[INFO] fetching crate msp430fr2355 0.4.1...
[INFO] documenting msp430fr2355-0.4.1 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate msp430fr2355 0.4.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate msp430fr2355 0.4.1 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate msp430fr2355 0.4.1
[INFO] finished tweaking crates.io crate msp430fr2355 0.4.1
[INFO] tweaked toml for crates.io crate msp430fr2355 0.4.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "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" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 360e6159676d19ca1c363b224d74915d8dc95d16fc8807a922249bafd3c47be4
[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" "360e6159676d19ca1c363b224d74915d8dc95d16fc8807a922249bafd3c47be4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "360e6159676d19ca1c363b224d74915d8dc95d16fc8807a922249bafd3c47be4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "360e6159676d19ca1c363b224d74915d8dc95d16fc8807a922249bafd3c47be4", kill_on_drop: false }`
[INFO] [stdout] 360e6159676d19ca1c363b224d74915d8dc95d16fc8807a922249bafd3c47be4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6d7772941caaa6c2b0146f64178750eec7aab5285fa8239ef3be8b487b21aa4f
[INFO] running `Command { std: "docker" "start" "-a" "6d7772941caaa6c2b0146f64178750eec7aab5285fa8239ef3be8b487b21aa4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling msp430fr2355 v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking msp430-atomic v0.1.2
[INFO] [stderr]     Checking vcell v0.1.2
[INFO] [stderr]    Compiling bare-metal v0.2.5
[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/msp430-atomic-0.1.2/src/lib.rs:71:1
[INFO] [stdout]    |
[INFO] [stdout] 71 | #![feature(llvm_asm)]
[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/msp430-atomic-0.1.2/src/lib.rs:72:1
[INFO] [stdout]    |
[INFO] [stdout] 72 | #![feature(const_fn)]
[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/msp430-atomic-0.1.2/src/lib.rs:73:42
[INFO] [stdout]    |
[INFO] [stdout] 73 | #![cfg_attr(not(target_arch = "msp430"), feature(core_intrinsics))]
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `msp430-atomic`.
[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" "6d7772941caaa6c2b0146f64178750eec7aab5285fa8239ef3be8b487b21aa4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d7772941caaa6c2b0146f64178750eec7aab5285fa8239ef3be8b487b21aa4f", kill_on_drop: false }`
[INFO] [stdout] 6d7772941caaa6c2b0146f64178750eec7aab5285fa8239ef3be8b487b21aa4f
