[INFO] updating cached repository samzhuwj/substrate-contracts-adder
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/samzhuwj/substrate-contracts-adder
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/samzhuwj/substrate-contracts-adder" "work/ex/beta-1.37-6/sources/1.36.0/gh/samzhuwj/substrate-contracts-adder"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/samzhuwj/substrate-contracts-adder'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/samzhuwj/substrate-contracts-adder" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/samzhuwj/substrate-contracts-adder"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/samzhuwj/substrate-contracts-adder'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ce517faaf3e2ec98dbc8925f0395a48304bb0f67
[INFO] sha for GitHub repo samzhuwj/substrate-contracts-adder: ce517faaf3e2ec98dbc8925f0395a48304bb0f67
[INFO] validating manifest of samzhuwj/substrate-contracts-adder 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 samzhuwj/substrate-contracts-adder 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 samzhuwj/substrate-contracts-adder
[INFO] finished frobbing samzhuwj/substrate-contracts-adder
[INFO] frobbed toml for samzhuwj/substrate-contracts-adder written to work/ex/beta-1.37-6/sources/1.36.0/gh/samzhuwj/substrate-contracts-adder/Cargo.toml
[INFO] started frobbing samzhuwj/substrate-contracts-adder
[INFO] finished frobbing samzhuwj/substrate-contracts-adder
[INFO] frobbed toml for samzhuwj/substrate-contracts-adder written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/samzhuwj/substrate-contracts-adder/Cargo.toml
[INFO] crate samzhuwj/substrate-contracts-adder already has a lockfile, it will not be regenerated
[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 samzhuwj/substrate-contracts-adder 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-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/samzhuwj/substrate-contracts-adder:/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] ede78ca8ed57cde02f5754bd698263b63448609f515a7c6cd5bd3b080b71c6c0
[INFO] running `"docker" "start" "-a" "ede78ca8ed57cde02f5754bd698263b63448609f515a7c6cd5bd3b080b71c6c0"`
[INFO] [stderr] warning: unused manifest key: dependencies.parity-codec-derive.default-feature
[INFO] [stderr] warning: unused manifest key: dependencies.parity-codec.default-feature
[INFO] [stderr] warning: unused manifest key: profile.realse
[INFO] [stderr]    Compiling proc-macro2 v0.4.23
[INFO] [stderr]    Compiling wee_alloc v0.4.2
[INFO] [stderr]    Compiling memory_units v0.4.0
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling parity-codec v2.1.5
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/wee_alloc-0.4.2/src/lib.rs:228:1
[INFO] [stderr]     |
[INFO] [stderr] 228 | #![feature(alloc, allocator_api, core_intrinsics)]
[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 `wee_alloc`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "ede78ca8ed57cde02f5754bd698263b63448609f515a7c6cd5bd3b080b71c6c0"`
[INFO] running `"docker" "rm" "-f" "ede78ca8ed57cde02f5754bd698263b63448609f515a7c6cd5bd3b080b71c6c0"`
[INFO] [stdout] ede78ca8ed57cde02f5754bd698263b63448609f515a7c6cd5bd3b080b71c6c0