[INFO] fetching crate undither 1.0.5...
[INFO] documenting undither-1.0.5 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate undither 1.0.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate undither 1.0.5 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 undither 1.0.5
[INFO] finished tweaking crates.io crate undither 1.0.5
[INFO] tweaked toml for crates.io crate undither 1.0.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate undither 1.0.5 already has a lockfile, it will not be regenerated
[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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 33e4e99e041d6d03778efa2feecab7ce5acddaf84824285998aac662b5e20652
[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" "33e4e99e041d6d03778efa2feecab7ce5acddaf84824285998aac662b5e20652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33e4e99e041d6d03778efa2feecab7ce5acddaf84824285998aac662b5e20652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33e4e99e041d6d03778efa2feecab7ce5acddaf84824285998aac662b5e20652", kill_on_drop: false }`
[INFO] [stdout] 33e4e99e041d6d03778efa2feecab7ce5acddaf84824285998aac662b5e20652
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 5f0437c980933d1234bfa44f385f69a1477864a3aaf8a2449cc07cb3e2b97aa1
[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" "5f0437c980933d1234bfa44f385f69a1477864a3aaf8a2449cc07cb3e2b97aa1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking imgref v1.6.1
[INFO] [stderr]     Checking rgb v0.8.20
[INFO] [stderr]     Checking vpsearch v2.0.1
[INFO] [stderr]     Checking loop9 v0.1.1
[INFO] [stderr]  Documenting undither v1.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.23s
[INFO] running `Command { std: "docker" "inspect" "5f0437c980933d1234bfa44f385f69a1477864a3aaf8a2449cc07cb3e2b97aa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f0437c980933d1234bfa44f385f69a1477864a3aaf8a2449cc07cb3e2b97aa1", kill_on_drop: false }`
[INFO] [stdout] 5f0437c980933d1234bfa44f385f69a1477864a3aaf8a2449cc07cb3e2b97aa1