[INFO] updating cached repository https://github.com/Istar-Eldritch/biot
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0639deea738c53e679bd45baa1bb5e6eb2d8f5ae
[INFO] testing Istar-Eldritch/biot against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FIstar-Eldritch%2Fbiot" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Istar-Eldritch/biot 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 git repo https://github.com/Istar-Eldritch/biot
[INFO] finished tweaking git repo https://github.com/Istar-Eldritch/biot
[INFO] tweaked toml for git repo https://github.com/Istar-Eldritch/biot written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Istar-Eldritch/biot already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: dependency (clap) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[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] 7a9c2b4fa02b16d0562835b15fbadd840afd094e759483add1fa25a6b0d6d229
[INFO] running `"docker" "start" "-a" "7a9c2b4fa02b16d0562835b15fbadd840afd094e759483add1fa25a6b0d6d229"`
[INFO] [stderr] warning: dependency (clap) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling clap v2.24.1
[INFO] [stderr]    Compiling biot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `find_consensus`
[INFO] [stderr]   --> src/biot/motifs.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn find_consensus(dna: Vec<String>, k: i32) -> Vec<usize> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[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(slice_patterns)]
[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 `biot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "7a9c2b4fa02b16d0562835b15fbadd840afd094e759483add1fa25a6b0d6d229"`
[INFO] running `"docker" "rm" "-f" "7a9c2b4fa02b16d0562835b15fbadd840afd094e759483add1fa25a6b0d6d229"`
[INFO] [stdout] 7a9c2b4fa02b16d0562835b15fbadd840afd094e759483add1fa25a6b0d6d229