[INFO] fetching crate protoc 2.8.0...
[INFO] extracting crate protoc 2.8.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/protoc/2.8.0
[INFO] extracting crate protoc 2.8.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/protoc/2.8.0
[INFO] validating manifest of protoc-2.8.0 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 protoc-2.8.0 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 protoc-2.8.0
[INFO] finished frobbing protoc-2.8.0
[INFO] frobbed toml for protoc-2.8.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/protoc/2.8.0/Cargo.toml
[INFO] started frobbing protoc-2.8.0
[INFO] finished frobbing protoc-2.8.0
[INFO] frobbed toml for protoc-2.8.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/protoc/2.8.0/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 protoc-2.8.0 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-3/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/protoc/2.8.0:/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] f50083632be3eadaf39c57a2c34cc0d2615ed1fe8d955631315440e48f65fed6
[INFO] running `"docker" "start" "-a" "f50083632be3eadaf39c57a2c34cc0d2615ed1fe8d955631315440e48f65fed6"`
[INFO] [stderr]    Compiling protoc v2.8.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `"docker" "inspect" "f50083632be3eadaf39c57a2c34cc0d2615ed1fe8d955631315440e48f65fed6"`
[INFO] running `"docker" "rm" "-f" "f50083632be3eadaf39c57a2c34cc0d2615ed1fe8d955631315440e48f65fed6"`
[INFO] [stdout] f50083632be3eadaf39c57a2c34cc0d2615ed1fe8d955631315440e48f65fed6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/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/protoc/2.8.0:/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] 861625190dac517cd50fdbcd70d4d33b184196102008ba38db3279691e8fe474
[INFO] running `"docker" "start" "-a" "861625190dac517cd50fdbcd70d4d33b184196102008ba38db3279691e8fe474"`
[INFO] [stderr]    Compiling protoc v2.8.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `"docker" "inspect" "861625190dac517cd50fdbcd70d4d33b184196102008ba38db3279691e8fe474"`
[INFO] running `"docker" "rm" "-f" "861625190dac517cd50fdbcd70d4d33b184196102008ba38db3279691e8fe474"`
[INFO] [stdout] 861625190dac517cd50fdbcd70d4d33b184196102008ba38db3279691e8fe474
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/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/protoc/2.8.0:/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] 3df781466940fc6897cc46c99d916d4a47c2a815c43a82cfef75dd97d3d97061
[INFO] running `"docker" "start" "-a" "3df781466940fc6897cc46c99d916d4a47c2a815c43a82cfef75dd97d3d97061"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/protoc-22feaae7b2d4c089
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::version ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "3df781466940fc6897cc46c99d916d4a47c2a815c43a82cfef75dd97d3d97061"`
[INFO] running `"docker" "rm" "-f" "3df781466940fc6897cc46c99d916d4a47c2a815c43a82cfef75dd97d3d97061"`
[INFO] [stdout] 3df781466940fc6897cc46c99d916d4a47c2a815c43a82cfef75dd97d3d97061