[INFO] fetching crate serde_ub_json 0.1.0...
[INFO] testing serde_ub_json-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate serde_ub_json 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate serde_ub_json 0.1.0
[INFO] finished tweaking crates.io crate serde_ub_json 0.1.0
[INFO] tweaked toml for crates.io crate serde_ub_json 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde_ub_json 0.1.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 63 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.8.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d7528f7dd434cf2fbfbdbb48f30ba4d73c9e01d58c41d8620d1283840df9784
[INFO] running `Command { std: "docker" "start" "-a" "0d7528f7dd434cf2fbfbdbb48f30ba4d73c9e01d58c41d8620d1283840df9784", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d7528f7dd434cf2fbfbdbb48f30ba4d73c9e01d58c41d8620d1283840df9784", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d7528f7dd434cf2fbfbdbb48f30ba4d73c9e01d58c41d8620d1283840df9784", kill_on_drop: false }`
[INFO] [stdout] 0d7528f7dd434cf2fbfbdbb48f30ba4d73c9e01d58c41d8620d1283840df9784
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad2a74f786ec886e797708f415dc6adc1f89f5dcc940b7cb5ee211e083d1cd33
[INFO] running `Command { std: "docker" "start" "-a" "ad2a74f786ec886e797708f415dc6adc1f89f5dcc940b7cb5ee211e083d1cd33", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_ub_json v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.95s
[INFO] running `Command { std: "docker" "inspect" "ad2a74f786ec886e797708f415dc6adc1f89f5dcc940b7cb5ee211e083d1cd33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad2a74f786ec886e797708f415dc6adc1f89f5dcc940b7cb5ee211e083d1cd33", kill_on_drop: false }`
[INFO] [stdout] ad2a74f786ec886e797708f415dc6adc1f89f5dcc940b7cb5ee211e083d1cd33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b469e23f20dc3f1824e7b093f94ac50d8a0559f9032238b143659fe8321086b
[INFO] running `Command { std: "docker" "start" "-a" "0b469e23f20dc3f1824e7b093f94ac50d8a0559f9032238b143659fe8321086b", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling plotters-backend v0.3.7
[INFO] [stderr]    Compiling csv-core v0.1.13
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling half v1.8.3
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling ryu v1.0.23
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling oorandom v11.1.5
[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling rayon v1.12.0
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling criterion-plot v0.4.5
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling csv v1.4.0
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling serde_ub_json v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.3.6
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/ser.rs:713:33
[INFO] [stdout]     |
[INFO] [stdout] 713 |             vec![b'i', unsafe { transmute::<i8, u8>(value.to_be()) }]
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 713 -             vec![b'i', unsafe { transmute::<i8, u8>(value.to_be()) }]
[INFO] [stdout] 713 +             vec![b'i', unsafe { i8::cast_unsigned(value.to_be()) }]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 17.79s
[INFO] running `Command { std: "docker" "inspect" "0b469e23f20dc3f1824e7b093f94ac50d8a0559f9032238b143659fe8321086b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b469e23f20dc3f1824e7b093f94ac50d8a0559f9032238b143659fe8321086b", kill_on_drop: false }`
[INFO] [stdout] 0b469e23f20dc3f1824e7b093f94ac50d8a0559f9032238b143659fe8321086b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 428d0ac256908cb126c06a24c2af4442496a398192d343d599acef4231d7a984
[INFO] running `Command { std: "docker" "start" "-a" "428d0ac256908cb126c06a24c2af4442496a398192d343d599acef4231d7a984", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary transmute
[INFO] [stderr]    --> src/ser.rs:713:33
[INFO] [stderr]     |
[INFO] [stderr] 713 |             vec![b'i', unsafe { transmute::<i8, u8>(value.to_be()) }]
