[INFO] crate gmp-sys 0.1.0 is already in cache
[INFO] checking gmp-sys-0.1.0 against master#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037
[INFO] extracting crate gmp-sys 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate gmp-sys 0.1.0 on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate gmp-sys 0.1.0
[INFO] finished tweaking crates.io crate gmp-sys 0.1.0
[INFO] tweaked toml for crates.io crate gmp-sys 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 646ad22dd6c33977e433d35fc702958a8be9d08012d1acf1f51b4330826323ab
[INFO] running `"docker" "start" "-a" "646ad22dd6c33977e433d35fc702958a8be9d08012d1acf1f51b4330826323ab"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling gmp-sys v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: `extern` block uses type `[Struct_Unnamed3; 1]`, which is not FFI-safe
[INFO] [stderr]    --> src/lib.rs:597:34
[INFO] [stderr]     |
[INFO] [stderr] 597 |     pub fn __gmpf_urandomb(arg1: mpf_t, arg2: gmp_randstate_ptr,
[INFO] [stderr]     |                                  ^^^^^ not FFI-safe
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stderr]     = help: consider passing a pointer to the array
[INFO] [stderr]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stderr] 
[INFO] [stderr] error: renaming of the library `gmp` was specified, however this crate contains no `#[link(...)]` attributes referencing this library.
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `[Struct_Unnamed3; 1]`, which is not FFI-safe
[INFO] [stderr]    --> src/lib.rs:597:34
[INFO] [stderr]     |
[INFO] [stderr] 597 |     pub fn __gmpf_urandomb(arg1: mpf_t, arg2: gmp_randstate_ptr,
[INFO] [stderr]     |                                  ^^^^^ not FFI-safe
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stderr]     = help: consider passing a pointer to the array
[INFO] [stderr]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stderr] 
[INFO] [stderr] error: renaming of the library `gmp` was specified, however this crate contains no `#[link(...)]` attributes referencing this library.
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `gmp-sys`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `gmp-sys`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "646ad22dd6c33977e433d35fc702958a8be9d08012d1acf1f51b4330826323ab"`
[INFO] running `"docker" "rm" "-f" "646ad22dd6c33977e433d35fc702958a8be9d08012d1acf1f51b4330826323ab"`
[INFO] [stdout] 646ad22dd6c33977e433d35fc702958a8be9d08012d1acf1f51b4330826323ab