[INFO] fetching crate fuzzcheck 0.9.0...
[INFO] testing fuzzcheck-0.9.0 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate fuzzcheck 0.9.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate fuzzcheck 0.9.0 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fuzzcheck 0.9.0
[INFO] finished tweaking crates.io crate fuzzcheck 0.9.0
[INFO] tweaked toml for crates.io crate fuzzcheck 0.9.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71584b0f5a5c1d8aa67c0294b68631522d76a59907c0960e964d6ec19caf7083
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "71584b0f5a5c1d8aa67c0294b68631522d76a59907c0960e964d6ec19caf7083", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71584b0f5a5c1d8aa67c0294b68631522d76a59907c0960e964d6ec19caf7083", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71584b0f5a5c1d8aa67c0294b68631522d76a59907c0960e964d6ec19caf7083", kill_on_drop: false }`
[INFO] [stdout] 71584b0f5a5c1d8aa67c0294b68631522d76a59907c0960e964d6ec19caf7083
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16e7732c89338d684ead80960d317bb90d4552c8f0461409ee7ecc1f9784695c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "16e7732c89338d684ead80960d317bb90d4552c8f0461409ee7ecc1f9784695c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling crc32fast v1.3.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling fuzzcheck v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling decent-synquote-alternative v0.4.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling nu-ansi-term v0.39.0
[INFO] [stderr]    Compiling fuzzcheck_common v0.9.0
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling fuzzcheck_mutators_derive v0.9.0
[INFO] [stderr]    Compiling object v0.27.1
[INFO] [stderr]    Compiling flate2 v1.0.22
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.13s
[INFO] running `Command { std: "docker" "inspect" "16e7732c89338d684ead80960d317bb90d4552c8f0461409ee7ecc1f9784695c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16e7732c89338d684ead80960d317bb90d4552c8f0461409ee7ecc1f9784695c", kill_on_drop: false }`
[INFO] [stdout] 16e7732c89338d684ead80960d317bb90d4552c8f0461409ee7ecc1f9784695c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6d523b5b32fac7edf39d87f936656f9c9d2785fd639015a486f9fd48c81e5ca4
[INFO] running `Command { std: "docker" "start" "-a" "6d523b5b32fac7edf39d87f936656f9c9d2785fd639015a486f9fd48c81e5ca4", kill_on_drop: false }`
[INFO] [stderr]    Compiling fuzzcheck v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 37.07s
[INFO] running `Command { std: "docker" "inspect" "6d523b5b32fac7edf39d87f936656f9c9d2785fd639015a486f9fd48c81e5ca4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d523b5b32fac7edf39d87f936656f9c9d2785fd639015a486f9fd48c81e5ca4", kill_on_drop: false }`
[INFO] [stdout] 6d523b5b32fac7edf39d87f936656f9c9d2785fd639015a486f9fd48c81e5ca4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 27b9409b24437c4afee562bef88c76e386b9a27288542e755b5a4ca39157f871
[INFO] running `Command { std: "docker" "start" "-a" "27b9409b24437c4afee562bef88c76e386b9a27288542e755b5a4ca39157f871", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fuzzcheck-ec77af015c0fcffd)
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test fenwick_tree::tests::test_basic_1 ... ok
[INFO] [stdout] test mutators::fixed_len_vector::tests::test_constrained_length_mutator ... ok
[INFO] [stdout] test mutators::character_classes::tests::char_classes_test ... ok
[INFO] [stdout] test mutators::test::test_size_to_cplxity ... ok
[INFO] [stdout] test sensors_and_pools::maximise_counter_value_pool::tests::test_basic_pool_1 ... ok
[INFO] [stdout] test sensors_and_pools::most_n_diverse_pool::tests::test_most_n_diverse_pool ... ok
[INFO] [stdout] test split_string::tests::test1 ... ok
[INFO] [stdout] test mutators::vose_alias::tests::test_probabilities_1 ... ok
[INFO] [stdout] test mutators::vose_alias::tests::test_probabilities_2 ... ok
[INFO] [stdout] test sensors_and_pools::maximise_counter_value_pool::tests::test_basic_pool_2 ... ok
[INFO] [stdout] test mutators::vector::tests::test_constrained_length_mutator_ordered_mutate ... ok
[INFO] [stdout] test mutators::vector::tests::test_constrained_length_mutator_ordered_arbitrary ... ok
[INFO] [stdout] test sensors_and_pools::simplest_to_activate_counter_pool::tests::property_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 5.55s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/alternation_char_mutators.rs (/opt/rustwide/target/debug/deps/alternation_char_mutators-fabe2dc972654dfe)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/char_mutators.rs (/opt/rustwide/target/debug/deps/char_mutators-81f751a75088a00a)
[INFO] [stdout] test test_alternation_char ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test other_test_char_mutator ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/constrained_integer.rs (/opt/rustwide/target/debug/deps/constrained_integer-768af767ac23f5de)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_arbitrary_constrained_signed_integer_8 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/derived_enum.rs (/opt/rustwide/target/debug/deps/derived_enum-6ec74457e40b89d4)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_derived_struct ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 12.69s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/derived_recursive_struct.rs (/opt/rustwide/target/debug/deps/derived_recursive_struct-a8c7c484883e22a3)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/derived_struct.rs (/opt/rustwide/target/debug/deps/derived_struct-8b7c759f72c3842e)
