[INFO] fetching crate traceroute 0.1.1...
[INFO] building traceroute-0.1.1 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate traceroute 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate traceroute 0.1.1
[INFO] finished tweaking crates.io crate traceroute 0.1.1
[INFO] tweaked toml for crates.io crate traceroute 0.1.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate traceroute 0.1.1 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages to latest compatible versions
[INFO] [stderr]       Adding libc v0.1.12 (available: v0.2.176)
[INFO] [stderr]       Adding rand v0.3.23 (available: v0.9.2)
[INFO] [stderr]       Adding time v0.1.45 (available: v0.3.44)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.1.12
[INFO] [stderr]   Downloaded socket v0.0.7
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70ed8e95b96b00471ad8d826c6a5a14865337849b7ccf0b0ebb1bf16ef7a76f4
[INFO] running `Command { std: "docker" "start" "-a" "70ed8e95b96b00471ad8d826c6a5a14865337849b7ccf0b0ebb1bf16ef7a76f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70ed8e95b96b00471ad8d826c6a5a14865337849b7ccf0b0ebb1bf16ef7a76f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70ed8e95b96b00471ad8d826c6a5a14865337849b7ccf0b0ebb1bf16ef7a76f4", kill_on_drop: false }`
[INFO] [stdout] 70ed8e95b96b00471ad8d826c6a5a14865337849b7ccf0b0ebb1bf16ef7a76f4
[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=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50d94a7d8e65febd9114a295d6b2daa05a94cdb8b191103a09811f0981294bff
[INFO] running `Command { std: "docker" "start" "-a" "50d94a7d8e65febd9114a295d6b2daa05a94cdb8b191103a09811f0981294bff", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling socket v0.0.7
[INFO] [stderr]    Compiling traceroute v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut addr_iter = try!(address.to_socket_addrs());
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:80:22
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let socket = try!(Socket::new(AF_INET, SOCK_RAW, IPPROTO_ICMP));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |             try!(socket.setsockopt(IPPROTO_IP, IP_TTL, self.ttl));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |             try!(socket.setsockopt(SOL_SOCKET, SO_RCVTIMEO, compute_timeout(self.timeout)));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:89:25
[INFO] [stdout]    |
[INFO] [stdout] 89 |             let wrote = try!(socket.sendto(&ping, 0, &self.addr));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:105:28
[INFO] [stdout]     |
[INFO] [stdout] 105 |                 let data = try!(ip_payload(&data));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/lib.rs:172:27
[INFO] [stdout]     |
[INFO] [stdout] 172 |     EchoReply(IcmpHeader, &'a [u8]),
[INFO] [stdout]     |     ---------             ^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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] 172 -     EchoReply(IcmpHeader, &'a [u8]),
[INFO] [stdout] 172 +     EchoReply(IcmpHeader, ()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:173:18
[INFO] [stdout]     |
[INFO] [stdout] 173 |     TimeExceeded(IcmpHeader, &'a [u8]),
[INFO] [stdout]     |     ------------ ^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[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] 173 -     TimeExceeded(IcmpHeader, &'a [u8]),
[INFO] [stdout] 173 +     TimeExceeded((), &'a [u8]),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |     Unknown(IcmpHeader),
[INFO] [stdout]     |     ------- ^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[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] 174 -     Unknown(IcmpHeader),
[INFO] [stdout] 174 +     Unknown(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code` and `checksum` are never read
[INFO] [stdout]    --> src/lib.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout] 201 | struct IcmpHeader {
[INFO] [stdout]     |        ---------- fields in this struct
[INFO] [stdout] 202 |     pub msg_type: u8,
[INFO] [stdout] 203 |     pub code: u8,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 204 |     pub checksum: 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] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.04s
[INFO] running `Command { std: "docker" "inspect" "50d94a7d8e65febd9114a295d6b2daa05a94cdb8b191103a09811f0981294bff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50d94a7d8e65febd9114a295d6b2daa05a94cdb8b191103a09811f0981294bff", kill_on_drop: false }`
[INFO] [stdout] 50d94a7d8e65febd9114a295d6b2daa05a94cdb8b191103a09811f0981294bff
[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=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0397c4ab36818ebd6936867b0301cc27333881ab576e202b24fb43e2e2152723
[INFO] running `Command { std: "docker" "start" "-a" "0397c4ab36818ebd6936867b0301cc27333881ab576e202b24fb43e2e2152723", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling traceroute v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut addr_iter = try!(address.to_socket_addrs());
