[INFO] cloning repository https://github.com/eugene-yzm/dns-parse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eugene-yzm/dns-parse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feugene-yzm%2Fdns-parse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feugene-yzm%2Fdns-parse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9086966557098ab2df5f82d4dec00af1ae5f5c58
[INFO] building eugene-yzm/dns-parse 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%2Feugene-yzm%2Fdns-parse" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eugene-yzm/dns-parse 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/eugene-yzm/dns-parse
[INFO] finished tweaking git repo https://github.com/eugene-yzm/dns-parse
[INFO] tweaked toml for git repo https://github.com/eugene-yzm/dns-parse written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/eugene-yzm/dns-parse 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 088bcc9a199e8ef8bc2e04e4ef60d4eee0481d8c3a3e228c2cb8c0f9407ee2be
[INFO] running `Command { std: "docker" "start" "-a" "088bcc9a199e8ef8bc2e04e4ef60d4eee0481d8c3a3e228c2cb8c0f9407ee2be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "088bcc9a199e8ef8bc2e04e4ef60d4eee0481d8c3a3e228c2cb8c0f9407ee2be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "088bcc9a199e8ef8bc2e04e4ef60d4eee0481d8c3a3e228c2cb8c0f9407ee2be", kill_on_drop: false }`
[INFO] [stdout] 088bcc9a199e8ef8bc2e04e4ef60d4eee0481d8c3a3e228c2cb8c0f9407ee2be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ebca9b707a6b026e43c6a4cf47f23d771967546fd0a6dae62c2e776ee01df3ea
[INFO] running `Command { std: "docker" "start" "-a" "ebca9b707a6b026e43c6a4cf47f23d771967546fd0a6dae62c2e776ee01df3ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling anyhow v1.0.72
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling dns-parse v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::str;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/main.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let data = vec![0x65, 0x8c, 0x81, 0x80, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x07, 0x74, 0x77, 0x69, 0x74, 0x74, 0x65, 0x7...
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `response`
[INFO] [stdout]   --> src/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let response: Vec<u8> = vec![];
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_response`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Header {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 12 |     id: u16, // A 16 bit generated identifier
[INFO] [stdout]    |     ^^
[INFO] [stdout] 13 |     qr: bool, // query (0), or a response (1)
[INFO] [stdout]    |     ^^
[INFO] [stdout] 14 |     opcode: Opcode, 
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 15 |     aa: bool, //  Authoritative Answer
[INFO] [stdout]    |     ^^
[INFO] [stdout] 16 |     tc: bool, // TrunCation
[INFO] [stdout]    |     ^^
[INFO] [stdout] 17 |     rd: bool, // Recursion Desired
[INFO] [stdout]    |     ^^
[INFO] [stdout] 18 |     ra: bool, // Recursion Available
[INFO] [stdout]    |     ^^
[INFO] [stdout] 19 |     // z Reserved for future use, Must be zero
[INFO] [stdout] 20 |     rcode: Rcode, // Response code
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 21 |     qdcount: u16, // specifies the number of entries in the question section
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 22 |     ancount: u16, // specifies the number of resource records in the answer section 
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 23 |     nscount: u16, // specifies the number of name server resource records in the authority records section
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 24 |     arcount: u16 // specifyies the number of resource records in the additional records section
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Header` 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: variants `FormatErr`, `ServerErr`, `NameErr`, `NoImpl`, and `Refused` are never constructed
[INFO] [stdout]   --> src/main.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | enum Rcode {
[INFO] [stdout]    |      ----- variants in this enum
[INFO] [stdout] 51 |     NoErr, // 0               No error condition
[INFO] [stdout] 52 |     FormatErr, // 1               Format error
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 53 |     ServerErr, // 2               Server failure
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 54 |     NameErr, // 3               Name Error
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 55 |     NoImpl, // 4               Not Implemented
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 56 |     Refused, // 5               Refused
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Rcode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     parse(ds);
[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] 76 |     let _ = parse(ds);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.78s
[INFO] running `Command { std: "docker" "inspect" "ebca9b707a6b026e43c6a4cf47f23d771967546fd0a6dae62c2e776ee01df3ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebca9b707a6b026e43c6a4cf47f23d771967546fd0a6dae62c2e776ee01df3ea", kill_on_drop: false }`
[INFO] [stdout] ebca9b707a6b026e43c6a4cf47f23d771967546fd0a6dae62c2e776ee01df3ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 0f7a921a252bcf443c71340e02e89295cb9abd00f1c215080eb1fc5973ec9cad
[INFO] running `Command { std: "docker" "start" "-a" "0f7a921a252bcf443c71340e02e89295cb9abd00f1c215080eb1fc5973ec9cad", kill_on_drop: false }`
[INFO] [stderr]    Compiling dns-parse v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::str;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/main.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let data = vec![0x65, 0x8c, 0x81, 0x80, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x07, 0x74, 0x77, 0x69, 0x74, 0x74, 0x65, 0x7...
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `response`
[INFO] [stdout]   --> src/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let response: Vec<u8> = vec![];
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_response`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Header {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 12 |     id: u16, // A 16 bit generated identifier
[INFO] [stdout]    |     ^^
[INFO] [stdout] 13 |     qr: bool, // query (0), or a response (1)
[INFO] [stdout]    |     ^^
[INFO] [stdout] 14 |     opcode: Opcode, 
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 15 |     aa: bool, //  Authoritative Answer
[INFO] [stdout]    |     ^^
[INFO] [stdout] 16 |     tc: bool, // TrunCation
[INFO] [stdout]    |     ^^
[INFO] [stdout] 17 |     rd: bool, // Recursion Desired
[INFO] [stdout]    |     ^^
[INFO] [stdout] 18 |     ra: bool, // Recursion Available
[INFO] [stdout]    |     ^^
[INFO] [stdout] 19 |     // z Reserved for future use, Must be zero
[INFO] [stdout] 20 |     rcode: Rcode, // Response code
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 21 |     qdcount: u16, // specifies the number of entries in the question section
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 22 |     ancount: u16, // specifies the number of resource records in the answer section 
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 23 |     nscount: u16, // specifies the number of name server resource records in the authority records section
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 24 |     arcount: u16 // specifyies the number of resource records in the additional records section
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Header` 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: variants `FormatErr`, `ServerErr`, `NameErr`, `NoImpl`, and `Refused` are never constructed
[INFO] [stdout]   --> src/main.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | enum Rcode {
[INFO] [stdout]    |      ----- variants in this enum
[INFO] [stdout] 51 |     NoErr, // 0               No error condition
[INFO] [stdout] 52 |     FormatErr, // 1               Format error
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 53 |     ServerErr, // 2               Server failure
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 54 |     NameErr, // 3               Name Error
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 55 |     NoImpl, // 4               Not Implemented
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 56 |     Refused, // 5               Refused
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Rcode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     parse(ds);
[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] 76 |     let _ = parse(ds);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "0f7a921a252bcf443c71340e02e89295cb9abd00f1c215080eb1fc5973ec9cad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f7a921a252bcf443c71340e02e89295cb9abd00f1c215080eb1fc5973ec9cad", kill_on_drop: false }`
[INFO] [stdout] 0f7a921a252bcf443c71340e02e89295cb9abd00f1c215080eb1fc5973ec9cad