[INFO] fetching crate kf-protocol-core 0.1.2...
[INFO] testing kf-protocol-core-0.1.2 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate kf-protocol-core 0.1.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate kf-protocol-core 0.1.2 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "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-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8069e1e3d69e8e0622f29b15a447b9207c00b62b80a3ed8e0c6f00350614c7c
[INFO] running `Command { std: "docker" "start" "-a" "d8069e1e3d69e8e0622f29b15a447b9207c00b62b80a3ed8e0c6f00350614c7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8069e1e3d69e8e0622f29b15a447b9207c00b62b80a3ed8e0c6f00350614c7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8069e1e3d69e8e0622f29b15a447b9207c00b62b80a3ed8e0c6f00350614c7c", kill_on_drop: false }`
[INFO] [stdout] d8069e1e3d69e8e0622f29b15a447b9207c00b62b80a3ed8e0c6f00350614c7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9acbba0c686cdb0b9767ba9b08838dd082651944f6a7b7839399774d7a3aa517
[INFO] running `Command { std: "docker" "start" "-a" "9acbba0c686cdb0b9767ba9b08838dd082651944f6a7b7839399774d7a3aa517", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling num-derive v0.2.5
[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 23.18s
[INFO] running `Command { std: "docker" "inspect" "9acbba0c686cdb0b9767ba9b08838dd082651944f6a7b7839399774d7a3aa517", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9acbba0c686cdb0b9767ba9b08838dd082651944f6a7b7839399774d7a3aa517", kill_on_drop: false }`
[INFO] [stdout] 9acbba0c686cdb0b9767ba9b08838dd082651944f6a7b7839399774d7a3aa517
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8df44e3bb0b0cd85ebda6c374e8c7cf63d78c997a133d6b29776d97eb810f13
[INFO] running `Command { std: "docker" "start" "-a" "e8df44e3bb0b0cd85ebda6c374e8c7cf63d78c997a133d6b29776d97eb810f13", kill_on_drop: false }`
[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 1.60s
[INFO] running `Command { std: "docker" "inspect" "e8df44e3bb0b0cd85ebda6c374e8c7cf63d78c997a133d6b29776d97eb810f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8df44e3bb0b0cd85ebda6c374e8c7cf63d78c997a133d6b29776d97eb810f13", kill_on_drop: false }`
[INFO] [stdout] e8df44e3bb0b0cd85ebda6c374e8c7cf63d78c997a133d6b29776d97eb810f13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b85a1714f032e204888f704c774d41b6913ddb891ea3c682f5416895d2c69956
[INFO] running `Command { std: "docker" "start" "-a" "b85a1714f032e204888f704c774d41b6913ddb891ea3c682f5416895d2c69956", 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 0.04s
[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_bool_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_option_u16_val ... ok
[INFO] [stdout] test decoder::test::test_decode_invalid_string_not_len ... ok
[INFO] [stdout] test decoder::test::test_decode_string_existing_value ... ok
[INFO] [stdout] test decoder::test::test_decode_valid_string_vectors ... ok
[INFO] [stdout] test decoder::test::test_decode_string ... ok
[INFO] [stdout] test decoder::test::test_decode_u16_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_i8 ... 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 encoder::test::test_encode_bool ... ok
[INFO] [stdout] test encoder::test::test_encode_i16 ... 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_option_u16_none ... ok
[INFO] [stdout] test encoder::test::test_encode_option_u16_with_val ... ok
[INFO] [stdout] test encoder::test::test_encode_i8 ... ok
[INFO] [stdout] test encoder::test::test_encode_string_option_none ... ok
[INFO] [stdout] test encoder::test::test_encode_string ... ok
[INFO] [stdout] test encoder::test::test_encode_string_option_some ... ok
[INFO] [stdout] test decoder::test::test_decode_i16 ... ok
[INFO] [stdout] test decoder::test::test_decode_invalid_string ... ok
[INFO] [stdout] test encoder::test::test_encode_string_vectors ... ok
[INFO] [stdout] test encoder::test::test_encode_u16 ... 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 encoder::test::test_encode_u8 ... ok
[INFO] [stdout] test encoder::test::test_encoding_struct ... ok
[INFO] [stdout] test decoder::test::test_decode_i32 ... ok
[INFO] [stdout] test encoder::test::test_varint_encode_array_opton_vec8_none ... 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 varint::test::test_varint_encode_with_test_set ... ok
[INFO] [stdout] test encoder::test::test_encode_u8_vectors ... ok
[INFO] [stdout] test zerocopy::test::test_zero_copy ... ok
[INFO] [stdout] test decoder::test::test_decode_null_option_string ... ok
[INFO] [stdout] test decoder::test::test_decode_i64 ... ok
[INFO] [stdout] test decoder::test::test_decode_i32_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_bool_invalid_value ... ok
[INFO] [stdout] test decoder::test::test_decode_u8 ... ok
[INFO] [stdout] test decoder::test::test_decode_option_u16_none ... ok
[INFO] [stdout] test decoder::test::test_decode_u16 ... ok
[INFO] [stdout] test decoder::test::test_decode_varint_array_option_vec8_null ... ok
[INFO] [stdout] test decoder::test::test_decode_i16_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_some_option_string ... ok
[INFO] [stdout] test decoder::test::test_decoding_struct ... ok
[INFO] [stdout] test decoder::test::test_decode_u18_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_varint_trait ... ok
[INFO] [stdout] test decoder::test::test_decode_i18_not_enough ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 51 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[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" "b85a1714f032e204888f704c774d41b6913ddb891ea3c682f5416895d2c69956", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b85a1714f032e204888f704c774d41b6913ddb891ea3c682f5416895d2c69956", kill_on_drop: false }`
[INFO] [stdout] b85a1714f032e204888f704c774d41b6913ddb891ea3c682f5416895d2c69956