[INFO] cloning repository https://github.com/gitee2github/libgdbm-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gitee2github/libgdbm-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgitee2github%2Flibgdbm-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgitee2github%2Flibgdbm-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0932f9f612b19879062818a165b73879188fed15
[INFO] checking gitee2github/libgdbm-rust against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgitee2github%2Flibgdbm-rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/gitee2github/libgdbm-rust
[INFO] finished tweaking git repo https://github.com/gitee2github/libgdbm-rust
[INFO] tweaked toml for git repo https://github.com/gitee2github/libgdbm-rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gitee2github/libgdbm-rust on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gitee2github/libgdbm-rust 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded c2rust-bitfields-derive v0.2.1
[INFO] [stderr]   Downloaded c2rust-asm-casts v0.2.0
[INFO] [stderr]   Downloaded dunce v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6b6f92de7faebe1f61fd825778cbd58f2d4c2b2aa11afd490e81ea256696623
[INFO] running `Command { std: "docker" "start" "-a" "e6b6f92de7faebe1f61fd825778cbd58f2d4c2b2aa11afd490e81ea256696623", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6b6f92de7faebe1f61fd825778cbd58f2d4c2b2aa11afd490e81ea256696623", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6b6f92de7faebe1f61fd825778cbd58f2d4c2b2aa11afd490e81ea256696623", kill_on_drop: false }`
[INFO] [stdout] e6b6f92de7faebe1f61fd825778cbd58f2d4c2b2aa11afd490e81ea256696623
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fe8eeb997fd8563f6f086f49fda096fddd97794b2c21fc4b7f5b4b07b34c6c2
[INFO] running `Command { std: "docker" "start" "-a" "4fe8eeb997fd8563f6f086f49fda096fddd97794b2c21fc4b7f5b4b07b34c6c2", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]     Checking dunce v0.1.1
[INFO] [stderr]     Checking cc v1.0.78
[INFO] [stderr]     Checking c2rust-asm-casts v0.2.0
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling c2rust-bitfields-derive v0.2.1
[INFO] [stderr]     Checking c2rust-bitfields v0.3.0
[INFO] [stderr]     Checking gdbm-for-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub extern fn double_input(input: i32) -> i32 {
[INFO] [stdout]    |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub extern fn add(input: i32) -> i32 {
[INFO] [stdout]    |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]    --> src/lib.rs:508:1
[INFO] [stdout]     |
[INFO] [stdout] 508 | #[macro_use]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub extern fn double_input(input: i32) -> i32 {
[INFO] [stdout]    |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub extern fn add(input: i32) -> i32 {
[INFO] [stdout]    |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]    --> src/lib.rs:508:1
[INFO] [stdout]     |
[INFO] [stdout] 508 | #[macro_use]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]     --> src/lib.rs:1888:28
[INFO] [stdout]      |
[INFO] [stdout] 1888 |                     "bswap {0}", inlateout(reg)
[INFO] [stdout]      |                            ^^^
[INFO] [stdout] 1889 |                     c2rust_asm_casts::AsmCast::cast_in(fresh0, fresh2) => fresh1,
[INFO] [stdout]      |                     -------------------------------------------------- for this argument
[INFO] [stdout]      |
[INFO] [stdout]      = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]      = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout]      = note: `#[warn(asm_sub_register)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]     --> src/lib.rs:1943:40
[INFO] [stdout]      |
[INFO] [stdout] 1943 | ...                   "bswap {0}", inlateout(reg)
[INFO] [stdout]      |                              ^^^
[INFO] [stdout] 1944 | ...                   c2rust_asm_casts::AsmCast::cast_in(fresh3, fresh5) =>
[INFO] [stdout]      |                       -------------------------------------------------- for this argument
[INFO] [stdout]      |
[INFO] [stdout]      = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]      = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]     --> src/lib.rs:2107:44
[INFO] [stdout]      |
[INFO] [stdout] 2107 | ...                   "bswap {0}", inlateout(reg)
