[INFO] fetching crate piqel 0.202107.4...
[INFO] documenting piqel-0.202107.4 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate piqel 0.202107.4 into /workspace/builds/worker-95/source
[INFO] validating manifest of crates.io crate piqel 0.202107.4 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] removed /workspace/builds/worker-95/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate piqel 0.202107.4
[INFO] finished tweaking crates.io crate piqel 0.202107.4
[INFO] tweaked toml for crates.io crate piqel 0.202107.4 written to /workspace/builds/worker-95/source/Cargo.toml
[INFO] crate crates.io crate piqel 0.202107.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structmeta-derive v0.1.3
[INFO] [stderr]   Downloaded structmeta v0.1.3
[INFO] [stderr]   Downloaded collect-mac v0.1.0
[INFO] [stderr]   Downloaded ordered-float v2.6.0
[INFO] [stderr]   Downloaded parse-display-derive v0.5.0
[INFO] [stderr]   Downloaded parse-display v0.5.0
[INFO] [stderr]   Downloaded serde_partiql v1.1.64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/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] 3c7529a36171451fffc78994c09c1f4d7cef58267e33d1541f82b48b49dc272e
[INFO] running `Command { std: "docker" "start" "-a" "3c7529a36171451fffc78994c09c1f4d7cef58267e33d1541f82b48b49dc272e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c7529a36171451fffc78994c09c1f4d7cef58267e33d1541f82b48b49dc272e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c7529a36171451fffc78994c09c1f4d7cef58267e33d1541f82b48b49dc272e", kill_on_drop: false }`
[INFO] [stdout] 3c7529a36171451fffc78994c09c1f4d7cef58267e33d1541f82b48b49dc272e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/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] d75f8a97de9499e1ee949425aa9b534fb38fb2727f235a00df61db9f7f9f951e
[INFO] running `Command { std: "docker" "start" "-a" "d75f8a97de9499e1ee949425aa9b534fb38fb2727f235a00df61db9f7f9f951e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]    Compiling serde_partiql v1.1.64
[INFO] [stderr]    Compiling anyhow v1.0.41
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking collect-mac v0.1.0
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]     Checking bitvec v0.19.5
[INFO] [stderr]     Checking ordered-float v2.6.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking quick-xml v0.22.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]    Compiling structmeta-derive v0.1.3
[INFO] [stderr]    Compiling structmeta v0.1.3
[INFO] [stderr]    Compiling parse-display-derive v0.5.0
[INFO] [stderr]     Checking parse-display v0.5.0
[INFO] [stderr]  Documenting piqel v0.202107.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib/mod.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `piqel`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name piqel src/lib/mod.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-53da55f2f9963cdd.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-484c17f711956f8c.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-3ca7f86708c39a4c.rmeta --extern collect_mac=/opt/rustwide/target/debug/deps/libcollect_mac-526ef688a7d1203f.rmeta --extern indexmap=/opt/rustwide/target/debug/deps/libindexmap-ea9a4e42aa31ab21.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-74a9ecb2cbac341a.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-34f62c0a4eb9f470.rmeta --extern ordered_float=/opt/rustwide/target/debug/deps/libordered_float-0f075a5bedf27677.rmeta --extern parse_display=/opt/rustwide/target/debug/deps/libparse_display-376de81f8d2397d7.rmeta --extern quick_xml=/opt/rustwide/target/debug/deps/libquick_xml-66498645bf3769e9.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-aa674a887f186a8c.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-268c382c725a0948.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-3fc96ac4626c5688.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-0857f170873c1aa6.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-38fdd28993873645.rmeta --extern serde_partiql=/opt/rustwide/target/debug/deps/libserde_partiql-5c4e90f194789fa7.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-6a605fed3333b938.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-a87808a39876a70f.rmeta --cap-lints=warn --crate-version 0.202107.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d75f8a97de9499e1ee949425aa9b534fb38fb2727f235a00df61db9f7f9f951e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d75f8a97de9499e1ee949425aa9b534fb38fb2727f235a00df61db9f7f9f951e", kill_on_drop: false }`
[INFO] [stdout] d75f8a97de9499e1ee949425aa9b534fb38fb2727f235a00df61db9f7f9f951e
