[INFO] fetching crate frawk 0.4.6...
[INFO] documenting frawk-0.4.6 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate frawk 0.4.6 into /workspace/builds/worker-63/source
[INFO] validating manifest of crates.io crate frawk 0.4.6 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-63/source/.cargo/config
[INFO] started tweaking crates.io crate frawk 0.4.6
[INFO] finished tweaking crates.io crate frawk 0.4.6
[INFO] tweaked toml for crates.io crate frawk 0.4.6 written to /workspace/builds/worker-63/source/Cargo.toml
[INFO] crate crates.io crate frawk 0.4.6 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 }`
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lalrpop-util v0.19.7
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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 }`
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[INFO] running `Command { std: "docker" "start" "-a" "a006838428445313d8b3200970c254420e883c83c9727d7a5284aee8cfdaa5ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a006838428445313d8b3200970c254420e883c83c9727d7a5284aee8cfdaa5ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a006838428445313d8b3200970c254420e883c83c9727d7a5284aee8cfdaa5ae", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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] 60c44450f910aa86decb8dfef806cfd7d3409cb2bce0c989b514409075d75c3d
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[INFO] [stderr]    Compiling target-lexicon v0.12.3
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.2
[INFO] [stderr]     Checking cranelift-entity v0.80.1
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling crunchy v0.2.2
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[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling ascii-canvas v3.0.0
[INFO] [stderr]     Checking assert_cmd v2.0.4
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking clap v3.1.8
[INFO] [stderr]     Checking petgraph v0.6.0
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling cranelift-codegen v0.80.1
[INFO] [stderr]    Compiling lalrpop-util v0.19.7
[INFO] [stderr]    Compiling lalrpop v0.19.7
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking grep-cli v0.1.6
[INFO] [stderr]    Compiling llvm-sys v120.2.3
[INFO] [stderr]     Checking cranelift-native v0.80.1
[INFO] [stderr]     Checking cranelift-frontend v0.80.1
[INFO] [stderr]     Checking cranelift-module v0.80.1
[INFO] [stderr]     Checking cranelift-jit v0.80.1
[INFO] [stderr]     Checking cranelift v0.80.1
[INFO] [stderr]    Compiling frawk v0.4.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tikv-jemallocator v0.4.3
[INFO] [stderr]  Documenting frawk v0.4.6 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `frawk`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:43
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(feature = "unstable", feature(core_intrinsics))]
[INFO] [stdout]   |                                           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name frawk src/main.rs -o /opt/rustwide/target/doc --cfg 'feature="allow_avx2"' --cfg 'feature="default"' --cfg 'feature="llvm-sys"' --cfg 'feature="llvm_backend"' --cfg 'feature="tikv-jemallocator"' --cfg 'feature="unstable"' --cfg 'feature="use_jemalloc"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a8b04201ababe975 -L dependency=/opt/rustwide/target/debug/deps --extern assert_cmd=/opt/rustwide/target/debug/deps/libassert_cmd-3eca74d42ba5bb57.rmeta --extern bumpalo=/opt/rustwide/target/debug/deps/libbumpalo-da815c81a389f2db.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-dcce77079dd8fe1e.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-31e0a11a9d25b624.rmeta --extern cranelift=/opt/rustwide/target/debug/deps/libcranelift-3578213d928de7e8.rmeta --extern cranelift_codegen=/opt/rustwide/target/debug/deps/libcranelift_codegen-4b0c687d90fadc41.rmeta --extern cranelift_frontend=/opt/rustwide/target/debug/deps/libcranelift_frontend-97f3b3d9aad411ee.rmeta --extern cranelift_jit=/opt/rustwide/target/debug/deps/libcranelift_jit-1e6247ae94eb3c4d.rmeta --extern cranelift_module=/opt/rustwide/target/debug/deps/libcranelift_module-eed5536da6349bd7.rmeta --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-7feaff23719c386a.rmeta --extern crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-0828918ca0bde37b.rmeta --extern fast_float=/opt/rustwide/target/debug/deps/libfast_float-3d164d5e0284804e.rmeta --extern grep_cli=/opt/rustwide/target/debug/deps/libgrep_cli-3ed46ab4606a7a24.rmeta --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-b27a188baa96e2d6.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-c3e915a3b5e36158.rmeta --extern itoa=/opt/rustwide/target/debug/deps/libitoa-75e7c899ce14f4bd.rmeta --extern lalrpop_util=/opt/rustwide/target/debug/deps/liblalrpop_util-4563a8221554fe0e.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-ef529884c2699020.rmeta --extern llvm_sys=/opt/rustwide/target/debug/deps/libllvm_sys-12ed8aec38b8cc1b.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-eb1c79f797f36e54.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-8deb3a93f209d36e.rmeta --extern paste=/opt/rustwide/target/debug/deps/libpaste-bd6d0284544a8d29.so --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-1c0d38281e71c222.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-e94cdc872b8d0f58.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-cb768725e26a3b91.rmeta --extern regex_syntax=/opt/rustwide/target/debug/deps/libregex_syntax-bc8766588d59542a.rmeta --extern ryu=/opt/rustwide/target/debug/deps/libryu-37f0dfe7702a4eaf.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-1d5297fdf9e8ed94.rmeta --extern target_lexicon=/opt/rustwide/target/debug/deps/libtarget_lexicon-8fc4c773f1367a7d.rmeta --extern termcolor=/opt/rustwide/target/debug/deps/libtermcolor-937a10c776d9cd6f.rmeta --extern tikv_jemallocator=/opt/rustwide/target/debug/deps/libtikv_jemallocator-594d54051a15a851.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-1978c68b87e70885.rmeta --cap-lints=warn --crate-version 0.4.6` (exit status: 1)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:3:43
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![cfg_attr(feature = "unstable", feature(test))]
[INFO] [stdout]   |                                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:4:43
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![cfg_attr(feature = "unstable", feature(write_all_vectored))]
[INFO] [stdout]   |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "60c44450f910aa86decb8dfef806cfd7d3409cb2bce0c989b514409075d75c3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60c44450f910aa86decb8dfef806cfd7d3409cb2bce0c989b514409075d75c3d", kill_on_drop: false }`
[INFO] [stdout] 60c44450f910aa86decb8dfef806cfd7d3409cb2bce0c989b514409075d75c3d