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stderr] help: replace this with
[INFO] [stderr]     |
[INFO] [stderr] 713 -             vec![b'i', unsafe { transmute::<i8, u8>(value.to_be()) }]
[INFO] [stderr] 713 +             vec![b'i', unsafe { i8::cast_unsigned(value.to_be()) }]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `serde_ub_json` (lib test) generated 1 warning (run `cargo fix --lib -p serde_ub_json --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/serde_ub_json-aed11168963e28a4)
[INFO] [stdout] 
[INFO] [stdout] running 72 tests
[INFO] [stdout] test de::tests::deserializing_big_c_value_can_produce_str ... ok
[INFO] [stdout] test de::tests::deserializing_big_c_value_can_produce_string ... ok
[INFO] [stdout] test de::tests::deserializing_big_c_value_can_produce_char ... ok
[INFO] [stdout] test de::tests::deserializing_big_i_value_can_produce_i32 ... ok
[INFO] [stdout] test de::tests::deserializing_big_d_value_can_produce_f64 ... ok
[INFO] [stdout] test de::tests::deserializing_big_i_value_can_produce_i64 ... ok
[INFO] [stdout] test de::tests::deserializing_big_f_value_can_produce_false ... ok
[INFO] [stdout] test de::tests::deserializing_big_l_value_can_produce_i64 ... ok
[INFO] [stdout] test de::tests::deserializing_big_i_value_can_produce_i16 ... ok
[INFO] [stdout] test de::tests::deserializing_big_s_value_of_big_i_len_can_produce_string ... ok
[INFO] [stdout] test de::tests::deserializing_big_s_value_of_big_l_len_can_produce_str ... ok
[INFO] [stdout] test de::tests::deserializing_big_s_value_of_big_i_len_can_produce_str ... ok
[INFO] [stdout] test de::tests::deserializing_big_s_value_of_small_i_len_can_produce_some_string ... ok
[INFO] [stdout] test de::tests::deserializing_big_s_value_of_small_i_len_can_produce_str ... ok
[INFO] [stdout] test de::tests::deserializing_big_s_value_of_small_i_len_can_produce_char ... ok
[INFO] [stdout] test de::tests::deserializing_big_s_value_of_small_i_len_can_produce_string ... ok
[INFO] [stdout] test de::tests::deserializing_big_s_value_of_small_l_len_can_produce_str ... ok
[INFO] [stdout] test de::tests::deserializing_big_s_value_of_big_l_len_can_produce_string ... ok
[INFO] [stdout] test de::tests::deserializing_big_s_value_of_small_l_len_can_produce_string ... ok
[INFO] [stdout] test de::tests::deserializing_big_z_value_can_produce_unit ... ok
[INFO] [stdout] test de::tests::deserializing_big_z_value_can_produce_none ... ok
[INFO] [stdout] test de::tests::deserializing_open_and_close_brace_can_produce_empty_map ... ok
[INFO] [stdout] test de::tests::deserializing_open_brace_with_1_value_can_produce_tuple_variant_of_enum ... ok
[INFO] [stdout] test de::tests::deserializing_open_and_close_brace_with_1_value_can_produce_struct_variant_of_enum ... ok
[INFO] [stdout] test de::tests::deserializing_open_and_close_bracket_with_strings_of_i_len_can_produce_vec ... ok
[INFO] [stdout] test de::tests::deserializing_open_and_close_brace_with_strings_of_i_len_can_produce_map ... ok
[INFO] [stdout] test de::tests::deserializing_open_and_close_brace_with_mixed_values_can_produce_struct ... ok
[INFO] [stdout] test de::tests::deserializing_open_and_close_bracket_can_produce_empty_vec ... ok
[INFO] [stdout] test de::tests::deserializing_open_and_close_bracket_with_small_i_values_can_produce_vec ... ok
[INFO] [stdout] test de::tests::deserializing_open_and_close_brace_with_small_i_values_can_produce_map ... ok
[INFO] [stdout] test de::tests::deserializing_open_brace_with_1_value_can_produce_newtype_variant_of_enum ... ok
[INFO] [stdout] test de::tests::deserializing_open_and_close_brace_with_1_value_can_produce_tuple_variant_of_enum ... ok
[INFO] [stdout] test de::tests::deserializing_open_and_close_brace_with_1_value_can_produce_newtype_variant_of_enum ... ok
[INFO] [stdout] test de::tests::deserializing_big_t_value_can_produce_true ... ok
[INFO] [stdout] test de::tests::deserializing_open_brace_with_length_of_0_can_produce_empty_map ... ok
