[INFO] crate humpty_dumpty 0.0.1 is already in cache
[INFO] extracting crate humpty_dumpty 0.0.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/humpty_dumpty/0.0.1
[INFO] extracting crate humpty_dumpty 0.0.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/humpty_dumpty/0.0.1
[INFO] validating manifest of humpty_dumpty-0.0.1 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 humpty_dumpty-0.0.1 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 humpty_dumpty-0.0.1
[INFO] finished frobbing humpty_dumpty-0.0.1
[INFO] frobbed toml for humpty_dumpty-0.0.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/humpty_dumpty/0.0.1/Cargo.toml
[INFO] started frobbing humpty_dumpty-0.0.1
[INFO] finished frobbing humpty_dumpty-0.0.1
[INFO] frobbed toml for humpty_dumpty-0.0.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/humpty_dumpty/0.0.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing humpty_dumpty-0.0.1 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-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/humpty_dumpty/0.0.1:/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] db177d2293a561c3d42ea55fa0cad9820a9bf39c805f7676af7c0f996a8e89b3
[INFO] running `"docker" "start" "-a" "db177d2293a561c3d42ea55fa0cad9820a9bf39c805f7676af7c0f996a8e89b3"`
[INFO] [stderr]    Compiling humpty_dumpty v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> src/lib.rs:1:30
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(plugin_registrar, quote, plugin, box_syntax, rustc_private,
[INFO] [stderr]   |                              ^^^^^ feature has been removed
[INFO] [stderr] 
[INFO] [stderr] error: /opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libsyntax-8cf8ad0a3ef39141.so: undefined symbol: __rustc_plugin_registrar_346200228b6a3182a68edea75d5b8ed6__
[INFO] [stderr]  --> src/lib.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![plugin(syntax)]
[INFO] [stderr]   |           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0557`.
[INFO] [stderr] error: Could not compile `humpty_dumpty`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "db177d2293a561c3d42ea55fa0cad9820a9bf39c805f7676af7c0f996a8e89b3"`
[INFO] running `"docker" "rm" "-f" "db177d2293a561c3d42ea55fa0cad9820a9bf39c805f7676af7c0f996a8e89b3"`
[INFO] [stdout] db177d2293a561c3d42ea55fa0cad9820a9bf39c805f7676af7c0f996a8e89b3