[INFO] fetching crate deepsize 0.1.2...
[INFO] documenting deepsize-0.1.2 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate deepsize 0.1.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate deepsize 0.1.2 on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate deepsize 0.1.2
[INFO] finished tweaking crates.io crate deepsize 0.1.2
[INFO] tweaked toml for crates.io crate deepsize 0.1.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ce8092ef0e46b9d19873b33f7365fcbe33c55eda721441257a5223e314a9a3a
[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" "4ce8092ef0e46b9d19873b33f7365fcbe33c55eda721441257a5223e314a9a3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ce8092ef0e46b9d19873b33f7365fcbe33c55eda721441257a5223e314a9a3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ce8092ef0e46b9d19873b33f7365fcbe33c55eda721441257a5223e314a9a3a", kill_on_drop: false }`
[INFO] [stdout] 4ce8092ef0e46b9d19873b33f7365fcbe33c55eda721441257a5223e314a9a3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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] 9f1f03ea139b0a9d1b759295cc6ddb38593d3d0f116088ff568e2668e35dc82e
[INFO] running `Command { std: "docker" "start" "-a" "9f1f03ea139b0a9d1b759295cc6ddb38593d3d0f116088ff568e2668e35dc82e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling deepsize_derive v0.1.1
[INFO] [stderr]  Documenting deepsize v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `[known_size_of]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:108:89
[INFO] [stdout]     |
[INFO] [stdout] 108 |     /// children.  There is a shortcut macro for this implementation, [`known_size_of`](known_size_of),
[INFO] [stdout]     |                                                                                         ^^^^^^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(intra_doc_link_resolution_failure)]` on by default
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[std::reference]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:205:30
[INFO] [stdout]     |
[INFO] [stdout] 205 |     /// Adds a [`reference`](std::reference) to the list of visited [`reference`](std::reference)s
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[std::reference]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:205:83
[INFO] [stdout]     |
[INFO] [stdout] 205 |     /// Adds a [`reference`](std::reference) to the list of visited [`reference`](std::reference)s
[INFO] [stdout]     |                                                                                   ^^^^^^^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[std::reference]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:211:35
[INFO] [stdout]     |
[INFO] [stdout] 211 |     /// Checks if a [`reference`](std::reference) is in the list of visited [`reference`](std::reference)s
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[std::reference]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:211:91
[INFO] [stdout]     |
[INFO] [stdout] 211 |     /// Checks if a [`reference`](std::reference) is in the list of visited [`reference`](std::reference)s
[INFO] [stdout]     |                                                                                           ^^^^^^^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.20s
[INFO] running `Command { std: "docker" "inspect" "9f1f03ea139b0a9d1b759295cc6ddb38593d3d0f116088ff568e2668e35dc82e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f1f03ea139b0a9d1b759295cc6ddb38593d3d0f116088ff568e2668e35dc82e", kill_on_drop: false }`
[INFO] [stdout] 9f1f03ea139b0a9d1b759295cc6ddb38593d3d0f116088ff568e2668e35dc82e