[INFO] crate tapioca-codegen 0.0.1 is already in cache
[INFO] extracting crate tapioca-codegen 0.0.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/tapioca-codegen/0.0.1
[INFO] extracting crate tapioca-codegen 0.0.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tapioca-codegen/0.0.1
[INFO] validating manifest of tapioca-codegen-0.0.1 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 tapioca-codegen-0.0.1 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 tapioca-codegen-0.0.1
[INFO] finished frobbing tapioca-codegen-0.0.1
[INFO] frobbed toml for tapioca-codegen-0.0.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/tapioca-codegen/0.0.1/Cargo.toml
[INFO] started frobbing tapioca-codegen-0.0.1
[INFO] finished frobbing tapioca-codegen-0.0.1
[INFO] frobbed toml for tapioca-codegen-0.0.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tapioca-codegen/0.0.1/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 tapioca-codegen-0.0.1 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/tapioca-codegen/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] a4752c8baf3e6648e23075c0759b68311cd27cab993bf05f63a4c96f1964dcde
[INFO] running `"docker" "start" "-a" "a4752c8baf3e6648e23075c0759b68311cd27cab993bf05f63a4c96f1964dcde"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling Inflector v0.10.1
[INFO] [stderr]    Compiling reqwest v0.6.2
[INFO] [stderr]    Compiling tapioca-codegen v0.0.1 (/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(proc_macro)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parse.rs:10:40
[INFO] [stderr]    |
[INFO] [stderr] 10 | type SchemaResult = Result<Schema, Box<Error + Send + Sync>>;
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send + Sync`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/infer/datatype.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Box<Error + Send + Sync>
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/infer/mod.rs:17:37
[INFO] [stderr]    |
[INFO] [stderr] 17 | type InferResult<T> = Result<T, Box<Error + Send + Sync>>;
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send + Sync`
[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 `tapioca-codegen`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a4752c8baf3e6648e23075c0759b68311cd27cab993bf05f63a4c96f1964dcde"`
[INFO] running `"docker" "rm" "-f" "a4752c8baf3e6648e23075c0759b68311cd27cab993bf05f63a4c96f1964dcde"`
[INFO] [stdout] a4752c8baf3e6648e23075c0759b68311cd27cab993bf05f63a4c96f1964dcde