[INFO] cloning repository https://github.com/joachimff/eBPF-fuzzer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/joachimff/eBPF-fuzzer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoachimff%2FeBPF-fuzzer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoachimff%2FeBPF-fuzzer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 70704528debc80bbd820fd1c16b470fe30dc3a28
[INFO] testing joachimff/eBPF-fuzzer against try#28f95933dc0727396c07b48d0a8cb5211b7fb472 for pr-154065-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoachimff%2FeBPF-fuzzer" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/joachimff/eBPF-fuzzer
[INFO] finished tweaking git repo https://github.com/joachimff/eBPF-fuzzer
[INFO] tweaked toml for git repo https://github.com/joachimff/eBPF-fuzzer written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/joachimff/eBPF-fuzzer on toolchain 28f95933dc0727396c07b48d0a8cb5211b7fb472
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+28f95933dc0727396c07b48d0a8cb5211b7fb472" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/joachimff/eBPF-fuzzer 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" "+28f95933dc0727396c07b48d0a8cb5211b7fb472" "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
[ERROR] error running command: no output for 300 seconds
[INFO] testing joachimff/eBPF-fuzzer against try#28f95933dc0727396c07b48d0a8cb5211b7fb472 for pr-154065-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoachimff%2FeBPF-fuzzer" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/joachimff/eBPF-fuzzer
[INFO] finished tweaking git repo https://github.com/joachimff/eBPF-fuzzer
[INFO] tweaked toml for git repo https://github.com/joachimff/eBPF-fuzzer written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/joachimff/eBPF-fuzzer on toolchain 28f95933dc0727396c07b48d0a8cb5211b7fb472
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+28f95933dc0727396c07b48d0a8cb5211b7fb472" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/joachimff/eBPF-fuzzer 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" "+28f95933dc0727396c07b48d0a8cb5211b7fb472" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.139
[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" "+28f95933dc0727396c07b48d0a8cb5211b7fb472" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b4922a26818fcbcd8250eac6a6c667631255b4050baf26c84536ed2671a2364
[INFO] running `Command { std: "docker" "start" "-a" "3b4922a26818fcbcd8250eac6a6c667631255b4050baf26c84536ed2671a2364", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b4922a26818fcbcd8250eac6a6c667631255b4050baf26c84536ed2671a2364", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b4922a26818fcbcd8250eac6a6c667631255b4050baf26c84536ed2671a2364", kill_on_drop: false }`
[INFO] [stdout] 3b4922a26818fcbcd8250eac6a6c667631255b4050baf26c84536ed2671a2364
[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=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" "+28f95933dc0727396c07b48d0a8cb5211b7fb472" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e2a1294bdbf881ae79e10984b22bd20916408216ba79fdb33be116ea82fc411
[INFO] running `Command { std: "docker" "start" "-a" "8e2a1294bdbf881ae79e10984b22bd20916408216ba79fdb33be116ea82fc411", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling j-fuzzer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/main.rs:261:28
[INFO] [stdout]     |
[INFO] [stdout] 261 | type UbpfCreateFn = unsafe extern fn() -> *mut UbpfVm;
[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/main.rs:262:26
[INFO] [stdout]     |
[INFO] [stdout] 262 | type UbpfLoadFn = unsafe extern fn(*mut UbpfVm, *const c_char, u32, *mut *const c_char) -> i32;
[INFO] [stdout]     |                          ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/main.rs:263:29
[INFO] [stdout]     |
[INFO] [stdout] 263 | type UbpfCompileFn = unsafe extern fn(*mut UbpfVm, *mut *const c_char) -> u64;
[INFO] [stdout]     |                             ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/main.rs:264:28
[INFO] [stdout]     |
[INFO] [stdout] 264 | type UbpfDeleteFn = unsafe extern fn(*mut UbpfVm) -> ();
[INFO] [stdout]     |                            ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/main.rs:265:26
[INFO] [stdout]     |
[INFO] [stdout] 265 | type UbpfExecFn = unsafe extern fn(*mut UbpfVm, *mut i8, u32, *mut u64) -> i32;
[INFO] [stdout]     |                          ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `offset` is never read
[INFO] [stdout]    --> src/main.rs:227:22
[INFO] [stdout]     |
[INFO] [stdout] 227 |     let mut offset = 0;
