[INFO] crate clear_on_drop 0.2.3 is already in cache
[INFO] extracting crate clear_on_drop 0.2.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/clear_on_drop/0.2.3
[INFO] extracting crate clear_on_drop 0.2.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/clear_on_drop/0.2.3
[INFO] validating manifest of clear_on_drop-0.2.3 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 clear_on_drop-0.2.3 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 clear_on_drop-0.2.3
[INFO] finished frobbing clear_on_drop-0.2.3
[INFO] frobbed toml for clear_on_drop-0.2.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/clear_on_drop/0.2.3/Cargo.toml
[INFO] started frobbing clear_on_drop-0.2.3
[INFO] finished frobbing clear_on_drop-0.2.3
[INFO] frobbed toml for clear_on_drop-0.2.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/clear_on_drop/0.2.3/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 clear_on_drop-0.2.3 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/clear_on_drop/0.2.3:/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] 91521d00d17efe601c829b644117aade0b67aacf539a544f05a45fc16da5bccf
[INFO] running `"docker" "start" "-a" "91521d00d17efe601c829b644117aade0b67aacf539a544f05a45fc16da5bccf"`
[INFO] [stderr]    Compiling clear_on_drop v0.2.3 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/clear_stack_on_return.rs:30:21
[INFO] [stderr]    |
[INFO] [stderr] 30 |     hide_ptr::<&mut FnMut() -> R>(&mut f)()
[INFO] [stderr]    |                     ^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> R`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `"docker" "inspect" "91521d00d17efe601c829b644117aade0b67aacf539a544f05a45fc16da5bccf"`
[INFO] running `"docker" "rm" "-f" "91521d00d17efe601c829b644117aade0b67aacf539a544f05a45fc16da5bccf"`
[INFO] [stdout] 91521d00d17efe601c829b644117aade0b67aacf539a544f05a45fc16da5bccf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/clear_on_drop/0.2.3:/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] 3a71c15ecd91d49c546bf2d3b2b62b6602471662046a1a821524e159c063bf82
[INFO] running `"docker" "start" "-a" "3a71c15ecd91d49c546bf2d3b2b62b6602471662046a1a821524e159c063bf82"`
[INFO] [stderr]    Compiling clear_on_drop v0.2.3 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/clear_stack_on_return.rs:30:21
[INFO] [stderr]    |
[INFO] [stderr] 30 |     hide_ptr::<&mut FnMut() -> R>(&mut f)()
[INFO] [stderr]    |                     ^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> R`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `"docker" "inspect" "3a71c15ecd91d49c546bf2d3b2b62b6602471662046a1a821524e159c063bf82"`
[INFO] running `"docker" "rm" "-f" "3a71c15ecd91d49c546bf2d3b2b62b6602471662046a1a821524e159c063bf82"`
[INFO] [stdout] 3a71c15ecd91d49c546bf2d3b2b62b6602471662046a1a821524e159c063bf82
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/clear_on_drop/0.2.3:/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] e5f8a4cb9da286a26eab31ff9a91ee778c8b1af8f4d5d71b3ca663f89a881752
[INFO] running `"docker" "start" "-a" "e5f8a4cb9da286a26eab31ff9a91ee778c8b1af8f4d5d71b3ca663f89a881752"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/clear_on_drop-8768cb9204d09e11
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test clear_on_drop::tests::into_uncleared_box ... ok
[INFO] [stdout] test clear_on_drop::tests::into_string ... ok
[INFO] [stdout] test clear_on_drop::tests::into_box ... ok
[INFO] [stdout] test clear_on_drop::tests::into_uncleared_string ... ok
[INFO] [stdout] test clear_on_drop::tests::on_boxed_slice ... ok
[INFO] [stdout] test clear_on_drop::tests::on_fixed_size_array ... ok
[INFO] [stdout] test clear_on_drop::tests::on_slice ... ok
[INFO] [stdout] test clear_on_drop::tests::on_box ... ok
[INFO] [stdout] test clear_on_drop::tests::on_str_slice ... ok
[INFO] [stdout] test clear_on_drop::tests::on_stack ... ok
[INFO] [stdout] test clear_on_drop::tests::on_string ... ok
[INFO] [stdout] test hide::tests::hide_ptr ... ok
[INFO] [stdout] test hide::tests::hide_mem ... ok
[INFO] [stderr]    Doc-tests clear_on_drop
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/clear_stack_on_return.rs - clear_stack_on_return::clear_stack_on_return_fnonce (line 40) ... ok
[INFO] [stdout] test src/clear.rs - clear (line 7) ... ok
[INFO] [stdout] test src/clear_on_drop.rs - clear_on_drop::ClearOnDrop (line 20) ... ok
[INFO] [stdout] test src/clear.rs - clear (line 21) ... ok
[INFO] [stdout] test src/clear_stack_on_return.rs - clear_stack_on_return::clear_stack_on_return (line 17) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e5f8a4cb9da286a26eab31ff9a91ee778c8b1af8f4d5d71b3ca663f89a881752"`
[INFO] running `"docker" "rm" "-f" "e5f8a4cb9da286a26eab31ff9a91ee778c8b1af8f4d5d71b3ca663f89a881752"`
[INFO] [stdout] e5f8a4cb9da286a26eab31ff9a91ee778c8b1af8f4d5d71b3ca663f89a881752