[INFO] fetching crate ezel 0.0.1...
[INFO] documenting ezel-0.0.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate ezel 0.0.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate ezel 0.0.1 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-13/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate ezel 0.0.1
[INFO] finished tweaking crates.io crate ezel 0.0.1
[INFO] tweaked toml for crates.io crate ezel 0.0.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate ezel 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded simdutf8 v0.1.3
[INFO] [stderr]   Downloaded polars-utils v0.20.0
[INFO] [stderr]   Downloaded polars-lazy v0.20.0
[INFO] [stderr]   Downloaded polars-io v0.20.0
[INFO] [stderr]   Downloaded piet-web v0.5.0
[INFO] [stderr]   Downloaded piet-common v0.5.0
[INFO] [stderr]   Downloaded associative-cache v1.0.1
[INFO] [stderr]   Downloaded utf16_lit v2.0.2
[INFO] [stderr]   Downloaded piet-cairo v0.5.0
[INFO] [stderr]   Downloaded polars-arrow v0.20.0
[INFO] [stderr]   Downloaded polars v0.20.0
[INFO] [stderr]   Downloaded kurbo v0.8.3
[INFO] [stderr]   Downloaded unic-bidi v0.9.0
[INFO] [stderr]   Downloaded arrow2 v0.10.1
[INFO] [stderr]   Downloaded piet v0.5.0
[INFO] [stderr]   Downloaded polars-time v0.20.0
[INFO] [stderr]   Downloaded piet-coregraphics v0.5.0
[INFO] [stderr]   Downloaded piet-direct2d v0.5.0
[INFO] [stderr]   Downloaded svg v0.10.0
[INFO] [stderr]   Downloaded lexical v6.1.0
[INFO] [stderr]   Downloaded polars-core v0.20.0
[INFO] [stderr]   Downloaded piet-svg v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.61.0" "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] eb65ddb9f4e48ee449e4f1e8868ab408ea3cbca29a3ba5ceca3a9b245666b49c
[INFO] running `Command { std: "docker" "start" "-a" "eb65ddb9f4e48ee449e4f1e8868ab408ea3cbca29a3ba5ceca3a9b245666b49c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb65ddb9f4e48ee449e4f1e8868ab408ea3cbca29a3ba5ceca3a9b245666b49c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb65ddb9f4e48ee449e4f1e8868ab408ea3cbca29a3ba5ceca3a9b245666b49c", kill_on_drop: false }`
[INFO] [stdout] eb65ddb9f4e48ee449e4f1e8868ab408ea3cbca29a3ba5ceca3a9b245666b49c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.61.0" "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] 248c53c4cd2f3cd8f2edc406ec8ece3205307d1afbec9061d8cf7d0203656839
[INFO] running `Command { std: "docker" "start" "-a" "248c53c4cd2f3cd8f2edc406ec8ece3205307d1afbec9061d8cf7d0203656839", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling strum v0.21.0
[INFO] [stderr]    Compiling version-compare v0.0.11
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling parking_lot_core v0.9.2
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking strength_reduce v0.2.3
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking unic-common v0.9.0
[INFO] [stderr]     Checking hash_hasher v2.0.3
[INFO] [stderr]     Checking unic-char-range v0.9.0
[INFO] [stderr]     Checking streaming-iterator v0.1.5
[INFO] [stderr]     Checking simdutf8 v0.1.3
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking strum v0.23.0
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking xi-unicode v0.3.0
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]     Checking svg v0.10.0
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]     Checking lexical-util v0.8.3
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling cfg-expr v0.8.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking unic-ucd-version v0.9.0
[INFO] [stderr]     Checking unic-char-property v0.9.0
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]     Checking kurbo v0.8.3
[INFO] [stderr]     Checking log v0.4.16
[INFO] [stderr]     Checking unic-ucd-bidi v0.9.0
[INFO] [stderr]     Checking lexical-parse-integer v0.8.3
