[INFO] fetching crate butterfly 0.1.0...
[INFO] extracting crate butterfly 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/butterfly/0.1.0
[INFO] extracting crate butterfly 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/butterfly/0.1.0
[INFO] validating manifest of butterfly-0.1.0 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 butterfly-0.1.0 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 butterfly-0.1.0
[INFO] finished frobbing butterfly-0.1.0
[INFO] frobbed toml for butterfly-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/butterfly/0.1.0/Cargo.toml
[INFO] started frobbing butterfly-0.1.0
[INFO] finished frobbing butterfly-0.1.0
[INFO] frobbed toml for butterfly-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/butterfly/0.1.0/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] 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing butterfly-0.1.0 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-5/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/butterfly/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 2d39ff6c0c3c0cfbe531e3f36e27ee2f67b55cddaad9a109320a7421bba75eb0
[INFO] running `"docker" "start" "-a" "2d39ff6c0c3c0cfbe531e3f36e27ee2f67b55cddaad9a109320a7421bba75eb0"`
[INFO] [stderr]    Compiling butterfly v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "2d39ff6c0c3c0cfbe531e3f36e27ee2f67b55cddaad9a109320a7421bba75eb0"`
[INFO] running `"docker" "rm" "-f" "2d39ff6c0c3c0cfbe531e3f36e27ee2f67b55cddaad9a109320a7421bba75eb0"`
[INFO] [stdout] 2d39ff6c0c3c0cfbe531e3f36e27ee2f67b55cddaad9a109320a7421bba75eb0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/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/butterfly/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] d0ca3b34d4582341d5d1d57f2358204587377a677cf6009a927d617542fb3e09
[INFO] running `"docker" "start" "-a" "d0ca3b34d4582341d5d1d57f2358204587377a677cf6009a927d617542fb3e09"`
[INFO] [stderr]    Compiling butterfly v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `"docker" "inspect" "d0ca3b34d4582341d5d1d57f2358204587377a677cf6009a927d617542fb3e09"`
[INFO] running `"docker" "rm" "-f" "d0ca3b34d4582341d5d1d57f2358204587377a677cf6009a927d617542fb3e09"`
[INFO] [stdout] d0ca3b34d4582341d5d1d57f2358204587377a677cf6009a927d617542fb3e09
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/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/butterfly/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 495ac48f6549ce710cb486325c3841f69eddb2b1d4ab1e73a56c0127e773f725
[INFO] running `"docker" "start" "-a" "495ac48f6549ce710cb486325c3841f69eddb2b1d4ab1e73a56c0127e773f725"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/butterfly-d458c99071c6a0bd
[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" "495ac48f6549ce710cb486325c3841f69eddb2b1d4ab1e73a56c0127e773f725"`
[INFO] running `"docker" "rm" "-f" "495ac48f6549ce710cb486325c3841f69eddb2b1d4ab1e73a56c0127e773f725"`
[INFO] [stdout] 495ac48f6549ce710cb486325c3841f69eddb2b1d4ab1e73a56c0127e773f725