[INFO] fetching crate reql-derive 0.0.10...
[INFO] documenting reql-derive-0.0.10 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate reql-derive 0.0.10 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate reql-derive 0.0.10 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 reql-derive 0.0.10
[INFO] finished tweaking crates.io crate reql-derive 0.0.10
[INFO] tweaked toml for crates.io crate reql-derive 0.0.10 written to /workspace/builds/worker-12/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] d7ad9f9f35853b499f91a6331b2adcf52f69ffc15e1e317f869eb634fa9b8de5
[INFO] running `Command { std: "docker" "start" "-a" "d7ad9f9f35853b499f91a6331b2adcf52f69ffc15e1e317f869eb634fa9b8de5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7ad9f9f35853b499f91a6331b2adcf52f69ffc15e1e317f869eb634fa9b8de5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7ad9f9f35853b499f91a6331b2adcf52f69ffc15e1e317f869eb634fa9b8de5", kill_on_drop: false }`
[INFO] [stdout] d7ad9f9f35853b499f91a6331b2adcf52f69ffc15e1e317f869eb634fa9b8de5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c3024af1fe080f9dfc82a4aa28e976f4229d76db58e2c835e5278c5f81a1c370
[INFO] running `Command { std: "docker" "start" "-a" "c3024af1fe080f9dfc82a4aa28e976f4229d76db58e2c835e5278c5f81a1c370", 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-derive v0.0.10 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro)]
[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-derive`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type proc-macro --crate-name reql_derive 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_macro2-42b9f02991aae0dd.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-7b5a76131bcd4c91.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-193622dec616dccd.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.0.10` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "c3024af1fe080f9dfc82a4aa28e976f4229d76db58e2c835e5278c5f81a1c370", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3024af1fe080f9dfc82a4aa28e976f4229d76db58e2c835e5278c5f81a1c370", kill_on_drop: false }`
[INFO] [stdout] c3024af1fe080f9dfc82a4aa28e976f4229d76db58e2c835e5278c5f81a1c370
