[INFO] crate siphash 0.0.5 is already in cache
[INFO] extracting crate siphash 0.0.5 into work/ex/beta-1.38-1/sources/1.37.0/reg/siphash/0.0.5
[INFO] extracting crate siphash 0.0.5 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/siphash/0.0.5
[INFO] validating manifest of siphash-0.0.5 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 siphash-0.0.5 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 siphash-0.0.5
[INFO] finished frobbing siphash-0.0.5
[INFO] frobbed toml for siphash-0.0.5 written to work/ex/beta-1.38-1/sources/1.37.0/reg/siphash/0.0.5/Cargo.toml
[INFO] started frobbing siphash-0.0.5
[INFO] finished frobbing siphash-0.0.5
[INFO] frobbed toml for siphash-0.0.5 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/siphash/0.0.5/Cargo.toml
[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 siphash-0.0.5 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-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/siphash/0.0.5:/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] 59ec131c36b072bbbf961faddbcdf18486124907a90f74f053536571a61980fc
[INFO] running `"docker" "start" "-a" "59ec131c36b072bbbf961faddbcdf18486124907a90f74f053536571a61980fc"`
[INFO] [stderr]    Compiling siphash v0.0.5 (/opt/crater/workdir)
[INFO] [stderr] error[E0422]: cannot find struct, variant or union type `Slice` in module `core::raw`
[INFO] [stderr]   --> src/lib.rs:56:34
[INFO] [stderr]    |
[INFO] [stderr] 56 |             transmute(core::raw::Slice {
[INFO] [stderr]    |                                  ^^^^^ not found in `core::raw`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(plugin, no_std, raw)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![cfg_attr(not(test), feature(core_slice_ext))]
[INFO] [stderr]   |                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0422, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0422`.
[INFO] [stderr] error: Could not compile `siphash`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "59ec131c36b072bbbf961faddbcdf18486124907a90f74f053536571a61980fc"`
[INFO] running `"docker" "rm" "-f" "59ec131c36b072bbbf961faddbcdf18486124907a90f74f053536571a61980fc"`
[INFO] [stdout] 59ec131c36b072bbbf961faddbcdf18486124907a90f74f053536571a61980fc