[INFO] fetching crate ratatui_ffi 0.2.6...
[INFO] testing ratatui_ffi-0.2.6 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate ratatui_ffi 0.2.6 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate ratatui_ffi 0.2.6
[INFO] finished tweaking crates.io crate ratatui_ffi 0.2.6
[INFO] tweaked toml for crates.io crate ratatui_ffi 0.2.6 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ratatui_ffi 0.2.6 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 crates.io crate ratatui_ffi 0.2.6 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 005bf0d2a189a99d73554bc52d8ce075e867eca7149f30988d7c9ffbd992fb8b
[INFO] running `Command { std: "docker" "start" "-a" "005bf0d2a189a99d73554bc52d8ce075e867eca7149f30988d7c9ffbd992fb8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "005bf0d2a189a99d73554bc52d8ce075e867eca7149f30988d7c9ffbd992fb8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "005bf0d2a189a99d73554bc52d8ce075e867eca7149f30988d7c9ffbd992fb8b", kill_on_drop: false }`
[INFO] [stdout] 005bf0d2a189a99d73554bc52d8ce075e867eca7149f30988d7c9ffbd992fb8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b8296d53b0fbab89607fbaa468010c9de96822708a5cc731633c9bec902e41fd
[INFO] running `Command { std: "docker" "start" "-a" "b8296d53b0fbab89607fbaa468010c9de96822708a5cc731633c9bec902e41fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling instability v0.3.9
[INFO] [stderr]    Compiling portable-atomic v1.11.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling indoc v2.0.6
[INFO] [stderr]    Compiling compact_str v0.8.1
[INFO] [stderr]    Compiling console v0.15.11
[INFO] [stderr]    Compiling lru v0.12.5
[INFO] [stderr]    Compiling cassowary v0.3.0
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling signal-hook-mio v0.2.4
[INFO] [stderr]    Compiling crossterm v0.27.0
[INFO] [stderr]    Compiling crossterm v0.28.1
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling indicatif v0.17.11
[INFO] [stderr]    Compiling unicode-truncate v1.1.0
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling strum_macros v0.26.4
[INFO] [stderr]    Compiling strum v0.26.3
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling ratatui v0.29.0
[INFO] [stderr]    Compiling ratatui_ffi v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> tools/ffi_introspect.rs:2338:21
[INFO] [stdout]      |
[INFO] [stdout] 2338 |                 let mut lines = txt.lines().collect::<Vec<_>>();
[INFO] [stdout]      |                     ----^^^^^
[INFO] [stdout]      |                     |
[INFO] [stdout]      |                     help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value_snippet` is never read
[INFO] [stdout]    --> tools/ffi_introspect.rs:814:5
[INFO] [stdout]     |
[INFO] [stdout] 811 | struct PubConst {
[INFO] [stdout]     |        -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 814 |     value_snippet: Option<String>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `PubConst` has derived impls for the traits `Clone` and `Debug`, but these are 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: variable does not need to be mutable
[INFO] [stdout]    --> src/ffi/widgets/list.rs:198:21
[INFO] [stdout]     |
[INFO] [stdout] 198 |         if let Some(mut sel) = s.selected {
[INFO] [stdout]     |                     ----^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ffi/widgets/list.rs:205:13
[INFO] [stdout]     |
[INFO] [stdout] 205 |         let mut off = s.offset;
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]    --> src/ffi/widgets/list.rs:197:13
[INFO] [stdout]     |
[INFO] [stdout] 197 |         let count = l.items.len();
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ffi/widgets/list.rs:442:25
[INFO] [stdout]     |
[INFO] [stdout] 442 |             if let Some(mut sel) = l.selected {
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.88s
[INFO] running `Command { std: "docker" "inspect" "b8296d53b0fbab89607fbaa468010c9de96822708a5cc731633c9bec902e41fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8296d53b0fbab89607fbaa468010c9de96822708a5cc731633c9bec902e41fd", kill_on_drop: false }`
[INFO] [stdout] b8296d53b0fbab89607fbaa468010c9de96822708a5cc731633c9bec902e41fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] e36446b6604302bdb262ede5d0ac73aa03cbdefe10b7f1760d9ec062fcc4a96c
[INFO] running `Command { std: "docker" "start" "-a" "e36446b6604302bdb262ede5d0ac73aa03cbdefe10b7f1760d9ec062fcc4a96c", kill_on_drop: false }`
[INFO] [stderr]    Compiling ratatui_ffi v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> tools/ffi_introspect.rs:2338:21
[INFO] [stdout]      |
