[INFO] fetching crate mutatis 0.3.2...
[INFO] testing mutatis-0.3.2 against 1.91.0 for beta-1.92-2
[INFO] extracting crate mutatis 0.3.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate mutatis 0.3.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mutatis 0.3.2
[INFO] tweaked toml for crates.io crate mutatis 0.3.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mutatis 0.3.2 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mutatis 0.3.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mutatis-derive v0.3.2
[INFO] [stderr]   Downloaded syn v2.0.72
[INFO] [stderr]   Downloaded cc v1.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fef85ae351f77ea54d520c2f5cfbbf8ee0794bf06d8896ee74081bfd1fbc89ed
[INFO] running `Command { std: "docker" "start" "-a" "fef85ae351f77ea54d520c2f5cfbbf8ee0794bf06d8896ee74081bfd1fbc89ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fef85ae351f77ea54d520c2f5cfbbf8ee0794bf06d8896ee74081bfd1fbc89ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef85ae351f77ea54d520c2f5cfbbf8ee0794bf06d8896ee74081bfd1fbc89ed", kill_on_drop: false }`
[INFO] [stdout] fef85ae351f77ea54d520c2f5cfbbf8ee0794bf06d8896ee74081bfd1fbc89ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f39b6406a2bbb9808c8feb709ad40a457c8401ff7d4230f4ef26e5df8544a5e
[INFO] running `Command { std: "docker" "start" "-a" "4f39b6406a2bbb9808c8feb709ad40a457c8401ff7d4230f4ef26e5df8544a5e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling mutatis v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `Command { std: "docker" "inspect" "4f39b6406a2bbb9808c8feb709ad40a457c8401ff7d4230f4ef26e5df8544a5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f39b6406a2bbb9808c8feb709ad40a457c8401ff7d4230f4ef26e5df8544a5e", kill_on_drop: false }`
[INFO] [stdout] 4f39b6406a2bbb9808c8feb709ad40a457c8401ff7d4230f4ef26e5df8544a5e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9edbe068e9aad402ca0c0ef940c834a342d5f13f24653dccb364c7693db02599
[INFO] running `Command { std: "docker" "start" "-a" "9edbe068e9aad402ca0c0ef940c834a342d5f13f24653dccb364c7693db02599", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling regex-syntax v0.8.4
[INFO] [stderr]    Compiling anstyle v1.0.8
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling anstyle-parse v0.2.5
[INFO] [stderr]    Compiling anyhow v1.0.86
[INFO] [stderr]    Compiling colorchoice v1.0.2
[INFO] [stderr]    Compiling anstyle-query v1.1.1
[INFO] [stderr]    Compiling arbitrary v1.3.2
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling anstream v0.6.15
[INFO] [stderr]    Compiling jobserver v0.1.32
[INFO] [stderr]    Compiling cc v1.1.8
[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]    Compiling libfuzzer-sys v0.4.7
[INFO] [stderr]    Compiling regex v1.10.6
[INFO] [stderr]    Compiling env_filter v0.1.2
[INFO] [stderr]    Compiling env_logger v0.11.5
[INFO] [stderr]    Compiling mutatis v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 39.34s
[INFO] running `Command { std: "docker" "inspect" "9edbe068e9aad402ca0c0ef940c834a342d5f13f24653dccb364c7693db02599", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9edbe068e9aad402ca0c0ef940c834a342d5f13f24653dccb364c7693db02599", kill_on_drop: false }`
[INFO] [stdout] 9edbe068e9aad402ca0c0ef940c834a342d5f13f24653dccb364c7693db02599
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 36dc6a2f516c1f77ffea71196431d09c3b8543ff221b2d9b37d37fb756911f7f
[INFO] running `Command { std: "docker" "start" "-a" "36dc6a2f516c1f77ffea71196431d09c3b8543ff221b2d9b37d37fb756911f7f", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mutatis-fada644fb867bcb3)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/derive.rs (/opt/rustwide/target/debug/deps/derive-ebdd59e0cc1ad4ac)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests mutatis
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 82 tests
[INFO] [stdout] test src/_guide/comparisons.rs - _guide::comparisons (line 69) - compile ... ok
[INFO] [stdout] test src/_guide/derive_macro.rs - _guide::derive_macro (line 108) - compile ... ok
[INFO] [stdout] test src/_guide/comparisons.rs - _guide::comparisons (line 197) - compile ... ok
[INFO] [stdout] test src/_guide/comparisons.rs - _guide::comparisons (line 116) - compile ... ok
[INFO] [stdout] test src/_guide/derive_macro.rs - _guide::derive_macro (line 167) ... ok
[INFO] [stdout] test src/_guide/comparisons.rs - _guide::comparisons (line 235) - compile ... ok
[INFO] [stdout] test src/_guide/derive_macro.rs - _guide::derive_macro (line 17) ... ok
[INFO] [stdout] test src/_guide/derive_macro.rs - _guide::derive_macro (line 224) ... ok
[INFO] [stdout] test src/_guide/derive_macro.rs - _guide::derive_macro (line 195) ... ok
[INFO] [stdout] test src/_guide/derive_macro.rs - _guide::derive_macro (line 146) ... ok
[INFO] [stdout] test src/_guide/derive_macro.rs - _guide::derive_macro (line 91) - compile ... ok
[INFO] [stdout] test src/_guide/fuzzer_integration.rs - _guide::fuzzer_integration (line 44) - compile ... ok
[INFO] [stdout] test src/_guide/derive_macro.rs - _guide::derive_macro (line 122) ... ok
[INFO] [stdout] test src/_guide/derive_macro.rs - _guide::derive_macro (line 257) ... ok
