[INFO] fetching crate gba 0.5.3...
[INFO] documenting gba-0.5.3 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate gba 0.5.3 into /workspace/builds/worker-68/source
[INFO] validating manifest of crates.io crate gba 0.5.3 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-68/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-68/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate gba 0.5.3
[INFO] finished tweaking crates.io crate gba 0.5.3
[INFO] tweaked toml for crates.io crate gba 0.5.3 written to /workspace/builds/worker-68/source/Cargo.toml
[INFO] crate crates.io crate gba 0.5.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded voladdress v0.4.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e873abe69434298c12f2c58ad829d66f9fb5efd1472958a85c77e89b22d2309
[INFO] running `Command { std: "docker" "start" "-a" "6e873abe69434298c12f2c58ad829d66f9fb5efd1472958a85c77e89b22d2309", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e873abe69434298c12f2c58ad829d66f9fb5efd1472958a85c77e89b22d2309", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e873abe69434298c12f2c58ad829d66f9fb5efd1472958a85c77e89b22d2309", kill_on_drop: false }`
[INFO] [stdout] 6e873abe69434298c12f2c58ad829d66f9fb5efd1472958a85c77e89b22d2309
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ab91737755b00f8f627b5082a949df07d1e1acf414e0bbab927b07ce89d1cca
[INFO] running `Command { std: "docker" "start" "-a" "1ab91737755b00f8f627b5082a949df07d1e1acf414e0bbab927b07ce89d1cca", kill_on_drop: false }`
[INFO] [stderr]    Compiling gba v0.5.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking voladdress v0.4.5
[INFO] [stderr]  Documenting gba v0.5.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(isa_attribute)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `gba`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name gba src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=538091eeb377361f -L dependency=/opt/rustwide/target/debug/deps --extern voladdress=/opt/rustwide/target/debug/deps/libvoladdress-9b16eb3f525953fe.rmeta --cap-lints=warn --crate-version 0.5.3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "1ab91737755b00f8f627b5082a949df07d1e1acf414e0bbab927b07ce89d1cca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ab91737755b00f8f627b5082a949df07d1e1acf414e0bbab927b07ce89d1cca", kill_on_drop: false }`
[INFO] [stdout] 1ab91737755b00f8f627b5082a949df07d1e1acf414e0bbab927b07ce89d1cca