[INFO] [stdout]     |                      ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 232 |       offset = rand::thread_rng().gen_range(0..0xFF_FF);
[INFO] [stdout]     |       ------------------------------------------------- `offset` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `imm` is never read
[INFO] [stdout]    --> src/main.rs:235:19
[INFO] [stdout]     |
[INFO] [stdout] 235 |     let mut imm = 0;
[INFO] [stdout]     |                   ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 241 |       imm = rand::thread_rng().gen::<i32>();
[INFO] [stdout]     |       ------------------------------------- `imm` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/main.rs:358:7
[INFO] [stdout]     |
[INFO] [stdout] 358 |   let start = std::time::Instant::now();
[INFO] [stdout]     |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TOTAL_EXEC` is never used
[INFO] [stdout]    --> src/main.rs:359:9
[INFO] [stdout]     |
[INFO] [stdout] 359 |   const TOTAL_EXEC: i32 = 1_000_000;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this creates a dangling pointer because temporary `MaybeUninit<i8>` is dropped at end of statement
[INFO] [stdout]    --> src/main.rs:317:83
[INFO] [stdout]     |
[INFO] [stdout] 317 |     let mut errmsg_ptr: *const c_char = std::mem::MaybeUninit::<c_char>::uninit().as_mut_ptr();
[INFO] [stdout]     |                                         ----------------------------------------- ^^^^^^^^^^ pointer created here
[INFO] [stdout]     |                                         |
[INFO] [stdout]     |                                         this `MaybeUninit<i8>` is dropped at end of statement
[INFO] [stdout]     |
[INFO] [stdout]     = help: bind the `MaybeUninit<i8>` to a variable such that it outlives the pointer returned by `as_mut_ptr`
[INFO] [stdout]     = note: a dangling pointer is safe, but dereferencing one is undefined behavior
[INFO] [stdout]     = note: returning a pointer to a local variable will always result in a dangling pointer
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stdout]     = note: `#[warn(dangling_pointers_from_temporaries)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this creates a dangling pointer because temporary `MaybeUninit<u64>` is dropped at end of statement
[INFO] [stdout]    --> src/main.rs:329:72
[INFO] [stdout]     |
[INFO] [stdout] 329 |     let ret_val_ptr: *mut u64 = std::mem::MaybeUninit::<u64>::uninit().as_mut_ptr();
[INFO] [stdout]     |                                 -------------------------------------- ^^^^^^^^^^ pointer created here
[INFO] [stdout]     |                                 |
[INFO] [stdout]     |                                 this `MaybeUninit<u64>` is dropped at end of statement
[INFO] [stdout]     |
[INFO] [stdout]     = help: bind the `MaybeUninit<u64>` to a variable such that it outlives the pointer returned by `as_mut_ptr`
[INFO] [stdout]     = note: a dangling pointer is safe, but dereferencing one is undefined behavior
[INFO] [stdout]     = note: returning a pointer to a local variable will always result in a dangling pointer
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "8e2a1294bdbf881ae79e10984b22bd20916408216ba79fdb33be116ea82fc411", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e2a1294bdbf881ae79e10984b22bd20916408216ba79fdb33be116ea82fc411", kill_on_drop: false }`
[INFO] [stdout] 8e2a1294bdbf881ae79e10984b22bd20916408216ba79fdb33be116ea82fc411
[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=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" "+28f95933dc0727396c07b48d0a8cb5211b7fb472" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8c93fb18e03c612160d76cf008593c7a1f11e6f2911c843c9a1bd3d4453e12f
[INFO] running `Command { std: "docker" "start" "-a" "b8c93fb18e03c612160d76cf008593c7a1f11e6f2911c843c9a1bd3d4453e12f", kill_on_drop: false }`
[INFO] [stderr]    Compiling j-fuzzer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/main.rs:261:28
[INFO] [stdout]     |
[INFO] [stdout] 261 | type UbpfCreateFn = unsafe extern fn() -> *mut UbpfVm;
[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/main.rs:262:26
[INFO] [stdout]     |
[INFO] [stdout] 262 | type UbpfLoadFn = unsafe extern fn(*mut UbpfVm, *const c_char, u32, *mut *const c_char) -> i32;
[INFO] [stdout]     |                          ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/main.rs:263:29
[INFO] [stdout]     |
[INFO] [stdout] 263 | type UbpfCompileFn = unsafe extern fn(*mut UbpfVm, *mut *const c_char) -> u64;
[INFO] [stdout]     |                             ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/main.rs:264:28
[INFO] [stdout]     |
[INFO] [stdout] 264 | type UbpfDeleteFn = unsafe extern fn(*mut UbpfVm) -> ();
