[INFO] crate easy_ffi 0.1.0 is already in cache
[INFO] extracting crate easy_ffi 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/easy_ffi/0.1.0
[INFO] extracting crate easy_ffi 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/easy_ffi/0.1.0
[INFO] validating manifest of easy_ffi-0.1.0 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 easy_ffi-0.1.0 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 easy_ffi-0.1.0
[INFO] finished frobbing easy_ffi-0.1.0
[INFO] frobbed toml for easy_ffi-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/easy_ffi/0.1.0/Cargo.toml
[INFO] started frobbing easy_ffi-0.1.0
[INFO] finished frobbing easy_ffi-0.1.0
[INFO] frobbed toml for easy_ffi-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/easy_ffi/0.1.0/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 easy_ffi-0.1.0 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/easy_ffi/0.1.0:/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] 0fabb55b80e7af1303fc393721af036e6b919d58237b267ba1f219ef867818fa
[INFO] running `"docker" "start" "-a" "0fabb55b80e7af1303fc393721af036e6b919d58237b267ba1f219ef867818fa"`
[INFO] [stderr]    Compiling easy_ffi v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: lint `private_no_mangle_fns` has been removed: `no longer a warning, #[no_mangle] functions always exported`
[INFO] [stderr]    --> src/lib.rs:144:14
[INFO] [stderr]     |
[INFO] [stderr] 144 |     #![allow(private_no_mangle_fns)]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(renamed_and_removed_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `"docker" "inspect" "0fabb55b80e7af1303fc393721af036e6b919d58237b267ba1f219ef867818fa"`
[INFO] running `"docker" "rm" "-f" "0fabb55b80e7af1303fc393721af036e6b919d58237b267ba1f219ef867818fa"`
[INFO] [stdout] 0fabb55b80e7af1303fc393721af036e6b919d58237b267ba1f219ef867818fa
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/easy_ffi/0.1.0:/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] 7142d65b1cbfe25ba569e6ded07ae782c8d23b3324471644153057bdd3ad1213
[INFO] running `"docker" "start" "-a" "7142d65b1cbfe25ba569e6ded07ae782c8d23b3324471644153057bdd3ad1213"`
[INFO] [stderr]    Compiling easy_ffi v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: lint `private_no_mangle_fns` has been removed: `no longer a warning, #[no_mangle] functions always exported`
[INFO] [stderr]    --> src/lib.rs:144:14
[INFO] [stderr]     |
[INFO] [stderr] 144 |     #![allow(private_no_mangle_fns)]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(renamed_and_removed_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:127:90
[INFO] [stderr]     |
[INFO] [stderr] 127 |                           ::std::result::Result<$ok_ty, ::std::result::Result<$err_ty, Box<::std::any::Any + Send + 'static>>> =
[INFO] [stderr]     |                                                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ::std::any::Any + Send + 'static`
[INFO] [stderr] ...
[INFO] [stderr] 160 | /     my_ffi_fn! (
[INFO] [stderr] 161 | |         /// Foo: do stuff
[INFO] [stderr] 162 | |         fn foo(i: i32) -> Result<i32, &'static str> {
[INFO] [stderr] 163 | |             match i {
[INFO] [stderr] ...   |
[INFO] [stderr] 168 | |         }
[INFO] [stderr] 169 | |     );
[INFO] [stderr]     | |______- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `"docker" "inspect" "7142d65b1cbfe25ba569e6ded07ae782c8d23b3324471644153057bdd3ad1213"`
[INFO] running `"docker" "rm" "-f" "7142d65b1cbfe25ba569e6ded07ae782c8d23b3324471644153057bdd3ad1213"`
[INFO] [stdout] 7142d65b1cbfe25ba569e6ded07ae782c8d23b3324471644153057bdd3ad1213
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/easy_ffi/0.1.0:/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] f2b761954ab9166dde30daf415bc4fa92fc7123e0b61643b263a5eeda81f66f7
[INFO] running `"docker" "start" "-a" "f2b761954ab9166dde30daf415bc4fa92fc7123e0b61643b263a5eeda81f66f7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/easy_ffi-10a522a95b7832c2
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests easy_ffi
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs -  (line 61) ... ok
[INFO] [stdout] test src/lib.rs -  (line 20) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "f2b761954ab9166dde30daf415bc4fa92fc7123e0b61643b263a5eeda81f66f7"`
[INFO] running `"docker" "rm" "-f" "f2b761954ab9166dde30daf415bc4fa92fc7123e0b61643b263a5eeda81f66f7"`
[INFO] [stdout] f2b761954ab9166dde30daf415bc4fa92fc7123e0b61643b263a5eeda81f66f7