[INFO] updating cached repository thara/rust-tcp-echo-server
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/thara/rust-tcp-echo-server
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/thara/rust-tcp-echo-server" "work/ex/beta-1.38-1/sources/1.37.0/gh/thara/rust-tcp-echo-server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/thara/rust-tcp-echo-server'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/thara/rust-tcp-echo-server" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/thara/rust-tcp-echo-server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/thara/rust-tcp-echo-server'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] daf10149772fc8bde32334ae2327ee6db20c7a86
[INFO] sha for GitHub repo thara/rust-tcp-echo-server: daf10149772fc8bde32334ae2327ee6db20c7a86
[INFO] validating manifest of thara/rust-tcp-echo-server on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of thara/rust-tcp-echo-server on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing thara/rust-tcp-echo-server
[INFO] finished frobbing thara/rust-tcp-echo-server
[INFO] frobbed toml for thara/rust-tcp-echo-server written to work/ex/beta-1.38-1/sources/1.37.0/gh/thara/rust-tcp-echo-server/Cargo.toml
[INFO] started frobbing thara/rust-tcp-echo-server
[INFO] finished frobbing thara/rust-tcp-echo-server
[INFO] frobbed toml for thara/rust-tcp-echo-server written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/thara/rust-tcp-echo-server/Cargo.toml
[INFO] crate thara/rust-tcp-echo-server already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing thara/rust-tcp-echo-server against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/thara/rust-tcp-echo-server:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] ad31cbb530a306efe6dbc8f069bf0485a42add14d9acb9ca4ac03c547fb60b9d
[INFO] running `"docker" "start" "-a" "ad31cbb530a306efe6dbc8f069bf0485a42add14d9acb9ca4ac03c547fb60b9d"`
[INFO] [stderr]    Compiling nix v0.9.0
[INFO] [stderr]    Compiling tcp-echo-server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.27s
[INFO] running `"docker" "inspect" "ad31cbb530a306efe6dbc8f069bf0485a42add14d9acb9ca4ac03c547fb60b9d"`
[INFO] running `"docker" "rm" "-f" "ad31cbb530a306efe6dbc8f069bf0485a42add14d9acb9ca4ac03c547fb60b9d"`
[INFO] [stdout] ad31cbb530a306efe6dbc8f069bf0485a42add14d9acb9ca4ac03c547fb60b9d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/thara/rust-tcp-echo-server:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 79264d2837ab60803ee68c236972f57b7b468f90abc5f487ad9a39419f9568bc
[INFO] running `"docker" "start" "-a" "79264d2837ab60803ee68c236972f57b7b468f90abc5f487ad9a39419f9568bc"`
[INFO] [stderr]    Compiling tcp-echo-server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "79264d2837ab60803ee68c236972f57b7b468f90abc5f487ad9a39419f9568bc"`
[INFO] running `"docker" "rm" "-f" "79264d2837ab60803ee68c236972f57b7b468f90abc5f487ad9a39419f9568bc"`
[INFO] [stdout] 79264d2837ab60803ee68c236972f57b7b468f90abc5f487ad9a39419f9568bc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/thara/rust-tcp-echo-server:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] fd70740158d619cfc0f6da78a173092d0d21c645c82d5cff7e4b151e886900ef
[INFO] running `"docker" "start" "-a" "fd70740158d619cfc0f6da78a173092d0d21c645c82d5cff7e4b151e886900ef"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tcp_echo_server-cd3445794f6c8ae1
[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" "fd70740158d619cfc0f6da78a173092d0d21c645c82d5cff7e4b151e886900ef"`
[INFO] running `"docker" "rm" "-f" "fd70740158d619cfc0f6da78a173092d0d21c645c82d5cff7e4b151e886900ef"`
[INFO] [stdout] fd70740158d619cfc0f6da78a173092d0d21c645c82d5cff7e4b151e886900ef