[INFO] fetching crate pinetime-macros 2.0.0...
[INFO] documenting pinetime-macros-2.0.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate pinetime-macros 2.0.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate pinetime-macros 2.0.0 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 pinetime-macros 2.0.0
[INFO] finished tweaking crates.io crate pinetime-macros 2.0.0
[INFO] tweaked toml for crates.io crate pinetime-macros 2.0.0 written to /workspace/builds/worker-15/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] [stderr]     Blocking waiting for file lock on package cache
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 8e37786dddf6663e57202c39ec86c654295d25848426c77005cb45e6324e2522
[INFO] running `Command { std: "docker" "start" "-a" "8e37786dddf6663e57202c39ec86c654295d25848426c77005cb45e6324e2522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e37786dddf6663e57202c39ec86c654295d25848426c77005cb45e6324e2522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e37786dddf6663e57202c39ec86c654295d25848426c77005cb45e6324e2522", kill_on_drop: false }`
[INFO] [stdout] 8e37786dddf6663e57202c39ec86c654295d25848426c77005cb45e6324e2522
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 6fc3a92561e8cdf7c9a2b573b26d4aaf719df748d35ab5de6f86a6d46110a498
[INFO] running `Command { std: "docker" "start" "-a" "6fc3a92561e8cdf7c9a2b573b26d4aaf719df748d35ab5de6f86a6d46110a498", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]     Checking unicode-ident v1.0.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking cty v0.1.5
[INFO] [stderr]     Checking cty v0.2.2
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking cstr_core v0.1.2
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]  Documenting pinetime-macros v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | #![feature(proc_macro_span)]  //  Allow use of spans in Procedural Macros
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[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 `pinetime-macros`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type proc-macro --crate-name macros src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="mynewt_os"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=efbdfb194edfc6f1 -L dependency=/opt/rustwide/target/debug/deps --extern cstr_core=/opt/rustwide/target/debug/deps/libcstr_core-187e1c3ce15b569e.rmeta --extern cty=/opt/rustwide/target/debug/deps/libcty-5cbaf35431deb9ac.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-5d07d3dc4f57ad41.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-c1d3bfa6658bd3cb.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-5e860005d80c271d.rmeta --extern rustc_serialize=/opt/rustwide/target/debug/deps/librustc_serialize-8bfa9ab41fa1e22e.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-6005d3945ea230c4.rmeta --extern proc_macro --cap-lints=warn --crate-version 2.0.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "6fc3a92561e8cdf7c9a2b573b26d4aaf719df748d35ab5de6f86a6d46110a498", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fc3a92561e8cdf7c9a2b573b26d4aaf719df748d35ab5de6f86a6d46110a498", kill_on_drop: false }`
[INFO] [stdout] 6fc3a92561e8cdf7c9a2b573b26d4aaf719df748d35ab5de6f86a6d46110a498