[INFO] fetching crate os-memlock 0.2.0...
[INFO] testing os-memlock-0.2.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate os-memlock 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate os-memlock 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate os-memlock 0.2.0
[INFO] tweaked toml for crates.io crate os-memlock 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate os-memlock 0.2.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate os-memlock 0.2.0 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-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e23b193400c5a650d6413b577824a2f402a22da826039b88ac4ee27cb2f4f18
[INFO] running `Command { std: "docker" "start" "-a" "0e23b193400c5a650d6413b577824a2f402a22da826039b88ac4ee27cb2f4f18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e23b193400c5a650d6413b577824a2f402a22da826039b88ac4ee27cb2f4f18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e23b193400c5a650d6413b577824a2f402a22da826039b88ac4ee27cb2f4f18", kill_on_drop: false }`
[INFO] [stdout] 0e23b193400c5a650d6413b577824a2f402a22da826039b88ac4ee27cb2f4f18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6222ef2795cb538a31e529f6a6f6c041b22ffb99a3fe63bdfa1898c191d750e
[INFO] running `Command { std: "docker" "start" "-a" "c6222ef2795cb538a31e529f6a6f6c041b22ffb99a3fe63bdfa1898c191d750e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling os-memlock v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning[E0133]: call to unsafe function `libc::madvise` is unsafe and requires unsafe block
[INFO] [stdout]    --> src/lib.rs:111:18
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let rc = libc::madvise(addr, len, libc::MADV_DONTDUMP);
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
[INFO] [stdout]     = note: consult the function's documentation for information on how to avoid undefined behavior
[INFO] [stdout] note: an unsafe function restricts its caller, but its body is safe by default
[INFO] [stdout]    --> src/lib.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub unsafe fn madvise_dontdump(addr: *mut c_void, len: usize) -> io::Result<()> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(unsafe_op_in_unsafe_fn)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a function
[INFO] [stdout]    --> src/lib.rs:282:1
[INFO] [stdout]     |
[INFO] [stdout] 282 | pub fn disable_core_dumps_with_guard() -> io::Result<CoreDumpsDisabledGuard> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:4:9
[INFO] [stdout]     |
[INFO] [stdout]   4 | #![warn(missing_docs)]
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0133`.
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.98s
[INFO] running `Command { std: "docker" "inspect" "c6222ef2795cb538a31e529f6a6f6c041b22ffb99a3fe63bdfa1898c191d750e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6222ef2795cb538a31e529f6a6f6c041b22ffb99a3fe63bdfa1898c191d750e", kill_on_drop: false }`
[INFO] [stdout] c6222ef2795cb538a31e529f6a6f6c041b22ffb99a3fe63bdfa1898c191d750e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93c964a0dfd9470733a5e75d59221ed1ade97f22439223fc2119caf65356b439
[INFO] running `Command { std: "docker" "start" "-a" "93c964a0dfd9470733a5e75d59221ed1ade97f22439223fc2119caf65356b439", kill_on_drop: false }`
[INFO] [stderr]    Compiling os-memlock v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning[E0133]: call to unsafe function `libc::madvise` is unsafe and requires unsafe block
[INFO] [stdout]    --> src/lib.rs:111:18
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let rc = libc::madvise(addr, len, libc::MADV_DONTDUMP);
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
[INFO] [stdout]     = note: consult the function's documentation for information on how to avoid undefined behavior
[INFO] [stdout] note: an unsafe function restricts its caller, but its body is safe by default
[INFO] [stdout]    --> src/lib.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub unsafe fn madvise_dontdump(addr: *mut c_void, len: usize) -> io::Result<()> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(unsafe_op_in_unsafe_fn)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a function
[INFO] [stdout]    --> src/lib.rs:282:1
[INFO] [stdout]     |
[INFO] [stdout] 282 | pub fn disable_core_dumps_with_guard() -> io::Result<CoreDumpsDisabledGuard> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:4:9
[INFO] [stdout]     |
[INFO] [stdout]   4 | #![warn(missing_docs)]
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0133`.
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `buf` as mutable, as it is not declared as mutable
[INFO] [stdout]   --> examples/locked_vec.rs:46:27
[INFO] [stdout]    |
[INFO] [stdout] 46 |             let mut_ptr = buf.as_mut_ptr() as *mut std::os::raw::c_void;
[INFO] [stdout]    |                           ^^^ cannot borrow as mutable
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing this to be mutable
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let mut buf = vec![0u8; len];
[INFO] [stdout]    |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `os-memlock` (example "locked_vec") due to 1 previous error
[INFO] [stdout] warning[E0133]: call to unsafe function `libc::madvise` is unsafe and requires unsafe block
[INFO] [stdout]    --> src/lib.rs:111:18
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let rc = libc::madvise(addr, len, libc::MADV_DONTDUMP);
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
[INFO] [stdout]     = note: consult the function's documentation for information on how to avoid undefined behavior
[INFO] [stdout] note: an unsafe function restricts its caller, but its body is safe by default
[INFO] [stdout]    --> src/lib.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub unsafe fn madvise_dontdump(addr: *mut c_void, len: usize) -> io::Result<()> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(unsafe_op_in_unsafe_fn)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: missing documentation for a function
[INFO] [stdout]    --> src/lib.rs:282:1
[INFO] [stdout]     |
[INFO] [stdout] 282 | pub fn disable_core_dumps_with_guard() -> io::Result<CoreDumpsDisabledGuard> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:4:9
[INFO] [stdout]     |
[INFO] [stdout]   4 | #![warn(missing_docs)]
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0133`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "93c964a0dfd9470733a5e75d59221ed1ade97f22439223fc2119caf65356b439", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93c964a0dfd9470733a5e75d59221ed1ade97f22439223fc2119caf65356b439", kill_on_drop: false }`
[INFO] [stdout] 93c964a0dfd9470733a5e75d59221ed1ade97f22439223fc2119caf65356b439