[INFO] fetching crate rill 0.21.0...
[INFO] testing rill-0.21.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate rill 0.21.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate rill 0.21.0
[INFO] finished tweaking crates.io crate rill 0.21.0
[INFO] tweaked toml for crates.io crate rill 0.21.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rill 0.21.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 171 packages to latest compatible versions
[INFO] [stderr]       Adding derive_more v0.99.20 (available: v2.0.1)
[INFO] [stderr]       Adding env_logger v0.8.4 (available: v0.11.8)
[INFO] [stderr]       Adding meio v0.82.0 (available: v0.97.0)
[INFO] [stderr]       Adding meio-connect v0.82.0 (available: v0.97.0)
[INFO] [stderr]       Adding rill-protocol v0.21.0 (available: v0.41.0)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da3d20ed79cd80fe2fd66de662a388bd9be483e13d42a6e5dd76ae737675bfda
[INFO] running `Command { std: "docker" "start" "-a" "da3d20ed79cd80fe2fd66de662a388bd9be483e13d42a6e5dd76ae737675bfda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da3d20ed79cd80fe2fd66de662a388bd9be483e13d42a6e5dd76ae737675bfda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da3d20ed79cd80fe2fd66de662a388bd9be483e13d42a6e5dd76ae737675bfda", kill_on_drop: false }`
[INFO] [stdout] da3d20ed79cd80fe2fd66de662a388bd9be483e13d42a6e5dd76ae737675bfda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] acbf4d4fc00fec5d5bfddec8fa78c14945d9f765638c98b41650997c42e2db11
[INFO] running `Command { std: "docker" "start" "-a" "acbf4d4fc00fec5d5bfddec8fa78c14945d9f765638c98b41650997c42e2db11", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling http v0.2.12
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]    Compiling input_buffer v0.4.0
[INFO] [stderr]    Compiling derive_more v0.99.20
[INFO] [stderr]    Compiling sha-1 v0.9.8
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling metacrate v0.1.2
[INFO] [stderr]    Compiling url v2.5.7
[INFO] [stderr]    Compiling meio-protocol v0.82.0
[INFO] [stderr]    Compiling serde_qs v0.8.5
[INFO] [stderr]    Compiling pin-project v1.1.10
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling headers-core v0.2.0
[INFO] [stderr]    Compiling headers v0.3.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling socket2 v0.6.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.6
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling socket2 v0.5.10
[INFO] [stderr]    Compiling rill-protocol v0.21.0
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling tungstenite v0.12.0
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling tokio-util v0.7.16
[INFO] [stderr]    Compiling tokio-util v0.6.10
[INFO] [stderr]    Compiling tokio-tungstenite v0.13.0
[INFO] [stderr]    Compiling meio v0.82.0
[INFO] [stderr]    Compiling h2 v0.3.27
[INFO] [stderr]    Compiling hyper v0.14.32
[INFO] [stderr]    Compiling meio-connect v0.82.0
[INFO] [stderr]    Compiling rill v0.21.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Internal` is never constructed
[INFO] [stdout]  --> src/protocol.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub struct Internal<T: Send + 'static>(pub T);
[INFO] [stdout]   |                ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 35.21s
[INFO] running `Command { std: "docker" "inspect" "acbf4d4fc00fec5d5bfddec8fa78c14945d9f765638c98b41650997c42e2db11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acbf4d4fc00fec5d5bfddec8fa78c14945d9f765638c98b41650997c42e2db11", kill_on_drop: false }`
[INFO] [stdout] acbf4d4fc00fec5d5bfddec8fa78c14945d9f765638c98b41650997c42e2db11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc3fe53d4d9f622c0dec4f90d250bd8fd53387c6b3ebb5c2c27d292f40190910
[INFO] running `Command { std: "docker" "start" "-a" "fc3fe53d4d9f622c0dec4f90d250bd8fd53387c6b3ebb5c2c27d292f40190910", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stdout] warning: struct `Internal` is never constructed
[INFO] [stdout]  --> src/protocol.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub struct Internal<T: Send + 'static>(pub T);
[INFO] [stdout]   |                ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling ctrlc v3.5.0
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling rill v0.21.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Internal` is never constructed
[INFO] [stdout]  --> src/protocol.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub struct Internal<T: Send + 'static>(pub T);
[INFO] [stdout]   |                ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 7.46s
[INFO] running `Command { std: "docker" "inspect" "fc3fe53d4d9f622c0dec4f90d250bd8fd53387c6b3ebb5c2c27d292f40190910", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc3fe53d4d9f622c0dec4f90d250bd8fd53387c6b3ebb5c2c27d292f40190910", kill_on_drop: false }`
[INFO] [stdout] fc3fe53d4d9f622c0dec4f90d250bd8fd53387c6b3ebb5c2c27d292f40190910
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 77810b87df967932d5b7940c6055fb1bd6107e789e4f0432e7ffe94c86176b63
[INFO] running `Command { std: "docker" "start" "-a" "77810b87df967932d5b7940c6055fb1bd6107e789e4f0432e7ffe94c86176b63", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Internal` is never constructed
[INFO] [stderr]  --> src/protocol.rs:6:16
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub struct Internal<T: Send + 'static>(pub T);
[INFO] [stderr]   |                ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rill` (lib) generated 1 warning
[INFO] [stderr] warning: `rill` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rill-367d34018f31545d)
[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 rill
[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" "77810b87df967932d5b7940c6055fb1bd6107e789e4f0432e7ffe94c86176b63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77810b87df967932d5b7940c6055fb1bd6107e789e4f0432e7ffe94c86176b63", kill_on_drop: false }`
[INFO] [stdout] 77810b87df967932d5b7940c6055fb1bd6107e789e4f0432e7ffe94c86176b63