[INFO] updating cached repository skammer/rusty-chips
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/skammer/rusty-chips
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/skammer/rusty-chips" "work/ex/beta-1.38-1/sources/1.37.0/gh/skammer/rusty-chips"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/skammer/rusty-chips'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/skammer/rusty-chips" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/skammer/rusty-chips"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/skammer/rusty-chips'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a025f60659f3db51ebda5836664fdc111c3612c7
[INFO] sha for GitHub repo skammer/rusty-chips: a025f60659f3db51ebda5836664fdc111c3612c7
[INFO] validating manifest of skammer/rusty-chips 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 skammer/rusty-chips 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 skammer/rusty-chips
[INFO] finished frobbing skammer/rusty-chips
[INFO] frobbed toml for skammer/rusty-chips written to work/ex/beta-1.38-1/sources/1.37.0/gh/skammer/rusty-chips/Cargo.toml
[INFO] started frobbing skammer/rusty-chips
[INFO] finished frobbing skammer/rusty-chips
[INFO] frobbed toml for skammer/rusty-chips written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/skammer/rusty-chips/Cargo.toml
[INFO] crate skammer/rusty-chips 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing skammer/rusty-chips 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-2/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/skammer/rusty-chips:/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] 662e6337216b99389f8d2c6ab504490ea182603e5ae1dc33016ab478f0448996
[INFO] running `"docker" "start" "-a" "662e6337216b99389f8d2c6ab504490ea182603e5ae1dc33016ab478f0448996"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/crater/workdir/src/main.rs
[INFO] [stderr]    Compiling rusty-chips v0.0.1 (/opt/crater/workdir)
[INFO] [stderr]    Compiling itertools-num v0.1.1
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(advanced_slice_patterns, slice_patterns)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: merged into `#![feature(slice_patterns)]`
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(advanced_slice_patterns, slice_patterns)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(advanced_slice_patterns, slice_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0557.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `rusty-chips`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "662e6337216b99389f8d2c6ab504490ea182603e5ae1dc33016ab478f0448996"`
[INFO] running `"docker" "rm" "-f" "662e6337216b99389f8d2c6ab504490ea182603e5ae1dc33016ab478f0448996"`
[INFO] [stdout] 662e6337216b99389f8d2c6ab504490ea182603e5ae1dc33016ab478f0448996