[INFO] fetching crate ruspiro-mailbox 0.4.1...
[INFO] documenting ruspiro-mailbox-0.4.1 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate ruspiro-mailbox 0.4.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate ruspiro-mailbox 0.4.1 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] started tweaking crates.io crate ruspiro-mailbox 0.4.1
[INFO] finished tweaking crates.io crate ruspiro-mailbox 0.4.1
[INFO] tweaked toml for crates.io crate ruspiro-mailbox 0.4.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded ruspiro-error v0.1.1
[INFO] [stderr]   Downloaded ruspiro-mmio-register v0.1.4
[INFO] [stderr]   Downloaded ruspiro-register v0.5.5
[INFO] [stderr]   Downloaded ruspiro-cache v0.4.1
[INFO] [stderr]   Downloaded ruspiro-arch-aarch64 v0.1.7
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d91fb1af68c7b8f77466af34527b2c0d5fd9a09f40fe4c9075f117f177bc6e9f
[INFO] running `Command { std: "docker" "start" "-a" "d91fb1af68c7b8f77466af34527b2c0d5fd9a09f40fe4c9075f117f177bc6e9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d91fb1af68c7b8f77466af34527b2c0d5fd9a09f40fe4c9075f117f177bc6e9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d91fb1af68c7b8f77466af34527b2c0d5fd9a09f40fe4c9075f117f177bc6e9f", kill_on_drop: false }`
[INFO] [stdout] d91fb1af68c7b8f77466af34527b2c0d5fd9a09f40fe4c9075f117f177bc6e9f
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/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] b5e65c48aa4a28e3c27d2afdb3818e4272b4c5ff7f038d1bf32bd49caae5fd94
[INFO] running `Command { std: "docker" "start" "-a" "b5e65c48aa4a28e3c27d2afdb3818e4272b4c5ff7f038d1bf32bd49caae5fd94", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]     Checking ruspiro-register v0.5.5
[INFO] [stderr]     Checking ruspiro-error v0.1.1
[INFO] [stderr]     Checking ruspiro-arch-aarch64 v0.1.7
[INFO] [stderr]     Checking ruspiro-mmio-register v0.1.4
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling ruspiro-cache v0.4.1
[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/ruspiro-cache-0.4.1/src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(llvm_asm, core_intrinsics)]
[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/index.crates.io-6f17d22bba15001f/ruspiro-cache-0.4.1/src/lib.rs:9:22
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(llvm_asm, core_intrinsics)]
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `llvm_asm`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/ruspiro-cache-0.4.1/src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(llvm_asm, core_intrinsics)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ruspiro-cache` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "b5e65c48aa4a28e3c27d2afdb3818e4272b4c5ff7f038d1bf32bd49caae5fd94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5e65c48aa4a28e3c27d2afdb3818e4272b4c5ff7f038d1bf32bd49caae5fd94", kill_on_drop: false }`
[INFO] [stdout] b5e65c48aa4a28e3c27d2afdb3818e4272b4c5ff7f038d1bf32bd49caae5fd94
