[INFO] crate libffi 0.7.0 is already in cache
[INFO] extracting crate libffi 0.7.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/libffi/0.7.0
[INFO] extracting crate libffi 0.7.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/libffi/0.7.0
[INFO] validating manifest of libffi-0.7.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of libffi-0.7.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing libffi-0.7.0
[INFO] finished frobbing libffi-0.7.0
[INFO] frobbed toml for libffi-0.7.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/libffi/0.7.0/Cargo.toml
[INFO] started frobbing libffi-0.7.0
[INFO] finished frobbing libffi-0.7.0
[INFO] frobbed toml for libffi-0.7.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/libffi/0.7.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing libffi-0.7.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/libffi/0.7.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 1bf5ae599e89f75953de65c070be4abf9c3a1b2559dd14f503d9c244c52a98da
[INFO] running `"docker" "start" "-a" "1bf5ae599e89f75953de65c070be4abf9c3a1b2559dd14f503d9c244c52a98da"`
[INFO] [stderr]    Compiling abort_on_panic v2.0.0
[INFO] [stderr]    Compiling libffi-sys v0.7.0
[INFO] [stderr]    Compiling libffi v0.7.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/high/types.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | /// This item is enabled by `#[cfg(feature = "complex")]`.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 113 | #[cfg(feature = "complex")]
[INFO] [stderr] 114 | impl_ffi_type!(c_c32, c32);
[INFO] [stderr]     | --------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/high/types.rs:115:1
[INFO] [stderr]     |
[INFO] [stderr] 115 | /// This item is enabled by `#[cfg(feature = "complex")]`.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 116 | #[cfg(feature = "complex")]
[INFO] [stderr] 117 | impl_ffi_type!(c_c64, c64);
[INFO] [stderr]     | --------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/mod.rs:347:20
[INFO] [stderr]     |
[INFO] [stderr] 347 |     _userdata: Box<Any>,
[INFO] [stderr]     |                    ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/mod.rs:378:56
[INFO] [stderr]     |
[INFO] [stderr] 378 |         let userdata = Box::new(Some(userdata)) as Box<Any>;
[INFO] [stderr]     |                                                        ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.76s
[INFO] running `"docker" "inspect" "1bf5ae599e89f75953de65c070be4abf9c3a1b2559dd14f503d9c244c52a98da"`
[INFO] running `"docker" "rm" "-f" "1bf5ae599e89f75953de65c070be4abf9c3a1b2559dd14f503d9c244c52a98da"`
[INFO] [stdout] 1bf5ae599e89f75953de65c070be4abf9c3a1b2559dd14f503d9c244c52a98da
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/libffi/0.7.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 5d3fa5acfba9e4ac33948aed03b4658a7c01b3ec86cc118afe938b8e16079e64
[INFO] running `"docker" "start" "-a" "5d3fa5acfba9e4ac33948aed03b4658a7c01b3ec86cc118afe938b8e16079e64"`
[INFO] [stderr]    Compiling libffi v0.7.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/high/types.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | /// This item is enabled by `#[cfg(feature = "complex")]`.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 113 | #[cfg(feature = "complex")]
[INFO] [stderr] 114 | impl_ffi_type!(c_c32, c32);
[INFO] [stderr]     | --------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/high/types.rs:115:1
[INFO] [stderr]     |
[INFO] [stderr] 115 | /// This item is enabled by `#[cfg(feature = "complex")]`.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 116 | #[cfg(feature = "complex")]
[INFO] [stderr] 117 | impl_ffi_type!(c_c64, c64);
[INFO] [stderr]     | --------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/mod.rs:347:20
[INFO] [stderr]     |
[INFO] [stderr] 347 |     _userdata: Box<Any>,
[INFO] [stderr]     |                    ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/mod.rs:378:56
