[INFO] fetching crate sedimentree_core 0.10.0...
[INFO] testing sedimentree_core-0.10.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate sedimentree_core 0.10.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate sedimentree_core 0.10.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate sedimentree_core 0.10.0
[INFO] tweaked toml for crates.io crate sedimentree_core 0.10.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sedimentree_core 0.10.0 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] crate crates.io crate sedimentree_core 0.10.0 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] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stdout] 23199af6d49e5b5e5bdb2a0a19ff9150c7cedb4fa314038d0cc28c06400d1112
[INFO] running `Command { std: "docker" "start" "-a" "23199af6d49e5b5e5bdb2a0a19ff9150c7cedb4fa314038d0cc28c06400d1112", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23199af6d49e5b5e5bdb2a0a19ff9150c7cedb4fa314038d0cc28c06400d1112", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23199af6d49e5b5e5bdb2a0a19ff9150c7cedb4fa314038d0cc28c06400d1112", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] eeeb6056cd745bba75a7749f233186a4f75f2b05ba34269cf92ef82df2fa953e
[INFO] running `Command { std: "docker" "start" "-a" "eeeb6056cd745bba75a7749f233186a4f75f2b05ba34269cf92ef82df2fa953e", kill_on_drop: false }`
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[INFO] [stderr]    Compiling sedimentree_core v0.10.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.67s
[INFO] running `Command { std: "docker" "inspect" "eeeb6056cd745bba75a7749f233186a4f75f2b05ba34269cf92ef82df2fa953e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eeeb6056cd745bba75a7749f233186a4f75f2b05ba34269cf92ef82df2fa953e", kill_on_drop: false }`
[INFO] [stdout] eeeb6056cd745bba75a7749f233186a4f75f2b05ba34269cf92ef82df2fa953e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 78105ec7928b0adfd3aa97c97c444ba8268fecf4d5a2c29dee1f095ba247f265
[INFO] running `Command { std: "docker" "start" "-a" "78105ec7928b0adfd3aa97c97c444ba8268fecf4d5a2c29dee1f095ba247f265", kill_on_drop: false }`
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[INFO] [stderr]    Compiling sedimentree_core v0.10.0 (/opt/rustwide/workdir)
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[INFO] [stdout] error[E0432]: unresolved import `sedimentree_core::test_utils`
[INFO] [stdout]   --> tests/build_fragment_store.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     test_utils::{TestGraph, seeded_rng},
[INFO] [stdout]    |     ^^^^^^^^^^ could not find `test_utils` in `sedimentree_core`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> src/lib.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | #[cfg(any(test, feature = "test_utils"))]
[INFO] [stdout]    |          ------------------------------ the item is gated here
[INFO] [stdout] 37 | #[cfg_attr(docsrs, doc(cfg(feature = "test_utils")))]
[INFO] [stdout] 38 | pub mod test_utils;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `rand` in this scope
[INFO] [stdout]   --> src/test_utils.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use rand::{Rng, SeedableRng, rngs::SmallRng};
[INFO] [stdout]    |     ^^^^ use of unresolved module or unlinked crate `rand`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `rand`, use `cargo add rand` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand`
[INFO] [stdout]   --> src/test_utils.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use rand::{Rng, SeedableRng, rngs::SmallRng};
[INFO] [stdout]    |     ^^^^ use of unresolved module or unlinked crate `rand`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `rand`, use `cargo add rand` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Vec` in this scope
[INFO] [stdout]     --> src/sedimentree.rs:3742:34
[INFO] [stdout]      |
[INFO] [stdout] 3742 |             let resolved_before: Vec<CommitId> = resolver
[INFO] [stdout]      |                                  ^^^ not found in this scope
[INFO] [stdout]      |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]      |
[INFO] [stdout] 3711 +         use crate::sedimentree::Vec;
[INFO] [stdout]      |
[INFO] [stdout] 3711 +         use alloc::vec::Vec;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Vec` in this scope
[INFO] [stdout]     --> src/sedimentree.rs:3770:33
[INFO] [stdout]      |
[INFO] [stdout] 3770 |             let resolved_after: Vec<CommitId> = resolver
[INFO] [stdout]      |                                 ^^^ not found in this scope
[INFO] [stdout]      |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]      |
[INFO] [stdout] 3711 +         use crate::sedimentree::Vec;
[INFO] [stdout]      |
[INFO] [stdout] 3711 +         use alloc::vec::Vec;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sedimentree_core` (test "build_fragment_store") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sedimentree_core` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "78105ec7928b0adfd3aa97c97c444ba8268fecf4d5a2c29dee1f095ba247f265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78105ec7928b0adfd3aa97c97c444ba8268fecf4d5a2c29dee1f095ba247f265", kill_on_drop: false }`
[INFO] [stdout] 78105ec7928b0adfd3aa97c97c444ba8268fecf4d5a2c29dee1f095ba247f265