[INFO] [stdout]      |                              ^^^
[INFO] [stdout] 2108 | ...                   c2rust_asm_casts::AsmCast::cast_in(fresh0, fresh2) =>
[INFO] [stdout]      |                       -------------------------------------------------- for this argument
[INFO] [stdout]      |
[INFO] [stdout]      = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]      = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]     --> src/lib.rs:2152:44
[INFO] [stdout]      |
[INFO] [stdout] 2152 | ...                   "bswap {0}", inlateout(reg)
[INFO] [stdout]      |                              ^^^
[INFO] [stdout] 2153 | ...                   c2rust_asm_casts::AsmCast::cast_in(fresh3, fresh5) =>
[INFO] [stdout]      |                       -------------------------------------------------- for this argument
[INFO] [stdout]      |
[INFO] [stdout]      = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]      = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]     --> src/lib.rs:1888:28
[INFO] [stdout]      |
[INFO] [stdout] 1888 |                     "bswap {0}", inlateout(reg)
[INFO] [stdout]      |                            ^^^
[INFO] [stdout] 1889 |                     c2rust_asm_casts::AsmCast::cast_in(fresh0, fresh2) => fresh1,
[INFO] [stdout]      |                     -------------------------------------------------- for this argument
[INFO] [stdout]      |
[INFO] [stdout]      = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]      = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout]      = note: `#[warn(asm_sub_register)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]     --> src/lib.rs:1943:40
[INFO] [stdout]      |
[INFO] [stdout] 1943 | ...                   "bswap {0}", inlateout(reg)
[INFO] [stdout]      |                              ^^^
[INFO] [stdout] 1944 | ...                   c2rust_asm_casts::AsmCast::cast_in(fresh3, fresh5) =>
[INFO] [stdout]      |                       -------------------------------------------------- for this argument
[INFO] [stdout]      |
[INFO] [stdout]      = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]      = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]     --> src/lib.rs:2107:44
[INFO] [stdout]      |
[INFO] [stdout] 2107 | ...                   "bswap {0}", inlateout(reg)
[INFO] [stdout]      |                              ^^^
[INFO] [stdout] 2108 | ...                   c2rust_asm_casts::AsmCast::cast_in(fresh0, fresh2) =>
[INFO] [stdout]      |                       -------------------------------------------------- for this argument
[INFO] [stdout]      |
[INFO] [stdout]      = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]      = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]     --> src/lib.rs:2152:44
[INFO] [stdout]      |
[INFO] [stdout] 2152 | ...                   "bswap {0}", inlateout(reg)
[INFO] [stdout]      |                              ^^^
[INFO] [stdout] 2153 | ...                   c2rust_asm_casts::AsmCast::cast_in(fresh3, fresh5) =>
[INFO] [stdout]      |                       -------------------------------------------------- for this argument
[INFO] [stdout]      |
[INFO] [stdout]      = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]      = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]     --> src/lib.rs:5781:55
[INFO] [stdout]      |
[INFO] [stdout] 5781 | static mut setopt_handler_tab: [setopt_handler; 22] = unsafe {
[INFO] [stdout]      |                                                       ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]     --> src/lib.rs:5781:55
[INFO] [stdout]      |
[INFO] [stdout] 5781 | static mut setopt_handler_tab: [setopt_handler; 22] = unsafe {
[INFO] [stdout]      |                                                       ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static
[INFO] [stdout]    --> src/lib.rs:796:12
[INFO] [stdout]     |
[INFO] [stdout] 796 |     return &mut gdbm_errno_storage;
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]     = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] help: use `&raw mut` instead to create a raw pointer
[INFO] [stdout]     |
[INFO] [stdout] 796 |     return &raw mut gdbm_errno_storage;
[INFO] [stdout]     |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]    --> src/lib.rs:809:13
