[INFO] fetching crate memega 0.1.0...
[INFO] documenting memega-0.1.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate memega 0.1.0 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate memega 0.1.0 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] started tweaking crates.io crate memega 0.1.0
[INFO] finished tweaking crates.io crate memega 0.1.0
[INFO] tweaked toml for crates.io crate memega 0.1.0 written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] crate crates.io crate memega 0.1.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] [stdout] 18ccdda04311bdf0bae5732ca00e7a2189e79f1570eb15b81d70fc13fd6d692f
[INFO] running `Command { std: "docker" "start" "-a" "18ccdda04311bdf0bae5732ca00e7a2189e79f1570eb15b81d70fc13fd6d692f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18ccdda04311bdf0bae5732ca00e7a2189e79f1570eb15b81d70fc13fd6d692f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18ccdda04311bdf0bae5732ca00e7a2189e79f1570eb15b81d70fc13fd6d692f", kill_on_drop: false }`
[INFO] [stdout] 18ccdda04311bdf0bae5732ca00e7a2189e79f1570eb15b81d70fc13fd6d692f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] [stdout] f4a971fbe28c1c1bf41848dd993f58bc4a137c17cce696275be67b77af51be97
[INFO] running `Command { std: "docker" "start" "-a" "f4a971fbe28c1c1bf41848dd993f58bc4a137c17cce696275be67b77af51be97", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]    Compiling libm v0.2.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling eyre v0.6.7
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking owo-colors v3.3.0
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking float-ord v0.3.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking float-pretty-print v0.1.1
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking strum v0.24.0
[INFO] [stderr]     Checking tracing-core v0.1.23
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking concurrent_lru v0.2.0
[INFO] [stderr]     Checking tracing v0.1.32
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking tracing-subscriber v0.3.9
[INFO] [stderr]     Checking easy-cast v0.4.4
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking tracing-error v0.2.0
[INFO] [stderr]     Checking color-spantrace v0.2.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking average v0.13.1
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking mathru v0.12.0
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]     Checking color-eyre v0.6.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling strum_macros v0.24.0
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.3
[INFO] [stderr]    Compiling num_enum_derive v0.5.7
[INFO] [stderr]     Checking memestat v0.1.0
[INFO] [stderr]     Checking num_enum v0.5.7
[INFO] [stderr]  Documenting memega v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | #![feature(array_chunks, is_sorted, trait_alias)]
[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 `memega`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name memega src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=74275567264b72e2 -L dependency=/opt/rustwide/target/debug/deps --extern approx=/opt/rustwide/target/debug/deps/libapprox-570f960b4626e504.rmeta --extern color_eyre=/opt/rustwide/target/debug/deps/libcolor_eyre-530584ebaa93eb38.rmeta --extern concurrent_lru=/opt/rustwide/target/debug/deps/libconcurrent_lru-eab34454ad3ff0d8.rmeta --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-181a8b89aa5b311f.so --extern eyre=/opt/rustwide/target/debug/deps/libeyre-7638a778506002a7.rmeta --extern float_pretty_print=/opt/rustwide/target/debug/deps/libfloat_pretty_print-92278dda380c81b1.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-7659a8459358bc06.rmeta --extern memestat=/opt/rustwide/target/debug/deps/libmemestat-1bc7d484972e643c.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-16c2bb1830ab3d42.rmeta --extern num_enum=/opt/rustwide/target/debug/deps/libnum_enum-fb5ff581b87b5fa6.rmeta --extern pretty_env_logger=/opt/rustwide/target/debug/deps/libpretty_env_logger-93904dd83a46a6fb.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-2244915e860aa9a7.rmeta --extern rand_distr=/opt/rustwide/target/debug/deps/librand_distr-fc934813b4213d55.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-77b19e2219b1e01e.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-636fbe01812edaf1.rmeta --extern strum=/opt/rustwide/target/debug/deps/libstrum-b67d6e4ce8f64257.rmeta --extern strum_macros=/opt/rustwide/target/debug/deps/libstrum_macros-902d17c475ac9a05.so --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "f4a971fbe28c1c1bf41848dd993f58bc4a137c17cce696275be67b77af51be97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4a971fbe28c1c1bf41848dd993f58bc4a137c17cce696275be67b77af51be97", kill_on_drop: false }`
[INFO] [stdout] f4a971fbe28c1c1bf41848dd993f58bc4a137c17cce696275be67b77af51be97