[INFO] updating cached repository pepyakin/substrate-contracts-adder
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pepyakin/substrate-contracts-adder
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pepyakin/substrate-contracts-adder" "work/ex/beta-1.38-1/sources/1.37.0/gh/pepyakin/substrate-contracts-adder"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/pepyakin/substrate-contracts-adder'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pepyakin/substrate-contracts-adder" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pepyakin/substrate-contracts-adder"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pepyakin/substrate-contracts-adder'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 12f8f105ad48734e69461ae1f6630c24ba3d2441
[INFO] sha for GitHub repo pepyakin/substrate-contracts-adder: 12f8f105ad48734e69461ae1f6630c24ba3d2441
[INFO] validating manifest of pepyakin/substrate-contracts-adder 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 pepyakin/substrate-contracts-adder 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 pepyakin/substrate-contracts-adder
[INFO] finished frobbing pepyakin/substrate-contracts-adder
[INFO] frobbed toml for pepyakin/substrate-contracts-adder written to work/ex/beta-1.38-1/sources/1.37.0/gh/pepyakin/substrate-contracts-adder/Cargo.toml
[INFO] started frobbing pepyakin/substrate-contracts-adder
[INFO] finished frobbing pepyakin/substrate-contracts-adder
[INFO] frobbed toml for pepyakin/substrate-contracts-adder written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pepyakin/substrate-contracts-adder/Cargo.toml
[INFO] crate pepyakin/substrate-contracts-adder 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 pepyakin/substrate-contracts-adder against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pepyakin/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 9aba514094fd54b98d001405ecbe742e273544369c8afaa9b78122045a121600
[INFO] running `"docker" "start" "-a" "9aba514094fd54b98d001405ecbe742e273544369c8afaa9b78122045a121600"`
[INFO] [stderr]    Compiling wee_alloc v0.4.2
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling memory_units v0.4.0
[INFO] [stderr]    Compiling parity-codec v2.0.3
[INFO] [stderr]    Compiling parity-codec-derive v2.0.4
[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/parity-codec-2.0.3/src/lib.rs:20:35
[INFO] [stderr]    |
[INFO] [stderr] 20 | #![cfg_attr(not(feature = "std"), feature(alloc))]
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^
[INFO] [stderr] 
[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/parity-codec-derive-2.0.4/src/lib.rs:18:35
[INFO] [stderr]    |
[INFO] [stderr] 18 | #![cfg_attr(not(feature = "std"), feature(core_intrinsics))]
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[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/parity-codec-derive-2.0.4/src/lib.rs:19:35
[INFO] [stderr]    |
[INFO] [stderr] 19 | #![cfg_attr(not(feature = "std"), feature(alloc))]
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `parity-codec-derive`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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 `parity-codec`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "9aba514094fd54b98d001405ecbe742e273544369c8afaa9b78122045a121600"`
[INFO] running `"docker" "rm" "-f" "9aba514094fd54b98d001405ecbe742e273544369c8afaa9b78122045a121600"`
[INFO] [stdout] 9aba514094fd54b98d001405ecbe742e273544369c8afaa9b78122045a121600