[INFO] crate levenshtein_automata 0.1.1 is already in cache
[INFO] testing levenshtein_automata-0.1.1 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate levenshtein_automata 0.1.1 into work/builds/worker-2/source
[INFO] validating manifest of crates.io crate levenshtein_automata 0.1.1 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate levenshtein_automata 0.1.1
[INFO] finished tweaking crates.io crate levenshtein_automata 0.1.1
[INFO] tweaked toml for crates.io crate levenshtein_automata 0.1.1 written to work/builds/worker-2/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 89fc2ed8525ddc6d5037fc9591ca439bf84d88eab106e8f821991f808d96fe16
[INFO] running `"docker" "start" "-a" "89fc2ed8525ddc6d5037fc9591ca439bf84d88eab106e8f821991f808d96fe16"`
[INFO] [stderr]    Compiling levenshtein_automata v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `"docker" "inspect" "89fc2ed8525ddc6d5037fc9591ca439bf84d88eab106e8f821991f808d96fe16"`
[INFO] running `"docker" "rm" "-f" "89fc2ed8525ddc6d5037fc9591ca439bf84d88eab106e8f821991f808d96fe16"`
[INFO] [stdout] 89fc2ed8525ddc6d5037fc9591ca439bf84d88eab106e8f821991f808d96fe16
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/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" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4fde4a016b8ec9d4e3fa90e6ad058b561b766e32586cc3510e633ddabbc6a2eb
[INFO] running `"docker" "start" "-a" "4fde4a016b8ec9d4e3fa90e6ad058b561b766e32586cc3510e633ddabbc6a2eb"`
[INFO] [stderr]    Compiling levenshtein v1.0.4
[INFO] [stderr]    Compiling levenshtein_automata v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]   --> src/lib.rs:35:19
[INFO] [stderr]    |
[INFO] [stderr] 35 | #![cfg_attr(test, feature(test))]
[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 E0554`.
[INFO] [stderr] error: could not compile `levenshtein_automata`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4fde4a016b8ec9d4e3fa90e6ad058b561b766e32586cc3510e633ddabbc6a2eb"`
[INFO] running `"docker" "rm" "-f" "4fde4a016b8ec9d4e3fa90e6ad058b561b766e32586cc3510e633ddabbc6a2eb"`
[INFO] [stdout] 4fde4a016b8ec9d4e3fa90e6ad058b561b766e32586cc3510e633ddabbc6a2eb