[INFO] fetching crate libipld-json 0.4.0...
[INFO] documenting libipld-json-0.4.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate libipld-json 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate libipld-json 0.4.0 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 libipld-json 0.4.0
[INFO] finished tweaking crates.io crate libipld-json 0.4.0
[INFO] tweaked toml for crates.io crate libipld-json 0.4.0 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] [stderr]     Blocking waiting for file lock on package cache
[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] ced7c453289241dab85bdc35b174cdb8c77b3d383dedfb05091217ba391a676a
[INFO] running `Command { std: "docker" "start" "-a" "ced7c453289241dab85bdc35b174cdb8c77b3d383dedfb05091217ba391a676a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ced7c453289241dab85bdc35b174cdb8c77b3d383dedfb05091217ba391a676a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ced7c453289241dab85bdc35b174cdb8c77b3d383dedfb05091217ba391a676a", kill_on_drop: false }`
[INFO] [stdout] ced7c453289241dab85bdc35b174cdb8c77b3d383dedfb05091217ba391a676a
[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] 56782eaf8fa0ee287cd754da3940d1362913e787adc1adbbf3300fd25d09fdea
[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" "56782eaf8fa0ee287cd754da3940d1362913e787adc1adbbf3300fd25d09fdea", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]    Compiling data-encoding v2.3.0
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]     Checking subtle v2.2.3
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]     Checking unsigned-varint v0.5.0
[INFO] [stderr]     Checking base-x v0.2.6
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking blake2b_simd v0.5.10
[INFO] [stderr]     Checking blake2s_simd v0.5.10
[INFO] [stderr]     Checking strobe-rs v0.5.4
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha-1 v0.9.1
[INFO] [stderr]     Checking sha2 v0.9.1
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling data-encoding-macro-internal v0.1.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]     Checking data-encoding-macro v0.1.8
[INFO] [stderr]     Checking multibase v0.8.0
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling parity-scale-codec-derive v1.2.1
[INFO] [stderr]    Compiling tiny-multihash-derive v0.4.0
[INFO] [stderr]     Checking parity-scale-codec v1.3.4
[INFO] [stderr]     Checking tiny-multihash v0.4.5
[INFO] [stderr]     Checking tiny-cid v0.2.5
[INFO] [stderr]     Checking libipld-core v0.4.0
[INFO] [stderr]  Documenting libipld-json v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 16s
[INFO] running `Command { std: "docker" "inspect" "56782eaf8fa0ee287cd754da3940d1362913e787adc1adbbf3300fd25d09fdea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56782eaf8fa0ee287cd754da3940d1362913e787adc1adbbf3300fd25d09fdea", kill_on_drop: false }`
[INFO] [stdout] 56782eaf8fa0ee287cd754da3940d1362913e787adc1adbbf3300fd25d09fdea