[INFO] updating cached repository andrewcsmith/osc_server_example
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/andrewcsmith/osc_server_example
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/andrewcsmith/osc_server_example" "work/ex/beta-1.37-6/sources/1.36.0/gh/andrewcsmith/osc_server_example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/andrewcsmith/osc_server_example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/andrewcsmith/osc_server_example" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/andrewcsmith/osc_server_example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/andrewcsmith/osc_server_example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3bb571f79dc6e19c83fbc81eb999eef0f978bf24
[INFO] sha for GitHub repo andrewcsmith/osc_server_example: 3bb571f79dc6e19c83fbc81eb999eef0f978bf24
[INFO] validating manifest of andrewcsmith/osc_server_example 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 andrewcsmith/osc_server_example 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 andrewcsmith/osc_server_example
[INFO] finished frobbing andrewcsmith/osc_server_example
[INFO] frobbed toml for andrewcsmith/osc_server_example written to work/ex/beta-1.37-6/sources/1.36.0/gh/andrewcsmith/osc_server_example/Cargo.toml
[INFO] started frobbing andrewcsmith/osc_server_example
[INFO] finished frobbing andrewcsmith/osc_server_example
[INFO] frobbed toml for andrewcsmith/osc_server_example written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/andrewcsmith/osc_server_example/Cargo.toml
[INFO] crate andrewcsmith/osc_server_example 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 andrewcsmith/osc_server_example against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/andrewcsmith/osc_server_example:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 2e4805b00c718fe9186df0fbf7b6cd61b9a3c70d6f50a341a781ef6c874bd50a
[INFO] running `"docker" "start" "-a" "2e4805b00c718fe9186df0fbf7b6cd61b9a3c70d6f50a341a781ef6c874bd50a"`
[INFO] [stderr]    Compiling osc_address_derive v0.2.2
[INFO] [stderr]    Compiling serde_osc v0.4.2
[INFO] [stderr]    Compiling osc_address v0.2.2
[INFO] [stderr] error[E0554]: #![feature] may not be used on the beta release channel
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/osc_address_derive-0.2.2/src/lib.rs:167:1
[INFO] [stderr]     |
[INFO] [stderr] 167 | #![feature(conservative_impl_trait)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the beta release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_osc-0.4.2/src/lib.rs:88:1
[INFO] [stderr]    |
[INFO] [stderr] 88 | #![feature(try_from)]
[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 `osc_address_derive`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0554]: #![feature] may not be used on the beta release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/osc_address-0.2.2/src/lib.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | #![feature(try_from)]
[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 `osc_address`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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 `serde_osc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2e4805b00c718fe9186df0fbf7b6cd61b9a3c70d6f50a341a781ef6c874bd50a"`
[INFO] running `"docker" "rm" "-f" "2e4805b00c718fe9186df0fbf7b6cd61b9a3c70d6f50a341a781ef6c874bd50a"`
[INFO] [stdout] 2e4805b00c718fe9186df0fbf7b6cd61b9a3c70d6f50a341a781ef6c874bd50a