[INFO] fetching crate tentacle-secio 0.4.0...
[INFO] documenting tentacle-secio-0.4.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate tentacle-secio 0.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate tentacle-secio 0.4.0 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tentacle-secio 0.4.0
[INFO] finished tweaking crates.io crate tentacle-secio 0.4.0
[INFO] tweaked toml for crates.io crate tentacle-secio 0.4.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate tentacle-secio 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded molecule v0.6.0
[INFO] [stderr]   Downloaded flatbuffers-verifier v0.2.1
[INFO] running `Command { std: "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" "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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d00fa40e560bc9c2646c5f476eb3882e602c40dd02fc2880286059d78623097
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9d00fa40e560bc9c2646c5f476eb3882e602c40dd02fc2880286059d78623097", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d00fa40e560bc9c2646c5f476eb3882e602c40dd02fc2880286059d78623097", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d00fa40e560bc9c2646c5f476eb3882e602c40dd02fc2880286059d78623097", kill_on_drop: false }`
[INFO] [stdout] 9d00fa40e560bc9c2646c5f476eb3882e602c40dd02fc2880286059d78623097
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6af7cb0b8883a2af9ea705b9e776216c8ae8be9dc4edf00f3e5a0738d6f4087
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c6af7cb0b8883a2af9ea705b9e776216c8ae8be9dc4edf00f3e5a0738d6f4087", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling tentacle-secio v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bs58 v0.3.1
[INFO] [stderr]     Checking unsigned-varint v0.3.3
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling ring v0.16.12
[INFO] [stderr]    Compiling secp256k1-sys v0.1.2
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]     Checking secp256k1 v0.17.2
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]  Documenting tentacle-secio v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: Please choose a serialization format via feature. Possible choices: flatc, molc
[INFO] [stdout]   --> src/handshake/mod.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | compile_error!("Please choose a serialization format via feature. Possible choices: flatc, molc");
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `tentacle-secio`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name tentacle_secio src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern bs58=/opt/rustwide/target/debug/deps/libbs58-5e63cf6df07a144b.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-c5714e68d7e46dbf.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-ba612bf5c3770c2b.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-95a9d57e67df36ac.rmeta --extern openssl=/opt/rustwide/target/debug/deps/libopenssl-be429f9e8ecba67f.rmeta --extern openssl_sys=/opt/rustwide/target/debug/deps/libopenssl_sys-081b9b79ddc0d66b.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-2d3d6fef368c3ebb.rmeta --extern ring=/opt/rustwide/target/debug/deps/libring-0c0d3023b118ad6f.rmeta --extern secp256k1=/opt/rustwide/target/debug/deps/libsecp256k1-ee367398b019052e.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-57eddedd53ed0877.rmeta --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-1884f3c97218dd03.rmeta --extern unsigned_varint=/opt/rustwide/target/debug/deps/libunsigned_varint-f3c8197856429487.rmeta --cap-lints=warn --crate-version 0.4.0 --cfg ossl110` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "c6af7cb0b8883a2af9ea705b9e776216c8ae8be9dc4edf00f3e5a0738d6f4087", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6af7cb0b8883a2af9ea705b9e776216c8ae8be9dc4edf00f3e5a0738d6f4087", kill_on_drop: false }`
[INFO] [stdout] c6af7cb0b8883a2af9ea705b9e776216c8ae8be9dc4edf00f3e5a0738d6f4087