cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5f5cec08b670cd09f0a001272b5b830eb0df6935682a3cdf4aab8876f257e94
[INFO] running `Command { std: "docker" "start" "-a" "a5f5cec08b670cd09f0a001272b5b830eb0df6935682a3cdf4aab8876f257e94", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling libc v0.2.113
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling errno v0.2.8
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling pcap v0.9.1
[INFO] [stderr]    Compiling mohole v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ethernet.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Other(u16),
[INFO] [stdout]    |     ----- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EtherType` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Other(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `source_mac` and `dest_mac` are never read
[INFO] [stdout]   --> src/ethernet.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct EthernetFrame {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 15 |     pub source_mac: MacAddress,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 16 |     pub dest_mac: MacAddress,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EthernetFrame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ipv4.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Other(u8),
[INFO] [stdout]    |     ----- ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IPType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Other(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/ipv4.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct IPv4Datagram {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 15 |     pub version: u8,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 16 |     pub header_length: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 17 |     pub type_of_service: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 18 |     pub length: u16,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 19 |     pub id: u16,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 20 |     pub flags: u8,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 21 |     pub fragment_offset: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 22 |     pub ttl: u8,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 23 |     pub protocol: IPType,
[INFO] [stdout] 24 |     pub header_checksum: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 25 |     pub source_addr: Ipv4Addr,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 26 |     pub dest_addr: Ipv4Addr,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IPv4Datagram` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/tcp.rs:34:24
[INFO] [stdout]    |
[INFO] [stdout] 34 |     MaximumSegmentSize(u16),
[INFO] [stdout]    |     ------------------ ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TcpOption` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 34 |     MaximumSegmentSize(()),
[INFO] [stdout]    |                        ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/tcp.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |     WindowScale(u8),
[INFO] [stdout]    |     ----------- ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TcpOption` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 35 |     WindowScale(()),
[INFO] [stdout]    |                 ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/tcp.rs:37:15
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Timestamp(u32, u32),
[INFO] [stdout]    |     --------- ^^^  ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TcpOption` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Timestamp((), ()),
[INFO] [stdout]    |               ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/tcp.rs:38:11
[INFO] [stdout]    |
[INFO] [stdout] 38 |     Other(u8),
[INFO] [stdout]    |     ----- ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TcpOption` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 38 |     Other(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/tcp.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct TcpSegment {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 46 |     pub sequence_no: u32,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 47 |     pub ack_no: u32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 48 |     pub header_length: u8,
[INFO] [stdout] 49 |     pub reserved: u8,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 50 |     pub flag_urg: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 51 |     pub flag_ack: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 52 |     pub flag_psh: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 53 |     pub flag_rst: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 54 |     pub flag_syn: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 55 |     pub flag_fin: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 56 |     pub window: u16,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 57 |     pub checksum: u16,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 58 |     pub urgent_pointer: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TcpSegment` 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 `length` and `checksum` are never read
[INFO] [stdout]  --> src/udp.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct UdpDatagram {
[INFO] [stdout]   |            ----------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 7 |     pub length: u16,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 8 |     pub checksum: u16,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `UdpDatagram` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/arp.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Other(u16),
[INFO] [stdout]   |     ----- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `HardwareType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Other(()),
[INFO] [stdout]   |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/arp.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Other(u16),
[INFO] [stdout]    |     ----- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProtocolType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Other(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/arp.rs:39:11
[INFO] [stdout]    |
[INFO] [stdout] 39 |     Other(u16),
