[INFO] cloning repository https://github.com/0x0decaf/crabhole
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0x0decaf/crabhole" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x0decaf%2Fcrabhole", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x0decaf%2Fcrabhole'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54e58b8136e183149118c714348d8ed60651b585
[INFO] testing 0x0decaf/crabhole against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x0decaf%2Fcrabhole" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/0x0decaf/crabhole
[INFO] finished tweaking git repo https://github.com/0x0decaf/crabhole
[INFO] tweaked toml for git repo https://github.com/0x0decaf/crabhole written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/0x0decaf/crabhole on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/0x0decaf/crabhole 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded once_cell v1.14.0
[INFO] [stderr]   Downloaded lock_api v0.4.8
[INFO] [stderr]   Downloaded syn v1.0.99
[INFO] [stderr]   Downloaded libc v0.2.132
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57e3dbeac8448ebdff40103e2e59ea5a92efac28625e9a90c9a13657ee4a83db
[INFO] running `Command { std: "docker" "start" "-a" "57e3dbeac8448ebdff40103e2e59ea5a92efac28625e9a90c9a13657ee4a83db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57e3dbeac8448ebdff40103e2e59ea5a92efac28625e9a90c9a13657ee4a83db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57e3dbeac8448ebdff40103e2e59ea5a92efac28625e9a90c9a13657ee4a83db", kill_on_drop: false }`
[INFO] [stdout] 57e3dbeac8448ebdff40103e2e59ea5a92efac28625e9a90c9a13657ee4a83db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37b11dd77c47836da29fe3f2e9e4320ea4f98274cc7bf7e50e54bc1d4f0e6223
[INFO] running `Command { std: "docker" "start" "-a" "37b11dd77c47836da29fe3f2e9e4320ea4f98274cc7bf7e50e54bc1d4f0e6223", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling once_cell v1.14.0
[INFO] [stderr]    Compiling bytes v1.2.1
[INFO] [stderr]    Compiling lock_api v0.4.8
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling tokio v1.21.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling socket2 v0.4.7
[INFO] [stderr]    Compiling mio v0.8.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling crabx v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `FORMAT_ERROR` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     FORMAT_ERROR,
[INFO] [stdout]    |     ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `FormatError`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `SERV_FAIL` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     SERV_FAIL,
[INFO] [stdout]    |     ^^^^^^^^^ help: convert the identifier to upper camel case: `ServFail`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NAME_ERROR` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     NAME_ERROR,
[INFO] [stdout]    |     ^^^^^^^^^^ help: convert the identifier to upper camel case: `NameError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NOT_IMPLEMENTED` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     NOT_IMPLEMENTED,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `NotImplemented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut listener = tokio::net::UdpSocket::bind("0.0.0.0:53")
[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: variants `NOERR`, `FORMAT_ERROR`, `SERV_FAIL`, `NAME_ERROR`, `NOT_IMPLEMENTED`, and `REFUSED` are never constructed
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | enum DNSResponseCode {
[INFO] [stdout]    |      --------------- variants in this enum
[INFO] [stdout] 35 |     NOERR,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 36 |     FORMAT_ERROR,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 37 |     SERV_FAIL,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 38 |     NAME_ERROR,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 39 |     NOT_IMPLEMENTED,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 40 |     REFUSED,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DNSResponseCode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/main.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct DNSHeader {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 51 |     authoritative: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 52 |     truncated: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 53 |     recursion_desired: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 54 |     recursion_available: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 55 |     response_code: DNSResponseCode,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 56 |     question_count: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 57 |     answer_count: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 58 |     nameserver_count: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 59 |     additional_records_count: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DNSHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 52.86s
[INFO] running `Command { std: "docker" "inspect" "37b11dd77c47836da29fe3f2e9e4320ea4f98274cc7bf7e50e54bc1d4f0e6223", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37b11dd77c47836da29fe3f2e9e4320ea4f98274cc7bf7e50e54bc1d4f0e6223", kill_on_drop: false }`
[INFO] [stdout] 37b11dd77c47836da29fe3f2e9e4320ea4f98274cc7bf7e50e54bc1d4f0e6223
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 397743d321699cfe8a391cc9e170c8bdd7dfe1699f34dba60ea20c379822236a
[INFO] running `Command { std: "docker" "start" "-a" "397743d321699cfe8a391cc9e170c8bdd7dfe1699f34dba60ea20c379822236a", kill_on_drop: false }`
[INFO] [stderr]    Compiling crabx v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `FORMAT_ERROR` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     FORMAT_ERROR,
[INFO] [stdout]    |     ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `FormatError`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `SERV_FAIL` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     SERV_FAIL,
[INFO] [stdout]    |     ^^^^^^^^^ help: convert the identifier to upper camel case: `ServFail`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NAME_ERROR` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     NAME_ERROR,
