[INFO] fetching crate lets_expect_core 0.5.1...
[INFO] testing lets_expect_core-0.5.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate lets_expect_core 0.5.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate lets_expect_core 0.5.1
[INFO] finished tweaking crates.io crate lets_expect_core 0.5.1
[INFO] tweaked toml for crates.io crate lets_expect_core 0.5.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lets_expect_core 0.5.1 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 38 packages to latest compatible versions
[INFO] [stderr]       Adding colored v2.2.0 (available: v3.0.0)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.106)
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3787beb2834609350b756b4d8a3fb53a1300c4968f90f88e62d21f8e5df6abb6
[INFO] running `Command { std: "docker" "start" "-a" "3787beb2834609350b756b4d8a3fb53a1300c4968f90f88e62d21f8e5df6abb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3787beb2834609350b756b4d8a3fb53a1300c4968f90f88e62d21f8e5df6abb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3787beb2834609350b756b4d8a3fb53a1300c4968f90f88e62d21f8e5df6abb6", kill_on_drop: false }`
[INFO] [stdout] 3787beb2834609350b756b4d8a3fb53a1300c4968f90f88e62d21f8e5df6abb6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 17a8f9f50b6ab96eed6c4c008035b08131c0f14ddc6ca1d5be533635ea790e0c
[INFO] running `Command { std: "docker" "start" "-a" "17a8f9f50b6ab96eed6c4c008035b08131c0f14ddc6ca1d5be533635ea790e0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling topological-sort v0.2.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling colored v2.2.0
[INFO] [stderr]    Compiling english-numbers v0.3.3
[INFO] [stderr]    Compiling lets_expect_core v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/after_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct AfterBlock {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::after,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/before_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct BeforeBlock {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::before,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/story_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct StoryBlock {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::story,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/to_block.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ToBlock {
[INFO] [stdout]   |            ------- field in this struct
[INFO] [stdout] 7 |     pub keyword: keyword::to,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.25s
[INFO] running `Command { std: "docker" "inspect" "17a8f9f50b6ab96eed6c4c008035b08131c0f14ddc6ca1d5be533635ea790e0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17a8f9f50b6ab96eed6c4c008035b08131c0f14ddc6ca1d5be533635ea790e0c", kill_on_drop: false }`
[INFO] [stdout] 17a8f9f50b6ab96eed6c4c008035b08131c0f14ddc6ca1d5be533635ea790e0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c8e21cd75369508f4a7f099785fe4edaab336449de786a3330f229168a58151a
[INFO] running `Command { std: "docker" "start" "-a" "c8e21cd75369508f4a7f099785fe4edaab336449de786a3330f229168a58151a", kill_on_drop: false }`
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/after_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct AfterBlock {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::after,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/before_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct BeforeBlock {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::before,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/story_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct StoryBlock {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::story,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lets_expect_core v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/to_block.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ToBlock {
[INFO] [stdout]   |            ------- field in this struct
[INFO] [stdout] 7 |     pub keyword: keyword::to,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/after_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct AfterBlock {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::after,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/before_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct BeforeBlock {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::before,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/story_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct StoryBlock {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::story,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/to_block.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ToBlock {
[INFO] [stdout]   |            ------- field in this struct
[INFO] [stdout] 7 |     pub keyword: keyword::to,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "c8e21cd75369508f4a7f099785fe4edaab336449de786a3330f229168a58151a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8e21cd75369508f4a7f099785fe4edaab336449de786a3330f229168a58151a", kill_on_drop: false }`
[INFO] [stdout] c8e21cd75369508f4a7f099785fe4edaab336449de786a3330f229168a58151a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 400930d16b69c385f32c2628269c9d0be7302f153dd2d772ad33d76e45fa1da6
[INFO] running `Command { std: "docker" "start" "-a" "400930d16b69c385f32c2628269c9d0be7302f153dd2d772ad33d76e45fa1da6", kill_on_drop: false }`
[INFO] [stderr] warning: field `keyword` is never read
[INFO] [stderr]  --> src/core/after_block.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct AfterBlock {
[INFO] [stderr]   |            ---------- field in this struct
[INFO] [stderr] 6 |     pub keyword: keyword::after,
[INFO] [stderr]   |         ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `keyword` is never read
[INFO] [stderr]  --> src/core/before_block.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct BeforeBlock {
[INFO] [stderr]   |            ----------- field in this struct
[INFO] [stderr] 6 |     pub keyword: keyword::before,
[INFO] [stderr]   |         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `keyword` is never read
[INFO] [stderr]  --> src/core/story_block.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct StoryBlock {
[INFO] [stderr]   |            ---------- field in this struct
[INFO] [stderr] 6 |     pub keyword: keyword::story,
[INFO] [stderr]   |         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `keyword` is never read
[INFO] [stderr]  --> src/core/to_block.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct ToBlock {
[INFO] [stderr]   |            ------- field in this struct
[INFO] [stderr] 7 |     pub keyword: keyword::to,
[INFO] [stderr]   |         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `lets_expect_core` (lib) generated 4 warnings
[INFO] [stderr] warning: `lets_expect_core` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lets_expect_core-34d85f33f7c183bb)
[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 lets_expect_core
[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" "400930d16b69c385f32c2628269c9d0be7302f153dd2d772ad33d76e45fa1da6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "400930d16b69c385f32c2628269c9d0be7302f153dd2d772ad33d76e45fa1da6", kill_on_drop: false }`
[INFO] [stdout] 400930d16b69c385f32c2628269c9d0be7302f153dd2d772ad33d76e45fa1da6