[INFO] cloning repository https://github.com/28Smiles/flex-dns
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/28Smiles/flex-dns" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F28Smiles%2Fflex-dns", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F28Smiles%2Fflex-dns'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af5bb33edc749111181a5a3cdc23bef10ee063cc
[INFO] checking 28Smiles/flex-dns against try#2b39fe756f52bc2825bf5b2bfc385cab922dae10 for pr-143011
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F28Smiles%2Fflex-dns" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/28Smiles/flex-dns
[INFO] finished tweaking git repo https://github.com/28Smiles/flex-dns
[INFO] tweaked toml for git repo https://github.com/28Smiles/flex-dns written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/28Smiles/flex-dns on toolchain 2b39fe756f52bc2825bf5b2bfc385cab922dae10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/28Smiles/flex-dns 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" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4a0a1945f43d39713d9487f31cf160b9c8503e3b74504c0f65ebd9f8b48b021
[INFO] running `Command { std: "docker" "start" "-a" "c4a0a1945f43d39713d9487f31cf160b9c8503e3b74504c0f65ebd9f8b48b021", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4a0a1945f43d39713d9487f31cf160b9c8503e3b74504c0f65ebd9f8b48b021", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4a0a1945f43d39713d9487f31cf160b9c8503e3b74504c0f65ebd9f8b48b021", kill_on_drop: false }`
[INFO] [stdout] c4a0a1945f43d39713d9487f31cf160b9c8503e3b74504c0f65ebd9f8b48b021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 598e37317a29c1aba6f97b55105754778030f0a2fc35f6d6d1c718bdef4fcc0a
[INFO] running `Command { std: "docker" "start" "-a" "598e37317a29c1aba6f97b55105754778030f0a2fc35f6d6d1c718bdef4fcc0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.18
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking simple-dns v0.5.3
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling heapless v0.7.16
[INFO] [stderr]     Checking flex-dns v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generic_const_exprs)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generic_const_exprs)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` 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/question.rs:30:17
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn iter(&mut self) -> Result<DnsQuestionIterator, DnsMessageError> {
[INFO] [stdout]    |                 ^^^^^^^^^            ------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn iter(&mut self) -> Result<DnsQuestionIterator<'_>, DnsMessageError> {
[INFO] [stdout]    |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/name_servers.rs:33:17
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn iter(&mut self) -> Result<DnsNameServersIterator, DnsMessageError> {
[INFO] [stdout]    |                 ^^^^^^^^^            ---------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn iter(&mut self) -> Result<DnsNameServersIterator<'_>, DnsMessageError> {
[INFO] [stdout]    |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/additional.rs:33:17
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn iter(&mut self) -> Result<DnsAdditionalsIterator, DnsMessageError> {
[INFO] [stdout]    |                 ^^^^^^^^^            ---------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn iter(&mut self) -> Result<DnsAdditionalsIterator<'_>, DnsMessageError> {
[INFO] [stdout]    |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/answer.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn iter(&mut self) -> Result<DnsAnswerIterator, DnsMessageError> {
[INFO] [stdout]    |                 ^^^^^^^^^            ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn iter(&mut self) -> Result<DnsAnswerIterator<'_>, DnsMessageError> {
[INFO] [stdout]    |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/question.rs:30:17
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn iter(&mut self) -> Result<DnsQuestionIterator, DnsMessageError> {
[INFO] [stdout]    |                 ^^^^^^^^^            ------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn iter(&mut self) -> Result<DnsQuestionIterator<'_>, DnsMessageError> {
[INFO] [stdout]    |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/name_servers.rs:33:17
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn iter(&mut self) -> Result<DnsNameServersIterator, DnsMessageError> {
[INFO] [stdout]    |                 ^^^^^^^^^            ---------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn iter(&mut self) -> Result<DnsNameServersIterator<'_>, DnsMessageError> {
[INFO] [stdout]    |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/additional.rs:33:17
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn iter(&mut self) -> Result<DnsAdditionalsIterator, DnsMessageError> {
[INFO] [stdout]    |                 ^^^^^^^^^            ---------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn iter(&mut self) -> Result<DnsAdditionalsIterator<'_>, DnsMessageError> {
[INFO] [stdout]    |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/answer.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn iter(&mut self) -> Result<DnsAnswerIterator, DnsMessageError> {
[INFO] [stdout]    |                 ^^^^^^^^^            ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn iter(&mut self) -> Result<DnsAnswerIterator<'_>, DnsMessageError> {
[INFO] [stdout]    |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.82s
[INFO] running `Command { std: "docker" "inspect" "598e37317a29c1aba6f97b55105754778030f0a2fc35f6d6d1c718bdef4fcc0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "598e37317a29c1aba6f97b55105754778030f0a2fc35f6d6d1c718bdef4fcc0a", kill_on_drop: false }`
[INFO] [stdout] 598e37317a29c1aba6f97b55105754778030f0a2fc35f6d6d1c718bdef4fcc0a
