[INFO] fetching crate fuzzcheck_mutators_derive 0.6.0...
[INFO] testing fuzzcheck_mutators_derive-0.6.0 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate fuzzcheck_mutators_derive 0.6.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate fuzzcheck_mutators_derive 0.6.0 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fuzzcheck_mutators_derive 0.6.0
[INFO] finished tweaking crates.io crate fuzzcheck_mutators_derive 0.6.0
[INFO] tweaked toml for crates.io crate fuzzcheck_mutators_derive 0.6.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", 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] c99c551c2c3565d4ddb34db48463f9c9586493ec4c94872a37951f6fde76a4fb
[INFO] running `Command { std: "docker" "start" "-a" "c99c551c2c3565d4ddb34db48463f9c9586493ec4c94872a37951f6fde76a4fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c99c551c2c3565d4ddb34db48463f9c9586493ec4c94872a37951f6fde76a4fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c99c551c2c3565d4ddb34db48463f9c9586493ec4c94872a37951f6fde76a4fb", kill_on_drop: false }`
[INFO] [stdout] c99c551c2c3565d4ddb34db48463f9c9586493ec4c94872a37951f6fde76a4fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be1ab7ea3e6c218aa722e69f17ad55ef0e7b3cee714d7c80741029a535a22cee
[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" "be1ab7ea3e6c218aa722e69f17ad55ef0e7b3cee714d7c80741029a535a22cee", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling decent-synquote-alternative v0.3.0
[INFO] [stderr]    Compiling fuzzcheck_mutators_derive v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.72s
[INFO] running `Command { std: "docker" "inspect" "be1ab7ea3e6c218aa722e69f17ad55ef0e7b3cee714d7c80741029a535a22cee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be1ab7ea3e6c218aa722e69f17ad55ef0e7b3cee714d7c80741029a535a22cee", kill_on_drop: false }`
[INFO] [stdout] be1ab7ea3e6c218aa722e69f17ad55ef0e7b3cee714d7c80741029a535a22cee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 537aa20c1297e236af071a6c55755152af9f7b4b20f5a6c4452b12720a10b259
[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" "537aa20c1297e236af071a6c55755152af9f7b4b20f5a6c4452b12720a10b259", kill_on_drop: false }`
[INFO] [stderr]    Compiling fuzzcheck_mutators_derive v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "537aa20c1297e236af071a6c55755152af9f7b4b20f5a6c4452b12720a10b259", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "537aa20c1297e236af071a6c55755152af9f7b4b20f5a6c4452b12720a10b259", kill_on_drop: false }`
[INFO] [stdout] 537aa20c1297e236af071a6c55755152af9f7b4b20f5a6c4452b12720a10b259
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 78e4ea58e7e11cb63c55cb20076b9d58f5a3907540682cf0fb047c97f6439893
[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" "78e4ea58e7e11cb63c55cb20076b9d58f5a3907540682cf0fb047c97f6439893", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fuzzcheck_mutators_derive-8d273426fc56f744)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test enums::test::test_impl_basic_enum_structure ... ok
[INFO] [stdout] test enums::test::test_make_enum_mutator_helper_types ... ok
[INFO] [stdout] test tuples::test::test_declare_tuple_mutator_helper_types ... ok
[INFO] [stdout] test tuples::test::test_impl_default_mutator_for_tuple ... ok
[INFO] [stdout] test tuples::test::test_impl_tuple_structure_trait_generics ... ok
[INFO] [stdout] test enums::test::test_make_enum_n_payload_structure ... ok
[INFO] [stdout] test tuples::test::test_declare_tuple_mutator ... ok
[INFO] [stdout] test enums::test::test_impl_enum_structure_trait_2 ... ok
[INFO] [stdout] test enums::test::test_impl_default_mutator_for_basic_enum ... ok
[INFO] [stdout] test enums::test::test_impl_enum_structure_trait_3 ... ok
[INFO] [stdout] test enums::test::test_impl_enum_structure_trait ... ok
[INFO] [stdout] test enums::test::test_make_enum_n_payload_mutator ... ok
[INFO] [stdout] test tuples::test::test_impl_tuple_structure_trait_one_field_generics ... ok
[INFO] [stdout] test tuples::test::test_make_tuple_type_structure ... ok
[INFO] [stdout] test enums::test::test_impl_mutator ... ok
[INFO] [stdout] test tuples::test::test_impl_mutator_trait ... ok
[INFO] [stdout] test tuples::test::test_impl_default_mutator_two_fields ... ok
[INFO] [stdout] test enums::test::test_impl_default_mutator_for_enum ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fuzzcheck_mutators_derive
[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] running `Command { std: "docker" "inspect" "78e4ea58e7e11cb63c55cb20076b9d58f5a3907540682cf0fb047c97f6439893", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78e4ea58e7e11cb63c55cb20076b9d58f5a3907540682cf0fb047c97f6439893", kill_on_drop: false }`
[INFO] [stdout] 78e4ea58e7e11cb63c55cb20076b9d58f5a3907540682cf0fb047c97f6439893