[INFO] crate msp430g2211 0.1.4 is already in cache
[INFO] testing msp430g2211-0.1.4 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate msp430g2211 0.1.4 into work/builds/worker-5/source
[INFO] validating manifest of crates.io crate msp430g2211 0.1.4 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate msp430g2211 0.1.4
[INFO] finished tweaking crates.io crate msp430g2211 0.1.4
[INFO] tweaked toml for crates.io crate msp430g2211 0.1.4 written to work/builds/worker-5/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] e78afa65803b3f5e99ee5f9c772fd1107a2805d4309055f35fc6a9c488206e69
[INFO] running `"docker" "start" "-a" "e78afa65803b3f5e99ee5f9c772fd1107a2805d4309055f35fc6a9c488206e69"`
[INFO] [stderr]    Compiling bare-metal v0.1.3
[INFO] [stderr]    Compiling msp430-rt v0.1.3
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.3/src/lib.rs:5:35
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
[INFO] [stderr]   |                                   ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `bare-metal`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e78afa65803b3f5e99ee5f9c772fd1107a2805d4309055f35fc6a9c488206e69"`
[INFO] running `"docker" "rm" "-f" "e78afa65803b3f5e99ee5f9c772fd1107a2805d4309055f35fc6a9c488206e69"`
[INFO] [stdout] e78afa65803b3f5e99ee5f9c772fd1107a2805d4309055f35fc6a9c488206e69