[INFO] fetching crate subst 0.1.2...
[INFO] documenting subst-0.1.2 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate subst 0.1.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate subst 0.1.2 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate subst 0.1.2
[INFO] finished tweaking crates.io crate subst 0.1.2
[INFO] tweaked toml for crates.io crate subst 0.1.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--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-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "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] 717ebee22bd1e4db691babcc1585539caf95cf1605fdcd0e4a8426274ad5e8e4
[INFO] running `Command { std: "docker" "start" "-a" "717ebee22bd1e4db691babcc1585539caf95cf1605fdcd0e4a8426274ad5e8e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "717ebee22bd1e4db691babcc1585539caf95cf1605fdcd0e4a8426274ad5e8e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "717ebee22bd1e4db691babcc1585539caf95cf1605fdcd0e4a8426274ad5e8e4", kill_on_drop: false }`
[INFO] [stdout] 717ebee22bd1e4db691babcc1585539caf95cf1605fdcd0e4a8426274ad5e8e4
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "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] eb94b0ce019a14b8d77f53818db98e5f0350357617126cc72d02271f317f9120
[INFO] running `Command { std: "docker" "start" "-a" "eb94b0ce019a14b8d77f53818db98e5f0350357617126cc72d02271f317f9120", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]  Documenting subst v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `:default`
[INFO] [stdout]    --> src/lib.rs:200:52
[INFO] [stdout]     |
[INFO] [stdout] 200 | /// Parse a braced variable in the form of "${name[:default]} from source at the given position.
[INFO] [stdout]     |                                                    ^^^^^^^^ no item named `:default` 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 2.31s
[INFO] running `Command { std: "docker" "inspect" "eb94b0ce019a14b8d77f53818db98e5f0350357617126cc72d02271f317f9120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb94b0ce019a14b8d77f53818db98e5f0350357617126cc72d02271f317f9120", kill_on_drop: false }`
[INFO] [stdout] eb94b0ce019a14b8d77f53818db98e5f0350357617126cc72d02271f317f9120
[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" "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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--all-features" "--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] 509cdadd821d3e42eed782152497157b4f9dda3415bdf142ac8e0e6333e381a6
[INFO] running `Command { std: "docker" "start" "-a" "509cdadd821d3e42eed782152497157b4f9dda3415bdf142ac8e0e6333e381a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking serde v1.0.137
[INFO] [stderr]     Checking serde_yaml v0.8.24
[INFO] [stderr]  Documenting subst v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `:default`
[INFO] [stdout]    --> src/lib.rs:200:52
[INFO] [stdout]     |
[INFO] [stdout] 200 | /// Parse a braced variable in the form of "${name[:default]} from source at the given position.
[INFO] [stdout]     |                                                    ^^^^^^^^ no item named `:default` 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 37.73s
[INFO] running `Command { std: "docker" "inspect" "509cdadd821d3e42eed782152497157b4f9dda3415bdf142ac8e0e6333e381a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "509cdadd821d3e42eed782152497157b4f9dda3415bdf142ac8e0e6333e381a6", kill_on_drop: false }`
[INFO] [stdout] 509cdadd821d3e42eed782152497157b4f9dda3415bdf142ac8e0e6333e381a6