[INFO] crate hs100api 0.1.1 is already in cache
[INFO] testing hs100api-0.1.1 against 1.38.0 for beta-1.39-1
[INFO] extracting crate hs100api 0.1.1 into work/builds/worker-7/source
[INFO] validating manifest of crates.io crate hs100api 0.1.1 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 hs100api 0.1.1
[INFO] finished tweaking crates.io crate hs100api 0.1.1
[INFO] tweaked toml for crates.io crate hs100api 0.1.1 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] 9a865ab01ec094b5b3462f7b1440c727f8aef068e37daa2082cb17ca3a32b783
[INFO] running `"docker" "start" "-a" "9a865ab01ec094b5b3462f7b1440c727f8aef068e37daa2082cb17ca3a32b783"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling hs100api v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `"docker" "inspect" "9a865ab01ec094b5b3462f7b1440c727f8aef068e37daa2082cb17ca3a32b783"`
[INFO] running `"docker" "rm" "-f" "9a865ab01ec094b5b3462f7b1440c727f8aef068e37daa2082cb17ca3a32b783"`
[INFO] [stdout] 9a865ab01ec094b5b3462f7b1440c727f8aef068e37daa2082cb17ca3a32b783
[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" "test" "--frozen" "--no-run"`
[INFO] [stdout] b2247f9653a4914028be716d6132dd10bedd40829bf8487e4dfe20b9b5582090
[INFO] running `"docker" "start" "-a" "b2247f9653a4914028be716d6132dd10bedd40829bf8487e4dfe20b9b5582090"`
[INFO] [stderr]    Compiling hs100api v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0599]: no method named `split_off` found for type `std::result::Result<std::vec::Vec<u8>, error::Error>` in the current scope
[INFO] [stderr]    --> src/lib.rs:136:38
[INFO] [stderr]     |
[INFO] [stderr] 136 |         let resp = decrypt(&mut data.split_off(4));
[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 E0599`.
[INFO] [stderr] error: Could not compile `hs100api`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b2247f9653a4914028be716d6132dd10bedd40829bf8487e4dfe20b9b5582090"`
[INFO] running `"docker" "rm" "-f" "b2247f9653a4914028be716d6132dd10bedd40829bf8487e4dfe20b9b5582090"`
[INFO] [stdout] b2247f9653a4914028be716d6132dd10bedd40829bf8487e4dfe20b9b5582090