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:80:22
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let socket = try!(Socket::new(AF_INET, SOCK_RAW, IPPROTO_ICMP));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |             try!(socket.setsockopt(IPPROTO_IP, IP_TTL, self.ttl));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |             try!(socket.setsockopt(SOL_SOCKET, SO_RCVTIMEO, compute_timeout(self.timeout)));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:89:25
[INFO] [stdout]    |
[INFO] [stdout] 89 |             let wrote = try!(socket.sendto(&ping, 0, &self.addr));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:105:28
[INFO] [stdout]     |
[INFO] [stdout] 105 |                 let data = try!(ip_payload(&data));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/lib.rs:172:27
[INFO] [stdout]     |
[INFO] [stdout] 172 |     EchoReply(IcmpHeader, &'a [u8]),
[INFO] [stdout]     |     ---------             ^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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] 172 -     EchoReply(IcmpHeader, &'a [u8]),
[INFO] [stdout] 172 +     EchoReply(IcmpHeader, ()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:173:18
[INFO] [stdout]     |
[INFO] [stdout] 173 |     TimeExceeded(IcmpHeader, &'a [u8]),
[INFO] [stdout]     |     ------------ ^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[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] 173 -     TimeExceeded(IcmpHeader, &'a [u8]),
[INFO] [stdout] 173 +     TimeExceeded((), &'a [u8]),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |     Unknown(IcmpHeader),
[INFO] [stdout]     |     ------- ^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[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] 174 -     Unknown(IcmpHeader),
[INFO] [stdout] 174 +     Unknown(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code` and `checksum` are never read
[INFO] [stdout]    --> src/lib.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout] 201 | struct IcmpHeader {
[INFO] [stdout]     |        ---------- fields in this struct
[INFO] [stdout] 202 |     pub msg_type: u8,
[INFO] [stdout] 203 |     pub code: u8,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 204 |     pub checksum: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut addr_iter = try!(address.to_socket_addrs());
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:80:22
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let socket = try!(Socket::new(AF_INET, SOCK_RAW, IPPROTO_ICMP));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |             try!(socket.setsockopt(IPPROTO_IP, IP_TTL, self.ttl));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |             try!(socket.setsockopt(SOL_SOCKET, SO_RCVTIMEO, compute_timeout(self.timeout)));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:89:25
[INFO] [stdout]    |
[INFO] [stdout] 89 |             let wrote = try!(socket.sendto(&ping, 0, &self.addr));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:105:28
[INFO] [stdout]     |
[INFO] [stdout] 105 |                 let data = try!(ip_payload(&data));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/lib.rs:172:27
[INFO] [stdout]     |
[INFO] [stdout] 172 |     EchoReply(IcmpHeader, &'a [u8]),
[INFO] [stdout]     |     ---------             ^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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] 172 -     EchoReply(IcmpHeader, &'a [u8]),
[INFO] [stdout] 172 +     EchoReply(IcmpHeader, ()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:173:18
[INFO] [stdout]     |
[INFO] [stdout] 173 |     TimeExceeded(IcmpHeader, &'a [u8]),
[INFO] [stdout]     |     ------------ ^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[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] 173 -     TimeExceeded(IcmpHeader, &'a [u8]),
[INFO] [stdout] 173 +     TimeExceeded((), &'a [u8]),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |     Unknown(IcmpHeader),
[INFO] [stdout]     |     ------- ^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[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] 174 -     Unknown(IcmpHeader),
[INFO] [stdout] 174 +     Unknown(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code` and `checksum` are never read
[INFO] [stdout]    --> src/lib.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout] 201 | struct IcmpHeader {
[INFO] [stdout]     |        ---------- fields in this struct
[INFO] [stdout] 202 |     pub msg_type: u8,
[INFO] [stdout] 203 |     pub code: u8,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 204 |     pub checksum: 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] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "0397c4ab36818ebd6936867b0301cc27333881ab576e202b24fb43e2e2152723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0397c4ab36818ebd6936867b0301cc27333881ab576e202b24fb43e2e2152723", kill_on_drop: false }`
[INFO] [stdout] 0397c4ab36818ebd6936867b0301cc27333881ab576e202b24fb43e2e2152723
