[INFO] fetching crate spine-data 0.2.2...
[INFO] documenting spine-data-0.2.2 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate spine-data 0.2.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate spine-data 0.2.2 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate spine-data 0.2.2
[INFO] finished tweaking crates.io crate spine-data 0.2.2
[INFO] tweaked toml for crates.io crate spine-data 0.2.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2697243aed8f00a69ae40d1bc149c4879e5b3eaf0b70b676572e028bc41d091b
[INFO] running `Command { std: "docker" "start" "-a" "2697243aed8f00a69ae40d1bc149c4879e5b3eaf0b70b676572e028bc41d091b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2697243aed8f00a69ae40d1bc149c4879e5b3eaf0b70b676572e028bc41d091b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2697243aed8f00a69ae40d1bc149c4879e5b3eaf0b70b676572e028bc41d091b", kill_on_drop: false }`
[INFO] [stdout] 2697243aed8f00a69ae40d1bc149c4879e5b3eaf0b70b676572e028bc41d091b
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca9677b46ea9c4d5b5f3096e809c3a9fb75f8193dca60a3b54e079a2df8d4bfa
[INFO] running `Command { std: "docker" "start" "-a" "ca9677b46ea9c4d5b5f3096e809c3a9fb75f8193dca60a3b54e079a2df8d4bfa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]     Checking podio v0.1.7
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]     Checking backtrace v0.3.61
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking msdos_time v0.1.6
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking zip v0.2.8
[INFO] [stderr]  Documenting spine-data v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(custom_attribute)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![register_tool]` and `#![register_attr]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(custom_attribute)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `spine-data`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name spine_data src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern failure=/opt/rustwide/target/debug/deps/libfailure-25d8f19fa28294db.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-8b227829c70991dc.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-5678c1422d6b64cb.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-f282cc1f57f3d638.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-9010c99f689210cb.rmeta --extern zip=/opt/rustwide/target/debug/deps/libzip-d917fbb586581a8f.rmeta --cap-lints=warn --crate-version 0.2.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ca9677b46ea9c4d5b5f3096e809c3a9fb75f8193dca60a3b54e079a2df8d4bfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca9677b46ea9c4d5b5f3096e809c3a9fb75f8193dca60a3b54e079a2df8d4bfa", kill_on_drop: false }`
[INFO] [stdout] ca9677b46ea9c4d5b5f3096e809c3a9fb75f8193dca60a3b54e079a2df8d4bfa
