[INFO] fetching crate kf-protocol-core 0.1.2...
[INFO] testing kf-protocol-core-0.1.2 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate kf-protocol-core 0.1.2 into /workspace/builds/worker-57/source
[INFO] validating manifest of crates.io crate kf-protocol-core 0.1.2 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 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-57/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c95950697b21af55594a7968e70c35ba36b59f21a29ce6e53b93636fb65c6770
[INFO] running `Command { std: "docker" "start" "-a" "c95950697b21af55594a7968e70c35ba36b59f21a29ce6e53b93636fb65c6770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c95950697b21af55594a7968e70c35ba36b59f21a29ce6e53b93636fb65c6770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c95950697b21af55594a7968e70c35ba36b59f21a29ce6e53b93636fb65c6770", kill_on_drop: false }`
[INFO] [stdout] c95950697b21af55594a7968e70c35ba36b59f21a29ce6e53b93636fb65c6770
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef56c766dca4631ebc45b8c763115aec99bab3e4be326f7cae956fae4a5216c0
[INFO] running `Command { std: "docker" "start" "-a" "ef56c766dca4631ebc45b8c763115aec99bab3e4be326f7cae956fae4a5216c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling serde_derive v1.0.130
[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 18.15s
[INFO] running `Command { std: "docker" "inspect" "ef56c766dca4631ebc45b8c763115aec99bab3e4be326f7cae956fae4a5216c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef56c766dca4631ebc45b8c763115aec99bab3e4be326f7cae956fae4a5216c0", kill_on_drop: false }`
[INFO] [stdout] ef56c766dca4631ebc45b8c763115aec99bab3e4be326f7cae956fae4a5216c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7fb4e9980f234394d5c638713af1fa2295bea229303840bae1fc1c35fb632ce
[INFO] running `Command { std: "docker" "start" "-a" "f7fb4e9980f234394d5c638713af1fa2295bea229303840bae1fc1c35fb632ce", 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 1.56s
[INFO] running `Command { std: "docker" "inspect" "f7fb4e9980f234394d5c638713af1fa2295bea229303840bae1fc1c35fb632ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7fb4e9980f234394d5c638713af1fa2295bea229303840bae1fc1c35fb632ce", kill_on_drop: false }`
[INFO] [stdout] f7fb4e9980f234394d5c638713af1fa2295bea229303840bae1fc1c35fb632ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a14da84d352ccbce813a31d963ffbb27e5ecf8eaa2e62642907221c09727e6be
[INFO] running `Command { std: "docker" "start" "-a" "a14da84d352ccbce813a31d963ffbb27e5ecf8eaa2e62642907221c09727e6be", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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: `kf-protocol-core` (lib) generated 1 warning
[INFO] [stderr] warning: `kf-protocol-core` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/kf_protocol_core-c515febaa3e60f7f)
[INFO] [stdout] 
[INFO] [stdout] running 51 tests
[INFO] [stdout] test decoder::test::test_decode_bool ... ok
[INFO] [stdout] test decoder::test::test_decode_i16 ... ok
[INFO] [stdout] test decoder::test::test_decode_bool_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_bool_invalid_value ... 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_i32_2 ... ok
[INFO] [stdout] test decoder::test::test_decode_i32_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_i32 ... ok
[INFO] [stdout] test decoder::test::test_decode_u16 ... ok
[INFO] [stdout] test decoder::test::test_decode_string ... 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_i64 ... ok
[INFO] [stdout] test decoder::test::test_decode_option_u16_val ... ok
[INFO] [stdout] test decoder::test::test_decode_i8 ... ok
[INFO] [stdout] test decoder::test::test_decode_invalid_string_not_len ... ok
[INFO] [stdout] test decoder::test::test_decode_invalid_string ... ok
[INFO] [stdout] test decoder::test::test_decode_option_u16_none ... ok
[INFO] [stdout] test decoder::test::test_decode_null_option_string ... ok
[INFO] [stdout] test decoder::test::test_decode_i64_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_u16_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_u18_not_enough ... ok
[INFO] [stdout] test decoder::test::test_decode_u8 ... ok
[INFO] [stdout] test decoder::test::test_decode_varint_array_option_vec8_null ... ok
[INFO] [stdout] test decoder::test::test_decode_valid_string_vectors ... ok
[INFO] [stdout] test decoder::test::test_decoding_struct ... ok
[INFO] [stdout] test decoder::test::test_decode_varint_vec8 ... ok
[INFO] [stdout] test decoder::test::test_decode_varint_trait ... ok
[INFO] [stdout] test decoder::test::test_decode_varint_vec8_fail ... ok
[INFO] [stdout] test encoder::test::test_encode_i16 ... 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_string_vectors ... ok
[INFO] [stdout] test encoder::test::test_encode_u16 ... ok
[INFO] [stdout] test encoder::test::test_encode_string_option_none ... ok
[INFO] [stdout] test encoder::test::test_encode_i32 ... ok
[INFO] [stdout] test encoder::test::test_encode_string_option_some ... ok
[INFO] [stdout] test decoder::test::test_varint_decode_array_opton_vec8_simple_array ... ok
[INFO] [stdout] test encoder::test::test_encode_string ... ok
[INFO] [stdout] test encoder::test::test_encode_i8 ... ok
[INFO] [stdout] test encoder::test::test_encode_bool ... ok
[INFO] [stdout] test encoder::test::test_encode_u8 ... ok
[INFO] [stdout] test encoder::test::test_encode_u8_vectors ... 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 zerocopy::test::test_zero_copy ... ok
[INFO] [stdout] test varint::test::test_varint_decode_with_test_set ... ok
[INFO] [stdout] test encoder::test::test_encoding_struct ... ok
[INFO] [stdout] test varint::test::test_varint_encode_with_test_set ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 51 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.18s
[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" "a14da84d352ccbce813a31d963ffbb27e5ecf8eaa2e62642907221c09727e6be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a14da84d352ccbce813a31d963ffbb27e5ecf8eaa2e62642907221c09727e6be", kill_on_drop: false }`
[INFO] [stdout] a14da84d352ccbce813a31d963ffbb27e5ecf8eaa2e62642907221c09727e6be