[INFO] updating cached repository jrroman/chatter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jrroman/chatter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jrroman/chatter" "work/ex/beta-1.37-6/sources/1.36.0/gh/jrroman/chatter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/jrroman/chatter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jrroman/chatter" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jrroman/chatter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jrroman/chatter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 675e24f6a1e99877600bedc7cd55d9b03f69bf2c
[INFO] sha for GitHub repo jrroman/chatter: 675e24f6a1e99877600bedc7cd55d9b03f69bf2c
[INFO] validating manifest of jrroman/chatter 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 jrroman/chatter 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 jrroman/chatter
[INFO] finished frobbing jrroman/chatter
[INFO] frobbed toml for jrroman/chatter written to work/ex/beta-1.37-6/sources/1.36.0/gh/jrroman/chatter/Cargo.toml
[INFO] started frobbing jrroman/chatter
[INFO] finished frobbing jrroman/chatter
[INFO] frobbed toml for jrroman/chatter written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jrroman/chatter/Cargo.toml
[INFO] crate jrroman/chatter 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 jrroman/chatter 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-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jrroman/chatter:/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] b72c36ffa2948adbed361aee7e0400f7260ade9b30e5d856aedff39b626b0895
[INFO] running `"docker" "start" "-a" "b72c36ffa2948adbed361aee7e0400f7260ade9b30e5d856aedff39b626b0895"`
[INFO] [stderr]    Compiling chatter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:26:21
[INFO] [stderr]    |
[INFO] [stderr] 26 |                     handle_client(stream);
[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 0.69s
[INFO] running `"docker" "inspect" "b72c36ffa2948adbed361aee7e0400f7260ade9b30e5d856aedff39b626b0895"`
[INFO] running `"docker" "rm" "-f" "b72c36ffa2948adbed361aee7e0400f7260ade9b30e5d856aedff39b626b0895"`
[INFO] [stdout] b72c36ffa2948adbed361aee7e0400f7260ade9b30e5d856aedff39b626b0895
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jrroman/chatter:/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] ea777bd1b9e8fc88b134522ac7152fb212377318ba0fc12af783c8da7c41af28
[INFO] running `"docker" "start" "-a" "ea777bd1b9e8fc88b134522ac7152fb212377318ba0fc12af783c8da7c41af28"`
[INFO] [stderr]    Compiling chatter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:26:21
[INFO] [stderr]    |
[INFO] [stderr] 26 |                     handle_client(stream);
[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 0.46s
[INFO] running `"docker" "inspect" "ea777bd1b9e8fc88b134522ac7152fb212377318ba0fc12af783c8da7c41af28"`
[INFO] running `"docker" "rm" "-f" "ea777bd1b9e8fc88b134522ac7152fb212377318ba0fc12af783c8da7c41af28"`
[INFO] [stdout] ea777bd1b9e8fc88b134522ac7152fb212377318ba0fc12af783c8da7c41af28
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jrroman/chatter:/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] 3899ac3e503c6bf6468f9b270fed0c48e32643271790753b11b39c202a90df9e
[INFO] running `"docker" "start" "-a" "3899ac3e503c6bf6468f9b270fed0c48e32643271790753b11b39c202a90df9e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/chatter-23a8e6758cb111fa
[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" "3899ac3e503c6bf6468f9b270fed0c48e32643271790753b11b39c202a90df9e"`
[INFO] running `"docker" "rm" "-f" "3899ac3e503c6bf6468f9b270fed0c48e32643271790753b11b39c202a90df9e"`
[INFO] [stdout] 3899ac3e503c6bf6468f9b270fed0c48e32643271790753b11b39c202a90df9e