[INFO] fetching crate dotenv_macros 0.10.0...
[INFO] documenting dotenv_macros-0.10.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate dotenv_macros 0.10.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate dotenv_macros 0.10.0 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 dotenv_macros 0.10.0
[INFO] finished tweaking crates.io crate dotenv_macros 0.10.0
[INFO] tweaked toml for crates.io crate dotenv_macros 0.10.0 written to /workspace/builds/worker-6/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-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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9236f25ef18c5da4c0bc1d45b8d7ab4472f5e982142e8ffd2291e1780101f739
[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" "9236f25ef18c5da4c0bc1d45b8d7ab4472f5e982142e8ffd2291e1780101f739", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9236f25ef18c5da4c0bc1d45b8d7ab4472f5e982142e8ffd2291e1780101f739", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9236f25ef18c5da4c0bc1d45b8d7ab4472f5e982142e8ffd2291e1780101f739", kill_on_drop: false }`
[INFO] [stdout] 9236f25ef18c5da4c0bc1d45b8d7ab4472f5e982142e8ffd2291e1780101f739
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9050d8a84bf84504c3297b4da0109a1593c98b7ba78263bb2fffe7b521d5eaa
[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" "b9050d8a84bf84504c3297b4da0109a1593c98b7ba78263bb2fffe7b521d5eaa", kill_on_drop: false }`
[INFO] [stderr]     Checking dotenv v0.8.0
[INFO] [stderr]     Checking dotenv_codegen v0.10.0
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/dotenv_codegen-0.10.0/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 compile `dotenv_codegen`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "b9050d8a84bf84504c3297b4da0109a1593c98b7ba78263bb2fffe7b521d5eaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9050d8a84bf84504c3297b4da0109a1593c98b7ba78263bb2fffe7b521d5eaa", kill_on_drop: false }`
[INFO] [stdout] b9050d8a84bf84504c3297b4da0109a1593c98b7ba78263bb2fffe7b521d5eaa