[INFO] fetching crate boolector-sys 0.6.3...
[INFO] checking boolector-sys-0.6.3 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate boolector-sys 0.6.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate boolector-sys 0.6.3 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate boolector-sys 0.6.3
[INFO] finished tweaking crates.io crate boolector-sys 0.6.3
[INFO] tweaked toml for crates.io crate boolector-sys 0.6.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 913f2ac522377c5f08af5333be252e5bb78a0bf8023c33a49ffe2a5d43224d23
[INFO] running `Command { std: "docker" "start" "-a" "913f2ac522377c5f08af5333be252e5bb78a0bf8023c33a49ffe2a5d43224d23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "913f2ac522377c5f08af5333be252e5bb78a0bf8023c33a49ffe2a5d43224d23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "913f2ac522377c5f08af5333be252e5bb78a0bf8023c33a49ffe2a5d43224d23", kill_on_drop: false }`
[INFO] [stdout] 913f2ac522377c5f08af5333be252e5bb78a0bf8023c33a49ffe2a5d43224d23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d68a23e24ddf7cb86ff8df8035eb07c888b517a84a9aaed0aca7f8ee2c0961c7
[INFO] running `Command { std: "docker" "start" "-a" "d68a23e24ddf7cb86ff8df8035eb07c888b517a84a9aaed0aca7f8ee2c0961c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling boolector-sys v0.6.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]   --> src/../src-generated/bindings.rs:49:19
[INFO] [stdout]    |
[INFO] [stdout] 49 |         unsafe { &(*(::std::ptr::null::<BtorAbortCallback>())).abort_fun as *const _ as usize },
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deref_nullptr)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]   --> src/../src-generated/bindings.rs:59:19
[INFO] [stdout]    |
[INFO] [stdout] 59 |         unsafe { &(*(::std::ptr::null::<BtorAbortCallback>())).cb_fun as *const _ as usize },
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.24s
[INFO] running `Command { std: "docker" "inspect" "d68a23e24ddf7cb86ff8df8035eb07c888b517a84a9aaed0aca7f8ee2c0961c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d68a23e24ddf7cb86ff8df8035eb07c888b517a84a9aaed0aca7f8ee2c0961c7", kill_on_drop: false }`
[INFO] [stdout] d68a23e24ddf7cb86ff8df8035eb07c888b517a84a9aaed0aca7f8ee2c0961c7