[INFO] fetching crate substance-framework 0.3.0-alpha...
[INFO] documenting substance-framework-0.3.0-alpha against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate substance-framework 0.3.0-alpha into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate substance-framework 0.3.0-alpha 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 substance-framework 0.3.0-alpha
[INFO] finished tweaking crates.io crate substance-framework 0.3.0-alpha
[INFO] tweaked toml for crates.io crate substance-framework 0.3.0-alpha written to /workspace/builds/worker-11/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 libc-print v0.1.19
[INFO] [stderr]   Downloaded substance-macro v0.2.0-alpha
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] abfa37957e8d9e9136b48ff0cb68c446582e82b5ebf5698b0a46348fb0a944c6
[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" "abfa37957e8d9e9136b48ff0cb68c446582e82b5ebf5698b0a46348fb0a944c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abfa37957e8d9e9136b48ff0cb68c446582e82b5ebf5698b0a46348fb0a944c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abfa37957e8d9e9136b48ff0cb68c446582e82b5ebf5698b0a46348fb0a944c6", kill_on_drop: false }`
[INFO] [stdout] abfa37957e8d9e9136b48ff0cb68c446582e82b5ebf5698b0a46348fb0a944c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] c824094210885cc999acb1b34c595e911b23dbe28937974242fbc495bbaf6497
[INFO] running `Command { std: "docker" "start" "-a" "c824094210885cc999acb1b34c595e911b23dbe28937974242fbc495bbaf6497", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking spin v0.9.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking libc-print v0.1.19
[INFO] [stderr]    Compiling substance-macro v0.2.0-alpha
[INFO] [stderr]  Documenting substance-framework v0.3.0-alpha (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | #![feature(lang_items)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:26:1
[INFO] [stdout]    |
[INFO] [stdout] 26 | #![feature(core_intrinsics)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | #![feature(panic_internals)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | #![feature(panic_info_message)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | #![feature(stmt_expr_attributes)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 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 `substance-framework`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name substance_framework src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="combined"' --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ba0c37c30f9f17f0 -L dependency=/opt/rustwide/target/debug/deps --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-dcce77079dd8fe1e.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-ed3ba279ce80868a.rmeta --extern libc_print=/opt/rustwide/target/debug/deps/liblibc_print-7ac707d1a828d61f.rmeta --extern spin=/opt/rustwide/target/debug/deps/libspin-4b698e19990ed30e.rmeta --extern substance_macro=/opt/rustwide/target/debug/deps/libsubstance_macro-4b1d44316884860b.so --cap-lints=warn --crate-version 0.3.0-alpha` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "c824094210885cc999acb1b34c595e911b23dbe28937974242fbc495bbaf6497", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c824094210885cc999acb1b34c595e911b23dbe28937974242fbc495bbaf6497", kill_on_drop: false }`
[INFO] [stdout] c824094210885cc999acb1b34c595e911b23dbe28937974242fbc495bbaf6497