[INFO] fetching crate sparsela 0.2.3...
[INFO] testing sparsela-0.2.3 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate sparsela 0.2.3 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate sparsela 0.2.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate sparsela 0.2.3
[INFO] tweaked toml for crates.io crate sparsela 0.2.3 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sparsela 0.2.3 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 sparsela 0.2.3 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 904a1c2ecdb69b24b1e6dc498821fdc859226a66c120f66f12dfe5b127aa0ba3
[INFO] running `Command { std: "docker" "start" "-a" "904a1c2ecdb69b24b1e6dc498821fdc859226a66c120f66f12dfe5b127aa0ba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "904a1c2ecdb69b24b1e6dc498821fdc859226a66c120f66f12dfe5b127aa0ba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "904a1c2ecdb69b24b1e6dc498821fdc859226a66c120f66f12dfe5b127aa0ba3", kill_on_drop: false }`
[INFO] [stdout] 904a1c2ecdb69b24b1e6dc498821fdc859226a66c120f66f12dfe5b127aa0ba3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 5dfcc415630d54d5bb937888c5cec5b5c3a610f33a08658c45129629c340554e
[INFO] running `Command { std: "docker" "start" "-a" "5dfcc415630d54d5bb937888c5cec5b5c3a610f33a08658c45129629c340554e", kill_on_drop: false }`
[INFO] [stderr]    Compiling sparsela v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `iter_forward_exclusive` is never used
[INFO] [stdout]   --> src/rbtree/mod.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl<K, V> RBtreeNode<K, V> {
[INFO] [stdout]    | --------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 73 |     pub fn iter_forward_exclusive(&self) -> RBtreeForwardIterator<K, V> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `check_subtree_integrity_unordered` and `check_integrity_unordered` are never used
[INFO] [stdout]   --> src/rbtree/check.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl<K, V> RBtree<K, V> {
[INFO] [stdout]    | ----------------------- methods in this implementation
[INFO] [stdout] 46 |     pub fn check_subtree_integrity_unordered(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn check_integrity_unordered(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `check_belonging` is never used
[INFO] [stdout]   --> src/rbtree/check.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 83 | impl<K, V> RBtree<K, V> {
[INFO] [stdout]    | ----------------------- method in this implementation
[INFO] [stdout] 84 |     pub fn check_belonging(&self, mut node: *const RBtreeNode<K, V>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "5dfcc415630d54d5bb937888c5cec5b5c3a610f33a08658c45129629c340554e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dfcc415630d54d5bb937888c5cec5b5c3a610f33a08658c45129629c340554e", kill_on_drop: false }`
[INFO] [stdout] 5dfcc415630d54d5bb937888c5cec5b5c3a610f33a08658c45129629c340554e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 470d9032ea39755a7543bc99c111dbd3fffe6eb2908df53b69d472a3b0f1c8f1
[INFO] running `Command { std: "docker" "start" "-a" "470d9032ea39755a7543bc99c111dbd3fffe6eb2908df53b69d472a3b0f1c8f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling clap_lex v0.7.5
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling anstyle v1.0.13
[INFO] [stderr]    Compiling plotters-backend v0.3.7
[INFO] [stderr]    Compiling home v0.5.11
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling ciborium-io v0.2.2
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stderr]    Compiling afl v0.16.0
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling clap_builder v4.5.48
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling oorandom v11.1.5
[INFO] [stderr]    Compiling xdg v3.0.0
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stdout] warning: method `iter_forward_exclusive` is never used
[INFO] [stdout]   --> src/rbtree/mod.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl<K, V> RBtreeNode<K, V> {
[INFO] [stdout]    | --------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 73 |     pub fn iter_forward_exclusive(&self) -> RBtreeForwardIterator<K, V> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `check_subtree_integrity_unordered` and `check_integrity_unordered` are never used
[INFO] [stdout]   --> src/rbtree/check.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl<K, V> RBtree<K, V> {
[INFO] [stdout]    | ----------------------- methods in this implementation
[INFO] [stdout] 46 |     pub fn check_subtree_integrity_unordered(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn check_integrity_unordered(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `check_belonging` is never used
[INFO] [stdout]   --> src/rbtree/check.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 83 | impl<K, V> RBtree<K, V> {
[INFO] [stdout]    | ----------------------- method in this implementation
[INFO] [stdout] 84 |     pub fn check_belonging(&self, mut node: *const RBtreeNode<K, V>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling criterion-plot v0.6.0
[INFO] [stderr]    Compiling clap v4.5.48
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling zerocopy-derive v0.8.27
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling half v2.7.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling criterion v0.7.0
[INFO] [stderr]    Compiling sparsela v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `iter_forward_exclusive` is never used
