[INFO] fetching crate kf-protocol-core 0.1.2...
[INFO] testing kf-protocol-core-0.1.2 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate kf-protocol-core 0.1.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate kf-protocol-core 0.1.2 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kf-protocol-core 0.1.2
[INFO] finished tweaking crates.io crate kf-protocol-core 0.1.2
[INFO] tweaked toml for crates.io crate kf-protocol-core 0.1.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65d73c02c759acbecd9e55da5c232e3323956780fff1dbe85a346c6eddfc07e4
[INFO] running `Command { std: "docker" "start" "-a" "65d73c02c759acbecd9e55da5c232e3323956780fff1dbe85a346c6eddfc07e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65d73c02c759acbecd9e55da5c232e3323956780fff1dbe85a346c6eddfc07e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65d73c02c759acbecd9e55da5c232e3323956780fff1dbe85a346c6eddfc07e4", kill_on_drop: false }`
[INFO] [stdout] 65d73c02c759acbecd9e55da5c232e3323956780fff1dbe85a346c6eddfc07e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5560826f74f04e2745939788e80c75aed8fdb228d6e07872f61237ce7daeb33b
[INFO] running `Command { std: "docker" "start" "-a" "5560826f74f04e2745939788e80c75aed8fdb228d6e07872f61237ce7daeb33b", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling kf-protocol-core v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(specialization)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]   = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.69s
[INFO] running `Command { std: "docker" "inspect" "5560826f74f04e2745939788e80c75aed8fdb228d6e07872f61237ce7daeb33b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5560826f74f04e2745939788e80c75aed8fdb228d6e07872f61237ce7daeb33b", kill_on_drop: false }`
[INFO] [stdout] 5560826f74f04e2745939788e80c75aed8fdb228d6e07872f61237ce7daeb33b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea57dc6c22b21d723602509b1c7fb2d1dc34e37ab4fca947f79dff68c09e4ce9
[INFO] running `Command { std: "docker" "start" "-a" "ea57dc6c22b21d723602509b1c7fb2d1dc34e37ab4fca947f79dff68c09e4ce9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling kf-protocol-core v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(specialization)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]   = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(specialization)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]   = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "ea57dc6c22b21d723602509b1c7fb2d1dc34e37ab4fca947f79dff68c09e4ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea57dc6c22b21d723602509b1c7fb2d1dc34e37ab4fca947f79dff68c09e4ce9", kill_on_drop: false }`
[INFO] [stdout] ea57dc6c22b21d723602509b1c7fb2d1dc34e37ab4fca947f79dff68c09e4ce9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e80b7eace854aeed2b837398ea44b26103ca68d889e41c29fee9127b1add2d73
[INFO] running `Command { std: "docker" "start" "-a" "e80b7eace854aeed2b837398ea44b26103ca68d889e41c29fee9127b1add2d73", kill_on_drop: false }`
[INFO] [stderr] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(specialization)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stderr]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stderr]   = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(specialization)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stderr]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stderr]   = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/kf_protocol_core-474569831022f7a5)
[INFO] [stdout] 
[INFO] [stdout] running 51 tests
[INFO] [stdout] test decoder::test::test_decode_bool ... ok
[INFO] [stdout] test decoder::test::test_decode_i16_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_i18_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_i64 ... ok
[INFO] [stdout] test decoder::test::test_decode_i64_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_i32_2 ... ok
[INFO] [stdout] test decoder::test::test_decode_invalid_string ... ok
[INFO] [stdout] test decoder::test::test_decode_null_option_string ... ok
[INFO] [stdout] test decoder::test::test_decode_option_u16_none ... ok
[INFO] [stdout] test decoder::test::test_decode_invalid_string_not_len ... ok
[INFO] [stdout] test decoder::test::test_decode_option_u16_val ... ok
[INFO] [stdout] test decoder::test::test_decode_some_option_string ... ok
[INFO] [stdout] test decoder::test::test_decode_string_existing_value ... ok
[INFO] [stdout] test decoder::test::test_decode_u16 ... ok
[INFO] [stdout] test decoder::test::test_decode_u18_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_u16_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_bool_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_u8 ... ok
[INFO] [stdout] test decoder::test::test_decode_i32 ... ok
[INFO] [stdout] test decoder::test::test_decode_valid_string_vectors ... ok
[INFO] [stdout] test decoder::test::test_decode_i8 ... ok
[INFO] [stdout] test decoder::test::test_decode_varint_array_option_vec8_null ... ok
[INFO] [stdout] test decoder::test::test_decode_varint_trait ... ok
[INFO] [stdout] test decoder::test::test_decoding_struct ... ok
[INFO] [stdout] test decoder::test::test_decode_varint_vec8_fail ... ok
[INFO] [stdout] test decoder::test::test_decode_varint_vec8 ... ok
[INFO] [stdout] test decoder::test::test_varint_decode_array_opton_vec8_simple_array ... ok
[INFO] [stdout] test decoder::test::test_decode_string ... ok
[INFO] [stdout] test encoder::test::test_encode_bool ... ok
[INFO] [stdout] test encoder::test::test_encode_option_u16_none ... ok
[INFO] [stdout] test encoder::test::test_encode_i32 ... ok
[INFO] [stdout] test encoder::test::test_encode_i64 ... ok
[INFO] [stdout] test encoder::test::test_encode_i16 ... ok
[INFO] [stdout] test encoder::test::test_varint_encode_array_opton_vec8_simple_array ... ok
[INFO] [stdout] test varint::test::test_varint_decode_with_test_set ... ok
[INFO] [stdout] test encoder::test::test_encode_i8 ... ok
[INFO] [stdout] test zerocopy::test::test_zero_copy ... ok
[INFO] [stdout] test encoder::test::test_encode_option_u16_with_val ... ok
[INFO] [stdout] test encoder::test::test_encode_string ... ok
[INFO] [stdout] test encoder::test::test_encode_string_option_none ... ok
[INFO] [stdout] test encoder::test::test_encode_string_option_some ... ok
[INFO] [stdout] test encoder::test::test_encode_u8_vectors ... ok
[INFO] [stdout] test encoder::test::test_encoding_struct ... ok
[INFO] [stdout] test varint::test::test_varint_encode_with_test_set ... ok
[INFO] [stdout] test decoder::test::test_decode_bool_invalid_value ... ok
[INFO] [stdout] test decoder::test::test_decode_i16 ... ok
[INFO] [stdout] test encoder::test::test_varint_encode_array_opton_vec8_none ... ok
[INFO] [stdout] test encoder::test::test_encode_string_vectors ... ok
[INFO] [stdout] test encoder::test::test_encode_u8 ... ok
[INFO] [stdout] test decoder::test::test_decode_i32_not_enough ... ok
[INFO] [stdout] test encoder::test::test_encode_u16 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 51 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests kf-protocol-core
[INFO] [stderr] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stderr]  --> /opt/rustwide/workdir/src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(specialization)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stderr]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stderr]   = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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" "e80b7eace854aeed2b837398ea44b26103ca68d889e41c29fee9127b1add2d73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e80b7eace854aeed2b837398ea44b26103ca68d889e41c29fee9127b1add2d73", kill_on_drop: false }`
[INFO] [stdout] e80b7eace854aeed2b837398ea44b26103ca68d889e41c29fee9127b1add2d73