[INFO] fetching crate holochain_persistence_api 0.0.18...
[INFO] documenting holochain_persistence_api-0.0.18 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate holochain_persistence_api 0.0.18 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate holochain_persistence_api 0.0.18 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate holochain_persistence_api 0.0.18
[INFO] finished tweaking crates.io crate holochain_persistence_api 0.0.18
[INFO] tweaked toml for crates.io crate holochain_persistence_api 0.0.18 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9a2640b444342d7c2b05437d5ee824856441ef3d1db88d902c5a38a21ba6bbf4
[INFO] running `Command { std: "docker" "start" "-a" "9a2640b444342d7c2b05437d5ee824856441ef3d1db88d902c5a38a21ba6bbf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a2640b444342d7c2b05437d5ee824856441ef3d1db88d902c5a38a21ba6bbf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a2640b444342d7c2b05437d5ee824856441ef3d1db88d902c5a38a21ba6bbf4", kill_on_drop: false }`
[INFO] [stdout] 9a2640b444342d7c2b05437d5ee824856441ef3d1db88d902c5a38a21ba6bbf4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cfd90ad46a0cd337b846c07b442f170aa8ade3f791521d5eccb2e5d3bd25ed17
[INFO] running `Command { std: "docker" "start" "-a" "cfd90ad46a0cd337b846c07b442f170aa8ade3f791521d5eccb2e5d3bd25ed17", kill_on_drop: false }`
[INFO] [stderr]    Compiling holochain_persistence_api v0.0.18 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.47
[INFO] [stderr]    Compiling holochain_json_derive v0.0.23
[INFO] [stderr]     Checking holochain_json_api v0.0.23
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/holochain_json_api-0.0.23/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/holochain_json_api-0.0.23/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(never_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `holochain_json_api`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "cfd90ad46a0cd337b846c07b442f170aa8ade3f791521d5eccb2e5d3bd25ed17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfd90ad46a0cd337b846c07b442f170aa8ade3f791521d5eccb2e5d3bd25ed17", kill_on_drop: false }`
[INFO] [stdout] cfd90ad46a0cd337b846c07b442f170aa8ade3f791521d5eccb2e5d3bd25ed17