[INFO] [stderr]     |
[INFO] [stderr] 378 |         let userdata = Box::new(Some(userdata)) as Box<Any>;
[INFO] [stderr]     |                                                        ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
[INFO] [stderr]    --> src/middle/types.rs:457:9
[INFO] [stderr]     |
[INFO] [stderr] 457 |         Type::u64().clone().clone();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: cloning is often expensive and is not expected to have side effects
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
[INFO] [stderr]    --> src/middle/types.rs:469:9
[INFO] [stderr]     |
[INFO] [stderr] 469 | /         Type::structure(vec![Type::i64(),
[INFO] [stderr] 470 | |                              Type::i64(),
[INFO] [stderr] 471 | |                              Type::u64()]).clone().clone();
[INFO] [stderr]     | |___________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: cloning is often expensive and is not expected to have side effects
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.70s
[INFO] running `"docker" "inspect" "5d3fa5acfba9e4ac33948aed03b4658a7c01b3ec86cc118afe938b8e16079e64"`
[INFO] running `"docker" "rm" "-f" "5d3fa5acfba9e4ac33948aed03b4658a7c01b3ec86cc118afe938b8e16079e64"`
[INFO] [stdout] 5d3fa5acfba9e4ac33948aed03b4658a7c01b3ec86cc118afe938b8e16079e64
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/libffi/0.7.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] f13b7bf6687dbdc80528574f25227961fd78808ecd2d19ac3cff737cd9ef26fb
[INFO] running `"docker" "start" "-a" "f13b7bf6687dbdc80528574f25227961fd78808ecd2d19ac3cff737cd9ef26fb"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/libffi-cd03c77e2469a068
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test middle::types::test::clone_struct ... ok
[INFO] [stdout] test middle::types::test::clone_u64 ... ok
[INFO] [stdout] test middle::test::call ... ok
[INFO] [stdout] test middle::types::test::create_u64 ... ok
[INFO] [stdout] test middle::test::closure ... ok
[INFO] [stdout] test high::test::new ... ok
[INFO] [stdout] test middle::test::rust_lambda ... ok
[INFO] [stdout] test middle::types::test::create_struct ... ok
[INFO] [stderr]    Doc-tests libffi
[INFO] [stdout] test high::test::new_mut ... ok
[INFO] [stdout] test high::test::new_with_cif ... ok
[INFO] [stdout] test high::test::new_with_cif_mut ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test src/lib.rs -  (line 30) ... ok
[INFO] [stdout] test src/high/mod.rs - high (line 55) ... ok
[INFO] [stdout] test src/high/call.rs - high::call (line 8) ... ok
[INFO] [stdout] test src/low.rs - low::call (line 311) ... ok
[INFO] [stdout] test src/lib.rs -  (line 67) ... ok
[INFO] [stdout] test src/high/call.rs - high::call::call (line 66) ... ok
[INFO] [stdout] test src/low.rs - low::closure_alloc (line 357) ... ok
[INFO] [stdout] test src/high/mod.rs - high (line 35) ... ok
[INFO] [stdout] test src/high/call.rs - ffi_call (line 95) ... ok
[INFO] [stdout] test src/low.rs - low::closure_free (line 378) ... ok
[INFO] [stdout] test src/low.rs - low::type_tag (line 170) ... ok
[INFO] [stdout] test src/low.rs - low::prep_cif (line 227) ... ok
[INFO] [stdout] test src/low.rs - low::prep_closure (line 454) ... ok
[INFO] [stdout] test src/low.rs - low::prep_closure_mut (line 545) ... ok
[INFO] [stdout] test src/middle/mod.rs - middle::Cif (line 71) ... ok
[INFO] [stdout] test src/middle/mod.rs - middle::Closure (line 200) ... ok
[INFO] [stdout] test src/middle/builder.rs - middle::builder::Builder (line 23) ... ok
[INFO] [stdout] test src/middle/types.rs - middle::types::Type (line 45) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "f13b7bf6687dbdc80528574f25227961fd78808ecd2d19ac3cff737cd9ef26fb"`
[INFO] running `"docker" "rm" "-f" "f13b7bf6687dbdc80528574f25227961fd78808ecd2d19ac3cff737cd9ef26fb"`
[INFO] [stdout] f13b7bf6687dbdc80528574f25227961fd78808ecd2d19ac3cff737cd9ef26fb