[INFO] [stdout]     |
[INFO] [stdout] 809 |         if *gdbm_syserr.as_ptr().offset(ec as isize) != 0 {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused unary operation that must be used
[INFO] [stdout]     --> src/lib.rs:1523:9
[INFO] [stdout]      |
[INFO] [stdout] 1523 |         !(return_val.dptr).is_null();
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the unary operation produces a value
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1523 |         let _ = !(return_val.dptr).is_null();
[INFO] [stdout]      |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused unary operation that must be used
[INFO] [stdout]     --> src/lib.rs:1554:5
[INFO] [stdout]      |
[INFO] [stdout] 1554 |     !(return_val.dptr).is_null();
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the unary operation produces a value
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1554 |     let _ = !(return_val.dptr).is_null();
[INFO] [stdout]      |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static
[INFO] [stdout]     --> src/lib.rs:4533:43
[INFO] [stdout]      |
[INFO] [stdout] 4533 |     let mut p: *mut libc::c_char = strchr(xdig.as_mut_ptr(), c);
[INFO] [stdout]      |                                           ^^^^^^^^^^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]      |
[INFO] [stdout]      = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static
[INFO] [stdout]     --> src/lib.rs:4537:26
[INFO] [stdout]      |
[INFO] [stdout] 4537 |     return p.offset_from(xdig.as_mut_ptr()) as libc::c_long as libc::c_int;
[INFO] [stdout]      |                          ^^^^^^^^^^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]      |
[INFO] [stdout]      = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static
[INFO] [stdout]    --> src/lib.rs:796:12
[INFO] [stdout]     |
[INFO] [stdout] 796 |     return &mut gdbm_errno_storage;
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]     = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] help: use `&raw mut` instead to create a raw pointer
[INFO] [stdout]     |
[INFO] [stdout] 796 |     return &raw mut gdbm_errno_storage;
[INFO] [stdout]     |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]    --> src/lib.rs:809:13
[INFO] [stdout]     |
[INFO] [stdout] 809 |         if *gdbm_syserr.as_ptr().offset(ec as isize) != 0 {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused unary operation that must be used
[INFO] [stdout]     --> src/lib.rs:1523:9
[INFO] [stdout]      |
[INFO] [stdout] 1523 |         !(return_val.dptr).is_null();
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the unary operation produces a value
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1523 |         let _ = !(return_val.dptr).is_null();
[INFO] [stdout]      |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused unary operation that must be used
[INFO] [stdout]     --> src/lib.rs:1554:5
[INFO] [stdout]      |
[INFO] [stdout] 1554 |     !(return_val.dptr).is_null();
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the unary operation produces a value
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1554 |     let _ = !(return_val.dptr).is_null();
[INFO] [stdout]      |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static
[INFO] [stdout]     --> src/lib.rs:4533:43
[INFO] [stdout]      |
[INFO] [stdout] 4533 |     let mut p: *mut libc::c_char = strchr(xdig.as_mut_ptr(), c);
[INFO] [stdout]      |                                           ^^^^^^^^^^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]      |
[INFO] [stdout]      = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static
[INFO] [stdout]     --> src/lib.rs:4537:26
[INFO] [stdout]      |
[INFO] [stdout] 4537 |     return p.offset_from(xdig.as_mut_ptr()) as libc::c_long as libc::c_int;
[INFO] [stdout]      |                          ^^^^^^^^^^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]      |
[INFO] [stdout]      = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.85s
[INFO] running `Command { std: "docker" "inspect" "4fe8eeb997fd8563f6f086f49fda096fddd97794b2c21fc4b7f5b4b07b34c6c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fe8eeb997fd8563f6f086f49fda096fddd97794b2c21fc4b7f5b4b07b34c6c2", kill_on_drop: false }`
[INFO] [stdout] 4fe8eeb997fd8563f6f086f49fda096fddd97794b2c21fc4b7f5b4b07b34c6c2
