[INFO] fetching crate msp430fr6972 0.2.1...
[INFO] documenting msp430fr6972-0.2.1 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate msp430fr6972 0.2.1 into /workspace/builds/worker-61/source
[INFO] validating manifest of crates.io crate msp430fr6972 0.2.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate msp430fr6972 0.2.1
[INFO] finished tweaking crates.io crate msp430fr6972 0.2.1
[INFO] tweaked toml for crates.io crate msp430fr6972 0.2.1 written to /workspace/builds/worker-61/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8820b0d81bebd11a2d46f8a925effd64823169b59c9671f9c0041f1f8185397c
[INFO] running `Command { std: "docker" "start" "-a" "8820b0d81bebd11a2d46f8a925effd64823169b59c9671f9c0041f1f8185397c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8820b0d81bebd11a2d46f8a925effd64823169b59c9671f9c0041f1f8185397c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8820b0d81bebd11a2d46f8a925effd64823169b59c9671f9c0041f1f8185397c", kill_on_drop: false }`
[INFO] [stdout] 8820b0d81bebd11a2d46f8a925effd64823169b59c9671f9c0041f1f8185397c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 147a6dd3457d698e5b90cc5d3cf120799409e860d241f3ddb27cf7fefd52a64f
[INFO] running `Command { std: "docker" "start" "-a" "147a6dd3457d698e5b90cc5d3cf120799409e860d241f3ddb27cf7fefd52a64f", 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] [stderr]    Compiling msp430fr6972 v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking msp430 v0.2.2
[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/msp430-0.2.2/src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(llvm_asm)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `msp430`
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "147a6dd3457d698e5b90cc5d3cf120799409e860d241f3ddb27cf7fefd52a64f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "147a6dd3457d698e5b90cc5d3cf120799409e860d241f3ddb27cf7fefd52a64f", kill_on_drop: false }`
[INFO] [stdout] 147a6dd3457d698e5b90cc5d3cf120799409e860d241f3ddb27cf7fefd52a64f
