[INFO] fetching crate drone-sd-stm32 0.2.2...
[INFO] documenting drone-sd-stm32-0.2.2 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate drone-sd-stm32 0.2.2 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate drone-sd-stm32 0.2.2 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate drone-sd-stm32 0.2.2
[INFO] finished tweaking crates.io crate drone-sd-stm32 0.2.2
[INFO] tweaked toml for crates.io crate drone-sd-stm32 0.2.2 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "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" "+beta-2020-10-09" "fetch" "--locked" "--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-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0feee2c9da081e2cd322e8f6dff183ef97ae231d7f87e828f6152a94a27ab755
[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" "0feee2c9da081e2cd322e8f6dff183ef97ae231d7f87e828f6152a94a27ab755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0feee2c9da081e2cd322e8f6dff183ef97ae231d7f87e828f6152a94a27ab755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0feee2c9da081e2cd322e8f6dff183ef97ae231d7f87e828f6152a94a27ab755", kill_on_drop: false }`
[INFO] [stdout] 0feee2c9da081e2cd322e8f6dff183ef97ae231d7f87e828f6152a94a27ab755
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a164a425d87947acedf5c7f2306eec85d0d80a538169612fb0487cbb315f935a
[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" "a164a425d87947acedf5c7f2306eec85d0d80a538169612fb0487cbb315f935a", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core-preview v0.2.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling if_chain v0.1.3
[INFO] [stderr]     Checking drone-ctypes v0.8.3
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]    Compiling xml-rs v0.3.6
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling backtrace v0.3.53
[INFO] [stderr]     Checking futures-channel-preview v0.2.2
[INFO] [stderr]     Checking futures-io-preview v0.2.2
[INFO] [stderr]     Checking futures-sink-preview v0.2.2
[INFO] [stderr]     Checking futures-util-preview v0.2.2
[INFO] [stderr]    Compiling drone-mirror-failure v0.1.1
[INFO] [stderr]     Checking futures-executor-preview v0.2.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking futures-stable-preview v0.2.3
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking futures-async-runtime-preview v0.2.3
[INFO] [stderr]     Checking futures-preview v0.2.2
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling drone-macros-core v0.8.3
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/drone-macros-core-0.8.3/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(proc_macro_diagnostic)]
[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 compile `drone-macros-core`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a164a425d87947acedf5c7f2306eec85d0d80a538169612fb0487cbb315f935a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a164a425d87947acedf5c7f2306eec85d0d80a538169612fb0487cbb315f935a", kill_on_drop: false }`
[INFO] [stdout] a164a425d87947acedf5c7f2306eec85d0d80a538169612fb0487cbb315f935a