[INFO] [stdout]    |     ----- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Operation` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 39 |     Other(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/arp.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub struct ArpPacket {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 54 |     pub hw_type: HardwareType,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 55 |     pub protocol_type: ProtocolType,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 56 |     pub hw_size: u8,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 57 |     pub protocol_size: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 58 |     pub operation: Operation,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 59 |     pub src_mac: MacAddress,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 60 |     pub src_addr: Ipv4Addr,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 61 |     pub dest_mac: MacAddress,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 62 |     pub dest_addr: Ipv4Addr,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ArpPacket` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/icmp.rs:57:28
[INFO] [stdout]    |
[INFO] [stdout] 57 |     DestinationUnreachable(Unreachable),
[INFO] [stdout]    |     ---------------------- ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 57 |     DestinationUnreachable(()),
[INFO] [stdout]    |                            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/icmp.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |     Redirect(Redirect),
[INFO] [stdout]    |     -------- ^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 59 |     Redirect(()),
[INFO] [stdout]    |              ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/icmp.rs:63:18
[INFO] [stdout]    |
[INFO] [stdout] 63 |     TimeExceeded(TimeExceeded),
[INFO] [stdout]    |     ------------ ^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 63 |     TimeExceeded(()),
[INFO] [stdout]    |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/icmp.rs:64:22
[INFO] [stdout]    |
[INFO] [stdout] 64 |     ParameterProblem(ParameterProblem),
[INFO] [stdout]    |     ---------------- ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 64 |     ParameterProblem(()),
[INFO] [stdout]    |                      ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/icmp.rs:68:23
[INFO] [stdout]    |
[INFO] [stdout] 68 |     ExtendedEchoReply(ExtendedEchoReply),
[INFO] [stdout]    |     ----------------- ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 68 |     ExtendedEchoReply(()),
[INFO] [stdout]    |                       ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/icmp.rs:69:11
[INFO] [stdout]    |
[INFO] [stdout] 69 |     Other(u16),
[INFO] [stdout]    |     ----- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 69 |     Other(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code` and `checksum` are never read
[INFO] [stdout]    --> src/icmp.rs:148:9
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub struct IcmpPacket {
[INFO] [stdout]     |            ---------- fields in this struct
[INFO] [stdout] 148 |     pub code: IcmpCode,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 149 |     pub checksum: u16,
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.86s
[INFO] running `Command { std: "docker" "inspect" "a5f5cec08b670cd09f0a001272b5b830eb0df6935682a3cdf4aab8876f257e94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5f5cec08b670cd09f0a001272b5b830eb0df6935682a3cdf4aab8876f257e94", kill_on_drop: false }`
[INFO] [stdout] a5f5cec08b670cd09f0a001272b5b830eb0df6935682a3cdf4aab8876f257e94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68f3598bb0c6d92e3f25ae7629c7b36bc2f07d5a22a0fb91e4dfe8d064f64c55
[INFO] running `Command { std: "docker" "start" "-a" "68f3598bb0c6d92e3f25ae7629c7b36bc2f07d5a22a0fb91e4dfe8d064f64c55", kill_on_drop: false }`
[INFO] [stderr]    Compiling mohole v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ethernet.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Other(u16),
[INFO] [stdout]    |     ----- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EtherType` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Other(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `source_mac` and `dest_mac` are never read
[INFO] [stdout]   --> src/ethernet.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct EthernetFrame {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 15 |     pub source_mac: MacAddress,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 16 |     pub dest_mac: MacAddress,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EthernetFrame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ipv4.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Other(u8),
[INFO] [stdout]    |     ----- ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IPType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Other(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/ipv4.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct IPv4Datagram {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 15 |     pub version: u8,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 16 |     pub header_length: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 17 |     pub type_of_service: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 18 |     pub length: u16,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 19 |     pub id: u16,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 20 |     pub flags: u8,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 21 |     pub fragment_offset: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 22 |     pub ttl: u8,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 23 |     pub protocol: IPType,
[INFO] [stdout] 24 |     pub header_checksum: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 25 |     pub source_addr: Ipv4Addr,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 26 |     pub dest_addr: Ipv4Addr,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IPv4Datagram` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/tcp.rs:34:24
[INFO] [stdout]    |
[INFO] [stdout] 34 |     MaximumSegmentSize(u16),
[INFO] [stdout]    |     ------------------ ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TcpOption` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 34 |     MaximumSegmentSize(()),
[INFO] [stdout]    |                        ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/tcp.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |     WindowScale(u8),
[INFO] [stdout]    |     ----------- ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TcpOption` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 35 |     WindowScale(()),
[INFO] [stdout]    |                 ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/tcp.rs:37:15
