[INFO] crate pnet_macros_plugin 0.1.0 is already in cache
[INFO] extracting crate pnet_macros_plugin 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/pnet_macros_plugin/0.1.0
[INFO] extracting crate pnet_macros_plugin 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pnet_macros_plugin/0.1.0
[INFO] validating manifest of pnet_macros_plugin-0.1.0 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 pnet_macros_plugin-0.1.0 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 pnet_macros_plugin-0.1.0
[INFO] removed path dependency pnet_macros from pnet_macros_plugin-0.1.0
[INFO] finished frobbing pnet_macros_plugin-0.1.0
[INFO] frobbed toml for pnet_macros_plugin-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/pnet_macros_plugin/0.1.0/Cargo.toml
[INFO] started frobbing pnet_macros_plugin-0.1.0
[INFO] removed path dependency pnet_macros from pnet_macros_plugin-0.1.0
[INFO] finished frobbing pnet_macros_plugin-0.1.0
[INFO] frobbed toml for pnet_macros_plugin-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pnet_macros_plugin/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 pnet_macros_plugin-0.1.0 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-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pnet_macros_plugin/0.1.0:/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] e49bb3a220b7934cca344b61fc3ef4bfe1ba146210c2a5cb627cf5db0aecc98e
[INFO] running `"docker" "start" "-a" "e49bb3a220b7934cca344b61fc3ef4bfe1ba146210c2a5cb627cf5db0aecc98e"`
[INFO] [stderr]    Compiling regex v1.0.6
[INFO] [stderr]    Compiling syntex_pos v0.42.0
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling pnet_macros v0.22.0
[INFO] [stderr]    Compiling pnet_macros_plugin 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:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | #![feature(plugin_registrar, rustc_private)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/lib.rs:15:27
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pnet_macros::register(registry);
[INFO] [stderr]    |                           ^^^^^^^^ expected struct `syntex::Registry`, found struct `rustc_plugin::Registry`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `&mut syntex::Registry`
[INFO] [stderr]               found type `&mut rustc_plugin::Registry<'_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `pnet_macros_plugin`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e49bb3a220b7934cca344b61fc3ef4bfe1ba146210c2a5cb627cf5db0aecc98e"`
[INFO] running `"docker" "rm" "-f" "e49bb3a220b7934cca344b61fc3ef4bfe1ba146210c2a5cb627cf5db0aecc98e"`
[INFO] [stdout] e49bb3a220b7934cca344b61fc3ef4bfe1ba146210c2a5cb627cf5db0aecc98e