[INFO] crate sc2-proxy 0.1.0 is already in cache
[INFO] extracting crate sc2-proxy 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/sc2-proxy/0.1.0
[INFO] extracting crate sc2-proxy 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/sc2-proxy/0.1.0
[INFO] validating manifest of sc2-proxy-0.1.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sc2-proxy-0.1.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sc2-proxy-0.1.0
[INFO] finished frobbing sc2-proxy-0.1.0
[INFO] frobbed toml for sc2-proxy-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/sc2-proxy/0.1.0/Cargo.toml
[INFO] started frobbing sc2-proxy-0.1.0
[INFO] finished frobbing sc2-proxy-0.1.0
[INFO] frobbed toml for sc2-proxy-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/sc2-proxy/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing sc2-proxy-0.1.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/sc2-proxy/0.1.0:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 79dfcc523f7f60e262617908d997141fefd6693a282d2c9e2f27da54b594cc11
[INFO] running `"docker" "start" "-a" "79dfcc523f7f60e262617908d997141fefd6693a282d2c9e2f27da54b594cc11"`
[INFO] [stderr]    Compiling protobuf v2.8.0
[INFO] [stderr]    Compiling shellexpand v1.0.0
[INFO] [stderr]    Compiling protoc v2.8.0
[INFO] [stderr]    Compiling portpicker v0.1.0
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling websocket v0.22.4
[INFO] [stderr]    Compiling dotenv v0.13.0
[INFO] [stderr]    Compiling protobuf-codegen v2.8.0
[INFO] [stderr]    Compiling protoc-rust v2.8.0
[INFO] [stderr]    Compiling sc2-proto v0.2.1
[INFO] [stderr]    Compiling sc2-proxy v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | #![feature(type_alias_enum_variants)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `RequestJoinGame` is imported redundantly
[INFO] [stderr]    --> src/game/lobby.rs:131:42
[INFO] [stderr]     |
[INFO] [stderr] 6   | use sc2_proto::sc2api::RequestJoinGame;
[INFO] [stderr]     |     ---------------------------------- the item `RequestJoinGame` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 131 |         use sc2_proto::sc2api::{Request, RequestJoinGame};
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[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 `sc2-proxy`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "79dfcc523f7f60e262617908d997141fefd6693a282d2c9e2f27da54b594cc11"`
[INFO] running `"docker" "rm" "-f" "79dfcc523f7f60e262617908d997141fefd6693a282d2c9e2f27da54b594cc11"`
[INFO] [stdout] 79dfcc523f7f60e262617908d997141fefd6693a282d2c9e2f27da54b594cc11