[INFO] fetching crate cute_custom_default 2.2.0...
[INFO] documenting cute_custom_default-2.2.0 against 1.86.0 for beta-1.87-rustdoc-1
[INFO] extracting crate cute_custom_default 2.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate cute_custom_default 2.2.0 on toolchain 1.86.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.86.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cute_custom_default 2.2.0
[INFO] finished tweaking crates.io crate cute_custom_default 2.2.0
[INFO] tweaked toml for crates.io crate cute_custom_default 2.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.86.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.86.0" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d7524f967e0679f43c88a4b799390c3eabb0eea1e6ae6a8bf8298d0bda9cec8
[INFO] running `Command { std: "docker" "start" "-a" "3d7524f967e0679f43c88a4b799390c3eabb0eea1e6ae6a8bf8298d0bda9cec8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d7524f967e0679f43c88a4b799390c3eabb0eea1e6ae6a8bf8298d0bda9cec8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d7524f967e0679f43c88a4b799390c3eabb0eea1e6ae6a8bf8298d0bda9cec8", kill_on_drop: false }`
[INFO] [stdout] 3d7524f967e0679f43c88a4b799390c3eabb0eea1e6ae6a8bf8298d0bda9cec8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 624b35dd99ad313fcdcf8fb31d14ffaed77085028d5c8f45b02d608c2e15c572
[INFO] running `Command { std: "docker" "start" "-a" "624b35dd99ad313fcdcf8fb31d14ffaed77085028d5c8f45b02d608c2e15c572", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking syn v2.0.100
[INFO] [stderr]  Documenting cute_custom_default v2.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.61s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/cute_custom_default/index.html
[INFO] running `Command { std: "docker" "inspect" "624b35dd99ad313fcdcf8fb31d14ffaed77085028d5c8f45b02d608c2e15c572", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "624b35dd99ad313fcdcf8fb31d14ffaed77085028d5c8f45b02d608c2e15c572", kill_on_drop: false }`
[INFO] [stdout] 624b35dd99ad313fcdcf8fb31d14ffaed77085028d5c8f45b02d608c2e15c572
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "rustdoc" "--lib" "-Zrustdoc-map" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8595d6dca7f0f3e5f7a13bc0c674f1b7721a425e4f9ba34ae665824625d9e819
[INFO] running `Command { std: "docker" "start" "-a" "8595d6dca7f0f3e5f7a13bc0c674f1b7721a425e4f9ba34ae665824625d9e819", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stdout] error[E0599]: no method named `file` found for reference `&proc_macro::Span` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.95/src/wrapper.rs:465:36
[INFO] [stdout]     |
[INFO] [stdout] 465 |             Span::Compiler(s) => s.file(),
[INFO] [stdout]     |                                    ^^^^ method not found in `&Span`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `local_file` found for reference `&proc_macro::Span` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.95/src/wrapper.rs:473:36
[INFO] [stdout]     |
[INFO] [stdout] 473 |             Span::Compiler(s) => s.local_file(),
[INFO] [stdout]     |                                    ^^^^^^^^^^ method not found in `&Span`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "8595d6dca7f0f3e5f7a13bc0c674f1b7721a425e4f9ba34ae665824625d9e819", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8595d6dca7f0f3e5f7a13bc0c674f1b7721a425e4f9ba34ae665824625d9e819", kill_on_drop: false }`
[INFO] [stdout] 8595d6dca7f0f3e5f7a13bc0c674f1b7721a425e4f9ba34ae665824625d9e819