[INFO] cloning repository https://github.com/gterzian/simple_chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gterzian/simple_chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgterzian%2Fsimple_chat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgterzian%2Fsimple_chat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9f85ae5a882d8a0bdc8554d708fc6880d841c359
[INFO] testing gterzian/simple_chat against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgterzian%2Fsimple_chat" "/workspace/builds/worker-58/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-58/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gterzian/simple_chat on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-58/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/gterzian/simple_chat
[INFO] finished tweaking git repo https://github.com/gterzian/simple_chat
[INFO] tweaked toml for git repo https://github.com/gterzian/simple_chat written to /workspace/builds/worker-58/source/Cargo.toml
[INFO] crate git repo https://github.com/gterzian/simple_chat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b682914de2a1fefbea49160596675029895a47d0a2636c8eabcfafc1851989c
[INFO] running `Command { std: "docker" "start" "-a" "8b682914de2a1fefbea49160596675029895a47d0a2636c8eabcfafc1851989c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b682914de2a1fefbea49160596675029895a47d0a2636c8eabcfafc1851989c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b682914de2a1fefbea49160596675029895a47d0a2636c8eabcfafc1851989c", kill_on_drop: false }`
[INFO] [stdout] 8b682914de2a1fefbea49160596675029895a47d0a2636c8eabcfafc1851989c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f593f0bd6da0d7d6af5129259bfac9aeed0a9a0fdaf796d7f11448c53f5d2f1
[INFO] running `Command { std: "docker" "start" "-a" "4f593f0bd6da0d7d6af5129259bfac9aeed0a9a0fdaf796d7f11448c53f5d2f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling tinyfiledialogs v3.3.5
[INFO] [stderr]    Compiling simple_chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/main.rs:143:64
[INFO] [stdout]     |
[INFO] [stdout] 143 |         _ => panic!("unknown argument - usage is 'cargo run -- {server|client}")
[INFO] [stdout]     |                                                                ^             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 143 |         _ => panic!("{}", "unknown argument - usage is 'cargo run -- {server|client}")
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.80s
[INFO] running `Command { std: "docker" "inspect" "4f593f0bd6da0d7d6af5129259bfac9aeed0a9a0fdaf796d7f11448c53f5d2f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f593f0bd6da0d7d6af5129259bfac9aeed0a9a0fdaf796d7f11448c53f5d2f1", kill_on_drop: false }`
[INFO] [stdout] 4f593f0bd6da0d7d6af5129259bfac9aeed0a9a0fdaf796d7f11448c53f5d2f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 914f3e021a6fc97ca131ef6ffda150997db70dc9dcdf46eea44ae7452f1d9c86
[INFO] running `Command { std: "docker" "start" "-a" "914f3e021a6fc97ca131ef6ffda150997db70dc9dcdf46eea44ae7452f1d9c86", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling simple_chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/main.rs:143:64
[INFO] [stdout]     |
[INFO] [stdout] 143 |         _ => panic!("unknown argument - usage is 'cargo run -- {server|client}")
[INFO] [stdout]     |                                                                ^             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 143 |         _ => panic!("{}", "unknown argument - usage is 'cargo run -- {server|client}")
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.53s
[INFO] running `Command { std: "docker" "inspect" "914f3e021a6fc97ca131ef6ffda150997db70dc9dcdf46eea44ae7452f1d9c86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "914f3e021a6fc97ca131ef6ffda150997db70dc9dcdf46eea44ae7452f1d9c86", kill_on_drop: false }`
[INFO] [stdout] 914f3e021a6fc97ca131ef6ffda150997db70dc9dcdf46eea44ae7452f1d9c86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a487f56a311dd9894c170187d2967424d97c1ef18b59b795cbcb09d99314412c
[INFO] running `Command { std: "docker" "start" "-a" "a487f56a311dd9894c170187d2967424d97c1ef18b59b795cbcb09d99314412c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: panic message contains braces
[INFO] [stderr]    --> src/main.rs:143:64
[INFO] [stderr]     |
[INFO] [stderr] 143 |         _ => panic!("unknown argument - usage is 'cargo run -- {server|client}")
[INFO] [stderr]     |                                                                ^             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 143 |         _ => panic!("{}", "unknown argument - usage is 'cargo run -- {server|client}")
[INFO] [stderr]     |                     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `simple_chat` (bin "simple_chat" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.80s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/simple_chat-03901df1c8ca456c)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_server_and_client_messaging ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a487f56a311dd9894c170187d2967424d97c1ef18b59b795cbcb09d99314412c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a487f56a311dd9894c170187d2967424d97c1ef18b59b795cbcb09d99314412c", kill_on_drop: false }`
[INFO] [stdout] a487f56a311dd9894c170187d2967424d97c1ef18b59b795cbcb09d99314412c