[INFO] [stdout] test src/error.rs - error::Error (line 63) ... ok
[INFO] [stdout] test src/error.rs - error::ErrorKind (line 202) ... ok
[INFO] [stdout] test src/error.rs - error::ErrorMessage (line 253) ... ok
[INFO] [stdout] test src/_guide/derive_macro.rs - _guide::derive_macro (line 37) ... ok
[INFO] [stdout] test src/_guide/derive_macro.rs - _guide::derive_macro (line 74) ... ok
[INFO] [stdout] test src/error.rs - error::ResultExt::ignore_exhausted (line 16) ... ok
[INFO] [stdout] test src/lib.rs - (line 242) ... ok
[INFO] [stdout] test src/_guide/shrinking.rs - _guide::shrinking (line 59) ... ok
[INFO] [stdout] test src/_guide/shrinking.rs - _guide::shrinking (line 15) ... ok
[INFO] [stdout] test src/lib.rs - (line 193) ... ok
[INFO] [stdout] test src/lib.rs - (line 115) ... ok
[INFO] [stdout] test src/lib.rs - Mutate (line 495) ... ok
[INFO] [stdout] test src/lib.rs - Mutate::by_ref (line 870) ... ok
[INFO] [stdout] test src/lib.rs - (line 71) ... ok
[INFO] [stdout] test src/lib.rs - Mutate (line 520) ... ok
[INFO] [stdout] test src/lib.rs - Mutate (line 580) ... ok
[INFO] [stdout] test src/lib.rs - Mutate::mutate (line 663) ... ok
[INFO] [stdout] test src/lib.rs - Mutate::proj (line 827) ... ok
[INFO] [stdout] test src/lib.rs - Session::mutate (line 117) ... ok
[INFO] [stdout] test src/lib.rs - Mutate::map (line 788) ... ok
[INFO] [stdout] test src/mutators.rs - mutators (line 5) ... ok
[INFO] [stdout] test src/lib.rs - Session (line 45) ... ok
[INFO] [stdout] test src/lib.rs - Mutate::or (line 740) ... ok
[INFO] [stdout] test src/lib.rs - Session::generate (line 198) ... ok
[INFO] [stdout] test src/mutators.rs - mutators::from_fn (line 85) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::array (line 622) ... ok
[INFO] [stdout] test src/lib.rs - Session::mutate_with (line 157) ... ok
[INFO] [stdout] test src/lib.rs - Session::generate_with (line 239) ... ok
[INFO] [stdout] test src/mutators.rs - mutators::range (line 160) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::char (line 183) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::bool (line 22) ... ok
[INFO] [stdout] test src/mutators.rs - mutators::nop (line 42) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::i128 (line 162) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::i16 (line 162) ... ok
[INFO] [stdout] test src/mutators/combinators.rs - mutators::combinators::just (line 91) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::f32 (line 318) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::i64 (line 162) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::isize (line 162) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple10 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple12 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple11 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::i32 (line 162) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple1 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::f64 (line 402) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple14 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::i8 (line 162) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple13 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple16 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple2 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple3 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple15 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple7 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple5 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple8 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple4 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::u16 (line 162) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple6 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::u128 (line 162) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::tuple9 (line 562) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::usize (line 162) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::unit (line 585) ... ok
[INFO] [stdout] test src/mutators/core_impls/option.rs - mutators::core_impls::option::option (line 16) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::u8 (line 162) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::u64 (line 162) ... ok
[INFO] [stdout] test src/mutators/core_impls.rs - mutators::core_impls::u32 (line 162) ... ok
[INFO] [stdout] test src/mutators/core_impls/option.rs - mutators::core_impls::option::none (line 143) ... ok
[INFO] [stdout] test src/mutators/core_impls/option.rs - mutators::core_impls::option::some (line 86) ... ok
[INFO] [stdout] test src/mutators/core_impls/result.rs - mutators::core_impls::result::result (line 17) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 82 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 6.20s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "36dc6a2f516c1f77ffea71196431d09c3b8543ff221b2d9b37d37fb756911f7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36dc6a2f516c1f77ffea71196431d09c3b8543ff221b2d9b37d37fb756911f7f", kill_on_drop: false }`
[INFO] [stdout] 36dc6a2f516c1f77ffea71196431d09c3b8543ff221b2d9b37d37fb756911f7f