[INFO] cloning repository https://github.com/kflansburg/cnidaria
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kflansburg/cnidaria" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkflansburg%2Fcnidaria", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkflansburg%2Fcnidaria'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca6973f18730b337ad53f6869f51efa3bf9adbee
[INFO] testing kflansburg/cnidaria against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkflansburg%2Fcnidaria" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kflansburg/cnidaria on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kflansburg/cnidaria
[INFO] finished tweaking git repo https://github.com/kflansburg/cnidaria
[INFO] tweaked toml for git repo https://github.com/kflansburg/cnidaria written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/kflansburg/cnidaria already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5271fcbbd0c4d38521512003749c3a469b1356b333537fc3a33cfafb68b2acc9
[INFO] running `Command { std: "docker" "start" "-a" "5271fcbbd0c4d38521512003749c3a469b1356b333537fc3a33cfafb68b2acc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5271fcbbd0c4d38521512003749c3a469b1356b333537fc3a33cfafb68b2acc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5271fcbbd0c4d38521512003749c3a469b1356b333537fc3a33cfafb68b2acc9", kill_on_drop: false }`
[INFO] [stdout] 5271fcbbd0c4d38521512003749c3a469b1356b333537fc3a33cfafb68b2acc9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5cd7d7e1b7777630becc2d15f30da8ccf8fd39fc3aaca7b1e5acfff3b7dc425
[INFO] running `Command { std: "docker" "start" "-a" "b5cd7d7e1b7777630becc2d15f30da8ccf8fd39fc3aaca7b1e5acfff3b7dc425", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.52
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling cnidaria v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `DnsConfig: Serialize` is not satisfied
[INFO] [stdout]     --> src/lib.rs:121:5
[INFO] [stdout]      |
[INFO] [stdout] 121  |     /// Common DNS information.
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Serialize` is not implemented for `DnsConfig`
[INFO] [stdout]      |
[INFO] [stdout]      = note: required because of the requirements on the impl of `Serialize` for `std::option::Option<DnsConfig>`
[INFO] [stdout] note: required by `_::_serde::ser::SerializeStruct::serialize_field`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.117/src/ser/mod.rs:1871:5
[INFO] [stdout]      |
[INFO] [stdout] 1871 | /     fn serialize_field<T: ?Sized>(
[INFO] [stdout] 1872 | |         &mut self,
[INFO] [stdout] 1873 | |         key: &'static str,
[INFO] [stdout] 1874 | |         value: &T,
[INFO] [stdout] 1875 | |     ) -> Result<(), Self::Error>
[INFO] [stdout] 1876 | |     where
[INFO] [stdout] 1877 | |         T: Serialize;
[INFO] [stdout]      | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cnidaria` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b5cd7d7e1b7777630becc2d15f30da8ccf8fd39fc3aaca7b1e5acfff3b7dc425", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5cd7d7e1b7777630becc2d15f30da8ccf8fd39fc3aaca7b1e5acfff3b7dc425", kill_on_drop: false }`
[INFO] [stdout] b5cd7d7e1b7777630becc2d15f30da8ccf8fd39fc3aaca7b1e5acfff3b7dc425