[INFO] fetching crate rill 0.21.0...
[INFO] testing rill-0.21.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rill 0.21.0 into /workspace/builds/worker-1-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-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rill 0.21.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 164 packages to latest compatible versions
[INFO] [stderr]       Adding derive_more v0.99.20 (available: v2.1.1)
[INFO] [stderr]       Adding env_logger v0.8.4 (available: v0.11.10)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[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: v2.0.18)
[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-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-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9473df61161c42eef932ad3db67afdb114482ec4d9c658405ae6d5cf2f8fc512
[INFO] running `Command { std: "docker" "start" "-a" "9473df61161c42eef932ad3db67afdb114482ec4d9c658405ae6d5cf2f8fc512", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9473df61161c42eef932ad3db67afdb114482ec4d9c658405ae6d5cf2f8fc512", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9473df61161c42eef932ad3db67afdb114482ec4d9c658405ae6d5cf2f8fc512", kill_on_drop: false }`
[INFO] [stdout] 9473df61161c42eef932ad3db67afdb114482ec4d9c658405ae6d5cf2f8fc512
[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-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5970146d28d78aaaccf7ca1dae7c00a73da281138128ed5712b5e0a6dfcab24
[INFO] running `Command { std: "docker" "start" "-a" "e5970146d28d78aaaccf7ca1dae7c00a73da281138128ed5712b5e0a6dfcab24", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling typenum v1.20.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling futures-sink v0.3.32
[INFO] [stderr]    Compiling futures-core v0.3.32
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling futures-io v0.3.32
[INFO] [stderr]    Compiling slab v0.4.12
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]    Compiling percent-encoding v2.3.2
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling opaque-debug v0.3.1
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling hashbrown v0.17.0
[INFO] [stderr]    Compiling input_buffer v0.4.0
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling try-lock v0.2.5
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling httpdate v1.0.3
[INFO] [stderr]    Compiling want v0.3.1
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling headers-core v0.2.0
[INFO] [stderr]    Compiling mime v0.3.17
[INFO] [stderr]    Compiling tower-service v0.3.3
[INFO] [stderr]    Compiling base64 v0.21.7
[INFO] [stderr]    Compiling metacrate v0.1.2
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling indexmap v2.14.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling sha-1 v0.9.8
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling headers v0.3.9
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling socket2 v0.6.3
[INFO] [stderr]    Compiling mio v1.2.0
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling socket2 v0.5.10
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.3
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling tokio-macros v2.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling derive_more v0.99.20
[INFO] [stderr]    Compiling pin-project-internal v1.1.11
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]    Compiling zerofrom-derive v0.1.7
[INFO] [stderr]    Compiling yoke-derive v0.8.2
[INFO] [stderr]    Compiling tokio v1.52.1
[INFO] [stderr]    Compiling pin-project v1.1.11
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling zerofrom v0.1.7
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling yoke v0.8.2
[INFO] [stderr]    Compiling zerotrie v0.2.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling zerovec v0.11.6
[INFO] [stderr]    Compiling rand v0.8.6
[INFO] [stderr]    Compiling tinystr v0.8.3
[INFO] [stderr]    Compiling potential_utf v0.1.5
[INFO] [stderr]    Compiling icu_collections v2.2.0
[INFO] [stderr]    Compiling icu_locale_core v2.2.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling futures-executor v0.3.32
[INFO] [stderr]    Compiling futures v0.3.32
[INFO] [stderr]    Compiling meio-protocol v0.82.0
[INFO] [stderr]    Compiling serde_qs v0.8.5
[INFO] [stderr]    Compiling icu_provider v2.2.0
[INFO] [stderr]    Compiling rill-protocol v0.21.0
[INFO] [stderr]    Compiling icu_normalizer v2.2.0
[INFO] [stderr]    Compiling icu_properties v2.2.0
[INFO] [stderr]    Compiling idna_adapter v1.2.1
[INFO] [stderr]    Compiling idna v1.1.0
[INFO] [stderr]    Compiling url v2.5.8
[INFO] [stderr]    Compiling tungstenite v0.12.0
[INFO] [stderr]    Compiling tokio-util v0.7.18
[INFO] [stderr]    Compiling tokio-util v0.6.10
[INFO] [stderr]    Compiling tokio-tungstenite v0.13.0
[INFO] [stderr]    Compiling h2 v0.3.27
[INFO] [stderr]    Compiling meio v0.82.0
[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 41.93s
[INFO] running `Command { std: "docker" "inspect" "e5970146d28d78aaaccf7ca1dae7c00a73da281138128ed5712b5e0a6dfcab24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5970146d28d78aaaccf7ca1dae7c00a73da281138128ed5712b5e0a6dfcab24", kill_on_drop: false }`
[INFO] [stdout] e5970146d28d78aaaccf7ca1dae7c00a73da281138128ed5712b5e0a6dfcab24
[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-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0448f59a920354808bd2ae09bf301da6585d5000c9398434203ee76902653f7
[INFO] running `Command { std: "docker" "start" "-a" "b0448f59a920354808bd2ae09bf301da6585d5000c9398434203ee76902653f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling nix v0.31.2
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling bitflags v2.11.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling humantime v2.3.0
[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 ctrlc v3.5.2
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling regex v1.12.3
[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 7.20s
[INFO] running `Command { std: "docker" "inspect" "b0448f59a920354808bd2ae09bf301da6585d5000c9398434203ee76902653f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0448f59a920354808bd2ae09bf301da6585d5000c9398434203ee76902653f7", kill_on_drop: false }`
[INFO] [stdout] b0448f59a920354808bd2ae09bf301da6585d5000c9398434203ee76902653f7
[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-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3c789757e22422feb22e474ea5d6e70552a0b0b2a9ba6e968f4b4493be1085e1
[INFO] running `Command { std: "docker" "start" "-a" "3c789757e22422feb22e474ea5d6e70552a0b0b2a9ba6e968f4b4493be1085e1", 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-a13a50dd48ea5ca4)
[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" "3c789757e22422feb22e474ea5d6e70552a0b0b2a9ba6e968f4b4493be1085e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c789757e22422feb22e474ea5d6e70552a0b0b2a9ba6e968f4b4493be1085e1", kill_on_drop: false }`
[INFO] [stdout] 3c789757e22422feb22e474ea5d6e70552a0b0b2a9ba6e968f4b4493be1085e1
