[INFO] fetching crate deluge-rpc 0.7.0...
[INFO] documenting deluge-rpc-0.7.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate deluge-rpc 0.7.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate deluge-rpc 0.7.0 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 deluge-rpc 0.7.0
[INFO] finished tweaking crates.io crate deluge-rpc 0.7.0
[INFO] tweaked toml for crates.io crate deluge-rpc 0.7.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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 enum-kinds v0.5.0
[INFO] [stderr]   Downloaded lazy-regex v0.1.4
[INFO] [stderr]   Downloaded deluge-rpc-macro v0.6.2
[INFO] [stderr]   Downloaded rencode v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] c6b6c6e76aff250b70835a4b408757f4b82036cbd9f33cb12f63271d4edcf2af
[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" "c6b6c6e76aff250b70835a4b408757f4b82036cbd9f33cb12f63271d4edcf2af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6b6c6e76aff250b70835a4b408757f4b82036cbd9f33cb12f63271d4edcf2af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6b6c6e76aff250b70835a4b408757f4b82036cbd9f33cb12f63271d4edcf2af", kill_on_drop: false }`
[INFO] [stdout] c6b6c6e76aff250b70835a4b408757f4b82036cbd9f33cb12f63271d4edcf2af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] e7a12a0bced73ed12598fb5aae481e888e51f471fc088e014f2bd09e7d52e845
[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" "e7a12a0bced73ed12598fb5aae481e888e51f471fc088e014f2bd09e7d52e845", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking lazy-regex v0.1.4
[INFO] [stderr]     Checking rustls v0.17.0
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling enum-kinds v0.5.0
[INFO] [stderr]    Compiling deluge-rpc-macro v0.6.2
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking ron v0.6.1
[INFO] [stderr]     Checking rencode v0.2.1
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking tokio-rustls v0.13.1
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling num_enum_derive v0.5.1
[INFO] [stderr]     Checking num_enum v0.5.1
[INFO] [stderr]  Documenting deluge-rpc v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(str_strip)] // sorry
[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] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `deluge-rpc`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name deluge_rpc src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern deluge_rpc_macro=/opt/rustwide/target/debug/deps/libdeluge_rpc_macro-cd7da3f101041e58.so --extern enum_kinds=/opt/rustwide/target/debug/deps/libenum_kinds-d157d1718d757992.so --extern fnv=/opt/rustwide/target/debug/deps/libfnv-0ff73feb7e2c43f7.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-8fbf8508233cae14.rmeta --extern lazy_regex=/opt/rustwide/target/debug/deps/liblazy_regex-9727ff7d4581085e.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-db88f49d9e5662e7.rmeta --extern libflate=/opt/rustwide/target/debug/deps/liblibflate-86e51e6495a789c2.rmeta --extern num_enum=/opt/rustwide/target/debug/deps/libnum_enum-1b594f72105d890d.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-c251ca4f1be2ef5d.rmeta --extern rencode=/opt/rustwide/target/debug/deps/librencode-b9533cb138aed3fe.rmeta --extern ron=/opt/rustwide/target/debug/deps/libron-081bdb6cf5b71891.rmeta --extern rustls=/opt/rustwide/target/debug/deps/librustls-93b9c0795b2969cf.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-199b613c8176b374.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-d504390495597f9a.rmeta --extern tokio_rustls=/opt/rustwide/target/debug/deps/libtokio_rustls-3e89155ad9adc895.rmeta --cap-lints=warn --crate-version 0.7.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "e7a12a0bced73ed12598fb5aae481e888e51f471fc088e014f2bd09e7d52e845", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7a12a0bced73ed12598fb5aae481e888e51f471fc088e014f2bd09e7d52e845", kill_on_drop: false }`
[INFO] [stdout] e7a12a0bced73ed12598fb5aae481e888e51f471fc088e014f2bd09e7d52e845