[INFO] [stdout] test de::tests::deserializing_open_brace_with_small_i_values_and_length_of_i_can_produce_map ... ok
[INFO] [stdout] test de::tests::deserializing_open_brace_with_string_values_and_length_of_i_can_produce_map ... ok
[INFO] [stdout] test de::tests::deserializing_open_brace_with_string_values_of_type_big_s_and_of_len_i_can_produce_map ... ok
[INFO] [stdout] test de::tests::deserializing_open_brace_with_uniform_values_of_len_i_can_produce_struct ... ok
[INFO] [stdout] test de::tests::deserializing_open_bracket_with_small_i_values_and_length_of_i_can_produce_vec ... ok
[INFO] [stdout] test de::tests::deserializing_open_brace_with_small_i_values_of_type_i_and_of_len_i_can_produce_map ... ok
[INFO] [stdout] test de::tests::deserializing_small_d_value_can_produce_f64 ... ok
[INFO] [stdout] test de::tests::deserializing_small_i_value_can_produce_i16 ... ok
[INFO] [stdout] test de::tests::deserializing_small_i_value_can_produce_i32 ... ok
[INFO] [stdout] test de::tests::deserializing_open_bracket_with_big_u_values_of_len_i_can_produce_byte_slice ... ok
[INFO] [stdout] test de::tests::deserializing_small_l_value_can_produce_i32 ... ok
[INFO] [stdout] test de::tests::deserializing_small_i_value_can_produce_i8 ... ok
[INFO] [stdout] test ser::tests::serializing_f64_produces_9_byte_big_d_value ... ok
[INFO] [stdout] test de::tests::deserializing_open_bracket_with_length_of_0_can_produce_empty_vec ... ok
[INFO] [stdout] test de::tests::deserializing_open_bracket_with_small_i_values_of_type_i_and_of_len_i_can_produce_vec ... ok
[INFO] [stdout] test de::tests::deserializing_small_i_value_can_produce_i64 ... ok
[INFO] [stdout] test de::tests::deserializing_open_bracket_with_string_values_and_length_of_i_can_produce_vec ... ok
[INFO] [stdout] test de::tests::deserializing_small_d_value_can_produce_f32 ... ok
[INFO] [stdout] test ser::tests::serializing_f32_produces_5_byte_small_d_value ... ok
[INFO] [stdout] test de::tests::deserializing_open_bracket_with_string_values_of_type_big_s_and_of_len_i_can_produce_vec ... ok
[INFO] [stdout] test ser::tests::serializing_false_produces_1_byte_big_f_value ... ok
[INFO] [stdout] test de::tests::deserializing_small_l_value_can_produce_i64 ... ok
[INFO] [stdout] test ser::tests::serializing_i16_produces_3_byte_big_i_value ... ok
[INFO] [stdout] test ser::tests::serializing_i32_produces_5_byte_small_l_value ... ok
[INFO] [stdout] test de::tests::deserializing_open_brace_with_1_value_can_produce_struct_variant_of_enum ... ok
[INFO] [stdout] test ser::tests::serializing_i64_produces_9_byte_big_l_value ... ok
[INFO] [stdout] test ser::tests::serializing_i8_produces_2_byte_small_i_value ... ok
[INFO] [stdout] test ser::tests::serializing_map_of_not_string_to_any_produces_error ... ok
[INFO] [stdout] test ser::tests::serializing_none_produces_big_z_string_value ... ok
[INFO] [stderr]    Doc-tests serde_ub_json
[INFO] [stdout] test ser::tests::serializing_simple_struct_produces_object_value ... ok
[INFO] [stdout] test ser::tests::serializing_str_produces_big_l_string_value ... ok
[INFO] [stdout] test ser::tests::serializing_true_produces_1_byte_big_t_value ... ok
[INFO] [stdout] test ser::tests::serializing_u8_produces_2_byte_big_u_value ... ok
[INFO] [stdout] test ser::tests::serializing_unit_produces_big_n_string_value ... ok
[INFO] [stdout] test ser::tests::serializing_vec_of_bytes_produces_array_value ... ok
[INFO] [stdout] test ser::tests::serializing_map_of_strings_to_i32_produces_object_value ... ok
[INFO] [stdout] test ser::tests::serializing_vec_of_strings_produces_array_value ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 72 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[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" "428d0ac256908cb126c06a24c2af4442496a398192d343d599acef4231d7a984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "428d0ac256908cb126c06a24c2af4442496a398192d343d599acef4231d7a984", kill_on_drop: false }`
[INFO] [stdout] 428d0ac256908cb126c06a24c2af4442496a398192d343d599acef4231d7a984
