[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-1.37-6/sources/1.36.0/gh/thara/rust-tcp-echo-server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/gh/thara/rust-tcp-echo-server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of thara/rust-tcp-echo-server 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 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-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/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" "+1.36.0" "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 thara/rust-tcp-echo-server against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 39aab69cd55746f86e2302ff89a0429b38aaaff886c82ab926632e1b091cbfc9
[INFO] running `"docker" "start" "-a" "39aab69cd55746f86e2302ff89a0429b38aaaff886c82ab926632e1b091cbfc9"`
[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 6.46s
[INFO] running `"docker" "inspect" "39aab69cd55746f86e2302ff89a0429b38aaaff886c82ab926632e1b091cbfc9"`
[INFO] running `"docker" "rm" "-f" "39aab69cd55746f86e2302ff89a0429b38aaaff886c82ab926632e1b091cbfc9"`
[INFO] [stdout] 39aab69cd55746f86e2302ff89a0429b38aaaff886c82ab926632e1b091cbfc9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d63c31978a794178162f9c50671220bb9a3dd060e74c58b0b5ddc4ea1856d748
[INFO] running `"docker" "start" "-a" "d63c31978a794178162f9c50671220bb9a3dd060e74c58b0b5ddc4ea1856d748"`
[INFO] [stderr]    Compiling tcp-echo-server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `"docker" "inspect" "d63c31978a794178162f9c50671220bb9a3dd060e74c58b0b5ddc4ea1856d748"`
[INFO] running `"docker" "rm" "-f" "d63c31978a794178162f9c50671220bb9a3dd060e74c58b0b5ddc4ea1856d748"`
[INFO] [stdout] d63c31978a794178162f9c50671220bb9a3dd060e74c58b0b5ddc4ea1856d748
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] bdfe3b1492ef0dd6008f698f69af4710746c96dcca3b47735abeba15e853d50c
[INFO] running `"docker" "start" "-a" "bdfe3b1492ef0dd6008f698f69af4710746c96dcca3b47735abeba15e853d50c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tcp_echo_server-28e1981938510dad
[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" "bdfe3b1492ef0dd6008f698f69af4710746c96dcca3b47735abeba15e853d50c"`
[INFO] running `"docker" "rm" "-f" "bdfe3b1492ef0dd6008f698f69af4710746c96dcca3b47735abeba15e853d50c"`
[INFO] [stdout] bdfe3b1492ef0dd6008f698f69af4710746c96dcca3b47735abeba15e853d50c