[INFO] updating cached repository ellipticoin/rust-ellipticoin
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ellipticoin/rust-ellipticoin
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ellipticoin/rust-ellipticoin" "work/ex/beta-1.38-1/sources/1.37.0/gh/ellipticoin/rust-ellipticoin"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ellipticoin/rust-ellipticoin'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ellipticoin/rust-ellipticoin" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ellipticoin/rust-ellipticoin"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ellipticoin/rust-ellipticoin'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8618cd0a412fd83d06f9867ddeca2701224cd68c
[INFO] sha for GitHub repo ellipticoin/rust-ellipticoin: 8618cd0a412fd83d06f9867ddeca2701224cd68c
[INFO] validating manifest of ellipticoin/rust-ellipticoin 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 ellipticoin/rust-ellipticoin 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 ellipticoin/rust-ellipticoin
[INFO] finished frobbing ellipticoin/rust-ellipticoin
[INFO] frobbed toml for ellipticoin/rust-ellipticoin written to work/ex/beta-1.38-1/sources/1.37.0/gh/ellipticoin/rust-ellipticoin/Cargo.toml
[INFO] started frobbing ellipticoin/rust-ellipticoin
[INFO] finished frobbing ellipticoin/rust-ellipticoin
[INFO] frobbed toml for ellipticoin/rust-ellipticoin written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ellipticoin/rust-ellipticoin/Cargo.toml
[INFO] crate ellipticoin/rust-ellipticoin 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/ellipticoin/rust-ellipticoin/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[INFO] the lockfile is outdated, regenerating it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 ellipticoin/rust-ellipticoin 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-4/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/ellipticoin/rust-ellipticoin:/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] fd332b5537700d8249f10911197ef401b8b26e8a3305aaf0565656e97fce6f24
[INFO] running `"docker" "start" "-a" "fd332b5537700d8249f10911197ef401b8b26e8a3305aaf0565656e97fce6f24"`
[INFO] [stderr]    Compiling wee_alloc v0.4.4
[INFO] [stderr]    Compiling wasm-rpc v0.2.12
[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/wasm-rpc-0.2.12/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / #![feature(
[INFO] [stderr] 2 | |     set_stdio,
[INFO] [stderr] 3 | |     alloc_error_handler,
[INFO] [stderr] 4 | |     core_intrinsics,
[INFO] [stderr] 5 | |     panic_info_message,
[INFO] [stderr] 6 | |     try_trait
[INFO] [stderr] 7 | | )]
[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] error: Could not compile `wasm-rpc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "fd332b5537700d8249f10911197ef401b8b26e8a3305aaf0565656e97fce6f24"`
[INFO] running `"docker" "rm" "-f" "fd332b5537700d8249f10911197ef401b8b26e8a3305aaf0565656e97fce6f24"`
[INFO] [stdout] fd332b5537700d8249f10911197ef401b8b26e8a3305aaf0565656e97fce6f24