[INFO] fetching crate init 0.2.0...
[INFO] documenting init-0.2.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate init 0.2.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate init 0.2.0 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] started tweaking crates.io crate init 0.2.0
[INFO] finished tweaking crates.io crate init 0.2.0
[INFO] tweaked toml for crates.io crate init 0.2.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded init_codegen v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] f65ab118c3a2c3bdf2eca93c29d9f5ba1d7ba94244829b4eee3d0781bf2b553c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f65ab118c3a2c3bdf2eca93c29d9f5ba1d7ba94244829b4eee3d0781bf2b553c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f65ab118c3a2c3bdf2eca93c29d9f5ba1d7ba94244829b4eee3d0781bf2b553c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f65ab118c3a2c3bdf2eca93c29d9f5ba1d7ba94244829b4eee3d0781bf2b553c", kill_on_drop: false }`
[INFO] [stdout] f65ab118c3a2c3bdf2eca93c29d9f5ba1d7ba94244829b4eee3d0781bf2b553c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d399de721184a2a8905d5a5fdffe2ea168f3b3f625bcc282ec9ab04361c8b37f
[INFO] running `Command { std: "docker" "start" "-a" "d399de721184a2a8905d5a5fdffe2ea168f3b3f625bcc282ec9ab04361c8b37f", kill_on_drop: false }`
[INFO] [stderr]     Checking gcc v0.3.55
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling init_codegen 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/github.com-1ecc6299db9ec823/init_codegen-0.2.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `proc_macro` has been stable since 1.29.0 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 `init_codegen` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d399de721184a2a8905d5a5fdffe2ea168f3b3f625bcc282ec9ab04361c8b37f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d399de721184a2a8905d5a5fdffe2ea168f3b3f625bcc282ec9ab04361c8b37f", kill_on_drop: false }`
[INFO] [stdout] d399de721184a2a8905d5a5fdffe2ea168f3b3f625bcc282ec9ab04361c8b37f