[INFO] updating cached repository KuroAku/complex
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/KuroAku/complex
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/KuroAku/complex" "work/ex/beta-1.38-1/sources/1.37.0/gh/KuroAku/complex"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/KuroAku/complex'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/KuroAku/complex" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/KuroAku/complex"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/KuroAku/complex'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8b9c3f4d9886305e84e7fe532f2ddc9c217e9d9e
[INFO] sha for GitHub repo KuroAku/complex: 8b9c3f4d9886305e84e7fe532f2ddc9c217e9d9e
[INFO] validating manifest of KuroAku/complex 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 KuroAku/complex 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 KuroAku/complex
[INFO] finished frobbing KuroAku/complex
[INFO] frobbed toml for KuroAku/complex written to work/ex/beta-1.38-1/sources/1.37.0/gh/KuroAku/complex/Cargo.toml
[INFO] started frobbing KuroAku/complex
[INFO] finished frobbing KuroAku/complex
[INFO] frobbed toml for KuroAku/complex written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/KuroAku/complex/Cargo.toml
[INFO] crate KuroAku/complex 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 KuroAku/complex 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-0/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/KuroAku/complex:/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] 425b0c239c4f5bec49593afe40881c429f1708c58d391e10da38b15287a7b776
[INFO] running `"docker" "start" "-a" "425b0c239c4f5bec49593afe40881c429f1708c58d391e10da38b15287a7b776"`
[INFO] [stderr]    Compiling libc v0.2.33
[INFO] [stderr]    Compiling text_io v0.1.6
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling complex 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(use_extern_macros)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/complex/parser.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 | /     lazy_static! {
[INFO] [stderr] 36 | |         static ref RE: Regex = Regex::new(
[INFO] [stderr] 37 | |             r"^\s*(?:(-?)(\d+(?:\.\d+)?)\s*(?:([\+-])\s*(\d+(?:\.\d+)?)j)?|(-?)(\d+(?:\.\d+)?)j\s*(?:([\+-])\s*(\d+(?:\.\d+)?))?)\s*$"
[INFO] [stderr] 38 | |         ).unwrap();
[INFO] [stderr] 39 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[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 `complex`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "425b0c239c4f5bec49593afe40881c429f1708c58d391e10da38b15287a7b776"`
[INFO] running `"docker" "rm" "-f" "425b0c239c4f5bec49593afe40881c429f1708c58d391e10da38b15287a7b776"`
[INFO] [stdout] 425b0c239c4f5bec49593afe40881c429f1708c58d391e10da38b15287a7b776