[INFO] fetching crate serde_prometheus 0.2.9...
[INFO] testing serde_prometheus-0.2.9 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate serde_prometheus 0.2.9 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate serde_prometheus 0.2.9
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate serde_prometheus 0.2.9
[INFO] tweaked toml for crates.io crate serde_prometheus 0.2.9 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde_prometheus 0.2.9 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate serde_prometheus 0.2.9 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7d52725bd0c1d5b3a9ce8b4bca628a68a7857e41b650ae98eac5840bb0c8f3f
[INFO] running `Command { std: "docker" "start" "-a" "b7d52725bd0c1d5b3a9ce8b4bca628a68a7857e41b650ae98eac5840bb0c8f3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7d52725bd0c1d5b3a9ce8b4bca628a68a7857e41b650ae98eac5840bb0c8f3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7d52725bd0c1d5b3a9ce8b4bca628a68a7857e41b650ae98eac5840bb0c8f3f", kill_on_drop: false }`
[INFO] [stdout] b7d52725bd0c1d5b3a9ce8b4bca628a68a7857e41b650ae98eac5840bb0c8f3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b518e11343a9ceb861ead0c534c508198bd36edfdfb3da13273fd29c86ebf187
[INFO] running `Command { std: "docker" "start" "-a" "b518e11343a9ceb861ead0c534c508198bd36edfdfb3da13273fd29c86ebf187", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.91
[INFO] [stderr]    Compiling serde v1.0.215
[INFO] [stderr]    Compiling thiserror v2.0.10
[INFO] [stderr]    Compiling triomphe v0.1.14
[INFO] [stderr]    Compiling itoa v1.0.13
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling archery v1.2.1
[INFO] [stderr]    Compiling rpds v1.1.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.89
[INFO] [stderr]    Compiling thiserror-impl v2.0.10
[INFO] [stderr]    Compiling serde_prometheus v0.2.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.29s
[INFO] running `Command { std: "docker" "inspect" "b518e11343a9ceb861ead0c534c508198bd36edfdfb3da13273fd29c86ebf187", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b518e11343a9ceb861ead0c534c508198bd36edfdfb3da13273fd29c86ebf187", kill_on_drop: false }`
[INFO] [stdout] b518e11343a9ceb861ead0c534c508198bd36edfdfb3da13273fd29c86ebf187
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b74dfb4dbc35a39955993f9f28b18f47023e9b783e04e412d2d7cc993baa95b
[INFO] running `Command { std: "docker" "start" "-a" "3b74dfb4dbc35a39955993f9f28b18f47023e9b783e04e412d2d7cc993baa95b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.91
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling libc v0.2.164
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling serde v1.0.215
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling serde_json v1.0.133
[INFO] [stderr]    Compiling auto_enums_derive v0.7.12
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling miniz_oxide v0.8.0
[INFO] [stderr]    Compiling half v2.4.1
[INFO] [stderr]    Compiling clap_lex v0.7.3
[INFO] [stderr]    Compiling plotters-backend v0.3.7
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling hash32 v0.3.1
[INFO] [stderr]    Compiling clap_builder v4.5.21
[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling similar v2.6.0
[INFO] [stderr]    Compiling oorandom v11.1.4
[INFO] [stderr]    Compiling bytes v1.8.0
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stderr]    Compiling flate2 v1.0.35
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-channel v0.5.13
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling syn v2.0.89
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling is-terminal v0.4.13
[INFO] [stderr]    Compiling mio v1.0.2
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling console v0.15.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling hdrhistogram v7.5.4
[INFO] [stderr]    Compiling insta v1.41.1
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling clap v4.5.21
[INFO] [stderr]    Compiling derive_utils v0.11.2
[INFO] [stderr]    Compiling auto_enums_core v0.7.12
[INFO] [stderr]    Compiling serde_derive v1.0.215
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling thiserror-impl v2.0.10
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling auto_enums v0.7.12
[INFO] [stderr]    Compiling tokio v1.41.1
[INFO] [stderr]    Compiling synattra v0.2.1
