[INFO] updating cached repository rink1969/rust-ckb-contract
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rink1969/rust-ckb-contract
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rink1969/rust-ckb-contract" "work/ex/beta-1.38-1/sources/1.37.0/gh/rink1969/rust-ckb-contract"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/rink1969/rust-ckb-contract'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rink1969/rust-ckb-contract" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rink1969/rust-ckb-contract"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rink1969/rust-ckb-contract'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bec794f8780c69d431299f1169fc8d701e3e34d6
[INFO] sha for GitHub repo rink1969/rust-ckb-contract: bec794f8780c69d431299f1169fc8d701e3e34d6
[INFO] validating manifest of rink1969/rust-ckb-contract 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 rink1969/rust-ckb-contract 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 rink1969/rust-ckb-contract
[INFO] finished frobbing rink1969/rust-ckb-contract
[INFO] frobbed toml for rink1969/rust-ckb-contract written to work/ex/beta-1.38-1/sources/1.37.0/gh/rink1969/rust-ckb-contract/Cargo.toml
[INFO] started frobbing rink1969/rust-ckb-contract
[INFO] finished frobbing rink1969/rust-ckb-contract
[INFO] frobbed toml for rink1969/rust-ckb-contract written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rink1969/rust-ckb-contract/Cargo.toml
[INFO] crate rink1969/rust-ckb-contract 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 rink1969/rust-ckb-contract 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-7/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/rink1969/rust-ckb-contract:/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] c12de389b38b204dcf8568afae281340fe4c17f56ed4dc1ce8a33b5f8b77022f
[INFO] running `"docker" "start" "-a" "c12de389b38b204dcf8568afae281340fe4c17f56ed4dc1ce8a33b5f8b77022f"`
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling constant_time_eq v0.1.3
[INFO] [stderr]    Compiling byte-tools v0.2.0
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling arrayref v0.3.5
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling blake2-rfc v0.2.18 (https://github.com/cesarb/blake2-rfc#dc5485cc)
[INFO] [stderr]    Compiling generic-array v0.8.3
[INFO] [stderr]    Compiling digest v0.6.2
[INFO] [stderr]    Compiling crypto-mac v0.4.0
[INFO] [stderr]    Compiling block-buffer v0.2.0
[INFO] [stderr]    Compiling hmac v0.4.2
[INFO] [stderr]    Compiling sha2 v0.6.0
[INFO] [stderr]    Compiling hmac-drbg v0.1.2
[INFO] [stderr]    Compiling libsecp256k1 v0.2.2
[INFO] [stderr]    Compiling demo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(asm)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![feature(ptr_offset_from)]
[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 `demo`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c12de389b38b204dcf8568afae281340fe4c17f56ed4dc1ce8a33b5f8b77022f"`
[INFO] running `"docker" "rm" "-f" "c12de389b38b204dcf8568afae281340fe4c17f56ed4dc1ce8a33b5f8b77022f"`
[INFO] [stdout] c12de389b38b204dcf8568afae281340fe4c17f56ed4dc1ce8a33b5f8b77022f