[INFO] [stdout]    |     ^^^^^^^^^^ help: convert the identifier to upper camel case: `NameError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NOT_IMPLEMENTED` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     NOT_IMPLEMENTED,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `NotImplemented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut listener = tokio::net::UdpSocket::bind("0.0.0.0:53")
[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: variants `NOERR`, `FORMAT_ERROR`, `SERV_FAIL`, `NAME_ERROR`, `NOT_IMPLEMENTED`, and `REFUSED` are never constructed
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | enum DNSResponseCode {
[INFO] [stdout]    |      --------------- variants in this enum
[INFO] [stdout] 35 |     NOERR,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 36 |     FORMAT_ERROR,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 37 |     SERV_FAIL,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 38 |     NAME_ERROR,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 39 |     NOT_IMPLEMENTED,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 40 |     REFUSED,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DNSResponseCode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/main.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct DNSHeader {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 51 |     authoritative: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 52 |     truncated: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 53 |     recursion_desired: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 54 |     recursion_available: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 55 |     response_code: DNSResponseCode,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 56 |     question_count: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 57 |     answer_count: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 58 |     nameserver_count: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 59 |     additional_records_count: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DNSHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "397743d321699cfe8a391cc9e170c8bdd7dfe1699f34dba60ea20c379822236a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "397743d321699cfe8a391cc9e170c8bdd7dfe1699f34dba60ea20c379822236a", kill_on_drop: false }`
[INFO] [stdout] 397743d321699cfe8a391cc9e170c8bdd7dfe1699f34dba60ea20c379822236a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7bcebb8cdcd06355e0cbe31b446e191b1aa8101f4b7d3462b84bbc9ff7a9c3e0
[INFO] running `Command { std: "docker" "start" "-a" "7bcebb8cdcd06355e0cbe31b446e191b1aa8101f4b7d3462b84bbc9ff7a9c3e0", kill_on_drop: false }`
[INFO] [stderr] warning: variant `FORMAT_ERROR` should have an upper camel case name
[INFO] [stderr]   --> src/main.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     FORMAT_ERROR,
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `FormatError`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `SERV_FAIL` should have an upper camel case name
[INFO] [stderr]   --> src/main.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     SERV_FAIL,
[INFO] [stderr]    |     ^^^^^^^^^ help: convert the identifier to upper camel case: `ServFail`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `NAME_ERROR` should have an upper camel case name
[INFO] [stderr]   --> src/main.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     NAME_ERROR,
[INFO] [stderr]    |     ^^^^^^^^^^ help: convert the identifier to upper camel case: `NameError`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `NOT_IMPLEMENTED` should have an upper camel case name
[INFO] [stderr]   --> src/main.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     NOT_IMPLEMENTED,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `NotImplemented`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |     let mut listener = tokio::net::UdpSocket::bind("0.0.0.0:53")
[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: variants `NOERR`, `FORMAT_ERROR`, `SERV_FAIL`, `NAME_ERROR`, `NOT_IMPLEMENTED`, and `REFUSED` are never constructed
[INFO] [stderr]   --> src/main.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 34 | enum DNSResponseCode {
[INFO] [stderr]    |      --------------- variants in this enum
[INFO] [stderr] 35 |     NOERR,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 36 |     FORMAT_ERROR,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 37 |     SERV_FAIL,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 38 |     NAME_ERROR,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 39 |     NOT_IMPLEMENTED,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 40 |     REFUSED,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `DNSResponseCode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: multiple fields are never read
[INFO] [stderr]   --> src/main.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 47 | struct DNSHeader {
[INFO] [stderr]    |        --------- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 51 |     authoritative: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 52 |     truncated: bool,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 53 |     recursion_desired: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 54 |     recursion_available: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 55 |     response_code: DNSResponseCode,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 56 |     question_count: u16,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 57 |     answer_count: u16,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 58 |     nameserver_count: u16,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 59 |     additional_records_count: u16,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `DNSHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `crabx` (bin "crabx" test) generated 7 warnings (run `cargo fix --bin "crabx" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/crabx-c7357f9ae59a55eb)
[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" "7bcebb8cdcd06355e0cbe31b446e191b1aa8101f4b7d3462b84bbc9ff7a9c3e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bcebb8cdcd06355e0cbe31b446e191b1aa8101f4b7d3462b84bbc9ff7a9c3e0", kill_on_drop: false }`
[INFO] [stdout] 7bcebb8cdcd06355e0cbe31b446e191b1aa8101f4b7d3462b84bbc9ff7a9c3e0
