[INFO] fetching crate tree-experiments 0.1.0...
[INFO] testing tree-experiments-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate tree-experiments 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate tree-experiments 0.1.0
[INFO] finished tweaking crates.io crate tree-experiments 0.1.0
[INFO] tweaked toml for crates.io crate tree-experiments 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tree-experiments 0.1.0 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 15 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2075442a9a64b6d5a72a5ebc36cc066190d5ce354bfb45d1f296d3d9fd370681
[INFO] running `Command { std: "docker" "start" "-a" "2075442a9a64b6d5a72a5ebc36cc066190d5ce354bfb45d1f296d3d9fd370681", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2075442a9a64b6d5a72a5ebc36cc066190d5ce354bfb45d1f296d3d9fd370681", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2075442a9a64b6d5a72a5ebc36cc066190d5ce354bfb45d1f296d3d9fd370681", kill_on_drop: false }`
[INFO] [stdout] 2075442a9a64b6d5a72a5ebc36cc066190d5ce354bfb45d1f296d3d9fd370681
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 762927d1db217b10cc93fe5b3947d79d3cb9b15b6a79fa79347d8edf3f08ff7c
[INFO] running `Command { std: "docker" "start" "-a" "762927d1db217b10cc93fe5b3947d79d3cb9b15b6a79fa79347d8edf3f08ff7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling swap3 v0.2.1
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.6
[INFO] [stderr]    Compiling tree-experiments v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.44s
[INFO] running `Command { std: "docker" "inspect" "762927d1db217b10cc93fe5b3947d79d3cb9b15b6a79fa79347d8edf3f08ff7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "762927d1db217b10cc93fe5b3947d79d3cb9b15b6a79fa79347d8edf3f08ff7c", kill_on_drop: false }`
[INFO] [stdout] 762927d1db217b10cc93fe5b3947d79d3cb9b15b6a79fa79347d8edf3f08ff7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 275da8433a2d5286c7ba598c327a692bb042ed6e9d4f66cb8a732792dc570e17
[INFO] running `Command { std: "docker" "start" "-a" "275da8433a2d5286c7ba598c327a692bb042ed6e9d4f66cb8a732792dc570e17", kill_on_drop: false }`
[INFO] [stderr]    Compiling tree-experiments v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: cannot find module or crate `trees` in this scope
[INFO] [stdout]  --> tests/binary_min_heap.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use trees::binary::BinaryMinHeap;
[INFO] [stdout]   |     ^^^^^ use of unresolved module or unlinked crate `trees`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `trees`, use `cargo add trees` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tree-experiments` (test "binary_min_heap") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0433]: cannot find module or crate `trees` in this scope
[INFO] [stdout]  --> tests/binary_max_heap.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use trees::binary::BinaryMaxHeap;
[INFO] [stdout]   |     ^^^^^ use of unresolved module or unlinked crate `trees`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `trees`, use `cargo add trees` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tree-experiments` (test "binary_max_heap") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "275da8433a2d5286c7ba598c327a692bb042ed6e9d4f66cb8a732792dc570e17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "275da8433a2d5286c7ba598c327a692bb042ed6e9d4f66cb8a732792dc570e17", kill_on_drop: false }`
[INFO] [stdout] 275da8433a2d5286c7ba598c327a692bb042ed6e9d4f66cb8a732792dc570e17