[INFO] [stderr]    Compiling aspect-weave v0.2.1
[INFO] [stderr]    Compiling aspect v0.3.0
[INFO] [stderr]    Compiling metered-macro v0.9.0
[INFO] [stderr]    Compiling thiserror v2.0.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling metered v0.9.0
[INFO] [stderr]    Compiling serde_prometheus v0.2.9 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 37.79s
[INFO] running `Command { std: "docker" "inspect" "3b74dfb4dbc35a39955993f9f28b18f47023e9b783e04e412d2d7cc993baa95b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b74dfb4dbc35a39955993f9f28b18f47023e9b783e04e412d2d7cc993baa95b", kill_on_drop: false }`
[INFO] [stdout] 3b74dfb4dbc35a39955993f9f28b18f47023e9b783e04e412d2d7cc993baa95b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b201c5557d92c26ee4766958b6fb50f3fe685da7437bd683259a3e12fe81b89d
[INFO] running `Command { std: "docker" "start" "-a" "b201c5557d92c26ee4766958b6fb50f3fe685da7437bd683259a3e12fe81b89d", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/serde_prometheus-bc36b1dbda8ab693)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde_prometheus
[INFO] [stdout] running 32 tests
[INFO] [stdout] test modifiers::test::label_stack::escape ... ok
[INFO] [stdout] test modifiers::test::label_stack::display ... ok
[INFO] [stdout] test modifiers::test::label_stack_with_path::both_empty ... ok
[INFO] [stdout] test modifiers::test::parse_modifiers_string::empty ... ok
[INFO] [stdout] test modifiers::test::label_stack_with_path::empty_path ... ok
[INFO] [stdout] test modifiers::test::parse_modifiers_string::fixed_modifiers_with_internal ... ok
[INFO] [stdout] test modifiers::test::label_stack_with_path::both_set ... ok
[INFO] [stdout] test modifiers::test::label_stack_with_path::empty_label ... ok
[INFO] [stdout] test modifiers::test::parse_modifiers_string::empty_modifiers_with_internal ... ok
[INFO] [stdout] test modifiers::test::parse_modifiers_string::key_and_labels ... ok
[INFO] [stdout] test modifiers::test::parse_modifiers_string::internal_modifiers ... ok
[INFO] [stdout] test modifiers::test::parse_modifiers_string::modifiers_with_internal ... ok
[INFO] [stdout] test modifiers::test::parse_modifiers_string::only_keys ... ok
[INFO] [stdout] test modifiers::test::parse_modifiers_string::only_labels ... ok
[INFO] [stdout] test modifiers::test::parse_modifiers_string::quoted_labels ... ok
[INFO] [stdout] test modifiers::test::parse_modifiers_string::struct_name ... ok
[INFO] [stdout] test modifiers::test::parse_modifiers_string::test_invalid_modifier_key ... ok
[INFO] [stdout] test modifiers::test::parse_modifiers_string::test_invalid_modifier_label ... ok
[INFO] [stdout] test modifiers::test::path_stack::display ... ok
[INFO] [stdout] test modifiers::test::parse_modifiers_string::unknown_internal_modifiers ... ok
[INFO] [stdout] test test::compat::ensure_skips_lazy_evaluated_for_01_compat ... ok
[INFO] [stdout] test test::serializer::basic ... ok
[INFO] [stdout] test test::serializer::skip_key_modification ... ok
[INFO] [stdout] test modifiers::test::get_value_from_path_for_modifiers::skip ... ok
[INFO] [stdout] test test::fake_nested_metrics ... ok
[INFO] [stdout] test test::namespace::override_works ... ok
[INFO] [stdout] test test::metered_integ::normal_registry ... ok
[INFO] [stdout] test test::tuple_unpacking ... ok
[INFO] [stdout] test test::serializer::overflows_labels ... ok
[INFO] [stdout] test test::serializer::geoip ... ok
[INFO] [stdout] test modifiers::test::parse_modifiers_string::only_keys_no_separator - should panic ... ok
[INFO] [stdout] test test::metered_integ::wrapped_registry ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 32 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.09s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - (line 158) ... ok
[INFO] [stdout] test src/lib.rs - (line 16) ... ok
[INFO] [stdout] test src/lib.rs - (line 235) ... ok
[INFO] [stdout] test src/lib.rs - (line 93) ... ok
[INFO] [stdout] test src/lib.rs - (line 53) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.94s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b201c5557d92c26ee4766958b6fb50f3fe685da7437bd683259a3e12fe81b89d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b201c5557d92c26ee4766958b6fb50f3fe685da7437bd683259a3e12fe81b89d", kill_on_drop: false }`
[INFO] [stdout] b201c5557d92c26ee4766958b6fb50f3fe685da7437bd683259a3e12fe81b89d