[INFO] fetching crate drone-sd-stm32 0.2.2...
[INFO] testing drone-sd-stm32-0.2.2 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate drone-sd-stm32 0.2.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate drone-sd-stm32 0.2.2 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b2fa95680ed70638c86b0a59029b3a77c7fd323400ec8eb63508e951b5857fb
[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" "5b2fa95680ed70638c86b0a59029b3a77c7fd323400ec8eb63508e951b5857fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b2fa95680ed70638c86b0a59029b3a77c7fd323400ec8eb63508e951b5857fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b2fa95680ed70638c86b0a59029b3a77c7fd323400ec8eb63508e951b5857fb", kill_on_drop: false }`
[INFO] [stdout] 5b2fa95680ed70638c86b0a59029b3a77c7fd323400ec8eb63508e951b5857fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c553b163d5362a4a80c008d43d557b9881c1057e39cfbf6a8df9ef3b6cd8d303
[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" "c553b163d5362a4a80c008d43d557b9881c1057e39cfbf6a8df9ef3b6cd8d303", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling futures-core-preview v0.2.3
[INFO] [stderr]    Compiling if_chain v0.1.3
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling drone-ctypes v0.8.3
[INFO] [stderr]    Compiling xml-rs v0.3.6
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling drone-macros-core v0.8.3
[INFO] [stderr]    Compiling futures-channel-preview v0.2.2
[INFO] [stderr]    Compiling futures-io-preview v0.2.2
[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` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c553b163d5362a4a80c008d43d557b9881c1057e39cfbf6a8df9ef3b6cd8d303", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c553b163d5362a4a80c008d43d557b9881c1057e39cfbf6a8df9ef3b6cd8d303", kill_on_drop: false }`
[INFO] [stdout] c553b163d5362a4a80c008d43d557b9881c1057e39cfbf6a8df9ef3b6cd8d303
