[INFO] updating cached repository rocurley/rs-partition
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rocurley/rs-partition
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rocurley/rs-partition" "work/ex/beta-1.37-6/sources/1.36.0/gh/rocurley/rs-partition"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/rocurley/rs-partition'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rocurley/rs-partition" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rocurley/rs-partition"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rocurley/rs-partition'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4ad2e2578e98dfc35e7bf7257cb3c740d78e169f
[INFO] sha for GitHub repo rocurley/rs-partition: 4ad2e2578e98dfc35e7bf7257cb3c740d78e169f
[INFO] validating manifest of rocurley/rs-partition on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rocurley/rs-partition on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rocurley/rs-partition
[INFO] finished frobbing rocurley/rs-partition
[INFO] frobbed toml for rocurley/rs-partition written to work/ex/beta-1.37-6/sources/1.36.0/gh/rocurley/rs-partition/Cargo.toml
[INFO] started frobbing rocurley/rs-partition
[INFO] finished frobbing rocurley/rs-partition
[INFO] frobbed toml for rocurley/rs-partition written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rocurley/rs-partition/Cargo.toml
[INFO] crate rocurley/rs-partition already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing rocurley/rs-partition against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/rocurley/rs-partition:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 0717aa7a20f486c4a681b1ad6e115958c55d2ff69e9b69bc32c4e95ebe8af956
[INFO] running `"docker" "start" "-a" "0717aa7a20f486c4a681b1ad6e115958c55d2ff69e9b69bc32c4e95ebe8af956"`
[INFO] [stderr]    Compiling spin v0.4.10
[INFO] [stderr]    Compiling wait-timeout v0.1.5
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling error-chain v0.5.0
[INFO] [stderr]    Compiling cpuprofiler v0.0.3
[INFO] [stderr]    Compiling structopt v0.2.14
[INFO] [stderr]    Compiling tempfile v3.0.6
[INFO] [stderr]    Compiling rusty-fork v0.2.1
[INFO] [stderr]    Compiling proptest v0.9.1
[INFO] [stderr]    Compiling rs-partition v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(nll)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(range_contains)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(range_is_empty)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `rs-partition`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0717aa7a20f486c4a681b1ad6e115958c55d2ff69e9b69bc32c4e95ebe8af956"`
[INFO] running `"docker" "rm" "-f" "0717aa7a20f486c4a681b1ad6e115958c55d2ff69e9b69bc32c4e95ebe8af956"`
[INFO] [stdout] 0717aa7a20f486c4a681b1ad6e115958c55d2ff69e9b69bc32c4e95ebe8af956