[INFO] fetching crate rand_macros 0.1.10...
[INFO] documenting rand_macros-0.1.10 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate rand_macros 0.1.10 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rand_macros 0.1.10 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 rand_macros 0.1.10
[INFO] removed path dependency rand from crates.io crate rand_macros 0.1.10
[INFO] finished tweaking crates.io crate rand_macros 0.1.10
[INFO] tweaked toml for crates.io crate rand_macros 0.1.10 written to /workspace/builds/worker-8/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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4c828833ff42fd9676a2cdbddd7ecfdeccf01bf3296a1804b36ca6938412dd85
[INFO] running `Command { std: "docker" "start" "-a" "4c828833ff42fd9676a2cdbddd7ecfdeccf01bf3296a1804b36ca6938412dd85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c828833ff42fd9676a2cdbddd7ecfdeccf01bf3296a1804b36ca6938412dd85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c828833ff42fd9676a2cdbddd7ecfdeccf01bf3296a1804b36ca6938412dd85", kill_on_drop: false }`
[INFO] [stdout] 4c828833ff42fd9676a2cdbddd7ecfdeccf01bf3296a1804b36ca6938412dd85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 88d6d278ad89f32f732b6b289d4a8af4c5ce36612b48c529d32ecb7236933454
[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" "88d6d278ad89f32f732b6b289d4a8af4c5ce36612b48c529d32ecb7236933454", kill_on_drop: false }`
[INFO] [stderr]  Documenting rand_macros v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `rand_macros`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type dylib --crate-name rand_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 --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "88d6d278ad89f32f732b6b289d4a8af4c5ce36612b48c529d32ecb7236933454", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88d6d278ad89f32f732b6b289d4a8af4c5ce36612b48c529d32ecb7236933454", kill_on_drop: false }`
[INFO] [stdout] 88d6d278ad89f32f732b6b289d4a8af4c5ce36612b48c529d32ecb7236933454