[INFO] updating cached repository kevinwilde/chat_server
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kevinwilde/chat_server
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kevinwilde/chat_server" "work/ex/beta-1.37-6/sources/1.36.0/gh/kevinwilde/chat_server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/kevinwilde/chat_server'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kevinwilde/chat_server" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kevinwilde/chat_server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kevinwilde/chat_server'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f8e45c687d8d0e7fbed9842f1c590b3b55703cff
[INFO] sha for GitHub repo kevinwilde/chat_server: f8e45c687d8d0e7fbed9842f1c590b3b55703cff
[INFO] validating manifest of kevinwilde/chat_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 kevinwilde/chat_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 kevinwilde/chat_server
[INFO] finished frobbing kevinwilde/chat_server
[INFO] frobbed toml for kevinwilde/chat_server written to work/ex/beta-1.37-6/sources/1.36.0/gh/kevinwilde/chat_server/Cargo.toml
[INFO] started frobbing kevinwilde/chat_server
[INFO] finished frobbing kevinwilde/chat_server
[INFO] frobbed toml for kevinwilde/chat_server written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kevinwilde/chat_server/Cargo.toml
[INFO] crate kevinwilde/chat_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 kevinwilde/chat_server against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kevinwilde/chat_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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 51f175f5ca27066153891d09a29cded0bfb7ab702f0af111956efe77310ec806
[INFO] running `"docker" "start" "-a" "51f175f5ca27066153891d09a29cded0bfb7ab702f0af111956efe77310ec806"`
[INFO] [stderr]    Compiling chat_server v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]   --> src/roommap.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn size(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.56s
[INFO] running `"docker" "inspect" "51f175f5ca27066153891d09a29cded0bfb7ab702f0af111956efe77310ec806"`
[INFO] running `"docker" "rm" "-f" "51f175f5ca27066153891d09a29cded0bfb7ab702f0af111956efe77310ec806"`
[INFO] [stdout] 51f175f5ca27066153891d09a29cded0bfb7ab702f0af111956efe77310ec806
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kevinwilde/chat_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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 576317ab2c8e72622944194ee1529b1e87e52b2d2bd6a677af39d74c688b3141
[INFO] running `"docker" "start" "-a" "576317ab2c8e72622944194ee1529b1e87e52b2d2bd6a677af39d74c688b3141"`
[INFO] [stderr]    Compiling chat_server v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]   --> src/roommap.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn size(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `"docker" "inspect" "576317ab2c8e72622944194ee1529b1e87e52b2d2bd6a677af39d74c688b3141"`
[INFO] running `"docker" "rm" "-f" "576317ab2c8e72622944194ee1529b1e87e52b2d2bd6a677af39d74c688b3141"`
[INFO] [stdout] 576317ab2c8e72622944194ee1529b1e87e52b2d2bd6a677af39d74c688b3141
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kevinwilde/chat_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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 5b634cf1f991f09b2c35d3fcf6b832e9cb9394d2d82d7eddf016abfa32326892
[INFO] running `"docker" "start" "-a" "5b634cf1f991f09b2c35d3fcf6b832e9cb9394d2d82d7eddf016abfa32326892"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/chat_server-4e27fbec3a568775
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test command::command_tests::parse_command_test_help ... ok
[INFO] [stdout] test command::command_tests::parse_command_test_list ... ok
[INFO] [stdout] test command::command_tests::parse_command_test_logoff ... ok
[INFO] [stdout] test command::command_tests::parse_command_test_q ... ok
[INFO] [stdout] test command::command_tests::parse_command_test_unrecognized ... ok
[INFO] [stdout] test command::command_tests::parse_command_test_quit ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "5b634cf1f991f09b2c35d3fcf6b832e9cb9394d2d82d7eddf016abfa32326892"`
[INFO] running `"docker" "rm" "-f" "5b634cf1f991f09b2c35d3fcf6b832e9cb9394d2d82d7eddf016abfa32326892"`
[INFO] [stdout] 5b634cf1f991f09b2c35d3fcf6b832e9cb9394d2d82d7eddf016abfa32326892