[INFO] fetching crate brk_vecs 0.0.85...
[INFO] testing brk_vecs-0.0.85 against beta-2026-01-20 for beta-1.94-1
[INFO] extracting crate brk_vecs 0.0.85 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate brk_vecs 0.0.85
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate brk_vecs 0.0.85
[INFO] tweaked toml for crates.io crate brk_vecs 0.0.85 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate brk_vecs 0.0.85 on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate brk_vecs 0.0.85 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-2026-01-20" "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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce23e6f4dd0565bd7727f51adc46ffa383aaebd72ad7d3be0268a4d3932195fe
[INFO] running `Command { std: "docker" "start" "-a" "ce23e6f4dd0565bd7727f51adc46ffa383aaebd72ad7d3be0268a4d3932195fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce23e6f4dd0565bd7727f51adc46ffa383aaebd72ad7d3be0268a4d3932195fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce23e6f4dd0565bd7727f51adc46ffa383aaebd72ad7d3be0268a4d3932195fe", kill_on_drop: false }`
[INFO] [stdout] ce23e6f4dd0565bd7727f51adc46ffa383aaebd72ad7d3be0268a4d3932195fe
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d3e407d50b160438931c68544764dba2bc6072e22c01ce36fd57a64cce728be
[INFO] running `Command { std: "docker" "start" "-a" "5d3e407d50b160438931c68544764dba2bc6072e22c01ce36fd57a64cce728be", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling serde_json v1.0.142
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling brk_vecs_macros v0.0.85
[INFO] [stderr]    Compiling pco v0.4.6
[INFO] [stderr]    Compiling half v2.6.0
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling dtype_dispatch v0.1.1
[INFO] [stderr]    Compiling better_io v0.1.0
[INFO] [stderr]    Compiling brk_vecs v0.0.85 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling zerocopy-derive v0.8.26
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling memmap2 v0.9.7
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling ctrlc v3.4.7
[INFO] [stdout] warning: struct `FPunchhole` is never constructed
[INFO] [stdout]    --> src/file/mod.rs:611:8
[INFO] [stdout]     |
[INFO] [stdout] 611 | struct FPunchhole {
[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 10.57s
[INFO] running `Command { std: "docker" "inspect" "5d3e407d50b160438931c68544764dba2bc6072e22c01ce36fd57a64cce728be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d3e407d50b160438931c68544764dba2bc6072e22c01ce36fd57a64cce728be", kill_on_drop: false }`
[INFO] [stdout] 5d3e407d50b160438931c68544764dba2bc6072e22c01ce36fd57a64cce728be
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5039bca86069ab8188a38c2baa9a641cfe6573b2e9fbd9dd10a64bfdddf8118e
[INFO] running `Command { std: "docker" "start" "-a" "5039bca86069ab8188a38c2baa9a641cfe6573b2e9fbd9dd10a64bfdddf8118e", kill_on_drop: false }`
[INFO] [stderr]    Compiling brk_vecs v0.0.85 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `FPunchhole` is never constructed
[INFO] [stdout]    --> src/file/mod.rs:611:8
[INFO] [stdout]     |
[INFO] [stdout] 611 | struct FPunchhole {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FPunchhole` is never constructed
[INFO] [stdout]    --> src/file/mod.rs:611:8
[INFO] [stdout]     |
[INFO] [stdout] 611 | struct FPunchhole {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.35s
[INFO] running `Command { std: "docker" "inspect" "5039bca86069ab8188a38c2baa9a641cfe6573b2e9fbd9dd10a64bfdddf8118e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5039bca86069ab8188a38c2baa9a641cfe6573b2e9fbd9dd10a64bfdddf8118e", kill_on_drop: false }`
[INFO] [stdout] 5039bca86069ab8188a38c2baa9a641cfe6573b2e9fbd9dd10a64bfdddf8118e
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c33c772de393146008638b3b0cee2074f0a11ad968b029e892d5cc38465f6c34
[INFO] running `Command { std: "docker" "start" "-a" "c33c772de393146008638b3b0cee2074f0a11ad968b029e892d5cc38465f6c34", kill_on_drop: false }`
[INFO] [stderr] warning: struct `FPunchhole` is never constructed
[INFO] [stderr]    --> src/file/mod.rs:611:8
[INFO] [stderr]     |
[INFO] [stderr] 611 | struct FPunchhole {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `brk_vecs` (lib) generated 1 warning
[INFO] [stderr] warning: `brk_vecs` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/brk_vecs-e15d683db2e14bd5)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests brk_vecs
[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] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 18) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 447) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 18) stdout ----
[INFO] [stdout] Test executable failed (exit status: 1).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] Error: IO(Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" })
[INFO] [stdout] Error: "the test returned a termination value with a non-zero status code (1) which indicates a failure"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 447) stdout ----
[INFO] [stdout] Test executable failed (exit status: 1).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] Error: IO(Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" })
[INFO] [stdout] Error: "the test returned a termination value with a non-zero status code (1) which indicates a failure"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 18)
[INFO] [stdout]     src/lib.rs - (line 447)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 1.55s; merged doctests compilation took 1.53s
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "c33c772de393146008638b3b0cee2074f0a11ad968b029e892d5cc38465f6c34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c33c772de393146008638b3b0cee2074f0a11ad968b029e892d5cc38465f6c34", kill_on_drop: false }`
[INFO] [stdout] c33c772de393146008638b3b0cee2074f0a11ad968b029e892d5cc38465f6c34
