[INFO] fetching crate conjecture 0.4.0...
[INFO] extracting crate conjecture 0.4.0 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/conjecture/0.4.0
[INFO] extracting crate conjecture 0.4.0 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/conjecture/0.4.0
[INFO] validating manifest of conjecture-0.4.0 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of conjecture-0.4.0 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing conjecture-0.4.0
[INFO] finished frobbing conjecture-0.4.0
[INFO] frobbed toml for conjecture-0.4.0 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/conjecture/0.4.0/Cargo.toml
[INFO] started frobbing conjecture-0.4.0
[INFO] finished frobbing conjecture-0.4.0
[INFO] frobbed toml for conjecture-0.4.0 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/conjecture/0.4.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing conjecture-0.4.0 against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/conjecture/0.4.0:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] 1ce3f1ce311cc2992cdba97e00473699151f8a9426d8d16a68b650e83b9fc096
[INFO] running `"docker" "start" "-a" "1ce3f1ce311cc2992cdba97e00473699151f8a9426d8d16a68b650e83b9fc096"`
[INFO] [stderr]    Compiling crypto-hash v0.3.3
[INFO] [stderr]    Compiling conjecture v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/database.rs:17:30
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub type BoxedDatabase = Box<Database>;
[INFO] [stderr]    |                              ^^^^^^^^ help: use `dyn`: `dyn Database`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/engine.rs:157:21
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let mut minimized_examples = &mut self.minimized_examples;
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/engine.rs:158:21
[INFO] [stderr]     |
[INFO] [stderr] 158 |                 let mut database = &mut self.database;
[INFO] [stderr]     |                     ----^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.17s
[INFO] running `"docker" "inspect" "1ce3f1ce311cc2992cdba97e00473699151f8a9426d8d16a68b650e83b9fc096"`
[INFO] running `"docker" "rm" "-f" "1ce3f1ce311cc2992cdba97e00473699151f8a9426d8d16a68b650e83b9fc096"`
[INFO] [stdout] 1ce3f1ce311cc2992cdba97e00473699151f8a9426d8d16a68b650e83b9fc096
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/conjecture/0.4.0:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2800197ef3ea9a502fb1f007670b8c857150a5535b5bbe9bd6b08b9b04d9b3dc
[INFO] running `"docker" "start" "-a" "2800197ef3ea9a502fb1f007670b8c857150a5535b5bbe9bd6b08b9b04d9b3dc"`
[INFO] [stderr]    Compiling conjecture v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/database.rs:17:30
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub type BoxedDatabase = Box<Database>;
[INFO] [stderr]    |                              ^^^^^^^^ help: use `dyn`: `dyn Database`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/engine.rs:157:21
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let mut minimized_examples = &mut self.minimized_examples;
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/engine.rs:158:21
[INFO] [stderr]     |
[INFO] [stderr] 158 |                 let mut database = &mut self.database;
[INFO] [stderr]     |                     ----^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.77s
[INFO] running `"docker" "inspect" "2800197ef3ea9a502fb1f007670b8c857150a5535b5bbe9bd6b08b9b04d9b3dc"`
[INFO] running `"docker" "rm" "-f" "2800197ef3ea9a502fb1f007670b8c857150a5535b5bbe9bd6b08b9b04d9b3dc"`
[INFO] [stdout] 2800197ef3ea9a502fb1f007670b8c857150a5535b5bbe9bd6b08b9b04d9b3dc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/conjecture/0.4.0:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] da2a533e18def24fa9c595cbf8d5b477c96fd5af3904cf6adb01866210037721
[INFO] running `"docker" "start" "-a" "da2a533e18def24fa9c595cbf8d5b477c96fd5af3904cf6adb01866210037721"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/conjecture-f6f0894fc0f7abcc
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test intminimize::tests::sort_bits ... ok
[INFO] [stdout] test intminimize::tests::minimize_down_to ... ok
[INFO] [stdout] test database::tests::can_delete_non_existing_key ... ok
[INFO] [stdout] test intminimize::tests::unset_relevant_bits ... ok
[INFO] [stdout] test database::tests::appears_in_listing_after_saving ... ok
[INFO] [stdout] test database::tests::can_delete_key ... ok
[INFO] [stdout] test engine::tests::minimizes_all_examples ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests conjecture
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "da2a533e18def24fa9c595cbf8d5b477c96fd5af3904cf6adb01866210037721"`
[INFO] running `"docker" "rm" "-f" "da2a533e18def24fa9c595cbf8d5b477c96fd5af3904cf6adb01866210037721"`
[INFO] [stdout] da2a533e18def24fa9c595cbf8d5b477c96fd5af3904cf6adb01866210037721