[INFO] crate grpcio-compiler 0.5.0-alpha is already in cache
[INFO] extracting crate grpcio-compiler 0.5.0-alpha into work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/reg/grpcio-compiler/0.5.0-alpha
[INFO] extracting crate grpcio-compiler 0.5.0-alpha into work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/reg/grpcio-compiler/0.5.0-alpha
[INFO] validating manifest of grpcio-compiler-0.5.0-alpha on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of grpcio-compiler-0.5.0-alpha on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing grpcio-compiler-0.5.0-alpha
[INFO] finished frobbing grpcio-compiler-0.5.0-alpha
[INFO] frobbed toml for grpcio-compiler-0.5.0-alpha written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/reg/grpcio-compiler/0.5.0-alpha/Cargo.toml
[INFO] started frobbing grpcio-compiler-0.5.0-alpha
[INFO] finished frobbing grpcio-compiler-0.5.0-alpha
[INFO] frobbed toml for grpcio-compiler-0.5.0-alpha written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/reg/grpcio-compiler/0.5.0-alpha/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking grpcio-compiler-0.5.0-alpha against try#58b21121d0b447ceb3f1a655155d802191acf044 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-1/try#58b21121d0b447ceb3f1a655155d802191acf044:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/reg/grpcio-compiler/0.5.0-alpha:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 720fad558021458494798f35cf5fc47dde44e8c668159ccaf0fd6c9020f03d64
[INFO] running `"docker" "start" "-a" "720fad558021458494798f35cf5fc47dde44e8c668159ccaf0fd6c9020f03d64"`
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling prost-build v0.5.0
[INFO] [stderr]    Compiling prost-derive v0.5.0
[INFO] [stderr]    Compiling derive-new v0.5.6
[INFO] [stderr]     Checking prost v0.5.0
[INFO] [stderr]     Checking prost-types v0.5.0
[INFO] [stderr]     Checking grpcio-compiler v0.5.0-alpha (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.76s
[INFO] running `"docker" "inspect" "720fad558021458494798f35cf5fc47dde44e8c668159ccaf0fd6c9020f03d64"`
[INFO] running `"docker" "rm" "-f" "720fad558021458494798f35cf5fc47dde44e8c668159ccaf0fd6c9020f03d64"`
[INFO] [stdout] 720fad558021458494798f35cf5fc47dde44e8c668159ccaf0fd6c9020f03d64