[INFO] fetching crate poplar 0.1.0...
[INFO] documenting poplar-0.1.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate poplar 0.1.0 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate poplar 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 poplar 0.1.0
[INFO] finished tweaking crates.io crate poplar 0.1.0
[INFO] tweaked toml for crates.io crate poplar 0.1.0 written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded compiler_builtins v0.1.73
[INFO] [stderr]   Downloaded pci_types v0.2.0
[INFO] [stderr]   Downloaded ptah v0.2.0
[INFO] [stderr]   Downloaded rustc-std-workspace-alloc v1.0.0
[INFO] [stderr]   Downloaded rustc-std-workspace-core v1.0.0
[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] b0e8b5939ff24f28fcda44b3d37823ca19f5255ae87f367ca8b28308454fef8f
[INFO] running `Command { std: "docker" "start" "-a" "b0e8b5939ff24f28fcda44b3d37823ca19f5255ae87f367ca8b28308454fef8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0e8b5939ff24f28fcda44b3d37823ca19f5255ae87f367ca8b28308454fef8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0e8b5939ff24f28fcda44b3d37823ca19f5255ae87f367ca8b28308454fef8f", kill_on_drop: false }`
[INFO] [stdout] b0e8b5939ff24f28fcda44b3d37823ca19f5255ae87f367ca8b28308454fef8f
[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] 427f9840478b3d2a42e2fae37c1a717a3c9191e483b7b0926f8fd09d95407c62
[INFO] running `Command { std: "docker" "start" "-a" "427f9840478b3d2a42e2fae37c1a717a3c9191e483b7b0926f8fd09d95407c62", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking ptah v0.2.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ptah-0.2.0/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(decl_macro, maybe_uninit_uninit_array, maybe_uninit_slice, never_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ptah-0.2.0/src/lib.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(decl_macro, maybe_uninit_uninit_array, maybe_uninit_slice, never_type)]
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ptah-0.2.0/src/lib.rs:2:51
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(decl_macro, maybe_uninit_uninit_array, maybe_uninit_slice, never_type)]
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking pci_types v0.2.0
[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] [stderr] error: could not compile `ptah` due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "427f9840478b3d2a42e2fae37c1a717a3c9191e483b7b0926f8fd09d95407c62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "427f9840478b3d2a42e2fae37c1a717a3c9191e483b7b0926f8fd09d95407c62", kill_on_drop: false }`
[INFO] [stdout] 427f9840478b3d2a42e2fae37c1a717a3c9191e483b7b0926f8fd09d95407c62