[INFO] fetching crate reql-macros 0.0.19...
[INFO] documenting reql-macros-0.0.19 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate reql-macros 0.0.19 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate reql-macros 0.0.19 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 reql-macros 0.0.19
[INFO] finished tweaking crates.io crate reql-macros 0.0.19
[INFO] tweaked toml for crates.io crate reql-macros 0.0.19 written to /workspace/builds/worker-6/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 derive-error v0.0.4
[INFO] [stderr]   Downloaded reql-types v0.0.4
[INFO] [stderr]   Downloaded tokio-async-await v0.1.7
[INFO] [stderr]   Downloaded tokio v0.1.19
[INFO] [stderr]   Downloaded protobuf v1.5.1
[INFO] [stderr]   Downloaded scram v0.4.0
[INFO] [stderr]   Downloaded reql-types v0.0.3
[INFO] [stderr]   Downloaded ql2 v1.1.2
[INFO] [stderr]   Downloaded reql v0.0.23
[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] e3accf44a7760b7acdc64ac983d832490bc08360616a83b8fc69a8c1bfa2656a
[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" "e3accf44a7760b7acdc64ac983d832490bc08360616a83b8fc69a8c1bfa2656a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3accf44a7760b7acdc64ac983d832490bc08360616a83b8fc69a8c1bfa2656a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3accf44a7760b7acdc64ac983d832490bc08360616a83b8fc69a8c1bfa2656a", kill_on_drop: false }`
[INFO] [stdout] e3accf44a7760b7acdc64ac983d832490bc08360616a83b8fc69a8c1bfa2656a
[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] a42035e381cd82470321c187e74d8a6d16d207418eeb2faebaba4fccd6438f9c
[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" "a42035e381cd82470321c187e74d8a6d16d207418eeb2faebaba4fccd6438f9c", kill_on_drop: false }`
[INFO] [stderr]     Checking proc-macro2 v0.4.30
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking syn v0.14.9
[INFO] [stderr]  Documenting reql-macros v0.0.19 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro_diagnostic)]
[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 `reql-macros`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type proc-macro --crate-name reql_macros 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 proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-169dbf71a6d15d9d.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-625b204cd4f6623d.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-3bb06df7c0fc5de4.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.0.19` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "a42035e381cd82470321c187e74d8a6d16d207418eeb2faebaba4fccd6438f9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a42035e381cd82470321c187e74d8a6d16d207418eeb2faebaba4fccd6438f9c", kill_on_drop: false }`
[INFO] [stdout] a42035e381cd82470321c187e74d8a6d16d207418eeb2faebaba4fccd6438f9c