[INFO] cloning repository https://github.com/Sannrox/rust-arduino-love-o-meter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sannrox/rust-arduino-love-o-meter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSannrox%2Frust-arduino-love-o-meter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSannrox%2Frust-arduino-love-o-meter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ffd91da41692a1c98982a809c668256623cd18a5
[INFO] documenting Sannrox/rust-arduino-love-o-meter against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSannrox%2Frust-arduino-love-o-meter" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sannrox/rust-arduino-love-o-meter on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/Sannrox/rust-arduino-love-o-meter
[INFO] finished tweaking git repo https://github.com/Sannrox/rust-arduino-love-o-meter
[INFO] tweaked toml for git repo https://github.com/Sannrox/rust-arduino-love-o-meter written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Sannrox/rust-arduino-love-o-meter 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/Rahix/avr-hal`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ufmt_float v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b817dce5e6b8b5f11d2fada5a1f944e71368345bb04609c37441657acd8411c0
[INFO] running `Command { std: "docker" "start" "-a" "b817dce5e6b8b5f11d2fada5a1f944e71368345bb04609c37441657acd8411c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b817dce5e6b8b5f11d2fada5a1f944e71368345bb04609c37441657acd8411c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b817dce5e6b8b5f11d2fada5a1f944e71368345bb04609c37441657acd8411c0", kill_on_drop: false }`
[INFO] [stdout] b817dce5e6b8b5f11d2fada5a1f944e71368345bb04609c37441657acd8411c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65cc4ec370eca237f1bfad73547f155a2e05d0dc869fc37232d6f8bd13385d39
[INFO] running `Command { std: "docker" "start" "-a" "65cc4ec370eca237f1bfad73547f155a2e05d0dc869fc37232d6f8bd13385d39", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling rustversion v1.0.7
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking micromath v1.1.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling avr-device v0.3.4
[INFO] [stderr]    Compiling avr-hal-generic v0.1.0 (https://github.com/Rahix/avr-hal?branch=main#4f8ab259)
[INFO] [stderr]    Compiling ufmt-macros v0.1.1
[INFO] [stderr]    Compiling avr-device-macros v0.3.4
[INFO] [stderr]     Checking ufmt v0.1.0
[INFO] [stderr]     Checking ufmt_float v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/avr-device-0.3.4/src/lib.rs:65:35
[INFO] [stdout]    |
[INFO] [stdout] 65 | #![cfg_attr(avr_device_asm_macro, feature(asm_experimental_arch))]
[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 compile `avr-device` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "65cc4ec370eca237f1bfad73547f155a2e05d0dc869fc37232d6f8bd13385d39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65cc4ec370eca237f1bfad73547f155a2e05d0dc869fc37232d6f8bd13385d39", kill_on_drop: false }`
[INFO] [stdout] 65cc4ec370eca237f1bfad73547f155a2e05d0dc869fc37232d6f8bd13385d39
