[INFO] fetching crate warnalyzer 0.1.0...
[INFO] documenting warnalyzer-0.1.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate warnalyzer 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate warnalyzer 0.1.0 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 warnalyzer 0.1.0
[INFO] finished tweaking crates.io crate warnalyzer 0.1.0
[INFO] tweaked toml for crates.io crate warnalyzer 0.1.0 written to /workspace/builds/worker-9/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] fddd544c3ec684e9efd487c2bfeaae3f3522249fff68e552623414a00ed16c21
[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" "fddd544c3ec684e9efd487c2bfeaae3f3522249fff68e552623414a00ed16c21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fddd544c3ec684e9efd487c2bfeaae3f3522249fff68e552623414a00ed16c21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fddd544c3ec684e9efd487c2bfeaae3f3522249fff68e552623414a00ed16c21", kill_on_drop: false }`
[INFO] [stdout] fddd544c3ec684e9efd487c2bfeaae3f3522249fff68e552623414a00ed16c21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] c3dce407f281d4382e644d5edaab1417635c56b2071e64065c1fcfe6371b2187
[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" "c3dce407f281d4382e644d5edaab1417635c56b2071e64065c1fcfe6371b2187", kill_on_drop: false }`
[INFO] [stderr]     Checking intervaltree v0.2.6
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]  Documenting warnalyzer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved imports `syn::visit`, `syn::visit`
[INFO] [stdout]   --> src/mute.rs:88:11
[INFO] [stdout]    |
[INFO] [stdout] 88 |     use syn::visit::{visit_item, self};
[INFO] [stdout]    |              ^^^^^               ^^^^ no `visit` in the root
[INFO] [stdout]    |              |
[INFO] [stdout]    |              could not find `visit` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `visit` in `syn`
[INFO] [stdout]    --> src/mute.rs:105:22
[INFO] [stdout]     |
[INFO] [stdout] 105 |     impl<'ast, 'a> syn::visit::Visit<'ast> for Visitor<'a> {
[INFO] [stdout]     |                         ^^^^^ could not find `visit` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `warnalyzer`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name warnalyzer src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern chashmap=/opt/rustwide/target/debug/deps/libchashmap-34fe8784fded4061.rmeta --extern intervaltree=/opt/rustwide/target/debug/deps/libintervaltree-504e7a5239abced0.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-958bf2a074a4960f.rmeta --extern pretty_env_logger=/opt/rustwide/target/debug/deps/libpretty_env_logger-c9621d10cc024932.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-abb8f1fb9c010469.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-f3871106bff3dfa4.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-de526c2f95fb2c08.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-3cc4975c0cfd1501.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-8b3d18030110cb03.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "c3dce407f281d4382e644d5edaab1417635c56b2071e64065c1fcfe6371b2187", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3dce407f281d4382e644d5edaab1417635c56b2071e64065c1fcfe6371b2187", kill_on_drop: false }`
[INFO] [stdout] c3dce407f281d4382e644d5edaab1417635c56b2071e64065c1fcfe6371b2187