[INFO] fetching crate para-cli 0.1.0...
[INFO] documenting para-cli-0.1.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate para-cli 0.1.0 into /workspace/builds/worker-16/source
[INFO] validating manifest of crates.io crate para-cli 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] removed /workspace/builds/worker-16/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate para-cli 0.1.0
[INFO] finished tweaking crates.io crate para-cli 0.1.0
[INFO] tweaked toml for crates.io crate para-cli 0.1.0 written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] crate crates.io crate para-cli 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded human-panic v1.0.3
[INFO] [stderr]   Downloaded os_type v2.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] 3f57fa60239e110daa6c18b8daa9beadd704242183193c8805d584e15ab6d788
[INFO] running `Command { std: "docker" "start" "-a" "3f57fa60239e110daa6c18b8daa9beadd704242183193c8805d584e15ab6d788", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f57fa60239e110daa6c18b8daa9beadd704242183193c8805d584e15ab6d788", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f57fa60239e110daa6c18b8daa9beadd704242183193c8805d584e15ab6d788", kill_on_drop: false }`
[INFO] [stdout] 3f57fa60239e110daa6c18b8daa9beadd704242183193c8805d584e15ab6d788
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] dedb622aec870ce0ddf1c9f7ff9cc55443ded885acbd1cf66b59113d8a22f7a6
[INFO] running `Command { std: "docker" "start" "-a" "dedb622aec870ce0ddf1c9f7ff9cc55443ded885acbd1cf66b59113d8a22f7a6", 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]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking adler32 v1.2.0
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[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking either v1.6.1
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[INFO] [stderr]    Compiling serde_derive v1.0.136
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[INFO] [stderr]    Compiling serde_json v1.0.79
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[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking bytemuck v1.8.0
[INFO] [stderr]    Compiling para-cli v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking byteorder v1.4.3
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[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking os_type v2.4.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]     Checking jpeg-decoder v0.2.2
[INFO] [stderr]     Checking pin-project v1.0.10
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[INFO] [stderr]     Checking image v0.24.1
[INFO] [stderr]  Documenting para-cli v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(decl_macro, generators, generator_trait)]
[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 `para-cli`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name para src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=4475642c006b4023 -L dependency=/opt/rustwide/target/debug/deps --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-7c274f399d426ec2.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-402cafccbcd0d3e7.rmeta --extern human_panic=/opt/rustwide/target/debug/deps/libhuman_panic-13907b670c5957d8.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-39a0c3e5eb4c7b28.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-f215d5f7e1144022.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "dedb622aec870ce0ddf1c9f7ff9cc55443ded885acbd1cf66b59113d8a22f7a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dedb622aec870ce0ddf1c9f7ff9cc55443ded885acbd1cf66b59113d8a22f7a6", kill_on_drop: false }`
[INFO] [stdout] dedb622aec870ce0ddf1c9f7ff9cc55443ded885acbd1cf66b59113d8a22f7a6