[INFO] fetching crate twiggy-opt 0.6.0...
[INFO] extracting crate twiggy-opt 0.6.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/twiggy-opt/0.6.0
[INFO] extracting crate twiggy-opt 0.6.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/twiggy-opt/0.6.0
[INFO] validating manifest of twiggy-opt-0.6.0 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 twiggy-opt-0.6.0 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 twiggy-opt-0.6.0
[INFO] finished frobbing twiggy-opt-0.6.0
[INFO] frobbed toml for twiggy-opt-0.6.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/twiggy-opt/0.6.0/Cargo.toml
[INFO] started frobbing twiggy-opt-0.6.0
[INFO] finished frobbing twiggy-opt-0.6.0
[INFO] frobbed toml for twiggy-opt-0.6.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/twiggy-opt/0.6.0/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] [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" "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]  Downloading crates ...
[INFO] [stderr]   Downloaded twiggy-traits v0.6.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing twiggy-opt-0.6.0 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-1/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/twiggy-opt/0.6.0:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] fb2307aaa1fde797a04b37ecd91758d3488b5357a7c61caef10470f45baeeaf4
[INFO] running `"docker" "start" "-a" "fb2307aaa1fde797a04b37ecd91758d3488b5357a7c61caef10470f45baeeaf4"`
[INFO] [stderr]    Compiling frozen v1.0.0
[INFO] [stderr]    Compiling wasmparser v0.31.1
[INFO] [stderr]    Compiling cpp_demangle v0.2.13
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling aho-corasick v0.7.4
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling bstr v0.2.6
[INFO] [stderr]    Compiling regex v1.2.0
[INFO] [stderr]    Compiling csv v1.1.1
[INFO] [stderr]    Compiling twiggy-ir v0.6.0
[INFO] [stderr]    Compiling twiggy-opt v0.6.0 (/opt/crater/workdir)
[INFO] [stderr]    Compiling twiggy-traits v0.6.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.10s
[INFO] running `"docker" "inspect" "fb2307aaa1fde797a04b37ecd91758d3488b5357a7c61caef10470f45baeeaf4"`
[INFO] running `"docker" "rm" "-f" "fb2307aaa1fde797a04b37ecd91758d3488b5357a7c61caef10470f45baeeaf4"`
[INFO] [stdout] fb2307aaa1fde797a04b37ecd91758d3488b5357a7c61caef10470f45baeeaf4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/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/twiggy-opt/0.6.0:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1d382dbf5c518825eed25a99c1b31b2ef141793e5af3dfd4b9d927bec5f64822
[INFO] running `"docker" "start" "-a" "1d382dbf5c518825eed25a99c1b31b2ef141793e5af3dfd4b9d927bec5f64822"`
[INFO] [stderr]    Compiling twiggy-opt v0.6.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.00s
[INFO] running `"docker" "inspect" "1d382dbf5c518825eed25a99c1b31b2ef141793e5af3dfd4b9d927bec5f64822"`
[INFO] running `"docker" "rm" "-f" "1d382dbf5c518825eed25a99c1b31b2ef141793e5af3dfd4b9d927bec5f64822"`
[INFO] [stdout] 1d382dbf5c518825eed25a99c1b31b2ef141793e5af3dfd4b9d927bec5f64822
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/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/twiggy-opt/0.6.0:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] b27d7eaabbed22cd6a2b09dcdc82d7dfdc5eef9924236050a991f9c6f4c78c66
[INFO] running `"docker" "start" "-a" "b27d7eaabbed22cd6a2b09dcdc82d7dfdc5eef9924236050a991f9c6f4c78c66"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/twiggy_opt-ae7517cec6857297
[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] [stderr]    Doc-tests twiggy-opt
[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" "b27d7eaabbed22cd6a2b09dcdc82d7dfdc5eef9924236050a991f9c6f4c78c66"`
[INFO] running `"docker" "rm" "-f" "b27d7eaabbed22cd6a2b09dcdc82d7dfdc5eef9924236050a991f9c6f4c78c66"`
[INFO] [stdout] b27d7eaabbed22cd6a2b09dcdc82d7dfdc5eef9924236050a991f9c6f4c78c66