[INFO] fetching crate peg-syntax-ext 0.5.7...
[INFO] documenting peg-syntax-ext-0.5.7 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate peg-syntax-ext 0.5.7 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate peg-syntax-ext 0.5.7 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 peg-syntax-ext 0.5.7
[INFO] finished tweaking crates.io crate peg-syntax-ext 0.5.7
[INFO] tweaked toml for crates.io crate peg-syntax-ext 0.5.7 written to /workspace/builds/worker-3/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] [stderr]     Blocking waiting for file lock on package cache
[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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 14e0cfa4f3074521e851d97d08038678cd39d1652a2c805b7b915e5d4c81539a
[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" "14e0cfa4f3074521e851d97d08038678cd39d1652a2c805b7b915e5d4c81539a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14e0cfa4f3074521e851d97d08038678cd39d1652a2c805b7b915e5d4c81539a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14e0cfa4f3074521e851d97d08038678cd39d1652a2c805b7b915e5d4c81539a", kill_on_drop: false }`
[INFO] [stdout] 14e0cfa4f3074521e851d97d08038678cd39d1652a2c805b7b915e5d4c81539a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] e7a54803be0a7da3a7f611967f99d9f53f14837c59201f3fa79565bb5f4ae1d6
[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" "e7a54803be0a7da3a7f611967f99d9f53f14837c59201f3fa79565bb5f4ae1d6", kill_on_drop: false }`
[INFO] [stderr]     Checking peg v0.5.7
[INFO] [stderr]  Documenting peg-syntax-ext v0.5.7 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `rustc_plugin`
[INFO] [stdout]  --> lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rustc_plugin;
[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 `peg-syntax-ext`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type dylib --crate-name peg_syntax_ext 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 peg=/opt/rustwide/target/debug/deps/libpeg-5c701b4cf73b6fe8.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "e7a54803be0a7da3a7f611967f99d9f53f14837c59201f3fa79565bb5f4ae1d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7a54803be0a7da3a7f611967f99d9f53f14837c59201f3fa79565bb5f4ae1d6", kill_on_drop: false }`
[INFO] [stdout] e7a54803be0a7da3a7f611967f99d9f53f14837c59201f3fa79565bb5f4ae1d6