[INFO] fetching crate include-flate-codegen-exports 0.1.4...
[INFO] documenting include-flate-codegen-exports-0.1.4 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate include-flate-codegen-exports 0.1.4 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate include-flate-codegen-exports 0.1.4 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 include-flate-codegen-exports 0.1.4
[INFO] finished tweaking crates.io crate include-flate-codegen-exports 0.1.4
[INFO] tweaked toml for crates.io crate include-flate-codegen-exports 0.1.4 written to /workspace/builds/worker-9/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 include-flate-codegen v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 699a1b971c2d0e55a426d84bf009303b5a1243bcdb00b5ab27692e4f04358141
[INFO] running `Command { std: "docker" "start" "-a" "699a1b971c2d0e55a426d84bf009303b5a1243bcdb00b5ab27692e4f04358141", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "699a1b971c2d0e55a426d84bf009303b5a1243bcdb00b5ab27692e4f04358141", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "699a1b971c2d0e55a426d84bf009303b5a1243bcdb00b5ab27692e4f04358141", kill_on_drop: false }`
[INFO] [stdout] 699a1b971c2d0e55a426d84bf009303b5a1243bcdb00b5ab27692e4f04358141
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] f0bd94e83dbf83f0c7c4be9684f52b121094f1e48cf0e978cf06bf47351174ef
[INFO] running `Command { std: "docker" "start" "-a" "f0bd94e83dbf83f0c7c4be9684f52b121094f1e48cf0e978cf06bf47351174ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling rle-decode-fast v1.0.3
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling libflate_lz77 v1.1.0
[INFO] [stderr]    Compiling libflate v1.2.0
[INFO] [stderr]    Compiling include-flate-codegen v0.1.4
[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/include-flate-codegen-0.1.4/src/lib.rs:16:46
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![cfg_attr(not(feature = "stable"), feature(proc_macro_span))]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `include-flate-codegen` due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f0bd94e83dbf83f0c7c4be9684f52b121094f1e48cf0e978cf06bf47351174ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0bd94e83dbf83f0c7c4be9684f52b121094f1e48cf0e978cf06bf47351174ef", kill_on_drop: false }`
[INFO] [stdout] f0bd94e83dbf83f0c7c4be9684f52b121094f1e48cf0e978cf06bf47351174ef