[INFO] cloning repository https://github.com/arthur-teixeira/dns-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arthur-teixeira/dns-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farthur-teixeira%2Fdns-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farthur-teixeira%2Fdns-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e181e316ef25f92c6df8beffced2be0d83288b17
[INFO] building arthur-teixeira/dns-server against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farthur-teixeira%2Fdns-server" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arthur-teixeira/dns-server on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arthur-teixeira/dns-server
[INFO] finished tweaking git repo https://github.com/arthur-teixeira/dns-server
[INFO] tweaked toml for git repo https://github.com/arthur-teixeira/dns-server written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/arthur-teixeira/dns-server 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 49e0039886cd370618f37642a5beb79cf94566b94f9f1f53a761c2ad12cb43ce
[INFO] running `Command { std: "docker" "start" "-a" "49e0039886cd370618f37642a5beb79cf94566b94f9f1f53a761c2ad12cb43ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49e0039886cd370618f37642a5beb79cf94566b94f9f1f53a761c2ad12cb43ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49e0039886cd370618f37642a5beb79cf94566b94f9f1f53a761c2ad12cb43ce", kill_on_drop: false }`
[INFO] [stdout] 49e0039886cd370618f37642a5beb79cf94566b94f9f1f53a761c2ad12cb43ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e6761f8a4628c8e5f8e1b07a1fd5701cb1a11d9d4e736b807cd6ca4a33e37fd
[INFO] running `Command { std: "docker" "start" "-a" "6e6761f8a4628c8e5f8e1b07a1fd5701cb1a11d9d4e736b807cd6ca4a33e37fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling ttl_cache v0.5.1
[INFO] [stderr]    Compiling dns-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Entry`
[INFO] [stdout]  --> src/main.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ttl_cache::{Entry, TtlCache};
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/main.rs:681:20
[INFO] [stdout]     |
[INFO] [stdout] 681 |     fn get_ns<'a>(&'a self, qname: &'a str) -> impl Iterator<Item = (&str, &str)> {
[INFO] [stdout]     |                    ^^               ^^                               ----  ---- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                    |                |                                |
[INFO] [stdout]     |                    |                |                                the lifetimes get resolved as `'a`
[INFO] [stdout]     |                    |                these lifetimes flow to the output
[INFO] [stdout]     |                    these lifetimes flow to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 681 |     fn get_ns<'a>(&'a self, qname: &'a str) -> impl Iterator<Item = (&'a str, &'a str)> {
[INFO] [stdout]     |                                                                       ++       ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "6e6761f8a4628c8e5f8e1b07a1fd5701cb1a11d9d4e736b807cd6ca4a33e37fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e6761f8a4628c8e5f8e1b07a1fd5701cb1a11d9d4e736b807cd6ca4a33e37fd", kill_on_drop: false }`
[INFO] [stdout] 6e6761f8a4628c8e5f8e1b07a1fd5701cb1a11d9d4e736b807cd6ca4a33e37fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f04fa4d1ff1a33c671cc8ac899c3ff02cd222ef43154ce8bc3a35c70cd17f83d
[INFO] running `Command { std: "docker" "start" "-a" "f04fa4d1ff1a33c671cc8ac899c3ff02cd222ef43154ce8bc3a35c70cd17f83d", kill_on_drop: false }`
[INFO] [stderr]    Compiling dns-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Entry`
[INFO] [stdout]  --> src/main.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ttl_cache::{Entry, TtlCache};
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/main.rs:681:20
[INFO] [stdout]     |
[INFO] [stdout] 681 |     fn get_ns<'a>(&'a self, qname: &'a str) -> impl Iterator<Item = (&str, &str)> {
[INFO] [stdout]     |                    ^^               ^^                               ----  ---- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                    |                |                                |
[INFO] [stdout]     |                    |                |                                the lifetimes get resolved as `'a`
[INFO] [stdout]     |                    |                these lifetimes flow to the output
[INFO] [stdout]     |                    these lifetimes flow to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 681 |     fn get_ns<'a>(&'a self, qname: &'a str) -> impl Iterator<Item = (&'a str, &'a str)> {
[INFO] [stdout]     |                                                                       ++       ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "f04fa4d1ff1a33c671cc8ac899c3ff02cd222ef43154ce8bc3a35c70cd17f83d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f04fa4d1ff1a33c671cc8ac899c3ff02cd222ef43154ce8bc3a35c70cd17f83d", kill_on_drop: false }`
[INFO] [stdout] f04fa4d1ff1a33c671cc8ac899c3ff02cd222ef43154ce8bc3a35c70cd17f83d