[INFO] crate casperlabs-contract-ffi 0.13.0 is already in cache
[INFO] testing casperlabs-contract-ffi-0.13.0 against 1.38.0 for beta-1.39-1
[INFO] extracting crate casperlabs-contract-ffi 0.13.0 into work/builds/worker-7/source
[INFO] validating manifest of crates.io crate casperlabs-contract-ffi 0.13.0 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate casperlabs-contract-ffi 0.13.0
[INFO] finished tweaking crates.io crate casperlabs-contract-ffi 0.13.0
[INFO] tweaked toml for crates.io crate casperlabs-contract-ffi 0.13.0 written to work/builds/worker-7/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 56c124dc8a2a5717e8cca99e78d34ae256f061d59ca338700d1b1cfe799e549b
[INFO] running `"docker" "start" "-a" "56c124dc8a2a5717e8cca99e78d34ae256f061d59ca338700d1b1cfe799e549b"`
[INFO] [stderr]    Compiling binascii v0.1.2
[INFO] [stderr]    Compiling uint v0.7.1
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]    Compiling blake2 v0.8.1
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling casperlabs-contract-ffi v0.13.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `super::alloc::collections::TryReserveError`
[INFO] [stderr]  --> src/bytesrepr.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use super::alloc::collections::TryReserveError;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `TryReserveError` in `collections`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | / #![feature(
[INFO] [stderr] 3 | |     allocator_api,
[INFO] [stderr] 4 | |     core_intrinsics,
[INFO] [stderr] 5 | |     lang_items,
[INFO] [stderr] 6 | |     alloc_error_handler,
[INFO] [stderr] 7 | |     try_reserve
[INFO] [stderr] 8 | | )]
[INFO] [stderr]   | |__^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `casperlabs-contract-ffi`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "56c124dc8a2a5717e8cca99e78d34ae256f061d59ca338700d1b1cfe799e549b"`
[INFO] running `"docker" "rm" "-f" "56c124dc8a2a5717e8cca99e78d34ae256f061d59ca338700d1b1cfe799e549b"`
[INFO] [stdout] 56c124dc8a2a5717e8cca99e78d34ae256f061d59ca338700d1b1cfe799e549b