[INFO] crate dubp-documents 0.12.0 is already in cache
[INFO] extracting crate dubp-documents 0.12.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/dubp-documents/0.12.0
[INFO] extracting crate dubp-documents 0.12.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/dubp-documents/0.12.0
[INFO] validating manifest of dubp-documents-0.12.0 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 dubp-documents-0.12.0 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 dubp-documents-0.12.0
[INFO] finished frobbing dubp-documents-0.12.0
[INFO] frobbed toml for dubp-documents-0.12.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/dubp-documents/0.12.0/Cargo.toml
[INFO] started frobbing dubp-documents-0.12.0
[INFO] finished frobbing dubp-documents-0.12.0
[INFO] frobbed toml for dubp-documents-0.12.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/dubp-documents/0.12.0/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 dubp-documents-0.12.0 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/dubp-documents/0.12.0:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] a774bbb2fc1b01a67b494e536387af21de2750a133f489e61b4ed199c1a1baf4
[INFO] running `"docker" "start" "-a" "a774bbb2fc1b01a67b494e536387af21de2750a133f489e61b4ed199c1a1baf4"`
[INFO] [stderr]    Compiling hex v0.2.0
[INFO] [stderr]    Compiling base58 v0.1.0
[INFO] [stderr]    Compiling rust-crypto-wasm v0.3.1
[INFO] [stderr]    Compiling base64 v0.5.2
[INFO] [stderr]    Compiling bincode v1.0.1
[INFO] [stderr]    Compiling durs-common-tools v0.1.0
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling json-pest-parser v0.1.0
[INFO] [stderr]    Compiling dup-crypto v0.6.0
[INFO] [stderr]    Compiling dubp-documents v0.12.0 (/opt/crater/workdir)
[INFO] [stderr] error: proc-macro derive panicked
[INFO] [stderr]   --> src/lib.rs:59:10
[INFO] [stderr]    |
[INFO] [stderr] 59 | #[derive(Parser)]
[INFO] [stderr]    |          ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: message: grammar error
[INFO] [stderr]            
[INFO] [stderr]             --> 3:17
[INFO] [stderr]              |
[INFO] [stderr]            3 | WHITESPACE = _{ "" } // Prohibition of white spaces␊
[INFO] [stderr]              |                 ^^
[INFO] [stderr]              |
[INFO] [stderr]              = WHITESPACE cannot fail and will repeat infinitely
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `dubp-documents`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a774bbb2fc1b01a67b494e536387af21de2750a133f489e61b4ed199c1a1baf4"`
[INFO] running `"docker" "rm" "-f" "a774bbb2fc1b01a67b494e536387af21de2750a133f489e61b4ed199c1a1baf4"`
[INFO] [stdout] a774bbb2fc1b01a67b494e536387af21de2750a133f489e61b4ed199c1a1baf4