[INFO] cloning repository https://github.com/hoodie/rust-workshop-chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hoodie/rust-workshop-chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoodie%2Frust-workshop-chat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoodie%2Frust-workshop-chat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b7f9af6d1f8d963765a0a00784d2259b9171bf68
[INFO] testing hoodie/rust-workshop-chat against beta-2026-03-05 for beta-1.95-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoodie%2Frust-workshop-chat" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hoodie/rust-workshop-chat
[INFO] finished tweaking git repo https://github.com/hoodie/rust-workshop-chat
[INFO] tweaked toml for git repo https://github.com/hoodie/rust-workshop-chat written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hoodie/rust-workshop-chat on toolchain beta-2026-03-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hoodie/rust-workshop-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-2026-03-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded color-backtrace v0.3.0
[INFO] [stderr]   Downloaded object v0.28.4
[INFO] [stderr]   Downloaded backtrace v0.3.65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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-2026-03-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28cd3b0d8d47a70df99e8e175a4c3d53ae4182e14efdf32bcdcf7428c1f68061
[INFO] running `Command { std: "docker" "start" "-a" "28cd3b0d8d47a70df99e8e175a4c3d53ae4182e14efdf32bcdcf7428c1f68061", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28cd3b0d8d47a70df99e8e175a4c3d53ae4182e14efdf32bcdcf7428c1f68061", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28cd3b0d8d47a70df99e8e175a4c3d53ae4182e14efdf32bcdcf7428c1f68061", kill_on_drop: false }`
[INFO] [stdout] 28cd3b0d8d47a70df99e8e175a4c3d53ae4182e14efdf32bcdcf7428c1f68061
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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-2026-03-05" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c172de22e7ba012803f26a89604571976da5b3d77718a852e8ebdc9fa89a15a8
[INFO] running `Command { std: "docker" "start" "-a" "c172de22e7ba012803f26a89604571976da5b3d77718a852e8ebdc9fa89a15a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling object v0.28.4
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling regex-syntax v0.6.26
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]    Compiling miniz_oxide v0.5.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling regex v1.5.6
[INFO] [stderr]    Compiling addr2line v0.17.0
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling color-backtrace v0.3.0
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling workshop-chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.73s
[INFO] running `Command { std: "docker" "inspect" "c172de22e7ba012803f26a89604571976da5b3d77718a852e8ebdc9fa89a15a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c172de22e7ba012803f26a89604571976da5b3d77718a852e8ebdc9fa89a15a8", kill_on_drop: false }`
[INFO] [stdout] c172de22e7ba012803f26a89604571976da5b3d77718a852e8ebdc9fa89a15a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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-2026-03-05" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63d00d6f62837e15e2ec0663c1415a9928b4ab2afe08c5d4b05ac7035f97314a
[INFO] running `Command { std: "docker" "start" "-a" "63d00d6f62837e15e2ec0663c1415a9928b4ab2afe08c5d4b05ac7035f97314a", kill_on_drop: false }`
[INFO] [stderr]    Compiling workshop-chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Close` is never constructed
[INFO] [stdout]   --> examples/server.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | enum PeerMessage {
[INFO] [stdout]    |      ----------- variant in this enum
[INFO] [stdout] 29 |     Message { content: String },
[INFO] [stdout] 30 |     Close,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PeerMessage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Protocol` is never used
[INFO] [stdout]   --> examples/server.rs:34:6
[INFO] [stdout]    |
[INFO] [stdout] 34 | enum Protocol {}
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Close` is never constructed
[INFO] [stdout]   --> examples/server2.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum PeerMessage {
[INFO] [stdout]    |      ----------- variant in this enum
[INFO] [stdout] 28 |     Message { content: String },
[INFO] [stdout] 29 |     Close,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PeerMessage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `handler` is never read
[INFO] [stdout]   --> examples/server2.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Server<T: MsgHandler> {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 35 |     addr: String,
[INFO] [stdout] 36 |     handler: T,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "63d00d6f62837e15e2ec0663c1415a9928b4ab2afe08c5d4b05ac7035f97314a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63d00d6f62837e15e2ec0663c1415a9928b4ab2afe08c5d4b05ac7035f97314a", kill_on_drop: false }`
[INFO] [stdout] 63d00d6f62837e15e2ec0663c1415a9928b4ab2afe08c5d4b05ac7035f97314a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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-2026-03-05" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c5448e5993240d8edc6f4d5c2e512bc63b87590711776baea49aa30a1a07bdee
[INFO] running `Command { std: "docker" "start" "-a" "c5448e5993240d8edc6f4d5c2e512bc63b87590711776baea49aa30a1a07bdee", kill_on_drop: false }`
[INFO] [stderr] warning: variant `Close` is never constructed
[INFO] [stderr]   --> examples/server2.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum PeerMessage {
[INFO] [stderr]    |      ----------- variant in this enum
[INFO] [stderr] 28 |     Message { content: String },
[INFO] [stderr] 29 |     Close,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `PeerMessage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `handler` is never read
[INFO] [stderr]   --> examples/server2.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 34 | struct Server<T: MsgHandler> {
[INFO] [stderr]    |        ------ field in this struct
[INFO] [stderr] 35 |     addr: String,
[INFO] [stderr] 36 |     handler: T,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Close` is never constructed
[INFO] [stderr]   --> examples/server.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | enum PeerMessage {
[INFO] [stderr]    |      ----------- variant in this enum
[INFO] [stderr] 29 |     Message { content: String },
[INFO] [stderr] 30 |     Close,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `PeerMessage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Protocol` is never used
[INFO] [stderr]   --> examples/server.rs:34:6
[INFO] [stderr]    |
[INFO] [stderr] 34 | enum Protocol {}
[INFO] [stderr]    |      ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `workshop-chat` (example "server2") generated 2 warnings
[INFO] [stderr] warning: `workshop-chat` (example "server") generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/workshop_chat-9017a1b31509e979)
[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" "c5448e5993240d8edc6f4d5c2e512bc63b87590711776baea49aa30a1a07bdee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5448e5993240d8edc6f4d5c2e512bc63b87590711776baea49aa30a1a07bdee", kill_on_drop: false }`
[INFO] [stdout] c5448e5993240d8edc6f4d5c2e512bc63b87590711776baea49aa30a1a07bdee
