[INFO] updating cached repository https://github.com/minaduking/network_sample
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b16df507af73b5912c58dea95c22459008708524
[INFO] testing minaduking/network_sample against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fminaduking%2Fnetwork_sample" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/minaduking/network_sample on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/minaduking/network_sample
[INFO] finished tweaking git repo https://github.com/minaduking/network_sample
[INFO] tweaked toml for git repo https://github.com/minaduking/network_sample written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/minaduking/network_sample already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 6f57609b45acc55793e0af3c32d01ac4c175c4d7040bd0b0c021bcc7e7d00dc4
[INFO] running `"docker" "start" "-a" "6f57609b45acc55793e0af3c32d01ac4c175c4d7040bd0b0c021bcc7e7d00dc4"`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling regex v1.1.9
[INFO] [stderr]    Compiling regex-syntax v0.6.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.30
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling backtrace v0.3.32
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling network_sample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/tcp_server.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |         stream.write_all(&buffer[..nbytes]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.63s
[INFO] running `"docker" "inspect" "6f57609b45acc55793e0af3c32d01ac4c175c4d7040bd0b0c021bcc7e7d00dc4"`
[INFO] running `"docker" "rm" "-f" "6f57609b45acc55793e0af3c32d01ac4c175c4d7040bd0b0c021bcc7e7d00dc4"`
[INFO] [stdout] 6f57609b45acc55793e0af3c32d01ac4c175c4d7040bd0b0c021bcc7e7d00dc4
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b53e4fabb5b04a2582e46e4b23cf711b9cc6b830c3d79081a099e85556f0be94
[INFO] running `"docker" "start" "-a" "b53e4fabb5b04a2582e46e4b23cf711b9cc6b830c3d79081a099e85556f0be94"`
[INFO] [stderr]    Compiling network_sample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/tcp_server.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |         stream.write_all(&buffer[..nbytes]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "b53e4fabb5b04a2582e46e4b23cf711b9cc6b830c3d79081a099e85556f0be94"`
[INFO] running `"docker" "rm" "-f" "b53e4fabb5b04a2582e46e4b23cf711b9cc6b830c3d79081a099e85556f0be94"`
[INFO] [stdout] b53e4fabb5b04a2582e46e4b23cf711b9cc6b830c3d79081a099e85556f0be94
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 9db18c1a3d31f4ab77c5cdb64e79dffab5647a013d08226c7d0c4c946481ba5f
[INFO] running `"docker" "start" "-a" "9db18c1a3d31f4ab77c5cdb64e79dffab5647a013d08226c7d0c4c946481ba5f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/network_sample-dfbab8626c22fbfb
[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" "9db18c1a3d31f4ab77c5cdb64e79dffab5647a013d08226c7d0c4c946481ba5f"`
[INFO] running `"docker" "rm" "-f" "9db18c1a3d31f4ab77c5cdb64e79dffab5647a013d08226c7d0c4c946481ba5f"`
[INFO] [stdout] 9db18c1a3d31f4ab77c5cdb64e79dffab5647a013d08226c7d0c4c946481ba5f