[INFO] crate libremarkable 0.3.2 is already in cache
[INFO] testing libremarkable-0.3.2 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate libremarkable 0.3.2 into work/builds/worker-5/source
[INFO] validating manifest of crates.io crate libremarkable 0.3.2 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 libremarkable 0.3.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate libremarkable 0.3.2
[INFO] tweaked toml for crates.io crate libremarkable 0.3.2 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] 7d3dab7ba0ea3b66376913fbf20061c4d3d7bb63b9cf9e4ed36c80aa9b4a96cf
[INFO] running `"docker" "start" "-a" "7d3dab7ba0ea3b66376913fbf20061c4d3d7bb63b9cf9e4ed36c80aa9b4a96cf"`
[INFO] [stderr]    Compiling atomic v0.4.5
[INFO] [stderr]    Compiling ioctl-gen v0.1.1
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling aabb-quadtree v0.1.0
[INFO] [stderr]    Compiling jobserver v0.1.17
[INFO] [stderr]    Compiling nix v0.8.1
[INFO] [stderr]    Compiling epoll v3.1.1
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling mmap v0.1.1
[INFO] [stderr]    Compiling stopwatch v0.0.7
[INFO] [stderr]    Compiling jpeg-decoder v0.1.16
[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/atomic-0.4.5/src/lib.rs:36:26
[INFO] [stderr]    |
[INFO] [stderr] 36 |     feature = "nightly", feature(const_fn, cfg_target_has_atomic, atomic_min_max)
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    Compiling ordered-float v0.5.2
[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 `atomic`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "7d3dab7ba0ea3b66376913fbf20061c4d3d7bb63b9cf9e4ed36c80aa9b4a96cf"`
[INFO] running `"docker" "rm" "-f" "7d3dab7ba0ea3b66376913fbf20061c4d3d7bb63b9cf9e4ed36c80aa9b4a96cf"`
[INFO] [stdout] 7d3dab7ba0ea3b66376913fbf20061c4d3d7bb63b9cf9e4ed36c80aa9b4a96cf