[INFO] [stdout]   --> src/rbtree/mod.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl<K, V> RBtreeNode<K, V> {
[INFO] [stdout]    | --------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 73 |     pub fn iter_forward_exclusive(&self) -> RBtreeForwardIterator<K, V> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `check_subtree_integrity_unordered` and `check_integrity_unordered` are never used
[INFO] [stdout]   --> src/rbtree/check.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl<K, V> RBtree<K, V> {
[INFO] [stdout]    | ----------------------- methods in this implementation
[INFO] [stdout] 46 |     pub fn check_subtree_integrity_unordered(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn check_integrity_unordered(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `check_belonging` is never used
[INFO] [stdout]   --> src/rbtree/check.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 83 | impl<K, V> RBtree<K, V> {
[INFO] [stdout]    | ----------------------- method in this implementation
[INFO] [stdout] 84 |     pub fn check_belonging(&self, mut node: *const RBtreeNode<K, V>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note:  "cc" "-m64" "/opt/rustwide/target/debug/examples/rustcYGz8jU/symbols.o" "<5 object files omitted>" "-Wl,--as-needed" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/{libsparsela-530bb6223bd37a31,librand-b5a97cfa7723fd1f,librand_chacha-225e6de4badf36be,libppv_lite86-bc1ec5aaa27fe99e,libzerocopy-dde8e55123281b6a,librand_core-f386352b11bc98bc,libgetrandom-a6c229c6c4b04d93,liblibc-86fca9c761e09338,libcfg_if-64b1dcae456935ce,libapprox-ac8f77fb0997bfd6,libnum_traits-e658f8325bd83daf,libafl-87e88ed38810d385}.rlib" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libstd-*,libpanic_unwind-*,libobject-*,libmemchr-*,libaddr2line-*,libgimli-*,libcfg_if-*,librustc_demangle-*,libstd_detect-*,libhashbrown-*,librustc_std_workspace_alloc-*,libminiz_oxide-*,libadler2-*,libunwind-*,liblibc-*,librustc_std_workspace_core-*,liballoc-*,libcore-*,libcompiler_builtins-*}.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-L" "/opt/rustwide/target/debug/examples/rustcYGz8jU/raw-dylibs" "-B<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/examples/fuzz_gauss-308ff783432d16b1" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
[INFO] [stdout]   = note: some arguments are omitted. use `--verbose` to show all linker arguments
[INFO] [stdout]   = note: rust-lld: error: undefined symbol: __afl_manual_init
[INFO] [stdout]           >>> referenced by lib.rs:281 (/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/afl-0.16.0/src/lib.rs:281)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/examples/fuzz_gauss-308ff783432d16b1.fuzz_gauss.dedccc04e2351c38-cgu.1.rcgu.o:(afl::fuzz::h4c2fcac9650275f5)
[INFO] [stdout]           
[INFO] [stdout]           rust-lld: error: undefined symbol: __afl_persistent_loop
[INFO] [stdout]           >>> referenced by lib.rs:283 (/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/afl-0.16.0/src/lib.rs:283)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/examples/fuzz_gauss-308ff783432d16b1.fuzz_gauss.dedccc04e2351c38-cgu.1.rcgu.o:(afl::fuzz::h4c2fcac9650275f5)
[INFO] [stdout]           
[INFO] [stdout]           rust-lld: error: undefined symbol: __afl_fuzz_ptr
[INFO] [stdout]           >>> referenced by lib.rs:285 (/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/afl-0.16.0/src/lib.rs:285)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/examples/fuzz_gauss-308ff783432d16b1.fuzz_gauss.dedccc04e2351c38-cgu.1.rcgu.o:(afl::fuzz::h4c2fcac9650275f5)
[INFO] [stdout]           >>> referenced by lib.rs:285 (/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/afl-0.16.0/src/lib.rs:285)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/examples/fuzz_gauss-308ff783432d16b1.fuzz_gauss.dedccc04e2351c38-cgu.1.rcgu.o:(afl::fuzz::h4c2fcac9650275f5)
[INFO] [stdout]           >>> referenced by lib.rs:297 (/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/afl-0.16.0/src/lib.rs:297)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/examples/fuzz_gauss-308ff783432d16b1.fuzz_gauss.dedccc04e2351c38-cgu.1.rcgu.o:(afl::fuzz::h4c2fcac9650275f5)
[INFO] [stdout]           >>> referenced 1 more times
[INFO] [stdout]           
[INFO] [stdout]           rust-lld: error: undefined symbol: __afl_fuzz_len
[INFO] [stdout]           >>> referenced by lib.rs:296 (/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/afl-0.16.0/src/lib.rs:296)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/examples/fuzz_gauss-308ff783432d16b1.fuzz_gauss.dedccc04e2351c38-cgu.1.rcgu.o:(afl::fuzz::h4c2fcac9650275f5)
[INFO] [stdout]           >>> referenced by lib.rs:296 (/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/afl-0.16.0/src/lib.rs:296)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/examples/fuzz_gauss-308ff783432d16b1.fuzz_gauss.dedccc04e2351c38-cgu.1.rcgu.o:(afl::fuzz::h4c2fcac9650275f5)
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sparsela` (example "fuzz_gauss") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "470d9032ea39755a7543bc99c111dbd3fffe6eb2908df53b69d472a3b0f1c8f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "470d9032ea39755a7543bc99c111dbd3fffe6eb2908df53b69d472a3b0f1c8f1", kill_on_drop: false }`
[INFO] [stdout] 470d9032ea39755a7543bc99c111dbd3fffe6eb2908df53b69d472a3b0f1c8f1
