[INFO] fetching crate drone-sx1276-macros 0.1.0...
[INFO] documenting drone-sx1276-macros-0.1.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate drone-sx1276-macros 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate drone-sx1276-macros 0.1.0 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 drone-sx1276-macros 0.1.0
[INFO] finished tweaking crates.io crate drone-sx1276-macros 0.1.0
[INFO] tweaked toml for crates.io crate drone-sx1276-macros 0.1.0 written to /workspace/builds/worker-1-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]     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 clippy v0.0.302
[INFO] [stderr]   Downloaded drone-macros-core v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 66cb023badcbd1657af3c05a18f67adc9a3cee7bdd7545bdbe2992380ab96ff2
[INFO] running `Command { std: "docker" "start" "-a" "66cb023badcbd1657af3c05a18f67adc9a3cee7bdd7545bdbe2992380ab96ff2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66cb023badcbd1657af3c05a18f67adc9a3cee7bdd7545bdbe2992380ab96ff2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66cb023badcbd1657af3c05a18f67adc9a3cee7bdd7545bdbe2992380ab96ff2", kill_on_drop: false }`
[INFO] [stdout] 66cb023badcbd1657af3c05a18f67adc9a3cee7bdd7545bdbe2992380ab96ff2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 53303cb5cae0263ecdaf78c2fada083374445ac66f04c720ca8a3d9893ec0dd1
[INFO] running `Command { std: "docker" "start" "-a" "53303cb5cae0263ecdaf78c2fada083374445ac66f04c720ca8a3d9893ec0dd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking unicode-xid v0.0.4
[INFO] [stderr]     Checking ucd-util v0.1.10
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]     Checking quote v0.3.15
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking libc v0.2.151
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]     Checking utf8-ranges v1.0.5
[INFO] [stderr]     Checking synom v0.11.3
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking syn v0.11.11
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking drone-macros-core v0.7.0
[INFO] [stderr]  Documenting drone-sx1276-macros v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![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 document `drone-sx1276-macros`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --crate-type proc-macro --crate-name drone_sx1276_macros src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=87ae995487a1eaa2 -L dependency=/opt/rustwide/target/debug/deps --extern drone_macros_core=/opt/rustwide/target/debug/deps/libdrone_macros_core-1ba78b7ee22b09f8.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-e923feb5b4fb64e4.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-20138e0a663b6e50.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-896f316e8dfabf8b.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "53303cb5cae0263ecdaf78c2fada083374445ac66f04c720ca8a3d9893ec0dd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53303cb5cae0263ecdaf78c2fada083374445ac66f04c720ca8a3d9893ec0dd1", kill_on_drop: false }`
[INFO] [stdout] 53303cb5cae0263ecdaf78c2fada083374445ac66f04c720ca8a3d9893ec0dd1
