[INFO] fetching crate avr-progmem 0.3.3...
[INFO] documenting avr-progmem-0.3.3 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate avr-progmem 0.3.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate avr-progmem 0.3.3 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] removed /workspace/builds/worker-2-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate avr-progmem 0.3.3
[INFO] finished tweaking crates.io crate avr-progmem 0.3.3
[INFO] tweaked toml for crates.io crate avr-progmem 0.3.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate avr-progmem 0.3.3 already has a lockfile, it will not be regenerated
[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 panic-halt v0.2.0
[INFO] [stderr]   Downloaded ufmt-write v0.1.0
[INFO] [stderr]   Downloaded nb v1.0.0
[INFO] [stderr]   Downloaded ufmt-macros v0.2.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.50
[INFO] [stderr]   Downloaded ufmt v0.1.2
[INFO] [stderr]   Downloaded avr-device-macros v0.3.4
[INFO] [stderr]   Downloaded avr-device v0.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 53d1b8cab879bc68b1aa609647941cb772329b8142167445fe5173c18685080c
[INFO] running `Command { std: "docker" "start" "-a" "53d1b8cab879bc68b1aa609647941cb772329b8142167445fe5173c18685080c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "53d1b8cab879bc68b1aa609647941cb772329b8142167445fe5173c18685080c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53d1b8cab879bc68b1aa609647941cb772329b8142167445fe5173c18685080c", kill_on_drop: false }`
[INFO] [stdout] 53d1b8cab879bc68b1aa609647941cb772329b8142167445fe5173c18685080c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] d51df32ee7695df8992be95a2fe1f0ef146ef2a223f22cf4f4a68e8bf421fe8c
[INFO] running `Command { std: "docker" "start" "-a" "d51df32ee7695df8992be95a2fe1f0ef146ef2a223f22cf4f4a68e8bf421fe8c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling ufmt-macros v0.2.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking ufmt v0.1.2
[INFO] [stderr]  Documenting avr-progmem v0.3.3 (/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(asm_experimental_arch)]
[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:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(slice_ptr_len)]
[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:18:18
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![cfg_attr(doc, feature(doc_auto_cfg))]
[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] [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"' --cfg 'feature="ufmt"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=6c95b06d1639e3ca -L dependency=/opt/rustwide/target/debug/deps --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-7ace6bca0b33f39b.rmeta --extern derivative=/opt/rustwide/target/debug/deps/libderivative-0542cfbfff35e251.so --extern ufmt=/opt/rustwide/target/debug/deps/libufmt-cc7eb6454b5ccc54.rmeta --cap-lints=warn --crate-version 0.3.3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d51df32ee7695df8992be95a2fe1f0ef146ef2a223f22cf4f4a68e8bf421fe8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d51df32ee7695df8992be95a2fe1f0ef146ef2a223f22cf4f4a68e8bf421fe8c", kill_on_drop: false }`
[INFO] [stdout] d51df32ee7695df8992be95a2fe1f0ef146ef2a223f22cf4f4a68e8bf421fe8c
