[INFO] crate libffi 0.7.0 is already in cache
[INFO] extracting crate libffi 0.7.0 into work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/libffi/0.7.0
[INFO] extracting crate libffi 0.7.0 into work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/libffi/0.7.0
[INFO] validating manifest of libffi-0.7.0 on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of libffi-0.7.0 on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "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/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/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/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/libffi/0.7.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking libffi-0.7.0 against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-2/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/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=forbid" "-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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4b43f2d050431a5abc41d5d83641b6f60eebfbe15d3ebc80c118ed7b24e046ee
[INFO] running `"docker" "start" "-a" "4b43f2d050431a5abc41d5d83641b6f60eebfbe15d3ebc80c118ed7b24e046ee"`
[INFO] [stderr]     Checking abort_on_panic v2.0.0
[INFO] [stderr]    Compiling libffi-sys v0.7.0
[INFO] [stderr]     Checking 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: 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: 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 38.52s
[INFO] running `"docker" "inspect" "4b43f2d050431a5abc41d5d83641b6f60eebfbe15d3ebc80c118ed7b24e046ee"`
[INFO] running `"docker" "rm" "-f" "4b43f2d050431a5abc41d5d83641b6f60eebfbe15d3ebc80c118ed7b24e046ee"`
[INFO] [stdout] 4b43f2d050431a5abc41d5d83641b6f60eebfbe15d3ebc80c118ed7b24e046ee