[INFO] fetching crate holochain_net 0.0.52-alpha2...
[INFO] documenting holochain_net-0.0.52-alpha2 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate holochain_net 0.0.52-alpha2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate holochain_net 0.0.52-alpha2 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate holochain_net 0.0.52-alpha2
[INFO] finished tweaking crates.io crate holochain_net 0.0.52-alpha2
[INFO] tweaked toml for crates.io crate holochain_net 0.0.52-alpha2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.47.0" "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] b4b74ddcde841c9cce231459ed44ecaf32bd1762276b6d032d09ab8ebd3205e6
[INFO] running `Command { std: "docker" "start" "-a" "b4b74ddcde841c9cce231459ed44ecaf32bd1762276b6d032d09ab8ebd3205e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4b74ddcde841c9cce231459ed44ecaf32bd1762276b6d032d09ab8ebd3205e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4b74ddcde841c9cce231459ed44ecaf32bd1762276b6d032d09ab8ebd3205e6", kill_on_drop: false }`
[INFO] [stdout] b4b74ddcde841c9cce231459ed44ecaf32bd1762276b6d032d09ab8ebd3205e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a94a24ccc4866a94ac56ff3516aaa4f1a5feacb1b64a368ee501befa4353e19
[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" "4a94a24ccc4866a94ac56ff3516aaa4f1a5feacb1b64a368ee501befa4353e19", kill_on_drop: false }`
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[INFO] [stderr]     Checking structopt v0.3.3
[INFO] [stderr]    Compiling tracing v0.1.13
[INFO] [stderr]     Checking rustracing_jaeger v0.2.1
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking futures-util v0.3.6
[INFO] [stderr]     Checking tracing-futures v0.2.2
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[INFO] [stderr]     Checking futures v0.3.5
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[INFO] [stderr]     Checking serde_json v1.0.47
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[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking tracing-serde v0.1.1
[INFO] [stderr]     Checking rmp-serde v0.13.7
[INFO] [stderr]     Checking url_serde v0.2.0
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[INFO] [stderr]     Checking tokio-codec v0.1.2
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[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking holochain_locksmith v0.0.52-alpha2
[INFO] [stderr]     Checking yasna v0.3.1
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking holochain_logging v0.0.7
[INFO] [stderr]     Checking tracing-subscriber v0.2.3
[INFO] [stderr]     Checking lib3h_p2p_protocol v0.0.42
[INFO] [stderr]     Checking jsonrpc-core v14.0.1
[INFO] [stderr]     Checking jsonrpc-lite v0.5.0
[INFO] [stderr]     Checking tokio v0.2.11
[INFO] [stderr]     Checking opentelemetry-jaeger v0.1.0
[INFO] [stderr]    Compiling http_req v0.2.1
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-signal v0.2.9
[INFO] [stderr]     Checking rcgen v0.8.0
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-process v0.2.5
[INFO] [stderr]    Compiling holochain_core_types v0.0.52-alpha2
[INFO] [stderr]     Checking in_stream v0.0.52-alpha2
[INFO] [stderr]    Compiling rust_sodium_holochain_fork-sys v0.10.4
[INFO] [stderr]    Compiling holochain_json_derive v0.0.23
[INFO] [stderr]     Checking holochain_tracing v0.0.24
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking lib3h_zombie_actor v0.0.42
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4a94a24ccc4866a94ac56ff3516aaa4f1a5feacb1b64a368ee501befa4353e19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a94a24ccc4866a94ac56ff3516aaa4f1a5feacb1b64a368ee501befa4353e19", kill_on_drop: false }`
[INFO] [stdout] 4a94a24ccc4866a94ac56ff3516aaa4f1a5feacb1b64a368ee501befa4353e19
