[INFO] updating cached repository Steampunkery/ecroguelike [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/Steampunkery/ecroguelike [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/Steampunkery/ecroguelike" "work/ex/beta-1.38-1/sources/1.37.0/gh/Steampunkery/ecroguelike"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Steampunkery/ecroguelike'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/Steampunkery/ecroguelike" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Steampunkery/ecroguelike"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Steampunkery/ecroguelike'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 71db632dca6df19c8d4f48184906550fc25fc8ee [INFO] sha for GitHub repo Steampunkery/ecroguelike: 71db632dca6df19c8d4f48184906550fc25fc8ee [INFO] validating manifest of Steampunkery/ecroguelike 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 Steampunkery/ecroguelike 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 Steampunkery/ecroguelike [INFO] finished frobbing Steampunkery/ecroguelike [INFO] frobbed toml for Steampunkery/ecroguelike written to work/ex/beta-1.38-1/sources/1.37.0/gh/Steampunkery/ecroguelike/Cargo.toml [INFO] started frobbing Steampunkery/ecroguelike [INFO] finished frobbing Steampunkery/ecroguelike [INFO] frobbed toml for Steampunkery/ecroguelike written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Steampunkery/ecroguelike/Cargo.toml [INFO] crate Steampunkery/ecroguelike 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 Steampunkery/ecroguelike 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/Steampunkery/ecroguelike:/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] d9fe8569495bb05f6085f840600e05cbc60acf43104f591cdf9f7e3d3255a824 [INFO] running `"docker" "start" "-a" "d9fe8569495bb05f6085f840600e05cbc60acf43104f591cdf9f7e3d3255a824"` [INFO] [stderr] Compiling tcod-sys v5.0.0 [INFO] [stderr] Compiling tcod v0.13.0 [INFO] [stderr] Compiling ecroguelike v0.1.0 (/opt/crater/workdir) [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(box_syntax)] [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 `ecroguelike`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "d9fe8569495bb05f6085f840600e05cbc60acf43104f591cdf9f7e3d3255a824"` [INFO] running `"docker" "rm" "-f" "d9fe8569495bb05f6085f840600e05cbc60acf43104f591cdf9f7e3d3255a824"` [INFO] [stdout] d9fe8569495bb05f6085f840600e05cbc60acf43104f591cdf9f7e3d3255a824