[INFO] fetching crate drone-micropython-stm32 0.1.1...
[INFO] testing drone-micropython-stm32-0.1.1 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate drone-micropython-stm32 0.1.1 into /workspace/builds/worker-114/source
[INFO] validating manifest of crates.io crate drone-micropython-stm32 0.1.1 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate drone-micropython-stm32 0.1.1
[INFO] finished tweaking crates.io crate drone-micropython-stm32 0.1.1
[INFO] tweaked toml for crates.io crate drone-micropython-stm32 0.1.1 written to /workspace/builds/worker-114/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-2022-04-10" "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-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a73b79ab9e86decc91f4db613512c1460d562e64a3df87c0b2109f82c5f716a
[INFO] running `Command { std: "docker" "start" "-a" "2a73b79ab9e86decc91f4db613512c1460d562e64a3df87c0b2109f82c5f716a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a73b79ab9e86decc91f4db613512c1460d562e64a3df87c0b2109f82c5f716a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a73b79ab9e86decc91f4db613512c1460d562e64a3df87c0b2109f82c5f716a", kill_on_drop: false }`
[INFO] [stdout] 2a73b79ab9e86decc91f4db613512c1460d562e64a3df87c0b2109f82c5f716a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da38ef896002c0017d23ac703f2aae0018b4dc1bfc24756898ac0096a15e6dea
[INFO] running `Command { std: "docker" "start" "-a" "da38ef896002c0017d23ac703f2aae0018b4dc1bfc24756898ac0096a15e6dea", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling futures-core-preview v0.2.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling bindgen v0.37.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling drone-ctypes v0.8.3
[INFO] [stderr]    Compiling make-cmd v0.1.0
[INFO] [stderr]    Compiling if_chain v0.1.3
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling object v0.27.1
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling proc-macro2 v0.3.5
[INFO] [stderr]    Compiling xml-rs v0.3.6
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling futures-channel-preview v0.2.2
[INFO] [stderr]    Compiling futures-io-preview v0.2.2
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling futures-sink-preview v0.2.2
[INFO] [stderr]    Compiling clang-sys v0.23.0
[INFO] [stderr]    Compiling futures-util-preview v0.2.2
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v1.0.5
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling futures-executor-preview v0.2.2
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling futures-stable-preview v0.2.3
[INFO] [stderr]    Compiling futures-async-runtime-preview v0.2.3
[INFO] [stderr]    Compiling futures-preview v0.2.2
[INFO] [stderr]    Compiling cexpr v0.2.3
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling addr2line v0.17.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling drone-mirror-failure 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:5:12
[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` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "da38ef896002c0017d23ac703f2aae0018b4dc1bfc24756898ac0096a15e6dea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da38ef896002c0017d23ac703f2aae0018b4dc1bfc24756898ac0096a15e6dea", kill_on_drop: false }`
[INFO] [stdout] da38ef896002c0017d23ac703f2aae0018b4dc1bfc24756898ac0096a15e6dea