[INFO] fetching crate dh-drone-stm32f4-utils 0.1.2...
[INFO] testing dh-drone-stm32f4-utils-0.1.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate dh-drone-stm32f4-utils 0.1.2 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate dh-drone-stm32f4-utils 0.1.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-33/source/.cargo/config
[INFO] removed /workspace/builds/worker-33/source/rust-toolchain
[INFO] started tweaking crates.io crate dh-drone-stm32f4-utils 0.1.2
[INFO] finished tweaking crates.io crate dh-drone-stm32f4-utils 0.1.2
[INFO] tweaked toml for crates.io crate dh-drone-stm32f4-utils 0.1.2 written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded drone-core-macros v0.12.1
[INFO] [stderr]   Downloaded drone-cortexm v0.12.2
[INFO] [stderr]   Downloaded drone-stm32-map-pieces-5 v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-pieces-8 v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-periph-exti v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-periph-adc v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-periph-dma v0.12.3
[INFO] [stderr]   Downloaded drone-svd v0.12.0
[INFO] [stderr]   Downloaded drone-stm32-map-pieces-6 v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-periph-gpio v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-periph-i2c v0.12.3
[INFO] [stderr]   Downloaded drone-ctypes v0.12.1
[INFO] [stderr]   Downloaded drone-stm32-map-pieces-7 v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-pieces-9 v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-pieces v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-pieces-1 v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-pieces-3 v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-periph-tim v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-pieces-11 v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-pieces-2 v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-pieces-4 v0.12.3
[INFO] [stderr]   Downloaded drone-core v0.12.1
[INFO] [stderr]   Downloaded drone-stm32-map-pieces-10 v0.12.3
[INFO] [stderr]   Downloaded drone-cortexm-macros v0.12.2
[INFO] [stderr]   Downloaded drone-stm32-map-svd v0.12.3
[INFO] [stderr]   Downloaded drone-stm32-map-pieces-12 v0.12.3
[INFO] [stderr]   Downloaded drone-config v0.12.4
[INFO] [stderr]   Downloaded drone-macros-core v0.12.1
[INFO] [stderr]   Downloaded drone-stm32-map v0.12.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15765222e88980078a7832a567390d324fce5ce0c99ecf74260ac20b5be6670e
[INFO] running `Command { std: "docker" "start" "-a" "15765222e88980078a7832a567390d324fce5ce0c99ecf74260ac20b5be6670e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15765222e88980078a7832a567390d324fce5ce0c99ecf74260ac20b5be6670e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15765222e88980078a7832a567390d324fce5ce0c99ecf74260ac20b5be6670e", kill_on_drop: false }`
[INFO] [stdout] 15765222e88980078a7832a567390d324fce5ce0c99ecf74260ac20b5be6670e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cece63d2c3259ac05111ede1907860cd98a82f35162dd36bd173aa6c64308f00
[INFO] running `Command { std: "docker" "start" "-a" "cece63d2c3259ac05111ede1907860cd98a82f35162dd36bd173aa6c64308f00", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling futures-sink v0.3.17
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling if_chain v1.0.2
[INFO] [stderr]    Compiling futures-io v0.3.17
[INFO] [stderr]    Compiling drone-ctypes v0.12.1
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling drone-macros-core v0.12.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling drone-cortexm-macros v0.12.2
[INFO] [stderr]    Compiling thiserror v1.0.29
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling serde-xml-rs v0.4.1
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling drone-svd v0.12.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/drone-svd-0.12.0/src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(bool_to_option)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/drone-svd-0.12.0/src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![feature(cell_update)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/drone-svd-0.12.0/src/lib.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![feature(generator_trait)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/drone-svd-0.12.0/src/lib.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![feature(generators)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/drone-svd-0.12.0/src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![feature(str_strip)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/drone-svd-0.12.0/src/lib.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | #![feature(track_caller)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `track_caller` has been stable since 1.46.0 and no longer requires an attribute to enable
[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 compile `drone-svd` due to 7 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "cece63d2c3259ac05111ede1907860cd98a82f35162dd36bd173aa6c64308f00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cece63d2c3259ac05111ede1907860cd98a82f35162dd36bd173aa6c64308f00", kill_on_drop: false }`
[INFO] [stdout] cece63d2c3259ac05111ede1907860cd98a82f35162dd36bd173aa6c64308f00