[INFO] [stdout] test test_derived_struct ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 9.64s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/grammar_based_mutators.rs (/opt/rustwide/target/debug/deps/grammar_based_mutators-1c197609fe01f8c6)
[INFO] [stdout] test test_derived_struct ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.80s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/lib.rs (/opt/rustwide/target/debug/deps/lib-84c64f1c7240a7cc)
[INFO] [stdout] test test_grammar_based_ast_mutator ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 28.25s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test expansions::recursive_enum::test_compile ... ok
[INFO] [stdout] test expansions::enums_with_one_item_one_field::test::test_compile ... ok
[INFO] [stdout] test vector::test_vector_explore ... ok
[INFO] [stdout] test expansions::one_field_structs::test::test_compile ... ok
[INFO] [stdout] test expansions::recursive_struct::test_compile ... ok
[INFO] [stdout] test expansions::enums_with_items_with_and_without_fields::test_compile ... ok
[INFO] [stdout] test expansions::enums_with_generic_type_params::test_compile ... ok
[INFO] [stdout] test constrained_integer::test_arbitrary_constrained_signed_integer_8 ... ok
[INFO] [stdout] test char_mutators::other_test_char_mutator ... ok
[INFO] [stdout] test vector::test_vector_mutator ... ok
[INFO] [stdout] test alternation_char_mutators::test_alternation_char ... ok
[INFO] [stdout] test option::test_option ... ok
[INFO] [stdout] test derived_recursive_struct::test_derived_struct ... ok
[INFO] [stdout] test grammar_based_mutators::test_grammar_based_ast_mutator ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 40.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/option.rs (/opt/rustwide/target/debug/deps/option-9452ad7b2b328e09)
[INFO] [stdout] test test_option ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.91s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/vector.rs (/opt/rustwide/target/debug/deps/vector-bc79aa2da672e8ab)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_vector_explore ... ok
[INFO] [stdout] test test_vector_mutator ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.63s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fuzzcheck
[INFO] [stdout] 
[INFO] [stdout] running 27 tests
[INFO] [stdout] test src/code_coverage_sensor/mod.rs - code_coverage_sensor::CodeCoverageSensor (line 24) - compile ... ok
[INFO] [stdout] test src/builder.rs - builder::CodeCoverageSensorAndPoolBuilder (line 682) - compile ... ok
[INFO] [stdout] test src/builder.rs - builder (line 36) - compile ... ok
[INFO] [stdout] test src/builder.rs - builder (line 22) - compile ... ok
[INFO] [stdout] test src/builder.rs - builder (line 14) - compile ... ok
[INFO] [stdout] test src/builder.rs - builder::FuzzerBuilder1<T,F>::mutator (line 325) ... ok
[INFO] [stdout] test src/builder.rs - builder::FuzzerBuilder1<T,F>::mutator (line 340) ... ok
[INFO] [stdout] test src/builder.rs - builder::FuzzerBuilder1<T,F>::mutator (line 318) ... ok
[INFO] [stdout] test src/lib.rs - make_mutator (line 115) ... ok
[INFO] [stdout] test src/mutators/recursive.rs - mutators::recursive::RecursiveMutator (line 72) ... ok
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name fuzzcheck --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps -L native=/opt/rustwide/target/debug/build/fuzzcheck-598c9c2b07b06bb4/out --extern ahash=/opt/rustwide/target/debug/deps/libahash-ea9cf8ab63983f8c.rlib --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-05dfd5b5d1225bed.rlib --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-90e3626e3c41eec3.rlib --extern fastrand=/opt/rustwide/target/debug/deps/libfastrand-0ba88d39402d5a2c.rlib --extern flate2=/opt/rustwide/target/debug/deps/libflate2-97028a135bc0a314.rlib --extern fuzzcheck=/opt/rustwide/target/debug/deps/libfuzzcheck-3971d7e0ca75fd28.rlib --extern fuzzcheck_common=/opt/rustwide/target/debug/deps/libfuzzcheck_common-c9f3bb77e4a4a4a5.rlib --extern fuzzcheck_mutators_derive=/opt/rustwide/target/debug/deps/libfuzzcheck_mutators_derive-d58ae78e6668b518.so --extern getopts=/opt/rustwide/target/debug/deps/libgetopts-25327fafcfd1148d.rlib --extern libc=/opt/rustwide/target/debug/deps/liblibc-91d257e9eed50cc0.rlib --extern md5=/opt/rustwide/target/debug/deps/libmd5-7686c4c65dd50a84.rlib --extern nu_ansi_term=/opt/rustwide/target/debug/deps/libnu_ansi_term-f39a7230d2682297.rlib --extern object=/opt/rustwide/target/debug/deps/libobject-03556807b66a355c.rlib --extern regex_syntax=/opt/rustwide/target/debug/deps/libregex_syntax-c25dc19d7487cdf7.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-10ccb4187e78e3c1.rlib --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-cc32dbe3eb8f8678.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "27b9409b24437c4afee562bef88c76e386b9a27288542e755b5a4ca39157f871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27b9409b24437c4afee562bef88c76e386b9a27288542e755b5a4ca39157f871", kill_on_drop: false }`
[INFO] [stdout] 27b9409b24437c4afee562bef88c76e386b9a27288542e755b5a4ca39157f871