[INFO] fetching crate r3_support_rza1 0.2.2...
[INFO] documenting r3_support_rza1-0.2.2 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate r3_support_rza1 0.2.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate r3_support_rza1 0.2.2 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 r3_support_rza1 0.2.2
[INFO] finished tweaking crates.io crate r3_support_rza1 0.2.2
[INFO] tweaked toml for crates.io crate r3_support_rza1 0.2.2 written to /workspace/builds/worker-0-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]     Blocking waiting for file lock on package cache
[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 r3 v0.2.4
[INFO] [stderr]   Downloaded r3_port_arm v0.2.3
[INFO] [stderr]   Downloaded rza1 v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e0c044a123e75e150ed49042c6fa450970a5b6f961f510d5bcd932a299e9c7dc
[INFO] running `Command { std: "docker" "start" "-a" "e0c044a123e75e150ed49042c6fa450970a5b6f961f510d5bcd932a299e9c7dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0c044a123e75e150ed49042c6fa450970a5b6f961f510d5bcd932a299e9c7dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0c044a123e75e150ed49042c6fa450970a5b6f961f510d5bcd932a299e9c7dc", kill_on_drop: false }`
[INFO] [stdout] e0c044a123e75e150ed49042c6fa450970a5b6f961f510d5bcd932a299e9c7dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e38859a55873750ebda7f27b8768ad545830e667c610d48e61c66b74869db0b7
[INFO] running `Command { std: "docker" "start" "-a" "e38859a55873750ebda7f27b8768ad545830e667c610d48e61c66b74869db0b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking elain v0.3.0
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling r3_port_arm v0.2.3
[INFO] [stderr]     Checking r0 v1.0.0
[INFO] [stderr]    Compiling tokenlock v0.3.8
[INFO] [stderr]     Checking tock-registers v0.7.0
[INFO] [stderr]     Checking rza1 v0.2.0
[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/tock-registers-0.7.0/src/lib.rs:56:1
[INFO] [stdout]    |
[INFO] [stdout] 56 | #![feature(const_fn_trait_bound)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `const_fn_trait_bound` has been stable since `1.61.0` and no longer requires an attribute to enable
[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 `tock-registers` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e38859a55873750ebda7f27b8768ad545830e667c610d48e61c66b74869db0b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e38859a55873750ebda7f27b8768ad545830e667c610d48e61c66b74869db0b7", kill_on_drop: false }`
[INFO] [stdout] e38859a55873750ebda7f27b8768ad545830e667c610d48e61c66b74869db0b7
