[INFO] cloning repository https://github.com/karankumarshreds/async-chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/karankumarshreds/async-chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkarankumarshreds%2Fasync-chat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkarankumarshreds%2Fasync-chat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca8ae72c3afd904d5e26ac8f3b7b4d4647da9fad
[INFO] testing karankumarshreds/async-chat against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkarankumarshreds%2Fasync-chat" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/karankumarshreds/async-chat
[INFO] finished tweaking git repo https://github.com/karankumarshreds/async-chat
[INFO] tweaked toml for git repo https://github.com/karankumarshreds/async-chat written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/karankumarshreds/async-chat on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/karankumarshreds/async-chat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b350f2053d8dbf3eba6db77cd2ddbd7f76572ea5a6318a0e9877937379c4ede
[INFO] running `Command { std: "docker" "start" "-a" "0b350f2053d8dbf3eba6db77cd2ddbd7f76572ea5a6318a0e9877937379c4ede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b350f2053d8dbf3eba6db77cd2ddbd7f76572ea5a6318a0e9877937379c4ede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b350f2053d8dbf3eba6db77cd2ddbd7f76572ea5a6318a0e9877937379c4ede", kill_on_drop: false }`
[INFO] [stdout] 0b350f2053d8dbf3eba6db77cd2ddbd7f76572ea5a6318a0e9877937379c4ede
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21f09bd298db486fd31e73cb8c3705c599cb30b065cede3fc6d7aa7bc6f18f42
[INFO] running `Command { std: "docker" "start" "-a" "21f09bd298db486fd31e73cb8c3705c599cb30b065cede3fc6d7aa7bc6f18f42", kill_on_drop: false }`
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling bitflags v2.9.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling event-listener v5.4.0
[INFO] [stderr]    Compiling futures-lite v2.6.0
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling value-bag v1.11.1
[INFO] [stderr]    Compiling async-lock v3.4.0
[INFO] [stderr]    Compiling async-channel v2.3.1
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling async-channel v1.9.0
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling tokio v1.45.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.5
[INFO] [stderr]    Compiling blocking v1.6.1
[INFO] [stderr]    Compiling async-executor v1.13.2
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling polling v3.7.4
[INFO] [stderr]    Compiling async-io v2.4.0
[INFO] [stderr]    Compiling async-signal v0.2.10
[INFO] [stderr]    Compiling async-global-executor v2.4.1
[INFO] [stderr]    Compiling async-process v2.3.0
[INFO] [stderr]    Compiling async-std v1.13.1
[INFO] [stderr]    Compiling chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sync::Arc`
[INFO] [stdout]  --> src/bin/client.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use async_std::{io, net, sync::Arc};
[INFO] [stdout]   |                          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.73s
[INFO] running `Command { std: "docker" "inspect" "21f09bd298db486fd31e73cb8c3705c599cb30b065cede3fc6d7aa7bc6f18f42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21f09bd298db486fd31e73cb8c3705c599cb30b065cede3fc6d7aa7bc6f18f42", kill_on_drop: false }`
[INFO] [stdout] 21f09bd298db486fd31e73cb8c3705c599cb30b065cede3fc6d7aa7bc6f18f42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e2a8a271c55906cab945dbb44d0ace3456e28ff70b170c475bc1bdd11dcf5ea
[INFO] running `Command { std: "docker" "start" "-a" "1e2a8a271c55906cab945dbb44d0ace3456e28ff70b170c475bc1bdd11dcf5ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sync::Arc`
[INFO] [stdout]  --> src/bin/client.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use async_std::{io, net, sync::Arc};
[INFO] [stdout]   |                          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `Command { std: "docker" "inspect" "1e2a8a271c55906cab945dbb44d0ace3456e28ff70b170c475bc1bdd11dcf5ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e2a8a271c55906cab945dbb44d0ace3456e28ff70b170c475bc1bdd11dcf5ea", kill_on_drop: false }`
[INFO] [stdout] 1e2a8a271c55906cab945dbb44d0ace3456e28ff70b170c475bc1bdd11dcf5ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 52a69cf39febfac0e89ad47044c0090444072758eee2f9d5e4feb76c13a3c899
[INFO] running `Command { std: "docker" "start" "-a" "52a69cf39febfac0e89ad47044c0090444072758eee2f9d5e4feb76c13a3c899", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `sync::Arc`
[INFO] [stderr]  --> src/bin/client.rs:2:26
[INFO] [stderr]   |
[INFO] [stderr] 2 | use async_std::{io, net, sync::Arc};
[INFO] [stderr]   |                          ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `chat` (bin "client" test) generated 1 warning (run `cargo fix --bin "client" -p chat --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/chat-9c4a1017b7e56c5f)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_fromclient_json ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/chat-3d9e20e9e4326c3a)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/client.rs (/opt/rustwide/target/debug/deps/client-361079f2cc4d7e8d)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/server/main.rs (/opt/rustwide/target/debug/deps/server-d9d337ca70407ceb)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests chat
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "52a69cf39febfac0e89ad47044c0090444072758eee2f9d5e4feb76c13a3c899", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52a69cf39febfac0e89ad47044c0090444072758eee2f9d5e4feb76c13a3c899", kill_on_drop: false }`
[INFO] [stdout] 52a69cf39febfac0e89ad47044c0090444072758eee2f9d5e4feb76c13a3c899
