[INFO] fetching crate subparse 0.7.0...
[INFO] documenting subparse-0.7.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate subparse 0.7.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate subparse 0.7.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate subparse 0.7.0
[INFO] finished tweaking crates.io crate subparse 0.7.0
[INFO] tweaked toml for crates.io crate subparse 0.7.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate subparse 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cast v0.2.2
[INFO] [stderr]   Downloaded cc v1.0.45
[INFO] [stderr]   Downloaded backtrace v0.3.38
[INFO] [stderr]   Downloaded itertools v0.8.0
[INFO] [stderr]   Downloaded ucd-util v0.1.5
[INFO] [stderr]   Downloaded backtrace-sys v0.1.31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] 97eaf007f5e857c9b23cdd4b7245d344cd6e0c43b6e452d9f2d6c3e6d02a748f
[INFO] running `Command { std: "docker" "start" "-a" "97eaf007f5e857c9b23cdd4b7245d344cd6e0c43b6e452d9f2d6c3e6d02a748f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97eaf007f5e857c9b23cdd4b7245d344cd6e0c43b6e452d9f2d6c3e6d02a748f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97eaf007f5e857c9b23cdd4b7245d344cd6e0c43b6e452d9f2d6c3e6d02a748f", kill_on_drop: false }`
[INFO] [stdout] 97eaf007f5e857c9b23cdd4b7245d344cd6e0c43b6e452d9f2d6c3e6d02a748f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] d23bb286e6ef344bf8ebb27689b167e84c7c706488157b98f741724e22d5753d
[INFO] running `Command { std: "docker" "start" "-a" "d23bb286e6ef344bf8ebb27689b167e84c7c706488157b98f741724e22d5753d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking ucd-util v0.1.5
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking nom v2.1.0
[INFO] [stderr]     Checking ascii v0.7.1
[INFO] [stderr]     Checking chardet v0.2.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking encoding_rs v0.8.28
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]     Checking combine v2.5.2
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking backtrace v0.3.38
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking image v0.13.0
[INFO] [stderr]     Checking vobsub v0.2.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]  Documenting subparse v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `cause`
[INFO] [stdout]   --> src/formats/vobsub.rs:23:76
[INFO] [stdout]    |
[INFO] [stdout] 23 |         /// Since `vobsub::Error` does not implement Sync. We cannot use #[cause] for it.
[INFO] [stdout]    |                                                                            ^^^^^ no item named `cause` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.67s
[INFO] running `Command { std: "docker" "inspect" "d23bb286e6ef344bf8ebb27689b167e84c7c706488157b98f741724e22d5753d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d23bb286e6ef344bf8ebb27689b167e84c7c706488157b98f741724e22d5753d", kill_on_drop: false }`
[INFO] [stdout] d23bb286e6ef344bf8ebb27689b167e84c7c706488157b98f741724e22d5753d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", 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] 7422b2d83d38e81506e1fa6658587d77e8fc2572034b09e14f02f1f66c255088
[INFO] running `Command { std: "docker" "start" "-a" "7422b2d83d38e81506e1fa6658587d77e8fc2572034b09e14f02f1f66c255088", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking ucd-util v0.1.5
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking ascii v0.7.1
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking nom v2.1.0
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking chardet v0.2.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking combine v2.5.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking backtrace v0.3.38
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking image v0.13.0
[INFO] [stderr]     Checking vobsub v0.2.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]  Documenting subparse v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `cause`
[INFO] [stdout]   --> src/formats/vobsub.rs:23:76
[INFO] [stdout]    |
[INFO] [stdout] 23 |         /// Since `vobsub::Error` does not implement Sync. We cannot use #[cause] for it.
[INFO] [stdout]    |                                                                            ^^^^^ no item named `cause` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.29s
[INFO] running `Command { std: "docker" "inspect" "7422b2d83d38e81506e1fa6658587d77e8fc2572034b09e14f02f1f66c255088", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7422b2d83d38e81506e1fa6658587d77e8fc2572034b09e14f02f1f66c255088", kill_on_drop: false }`
[INFO] [stdout] 7422b2d83d38e81506e1fa6658587d77e8fc2572034b09e14f02f1f66c255088