[INFO] cloning repository https://github.com/jawline/rust_dns_client
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jawline/rust_dns_client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjawline%2Frust_dns_client"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjawline%2Frust_dns_client'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d86f63660711439907dc9c38516c33da0cb2d283
[INFO] checking jawline/rust_dns_client against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjawline%2Frust_dns_client" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jawline/rust_dns_client on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jawline/rust_dns_client
[INFO] finished tweaking git repo https://github.com/jawline/rust_dns_client
[INFO] tweaked toml for git repo https://github.com/jawline/rust_dns_client written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jawline/rust_dns_client already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e5a7074184ea8706aac18092d07e973a462539e659c060d4faa2ebfab0b6bc3b
[INFO] running `"docker" "start" "-a" "e5a7074184ea8706aac18092d07e973a462539e659c060d4faa2ebfab0b6bc3b"`
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]     Checking dns_client v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/record.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |         "NS" => Some(NS_CODE),
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/record.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |         "NS" => Some(NS_CODE),
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/record.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |         "NS" => Some(NS_CODE),
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/record.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |         "NS" => Some(NS_CODE),
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SOA_CODE`
[INFO] [stderr]  --> src/record.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub const SOA_CODE: u16 = 0x6;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `WKS_CODE`
[INFO] [stderr]  --> src/record.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub const WKS_CODE: u16 = 0xB;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PTR_CODE`
[INFO] [stderr]  --> src/record.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub const PTR_CODE: u16 = 0xC;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SRV_CODE`
[INFO] [stderr]   --> src/record.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub const SRV_CODE: u16 = 0x21;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `AAAA_CODE`
[INFO] [stderr]   --> src/record.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub const AAAA_CODE: u16 = 0x1C;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SOA_CODE`
[INFO] [stderr]  --> src/record.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub const SOA_CODE: u16 = 0x6;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `WKS_CODE`
[INFO] [stderr]  --> src/record.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub const WKS_CODE: u16 = 0xB;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PTR_CODE`
[INFO] [stderr]  --> src/record.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub const PTR_CODE: u16 = 0xC;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SRV_CODE`
[INFO] [stderr]   --> src/record.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub const SRV_CODE: u16 = 0x21;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `AAAA_CODE`
[INFO] [stderr]   --> src/record.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub const AAAA_CODE: u16 = 0x1C;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `"docker" "inspect" "e5a7074184ea8706aac18092d07e973a462539e659c060d4faa2ebfab0b6bc3b"`
[INFO] running `"docker" "rm" "-f" "e5a7074184ea8706aac18092d07e973a462539e659c060d4faa2ebfab0b6bc3b"`
[INFO] [stdout] e5a7074184ea8706aac18092d07e973a462539e659c060d4faa2ebfab0b6bc3b