[INFO] fetching crate rbtree_rust 0.1.0...
[INFO] testing rbtree_rust-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rbtree_rust 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate rbtree_rust 0.1.0
[INFO] finished tweaking crates.io crate rbtree_rust 0.1.0
[INFO] tweaked toml for crates.io crate rbtree_rust 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rbtree_rust 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] crate crates.io crate rbtree_rust 0.1.0 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
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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_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] cec67d4e288da907541d9f741d7c841c540e528ea529bf39371a72ce5d192694
[INFO] running `Command { std: "docker" "start" "-a" "cec67d4e288da907541d9f741d7c841c540e528ea529bf39371a72ce5d192694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cec67d4e288da907541d9f741d7c841c540e528ea529bf39371a72ce5d192694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cec67d4e288da907541d9f741d7c841c540e528ea529bf39371a72ce5d192694", kill_on_drop: false }`
[INFO] [stdout] cec67d4e288da907541d9f741d7c841c540e528ea529bf39371a72ce5d192694
[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] 8da75823bf95b82ffe6e2b080b88657f37e9793dd69ea4ea1d6b3424dac59938
[INFO] running `Command { std: "docker" "start" "-a" "8da75823bf95b82ffe6e2b080b88657f37e9793dd69ea4ea1d6b3424dac59938", kill_on_drop: false }`
[INFO] [stderr]    Compiling rbtree_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `read_blocks_from_file` is never used
[INFO] [stdout]  --> src/utils.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn read_blocks_from_file<T>(path: &str, array: &mut [T], count: usize) -> io::Result<()> {
[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 0.12s
[INFO] running `Command { std: "docker" "inspect" "8da75823bf95b82ffe6e2b080b88657f37e9793dd69ea4ea1d6b3424dac59938", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8da75823bf95b82ffe6e2b080b88657f37e9793dd69ea4ea1d6b3424dac59938", kill_on_drop: false }`
[INFO] [stdout] 8da75823bf95b82ffe6e2b080b88657f37e9793dd69ea4ea1d6b3424dac59938
[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] 13bb1ac721ffa7732708a52ef2211ca46d7386894e798ede102fe58ed74178da
[INFO] running `Command { std: "docker" "start" "-a" "13bb1ac721ffa7732708a52ef2211ca46d7386894e798ede102fe58ed74178da", kill_on_drop: false }`
[INFO] [stdout] warning: function `read_blocks_from_file` is never used
[INFO] [stdout]  --> src/utils.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn read_blocks_from_file<T>(path: &str, array: &mut [T], count: usize) -> io::Result<()> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rbtree_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "13bb1ac721ffa7732708a52ef2211ca46d7386894e798ede102fe58ed74178da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13bb1ac721ffa7732708a52ef2211ca46d7386894e798ede102fe58ed74178da", kill_on_drop: false }`
[INFO] [stdout] 13bb1ac721ffa7732708a52ef2211ca46d7386894e798ede102fe58ed74178da
[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", kill_on_drop: false }`
[INFO] [stdout] a7e0d3edbf9fa84676ef4716680cbcbb2ceec9e6f2ed2fc174705964bc5ffa30
[INFO] running `Command { std: "docker" "start" "-a" "a7e0d3edbf9fa84676ef4716680cbcbb2ceec9e6f2ed2fc174705964bc5ffa30", kill_on_drop: false }`
[INFO] [stderr] warning: function `read_blocks_from_file` is never used
[INFO] [stderr]  --> src/utils.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn read_blocks_from_file<T>(path: &str, array: &mut [T], count: usize) -> io::Result<()> {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rbtree_rust` (lib) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rbtree_rust-90d180b5cfadd430)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test utils::test::read_10xi32_from_urandom ... ok
[INFO] [stdout] test test::debug ... ok
[INFO] [stdout] test test::stress ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rbtree_rust
[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" "a7e0d3edbf9fa84676ef4716680cbcbb2ceec9e6f2ed2fc174705964bc5ffa30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7e0d3edbf9fa84676ef4716680cbcbb2ceec9e6f2ed2fc174705964bc5ffa30", kill_on_drop: false }`
[INFO] [stdout] a7e0d3edbf9fa84676ef4716680cbcbb2ceec9e6f2ed2fc174705964bc5ffa30
