[INFO] fetching crate infer_schema_internals 1.4.0...
[INFO] documenting infer_schema_internals-1.4.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate infer_schema_internals 1.4.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate infer_schema_internals 1.4.0 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 infer_schema_internals 1.4.0
[INFO] finished tweaking crates.io crate infer_schema_internals 1.4.0
[INFO] tweaked toml for crates.io crate infer_schema_internals 1.4.0 written to /workspace/builds/worker-2/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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stdout] 55a7a1a13be39e97aa517c830aa38d25627bd17c3b6ad95a34cf1b6eecadd86d
[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" "55a7a1a13be39e97aa517c830aa38d25627bd17c3b6ad95a34cf1b6eecadd86d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55a7a1a13be39e97aa517c830aa38d25627bd17c3b6ad95a34cf1b6eecadd86d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55a7a1a13be39e97aa517c830aa38d25627bd17c3b6ad95a34cf1b6eecadd86d", kill_on_drop: false }`
[INFO] [stdout] 55a7a1a13be39e97aa517c830aa38d25627bd17c3b6ad95a34cf1b6eecadd86d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stdout] 06cf18b78fbfc0dd63a96baa23c9ca8ecf248a5ff86ba86ea39903fb857111b1
[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" "06cf18b78fbfc0dd63a96baa23c9ca8ecf248a5ff86ba86ea39903fb857111b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]     Checking diesel v1.4.5
[INFO] [stderr]  Documenting infer_schema_internals v1.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: At least one backend must be specified for use with this crate.
[INFO] [stdout]  In Cargo.toml, please specify `features = ["postgresql"]`, `features = ["mysql"]`, or `features = ["sqlite"]`
[INFO] [stdout] 
[INFO] [stdout]  ex. `infer_schema_internals { features = ["postgres"] }`
[INFO] [stdout]  
[INFO] [stdout]   --> src/inference.rs:70:14
[INFO] [stdout]    |
[INFO] [stdout] 70 |           _ => compile_error!(
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 71 | |             "At least one backend must be specified for use with this crate.\n \
[INFO] [stdout] 72 | |              In Cargo.toml, please specify `features = [\"postgresql\"]`, \
[INFO] [stdout] 73 | |              `features = [\"mysql\"]`, or `features = [\"sqlite\"]`\n\n \
[INFO] [stdout] 74 | |              ex. `infer_schema_internals { features = [\"postgres\"] }`\n "
[INFO] [stdout] 75 | |         ),
[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] [stderr] error: Could not document `infer_schema_internals`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name infer_schema_internals src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern diesel=/opt/rustwide/target/debug/deps/libdiesel-5fbd0a62ee68f8e3.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "06cf18b78fbfc0dd63a96baa23c9ca8ecf248a5ff86ba86ea39903fb857111b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06cf18b78fbfc0dd63a96baa23c9ca8ecf248a5ff86ba86ea39903fb857111b1", kill_on_drop: false }`
[INFO] [stdout] 06cf18b78fbfc0dd63a96baa23c9ca8ecf248a5ff86ba86ea39903fb857111b1