[INFO] [stdout] 2338 |                 let mut lines = txt.lines().collect::<Vec<_>>();
[INFO] [stdout]      |                     ----^^^^^
[INFO] [stdout]      |                     |
[INFO] [stdout]      |                     help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value_snippet` is never read
[INFO] [stdout]    --> tools/ffi_introspect.rs:814:5
[INFO] [stdout]     |
[INFO] [stdout] 811 | struct PubConst {
[INFO] [stdout]     |        -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 814 |     value_snippet: Option<String>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `PubConst` has derived impls for the traits `Clone` and `Debug`, but these are 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: variable does not need to be mutable
[INFO] [stdout]    --> src/ffi/widgets/list.rs:198:21
[INFO] [stdout]     |
[INFO] [stdout] 198 |         if let Some(mut sel) = s.selected {
[INFO] [stdout]     |                     ----^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ffi/widgets/list.rs:205:13
[INFO] [stdout]     |
[INFO] [stdout] 205 |         let mut off = s.offset;
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]    --> src/ffi/widgets/list.rs:197:13
[INFO] [stdout]     |
[INFO] [stdout] 197 |         let count = l.items.len();
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ffi/widgets/list.rs:442:25
[INFO] [stdout]     |
[INFO] [stdout] 442 |             if let Some(mut sel) = l.selected {
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `Command { std: "docker" "inspect" "e36446b6604302bdb262ede5d0ac73aa03cbdefe10b7f1760d9ec062fcc4a96c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e36446b6604302bdb262ede5d0ac73aa03cbdefe10b7f1760d9ec062fcc4a96c", kill_on_drop: false }`
[INFO] [stdout] e36446b6604302bdb262ede5d0ac73aa03cbdefe10b7f1760d9ec062fcc4a96c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] d598963cc8cebc7f4bf87f9e0acf05a2c0ad7bc6a3d19ef6e4d0a9c4cabaf4f4
[INFO] running `Command { std: "docker" "start" "-a" "d598963cc8cebc7f4bf87f9e0acf05a2c0ad7bc6a3d19ef6e4d0a9c4cabaf4f4", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> tools/ffi_introspect.rs:2338:21
[INFO] [stderr]      |
[INFO] [stderr] 2338 |                 let mut lines = txt.lines().collect::<Vec<_>>();
[INFO] [stderr]      |                     ----^^^^^
[INFO] [stderr]      |                     |
[INFO] [stderr]      |                     help: remove this `mut`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `value_snippet` is never read
[INFO] [stderr]    --> tools/ffi_introspect.rs:814:5
[INFO] [stderr]     |
[INFO] [stderr] 811 | struct PubConst {
[INFO] [stderr]     |        -------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 814 |     value_snippet: Option<String>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `PubConst` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ffi/widgets/list.rs:198:21
[INFO] [stderr]     |
[INFO] [stderr] 198 |         if let Some(mut sel) = s.selected {
[INFO] [stderr]     |                     ----^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ffi/widgets/list.rs:205:13
[INFO] [stderr]     |
[INFO] [stderr] 205 |         let mut off = s.offset;
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `count`
[INFO] [stderr]    --> src/ffi/widgets/list.rs:197:13
[INFO] [stderr]     |
[INFO] [stderr] 197 |         let count = l.items.len();
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ffi/widgets/list.rs:442:25
[INFO] [stderr]     |
[INFO] [stderr] 442 |             if let Some(mut sel) = l.selected {
[INFO] [stderr]     |                         ----^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `ratatui_ffi` (bin "ffi_introspect" test) generated 2 warnings (run `cargo fix --bin "ffi_introspect" -p ratatui_ffi --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `ratatui_ffi` (lib test) generated 4 warnings (run `cargo fix --lib -p ratatui_ffi --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ratatui_ffi-13c733ac41bfb9a5)
[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 tools/ffi_introspect.rs (/opt/rustwide/target/debug/deps/ffi_introspect-c77d74b8f6b72c88)
[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 tools/gen_header.rs (/opt/rustwide/target/debug/deps/gen_header-b24491cb6879e016)
[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" "d598963cc8cebc7f4bf87f9e0acf05a2c0ad7bc6a3d19ef6e4d0a9c4cabaf4f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d598963cc8cebc7f4bf87f9e0acf05a2c0ad7bc6a3d19ef6e4d0a9c4cabaf4f4", kill_on_drop: false }`
[INFO] [stdout] d598963cc8cebc7f4bf87f9e0acf05a2c0ad7bc6a3d19ef6e4d0a9c4cabaf4f4
