[INFO] fetching crate merkle_sigs 1.6.0...
[INFO] extracting crate merkle_sigs 1.6.0 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/merkle_sigs/1.6.0
[INFO] extracting crate merkle_sigs 1.6.0 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/merkle_sigs/1.6.0
[INFO] validating manifest of merkle_sigs-1.6.0 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of merkle_sigs-1.6.0 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing merkle_sigs-1.6.0
[INFO] finished frobbing merkle_sigs-1.6.0
[INFO] frobbed toml for merkle_sigs-1.6.0 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/merkle_sigs/1.6.0/Cargo.toml
[INFO] started frobbing merkle_sigs-1.6.0
[INFO] finished frobbing merkle_sigs-1.6.0
[INFO] frobbed toml for merkle_sigs-1.6.0 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/merkle_sigs/1.6.0/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded merkle v1.10.0
[INFO] [stderr]   Downloaded lamport_sigs v0.6.0
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking merkle_sigs-1.6.0 against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-6/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/merkle_sigs/1.6.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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=forbid" "-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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b4ad34a297c09ba27956d787a5e018a5f9cf9579a539745e8671c8af25666707
[INFO] running `"docker" "start" "-a" "b4ad34a297c09ba27956d787a5e018a5f9cf9579a539745e8671c8af25666707"`
[INFO] [stderr]    Compiling protoc v2.7.0
[INFO] [stderr]     Checking lamport_sigs v0.6.0
[INFO] [stderr]    Compiling protoc-rust v2.7.0
[INFO] [stderr]    Compiling merkle v1.10.0
[INFO] [stderr] error: failed to run custom build command for `merkle v1.10.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/merkle-d4acbecc1bb1df9d/build-script-build` (exit code: 1)
[INFO] [stderr] --- stderr
[INFO] [stderr] Build failed because merkle.rs could not find: libprotoc 3.5.1
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "b4ad34a297c09ba27956d787a5e018a5f9cf9579a539745e8671c8af25666707"`
[INFO] running `"docker" "rm" "-f" "b4ad34a297c09ba27956d787a5e018a5f9cf9579a539745e8671c8af25666707"`
[INFO] [stdout] b4ad34a297c09ba27956d787a5e018a5f9cf9579a539745e8671c8af25666707