[INFO] updating cached repository brinchj/rustfest-fastware
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/brinchj/rustfest-fastware
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/brinchj/rustfest-fastware" "work/ex/beta-1.38-1/sources/1.37.0/gh/brinchj/rustfest-fastware"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/brinchj/rustfest-fastware'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/brinchj/rustfest-fastware" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/brinchj/rustfest-fastware"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/brinchj/rustfest-fastware'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4fc8894a9efddf3a679558b3ef32fb997dbd4772
[INFO] sha for GitHub repo brinchj/rustfest-fastware: 4fc8894a9efddf3a679558b3ef32fb997dbd4772
[INFO] validating manifest of brinchj/rustfest-fastware 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 brinchj/rustfest-fastware 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 brinchj/rustfest-fastware
[INFO] finished frobbing brinchj/rustfest-fastware
[INFO] frobbed toml for brinchj/rustfest-fastware written to work/ex/beta-1.38-1/sources/1.37.0/gh/brinchj/rustfest-fastware/Cargo.toml
[INFO] started frobbing brinchj/rustfest-fastware
[INFO] finished frobbing brinchj/rustfest-fastware
[INFO] frobbed toml for brinchj/rustfest-fastware written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/brinchj/rustfest-fastware/Cargo.toml
[INFO] crate brinchj/rustfest-fastware 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 brinchj/rustfest-fastware 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-6/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/brinchj/rustfest-fastware:/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] d34a8ca055cd6df13d3dda414bd0ea8d2285ddefb4ad3f040aaf285c1543c77e
[INFO] running `"docker" "start" "-a" "d34a8ca055cd6df13d3dda414bd0ea8d2285ddefb4ad3f040aaf285c1543c77e"`
[INFO] [stderr]    Compiling combine v3.2.0
[INFO] [stderr]    Compiling rustfest v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.75s
[INFO] running `"docker" "inspect" "d34a8ca055cd6df13d3dda414bd0ea8d2285ddefb4ad3f040aaf285c1543c77e"`
[INFO] running `"docker" "rm" "-f" "d34a8ca055cd6df13d3dda414bd0ea8d2285ddefb4ad3f040aaf285c1543c77e"`
[INFO] [stdout] d34a8ca055cd6df13d3dda414bd0ea8d2285ddefb4ad3f040aaf285c1543c77e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/brinchj/rustfest-fastware:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9848e8ecb18774094e0cfe527afea66d8ccda595e554c92516db1dcfdfc4e9b2
[INFO] running `"docker" "start" "-a" "9848e8ecb18774094e0cfe527afea66d8ccda595e554c92516db1dcfdfc4e9b2"`
[INFO] [stderr]    Compiling rustfest v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![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 `rustfest`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "9848e8ecb18774094e0cfe527afea66d8ccda595e554c92516db1dcfdfc4e9b2"`
[INFO] running `"docker" "rm" "-f" "9848e8ecb18774094e0cfe527afea66d8ccda595e554c92516db1dcfdfc4e9b2"`
[INFO] [stdout] 9848e8ecb18774094e0cfe527afea66d8ccda595e554c92516db1dcfdfc4e9b2