[INFO] updating cached repository wasmerio/rust-wasm-simd128-example
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wasmerio/rust-wasm-simd128-example
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wasmerio/rust-wasm-simd128-example" "work/ex/beta-1.38-1/sources/1.37.0/gh/wasmerio/rust-wasm-simd128-example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/wasmerio/rust-wasm-simd128-example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wasmerio/rust-wasm-simd128-example" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wasmerio/rust-wasm-simd128-example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wasmerio/rust-wasm-simd128-example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 245aa0c0bb2ae32fa063ffc33300bd7c64a00ece
[INFO] sha for GitHub repo wasmerio/rust-wasm-simd128-example: 245aa0c0bb2ae32fa063ffc33300bd7c64a00ece
[INFO] validating manifest of wasmerio/rust-wasm-simd128-example 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 wasmerio/rust-wasm-simd128-example 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 wasmerio/rust-wasm-simd128-example
[INFO] removed path dependency core_arch from wasmerio/rust-wasm-simd128-example
[INFO] finished frobbing wasmerio/rust-wasm-simd128-example
[INFO] frobbed toml for wasmerio/rust-wasm-simd128-example written to work/ex/beta-1.38-1/sources/1.37.0/gh/wasmerio/rust-wasm-simd128-example/Cargo.toml
[INFO] started frobbing wasmerio/rust-wasm-simd128-example
[INFO] removed path dependency core_arch from wasmerio/rust-wasm-simd128-example
[INFO] finished frobbing wasmerio/rust-wasm-simd128-example
[INFO] frobbed toml for wasmerio/rust-wasm-simd128-example written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wasmerio/rust-wasm-simd128-example/Cargo.toml
[INFO] crate wasmerio/rust-wasm-simd128-example 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] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wasmerio/rust-wasm-simd128-example/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 wasmerio/rust-wasm-simd128-example 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-0/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/wasmerio/rust-wasm-simd128-example:/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] ddc2d509888c520116a12f8bd90730a31715ca4e0dd10a10ffa0194e16703975
[INFO] running `"docker" "start" "-a" "ddc2d509888c520116a12f8bd90730a31715ca4e0dd10a10ffa0194e16703975"`
[INFO] [stderr] warning: dependency (core_arch) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling core_arch v0.1.5
[INFO] [stderr] error[E0658]: non-builtin inner attributes are unstable
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/core_arch-0.1.5/src/simd.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![rustfmt::skip]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/54726
[INFO] [stderr] 
[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/core_arch-0.1.5/src/lib.rs:5:1
[INFO] [stderr]    |
[INFO] [stderr] 5  | / #![feature(
[INFO] [stderr] 6  | |     const_fn,
[INFO] [stderr] 7  | |     const_fn_union,
[INFO] [stderr] 8  | |     link_llvm_intrinsics,
[INFO] [stderr] ...  |
[INFO] [stderr] 35 | |     external_doc
[INFO] [stderr] 36 | | )]
[INFO] [stderr]    | |__^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `core_arch`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ddc2d509888c520116a12f8bd90730a31715ca4e0dd10a10ffa0194e16703975"`
[INFO] running `"docker" "rm" "-f" "ddc2d509888c520116a12f8bd90730a31715ca4e0dd10a10ffa0194e16703975"`
[INFO] [stdout] ddc2d509888c520116a12f8bd90730a31715ca4e0dd10a10ffa0194e16703975