[INFO] fetching crate pebble 0.8.5...
[INFO] documenting pebble-0.8.5 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate pebble 0.8.5 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate pebble 0.8.5 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pebble 0.8.5
[INFO] finished tweaking crates.io crate pebble 0.8.5
[INFO] tweaked toml for crates.io crate pebble 0.8.5 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lzf v0.3.2
[INFO] [stderr]   Downloaded recipe-reader v0.9.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6dfc03b2c90123355df98e2a5bd70ec4b3bb8c9d7a63439fca0e0e60a8e1428f
[INFO] running `Command { std: "docker" "start" "-a" "6dfc03b2c90123355df98e2a5bd70ec4b3bb8c9d7a63439fca0e0e60a8e1428f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6dfc03b2c90123355df98e2a5bd70ec4b3bb8c9d7a63439fca0e0e60a8e1428f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dfc03b2c90123355df98e2a5bd70ec4b3bb8c9d7a63439fca0e0e60a8e1428f", kill_on_drop: false }`
[INFO] [stdout] 6dfc03b2c90123355df98e2a5bd70ec4b3bb8c9d7a63439fca0e0e60a8e1428f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 265627fa8ae3ee62f3a6ee9ab556c05e1f1ad06dbbb27c4bb48c61d90b632bc8
[INFO] running `Command { std: "docker" "start" "-a" "265627fa8ae3ee62f3a6ee9ab556c05e1f1ad06dbbb27c4bb48c61d90b632bc8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]     Checking lzf v0.3.2
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking recipe-reader v0.9.11
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]  Documenting pebble v0.8.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_remove_item)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `vec_remove_item`
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_remove_item)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `pebble`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --crate-type bin --crate-name pebble src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=1f98a431e20880cc -L dependency=/opt/rustwide/target/debug/deps --extern ansi_term=/opt/rustwide/target/debug/deps/libansi_term-6bda3700a7fdab25.rmeta --extern lzf=/opt/rustwide/target/debug/deps/liblzf-22c819d3a332d66c.rmeta --extern recipe_reader=/opt/rustwide/target/debug/deps/librecipe_reader-357f0763af3017af.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-d959715fe86d3f0d.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-d2ced8b4540a43b2.so --extern toml=/opt/rustwide/target/debug/deps/libtoml-c9cfb73ac1b52ec4.rmeta --cap-lints=warn --crate-version 0.8.5` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "265627fa8ae3ee62f3a6ee9ab556c05e1f1ad06dbbb27c4bb48c61d90b632bc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "265627fa8ae3ee62f3a6ee9ab556c05e1f1ad06dbbb27c4bb48c61d90b632bc8", kill_on_drop: false }`
[INFO] [stdout] 265627fa8ae3ee62f3a6ee9ab556c05e1f1ad06dbbb27c4bb48c61d90b632bc8
