[INFO] fetching crate avr-progmem 0.1.2...
[INFO] documenting avr-progmem-0.1.2 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate avr-progmem 0.1.2 into /workspace/builds/worker-39/source
[INFO] validating manifest of crates.io crate avr-progmem 0.1.2 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate avr-progmem 0.1.2
[INFO] finished tweaking crates.io crate avr-progmem 0.1.2
[INFO] tweaked toml for crates.io crate avr-progmem 0.1.2 written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] crate crates.io crate avr-progmem 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d4101b5525d832014c63cda64a4aba18dc6e1a7c6ce09d9385e007ac93e3eb1
[INFO] running `Command { std: "docker" "start" "-a" "8d4101b5525d832014c63cda64a4aba18dc6e1a7c6ce09d9385e007ac93e3eb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d4101b5525d832014c63cda64a4aba18dc6e1a7c6ce09d9385e007ac93e3eb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d4101b5525d832014c63cda64a4aba18dc6e1a7c6ce09d9385e007ac93e3eb1", kill_on_drop: false }`
[INFO] [stdout] 8d4101b5525d832014c63cda64a4aba18dc6e1a7c6ce09d9385e007ac93e3eb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e0fbe3f773866eac9af338a0dd50b0d981d4337bb923f1fd0cc0bf49d2dc1fff
[INFO] running `Command { std: "docker" "start" "-a" "e0fbe3f773866eac9af338a0dd50b0d981d4337bb923f1fd0cc0bf49d2dc1fff", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]  Documenting avr-progmem v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(llvm_asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:13:18
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![cfg_attr(doc, feature(const_generics))]
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[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] [stderr] error: could not document `avr-progmem`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name avr_progmem src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="lpm-asm-loop"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-faae338fd1ab0e78.rmeta --cap-lints=warn --crate-version 0.1.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e0fbe3f773866eac9af338a0dd50b0d981d4337bb923f1fd0cc0bf49d2dc1fff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0fbe3f773866eac9af338a0dd50b0d981d4337bb923f1fd0cc0bf49d2dc1fff", kill_on_drop: false }`
[INFO] [stdout] e0fbe3f773866eac9af338a0dd50b0d981d4337bb923f1fd0cc0bf49d2dc1fff
