[INFO] updating cached repository lann/wasm-idl
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lann/wasm-idl
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lann/wasm-idl" "work/ex/beta-1.37-6/sources/1.36.0/gh/lann/wasm-idl"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/lann/wasm-idl'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lann/wasm-idl" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lann/wasm-idl"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lann/wasm-idl'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fb474475ca89130af5f96e247407eb6a21c64947
[INFO] sha for GitHub repo lann/wasm-idl: fb474475ca89130af5f96e247407eb6a21c64947
[INFO] validating manifest of lann/wasm-idl 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 lann/wasm-idl 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 lann/wasm-idl
[INFO] finished frobbing lann/wasm-idl
[INFO] frobbed toml for lann/wasm-idl written to work/ex/beta-1.37-6/sources/1.36.0/gh/lann/wasm-idl/Cargo.toml
[INFO] started frobbing lann/wasm-idl
[INFO] finished frobbing lann/wasm-idl
[INFO] frobbed toml for lann/wasm-idl written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lann/wasm-idl/Cargo.toml
[INFO] crate lann/wasm-idl 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 lann/wasm-idl 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-0/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/lann/wasm-idl:/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] a2adbd72b890395a51c397fadf470c393d8682cb85a79cb07c6ff67022d63fc8
[INFO] running `"docker" "start" "-a" "a2adbd72b890395a51c397fadf470c393d8682cb85a79cb07c6ff67022d63fc8"`
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling wasm-idl v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `builtin_types`
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let builtin_types = builtins::parse_types();
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_builtin_types`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.08s
[INFO] running `"docker" "inspect" "a2adbd72b890395a51c397fadf470c393d8682cb85a79cb07c6ff67022d63fc8"`
[INFO] running `"docker" "rm" "-f" "a2adbd72b890395a51c397fadf470c393d8682cb85a79cb07c6ff67022d63fc8"`
[INFO] [stdout] a2adbd72b890395a51c397fadf470c393d8682cb85a79cb07c6ff67022d63fc8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/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/lann/wasm-idl:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 05d437d7f40fc758df787fa00777c9798dcb1e1b7a8bd4744e24dc8abe7f6862
[INFO] running `"docker" "start" "-a" "05d437d7f40fc758df787fa00777c9798dcb1e1b7a8bd4744e24dc8abe7f6862"`
[INFO] [stderr]    Compiling wasm-idl v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `builtin_types`
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let builtin_types = builtins::parse_types();
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_builtin_types`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `"docker" "inspect" "05d437d7f40fc758df787fa00777c9798dcb1e1b7a8bd4744e24dc8abe7f6862"`
[INFO] running `"docker" "rm" "-f" "05d437d7f40fc758df787fa00777c9798dcb1e1b7a8bd4744e24dc8abe7f6862"`
[INFO] [stdout] 05d437d7f40fc758df787fa00777c9798dcb1e1b7a8bd4744e24dc8abe7f6862
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/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/lann/wasm-idl:/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" "test" "--frozen"`
[INFO] [stdout] 3163ece76d6a8b57735cb3b36ebc2986619418c4a6b2e42b0f11d8fdb79e3f07
[INFO] running `"docker" "start" "-a" "3163ece76d6a8b57735cb3b36ebc2986619418c4a6b2e42b0f11d8fdb79e3f07"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/wasm_idl-152fc5e76799e4de
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "3163ece76d6a8b57735cb3b36ebc2986619418c4a6b2e42b0f11d8fdb79e3f07"`
[INFO] running `"docker" "rm" "-f" "3163ece76d6a8b57735cb3b36ebc2986619418c4a6b2e42b0f11d8fdb79e3f07"`
[INFO] [stdout] 3163ece76d6a8b57735cb3b36ebc2986619418c4a6b2e42b0f11d8fdb79e3f07