[INFO] updating cached repository https://github.com/meganehouser/rolo
[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] 388016fd1145b542c5b5ff143dc30dde032ae13c
[INFO] testing meganehouser/rolo against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeganehouser%2Frolo" "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/meganehouser/rolo 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/meganehouser/rolo
[INFO] finished tweaking git repo https://github.com/meganehouser/rolo
[INFO] tweaked toml for git repo https://github.com/meganehouser/rolo written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/meganehouser/rolo 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] 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] 86266941f279377a4691cf69baf80b273c064eefc0c2d811a91281f3f1610711
[INFO] running `"docker" "start" "-a" "86266941f279377a4691cf69baf80b273c064eefc0c2d811a91281f3f1610711"`
[INFO] [stderr]    Compiling miniz_oxide_c_api v0.1.2
[INFO] [stderr]    Compiling miniz_oxide v0.1.2
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling structopt-derive v0.2.10
[INFO] [stderr]    Compiling digest v0.7.2
[INFO] [stderr]    Compiling backtrace v0.3.8
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]    Compiling chrono v0.4.3
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling flate2 v1.0.1
[INFO] [stderr]    Compiling structopt v0.2.10
[INFO] [stderr]    Compiling rolo v0.1.0 (/opt/rustwide/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(vec_remove_item)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/main.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/rolo.rs:59:17
[INFO] [stderr]    |
[INFO] [stderr] 59 |                 return bail!("invalid src file path");
[INFO] [stderr]    |                 ^^^^^^^------------------------------
[INFO] [stderr]    |                 |      |
[INFO] [stderr]    |                 |      any code following this expression is unreachable
[INFO] [stderr]    |                 unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` 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 `rolo`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "86266941f279377a4691cf69baf80b273c064eefc0c2d811a91281f3f1610711"`
[INFO] running `"docker" "rm" "-f" "86266941f279377a4691cf69baf80b273c064eefc0c2d811a91281f3f1610711"`
[INFO] [stdout] 86266941f279377a4691cf69baf80b273c064eefc0c2d811a91281f3f1610711