[INFO] updating cached repository yfliuu/ros_64
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yfliuu/ros_64
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yfliuu/ros_64" "work/ex/beta-1.38-1/sources/1.37.0/gh/yfliuu/ros_64"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/yfliuu/ros_64'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yfliuu/ros_64" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yfliuu/ros_64"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yfliuu/ros_64'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2250446d5cb1843366b2004a9f8bd6fd03ce57a3
[INFO] sha for GitHub repo yfliuu/ros_64: 2250446d5cb1843366b2004a9f8bd6fd03ce57a3
[INFO] validating manifest of yfliuu/ros_64 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of yfliuu/ros_64 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing yfliuu/ros_64
[INFO] finished frobbing yfliuu/ros_64
[INFO] frobbed toml for yfliuu/ros_64 written to work/ex/beta-1.38-1/sources/1.37.0/gh/yfliuu/ros_64/Cargo.toml
[INFO] started frobbing yfliuu/ros_64
[INFO] finished frobbing yfliuu/ros_64
[INFO] frobbed toml for yfliuu/ros_64 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yfliuu/ros_64/Cargo.toml
[INFO] crate yfliuu/ros_64 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing yfliuu/ros_64 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yfliuu/ros_64:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 4d18cbe083b7707678506a9dab366a6c71da816716c8bcf6edbf10420c9708a7
[INFO] running `"docker" "start" "-a" "4d18cbe083b7707678506a9dab366a6c71da816716c8bcf6edbf10420c9708a7"`
[INFO] [stderr]    Compiling ux v0.1.3
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling usize_conversions v0.2.0
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling os_bootinfo v0.2.1
[INFO] [stderr]    Compiling bit_field v0.9.0
[INFO] [stderr]    Compiling spin v0.5.0
[INFO] [stderr]    Compiling pc-keyboard v0.3.1
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/usize_conversions-0.2.0/src/lib.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![feature(i128_type)]
[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]    Compiling volatile v0.2.6
[INFO] [stderr] error: Could not compile `usize_conversions`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "4d18cbe083b7707678506a9dab366a6c71da816716c8bcf6edbf10420c9708a7"`
[INFO] running `"docker" "rm" "-f" "4d18cbe083b7707678506a9dab366a6c71da816716c8bcf6edbf10420c9708a7"`
[INFO] [stdout] 4d18cbe083b7707678506a9dab366a6c71da816716c8bcf6edbf10420c9708a7