[INFO] fetching crate aml 0.16.3...
[INFO] documenting aml-0.16.3 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate aml 0.16.3 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate aml 0.16.3 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate aml 0.16.3
[INFO] finished tweaking crates.io crate aml 0.16.3
[INFO] tweaked toml for crates.io crate aml 0.16.3 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tap v1.0.1
[INFO] [stderr]   Downloaded wyz v0.5.1
[INFO] [stderr]   Downloaded radium v0.7.0
[INFO] [stderr]   Downloaded funty v2.0.0
[INFO] [stderr]   Downloaded bitvec v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a69ce80b255cff0810d885c4a46ea70a388d0141bae5bcbd385f12bed223f8a
[INFO] running `Command { std: "docker" "start" "-a" "6a69ce80b255cff0810d885c4a46ea70a388d0141bae5bcbd385f12bed223f8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a69ce80b255cff0810d885c4a46ea70a388d0141bae5bcbd385f12bed223f8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a69ce80b255cff0810d885c4a46ea70a388d0141bae5bcbd385f12bed223f8a", kill_on_drop: false }`
[INFO] [stdout] 6a69ce80b255cff0810d885c4a46ea70a388d0141bae5bcbd385f12bed223f8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae30f9b29728350f099c624bc703428c5b5782b91d553cb78c48019a520a4485
[INFO] running `Command { std: "docker" "start" "-a" "ae30f9b29728350f099c624bc703428c5b5782b91d553cb78c48019a520a4485", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking bit_field v0.10.2
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking spinning_top v0.2.5
[INFO] [stderr]  Documenting aml v0.16.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:38:1
[INFO] [stdout]    |
[INFO] [stdout] 38 | #![feature(decl_macro, type_ascription, box_syntax)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `aml`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name aml src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=9114f5293a4a1f83 -L dependency=/opt/rustwide/target/debug/deps --extern bit_field=/opt/rustwide/target/debug/deps/libbit_field-41da5150dd791f09.rmeta --extern bitvec=/opt/rustwide/target/debug/deps/libbitvec-c0a6fce77f87b3d6.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-be9f0d6e33bcc818.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-43372439ad3c157d.rmeta --extern spinning_top=/opt/rustwide/target/debug/deps/libspinning_top-8c6d291a53844409.rmeta --cap-lints=warn --crate-version 0.16.3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ae30f9b29728350f099c624bc703428c5b5782b91d553cb78c48019a520a4485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae30f9b29728350f099c624bc703428c5b5782b91d553cb78c48019a520a4485", kill_on_drop: false }`
[INFO] [stdout] ae30f9b29728350f099c624bc703428c5b5782b91d553cb78c48019a520a4485