[INFO] [stdout]     |                            ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/main.rs:265:26
[INFO] [stdout]     |
[INFO] [stdout] 265 | type UbpfExecFn = unsafe extern fn(*mut UbpfVm, *mut i8, u32, *mut u64) -> i32;
[INFO] [stdout]     |                          ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `offset` is never read
[INFO] [stdout]    --> src/main.rs:227:22
[INFO] [stdout]     |
[INFO] [stdout] 227 |     let mut offset = 0;
[INFO] [stdout]     |                      ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 232 |       offset = rand::thread_rng().gen_range(0..0xFF_FF);
[INFO] [stdout]     |       ------------------------------------------------- `offset` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `imm` is never read
[INFO] [stdout]    --> src/main.rs:235:19
[INFO] [stdout]     |
[INFO] [stdout] 235 |     let mut imm = 0;
[INFO] [stdout]     |                   ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 241 |       imm = rand::thread_rng().gen::<i32>();
[INFO] [stdout]     |       ------------------------------------- `imm` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/main.rs:358:7
[INFO] [stdout]     |
[INFO] [stdout] 358 |   let start = std::time::Instant::now();
[INFO] [stdout]     |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this creates a dangling pointer because temporary `MaybeUninit<i8>` is dropped at end of statement
[INFO] [stdout]    --> src/main.rs:317:83
[INFO] [stdout]     |
[INFO] [stdout] 317 |     let mut errmsg_ptr: *const c_char = std::mem::MaybeUninit::<c_char>::uninit().as_mut_ptr();
[INFO] [stdout]     |                                         ----------------------------------------- ^^^^^^^^^^ pointer created here
[INFO] [stdout]     |                                         |
[INFO] [stdout]     |                                         this `MaybeUninit<i8>` is dropped at end of statement
[INFO] [stdout]     |
[INFO] [stdout]     = help: bind the `MaybeUninit<i8>` to a variable such that it outlives the pointer returned by `as_mut_ptr`
[INFO] [stdout]     = note: a dangling pointer is safe, but dereferencing one is undefined behavior
[INFO] [stdout]     = note: returning a pointer to a local variable will always result in a dangling pointer
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stdout]     = note: `#[warn(dangling_pointers_from_temporaries)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this creates a dangling pointer because temporary `MaybeUninit<u64>` is dropped at end of statement
[INFO] [stdout]    --> src/main.rs:329:72
[INFO] [stdout]     |
[INFO] [stdout] 329 |     let ret_val_ptr: *mut u64 = std::mem::MaybeUninit::<u64>::uninit().as_mut_ptr();
[INFO] [stdout]     |                                 -------------------------------------- ^^^^^^^^^^ pointer created here
[INFO] [stdout]     |                                 |
[INFO] [stdout]     |                                 this `MaybeUninit<u64>` is dropped at end of statement
[INFO] [stdout]     |
[INFO] [stdout]     = help: bind the `MaybeUninit<u64>` to a variable such that it outlives the pointer returned by `as_mut_ptr`
[INFO] [stdout]     = note: a dangling pointer is safe, but dereferencing one is undefined behavior
[INFO] [stdout]     = note: returning a pointer to a local variable will always result in a dangling pointer
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "b8c93fb18e03c612160d76cf008593c7a1f11e6f2911c843c9a1bd3d4453e12f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8c93fb18e03c612160d76cf008593c7a1f11e6f2911c843c9a1bd3d4453e12f", kill_on_drop: false }`
[INFO] [stdout] b8c93fb18e03c612160d76cf008593c7a1f11e6f2911c843c9a1bd3d4453e12f
[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=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" "+28f95933dc0727396c07b48d0a8cb5211b7fb472" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 88167c10aee3803cb01bd8520b550e6fd5b1585b62c986d3819234aaf7b4c893
[INFO] running `Command { std: "docker" "start" "-a" "88167c10aee3803cb01bd8520b550e6fd5b1585b62c986d3819234aaf7b4c893", kill_on_drop: false }`
[INFO] [stderr] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stderr]    --> src/main.rs:261:28
[INFO] [stderr]     |
[INFO] [stderr] 261 | type UbpfCreateFn = unsafe extern fn() -> *mut UbpfVm;
[INFO] [stderr]     |                            ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(missing_abi)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stderr]    --> src/main.rs:262:26
[INFO] [stderr]     |
[INFO] [stderr] 262 | type UbpfLoadFn = unsafe extern fn(*mut UbpfVm, *const c_char, u32, *mut *const c_char) -> i32;