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Timestamp(u32, u32),
[INFO] [stdout]    |     --------- ^^^  ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TcpOption` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Timestamp((), ()),
[INFO] [stdout]    |               ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/tcp.rs:38:11
[INFO] [stdout]    |
[INFO] [stdout] 38 |     Other(u8),
[INFO] [stdout]    |     ----- ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TcpOption` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 38 |     Other(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/tcp.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct TcpSegment {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 46 |     pub sequence_no: u32,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 47 |     pub ack_no: u32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 48 |     pub header_length: u8,
[INFO] [stdout] 49 |     pub reserved: u8,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 50 |     pub flag_urg: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 51 |     pub flag_ack: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 52 |     pub flag_psh: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 53 |     pub flag_rst: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 54 |     pub flag_syn: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 55 |     pub flag_fin: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 56 |     pub window: u16,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 57 |     pub checksum: u16,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 58 |     pub urgent_pointer: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TcpSegment` 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 `length` and `checksum` are never read
[INFO] [stdout]  --> src/udp.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct UdpDatagram {
[INFO] [stdout]   |            ----------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 7 |     pub length: u16,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 8 |     pub checksum: u16,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `UdpDatagram` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/arp.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Other(u16),
[INFO] [stdout]   |     ----- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `HardwareType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Other(()),
[INFO] [stdout]   |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/arp.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Other(u16),
[INFO] [stdout]    |     ----- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProtocolType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Other(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/arp.rs:39:11
[INFO] [stdout]    |
[INFO] [stdout] 39 |     Other(u16),
[INFO] [stdout]    |     ----- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Operation` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 39 |     Other(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/arp.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub struct ArpPacket {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 54 |     pub hw_type: HardwareType,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 55 |     pub protocol_type: ProtocolType,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 56 |     pub hw_size: u8,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 57 |     pub protocol_size: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 58 |     pub operation: Operation,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 59 |     pub src_mac: MacAddress,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 60 |     pub src_addr: Ipv4Addr,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 61 |     pub dest_mac: MacAddress,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 62 |     pub dest_addr: Ipv4Addr,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ArpPacket` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/icmp.rs:57:28
[INFO] [stdout]    |
[INFO] [stdout] 57 |     DestinationUnreachable(Unreachable),
[INFO] [stdout]    |     ---------------------- ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 57 |     DestinationUnreachable(()),
[INFO] [stdout]    |                            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/icmp.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |     Redirect(Redirect),
[INFO] [stdout]    |     -------- ^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 59 |     Redirect(()),
[INFO] [stdout]    |              ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/icmp.rs:63:18
[INFO] [stdout]    |
[INFO] [stdout] 63 |     TimeExceeded(TimeExceeded),
[INFO] [stdout]    |     ------------ ^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 63 |     TimeExceeded(()),
[INFO] [stdout]    |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/icmp.rs:64:22
[INFO] [stdout]    |
[INFO] [stdout] 64 |     ParameterProblem(ParameterProblem),
[INFO] [stdout]    |     ---------------- ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 64 |     ParameterProblem(()),
[INFO] [stdout]    |                      ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/icmp.rs:68:23
[INFO] [stdout]    |
[INFO] [stdout] 68 |     ExtendedEchoReply(ExtendedEchoReply),
[INFO] [stdout]    |     ----------------- ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 68 |     ExtendedEchoReply(()),
[INFO] [stdout]    |                       ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/icmp.rs:69:11
[INFO] [stdout]    |
[INFO] [stdout] 69 |     Other(u16),
[INFO] [stdout]    |     ----- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 69 |     Other(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code` and `checksum` are never read
[INFO] [stdout]    --> src/icmp.rs:148:9
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub struct IcmpPacket {
[INFO] [stdout]     |            ---------- fields in this struct
[INFO] [stdout] 148 |     pub code: IcmpCode,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 149 |     pub checksum: u16,
[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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "68f3598bb0c6d92e3f25ae7629c7b36bc2f07d5a22a0fb91e4dfe8d064f64c55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68f3598bb0c6d92e3f25ae7629c7b36bc2f07d5a22a0fb91e4dfe8d064f64c55", kill_on_drop: false }`
[INFO] [stdout] 68f3598bb0c6d92e3f25ae7629c7b36bc2f07d5a22a0fb91e4dfe8d064f64c55