[INFO] [stderr]     Checking lexical-write-integer v0.8.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking png v0.17.5
[INFO] [stderr]     Checking unic-bidi v0.9.0
[INFO] [stderr]     Checking lexical-write-float v0.8.4
[INFO] [stderr]     Checking lexical-parse-float v0.8.3
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking memmap2 v0.5.3
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking euclid v0.22.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking lexical-core v0.8.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking piet v0.5.0
[INFO] [stderr]     Checking lexical v6.1.0
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking crossterm v0.23.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking piet-svg v0.5.0
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]     Checking hashbrown v0.12.0
[INFO] [stderr]     Checking polars-utils v0.20.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]    Compiling multiversion-macros v0.6.1
[INFO] [stderr]    Compiling bytemuck_derive v1.1.0
[INFO] [stderr]    Compiling strum_macros v0.23.1
[INFO] [stderr]     Checking bytemuck v1.9.0
[INFO] [stderr]     Checking multiversion v0.6.1
[INFO] [stderr]     Checking arrow2 v0.10.1
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.3
[INFO] [stderr]    Compiling system-deps v3.2.0
[INFO] [stderr]     Checking comfy-table v5.0.1
[INFO] [stderr]    Compiling glib-macros v0.14.1
[INFO] [stderr]    Compiling glib-sys v0.14.0
[INFO] [stderr]    Compiling gobject-sys v0.14.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.14.9
[INFO] [stderr]    Compiling pango-sys v0.14.0
[INFO] [stderr]    Compiling pangocairo-sys v0.14.0
[INFO] [stderr]     Checking glib v0.14.8
[INFO] [stderr]     Checking polars-arrow v0.20.0
[INFO] [stderr]     Checking polars-core v0.20.0
[INFO] [stderr]     Checking pango v0.14.8
[INFO] [stderr]     Checking cairo-rs v0.14.9
[INFO] [stderr]     Checking pangocairo v0.14.0
[INFO] [stderr]     Checking piet-cairo v0.5.0
[INFO] [stderr]     Checking piet-common v0.5.0
[INFO] [stderr]     Checking polars-time v0.20.0
[INFO] [stderr]     Checking polars-io v0.20.0
[INFO] [stderr]     Checking polars-lazy v0.20.0
[INFO] [stderr]     Checking polars v0.20.0
[INFO] [stderr]  Documenting ezel v0.0.1 (/opt/rustwide/workdir)
[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(min_specialization)]
[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 `ezel`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name ezel src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="advise"' --cfg 'feature="default"' --cfg 'feature="piet-svg"' --cfg 'feature="png"' --cfg 'feature="svg"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=66c452450015fe7b -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-ee185080059e5b20.rmeta --extern cassowary=/opt/rustwide/target/debug/deps/libcassowary-bc69f8a3cc915acc.rmeta --extern euclid=/opt/rustwide/target/debug/deps/libeuclid-21519729b112ae3b.rmeta --extern piet=/opt/rustwide/target/debug/deps/libpiet-cb28d3423fe9cc84.rmeta --extern piet_common=/opt/rustwide/target/debug/deps/libpiet_common-fe88bd8eb21fc3e7.rmeta --extern piet_svg=/opt/rustwide/target/debug/deps/libpiet_svg-79298e3b7dae7bde.rmeta --extern polars=/opt/rustwide/target/debug/deps/libpolars-d42a92b34c9941f8.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-2825e5990bff94f7.rmeta --extern rand_distr=/opt/rustwide/target/debug/deps/librand_distr-c58697557e51eb27.rmeta --cap-lints=warn --crate-version 0.0.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "248c53c4cd2f3cd8f2edc406ec8ece3205307d1afbec9061d8cf7d0203656839", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "248c53c4cd2f3cd8f2edc406ec8ece3205307d1afbec9061d8cf7d0203656839", kill_on_drop: false }`
[INFO] [stdout] 248c53c4cd2f3cd8f2edc406ec8ece3205307d1afbec9061d8cf7d0203656839