[INFO] [stderr]     |                          ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stderr]    --> src/main.rs:263:29
[INFO] [stderr]     |
[INFO] [stderr] 263 | type UbpfCompileFn = unsafe extern fn(*mut UbpfVm, *mut *const c_char) -> u64;
[INFO] [stderr]     |                             ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stderr]    --> src/main.rs:264:28
[INFO] [stderr]     |
[INFO] [stderr] 264 | type UbpfDeleteFn = unsafe extern fn(*mut UbpfVm) -> ();
[INFO] [stderr]     |                            ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stderr]    --> src/main.rs:265:26
[INFO] [stderr]     |
[INFO] [stderr] 265 | type UbpfExecFn = unsafe extern fn(*mut UbpfVm, *mut i8, u32, *mut u64) -> i32;
[INFO] [stderr]     |                          ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `offset` is never read
[INFO] [stderr]    --> src/main.rs:227:22
[INFO] [stderr]     |
[INFO] [stderr] 227 |     let mut offset = 0;
[INFO] [stderr]     |                      ^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 232 |       offset = rand::thread_rng().gen_range(0..0xFF_FF);
[INFO] [stderr]     |       ------------------------------------------------- `offset` is overwritten here before the previous value is read
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `imm` is never read
[INFO] [stderr]    --> src/main.rs:235:19
[INFO] [stderr]     |
[INFO] [stderr] 235 |     let mut imm = 0;
[INFO] [stderr]     |                   ^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 241 |       imm = rand::thread_rng().gen::<i32>();
[INFO] [stderr]     |       ------------------------------------- `imm` is overwritten here before the previous value is read
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `start`
[INFO] [stderr]    --> src/main.rs:358:7
[INFO] [stderr]     |
[INFO] [stderr] 358 |   let start = std::time::Instant::now();
[INFO] [stderr]     |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this creates a dangling pointer because temporary `MaybeUninit<i8>` is dropped at end of statement
[INFO] [stderr]    --> src/main.rs:317:83
[INFO] [stderr]     |
[INFO] [stderr] 317 |     let mut errmsg_ptr: *const c_char = std::mem::MaybeUninit::<c_char>::uninit().as_mut_ptr();
[INFO] [stderr]     |                                         ----------------------------------------- ^^^^^^^^^^ pointer created here
[INFO] [stderr]     |                                         |
[INFO] [stderr]     |                                         this `MaybeUninit<i8>` is dropped at end of statement
[INFO] [stderr]     |
[INFO] [stderr]     = help: bind the `MaybeUninit<i8>` to a variable such that it outlives the pointer returned by `as_mut_ptr`
[INFO] [stderr]     = note: a dangling pointer is safe, but dereferencing one is undefined behavior
[INFO] [stderr]     = note: returning a pointer to a local variable will always result in a dangling pointer
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stderr]     = note: `#[warn(dangling_pointers_from_temporaries)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this creates a dangling pointer because temporary `MaybeUninit<u64>` is dropped at end of statement
[INFO] [stderr]    --> src/main.rs:329:72
[INFO] [stderr]     |
[INFO] [stderr] 329 |     let ret_val_ptr: *mut u64 = std::mem::MaybeUninit::<u64>::uninit().as_mut_ptr();
[INFO] [stderr]     |                                 -------------------------------------- ^^^^^^^^^^ pointer created here
[INFO] [stderr]     |                                 |
[INFO] [stderr]     |                                 this `MaybeUninit<u64>` is dropped at end of statement
[INFO] [stderr]     |
[INFO] [stderr]     = help: bind the `MaybeUninit<u64>` to a variable such that it outlives the pointer returned by `as_mut_ptr`
[INFO] [stderr]     = note: a dangling pointer is safe, but dereferencing one is undefined behavior
[INFO] [stderr]     = note: returning a pointer to a local variable will always result in a dangling pointer
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `j-fuzzer` (bin "j-fuzzer" test) generated 10 warnings (run `cargo fix --bin "j-fuzzer" -p j-fuzzer --tests` to apply 6 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/j_fuzzer-a178153811fd29c4)
[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" "88167c10aee3803cb01bd8520b550e6fd5b1585b62c986d3819234aaf7b4c893", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88167c10aee3803cb01bd8520b550e6fd5b1585b62c986d3819234aaf7b4c893", kill_on_drop: false }`
[INFO] [stdout] 88167c10aee3803cb01bd8520b550e6fd5b1585b62c986d3819234aaf7b4c893
