[INFO] fetching crate serde_prometheus_labels 0.2.0...
[INFO] testing serde_prometheus_labels-0.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate serde_prometheus_labels 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate serde_prometheus_labels 0.2.0
[INFO] finished tweaking crates.io crate serde_prometheus_labels 0.2.0
[INFO] tweaked toml for crates.io crate serde_prometheus_labels 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde_prometheus_labels 0.2.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages to latest compatible versions
[INFO] [stderr]       Adding prometheus-client v0.18.1 (available: v0.24.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prometheus-client-derive-text-encode v0.3.0
[INFO] [stderr]   Downloaded prometheus-client v0.18.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ae46d8c911e5cb1405abf46266416dc2aaef65a8d854abb7ed6252fac55914f
[INFO] running `Command { std: "docker" "start" "-a" "5ae46d8c911e5cb1405abf46266416dc2aaef65a8d854abb7ed6252fac55914f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ae46d8c911e5cb1405abf46266416dc2aaef65a8d854abb7ed6252fac55914f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ae46d8c911e5cb1405abf46266416dc2aaef65a8d854abb7ed6252fac55914f", kill_on_drop: false }`
[INFO] [stdout] 5ae46d8c911e5cb1405abf46266416dc2aaef65a8d854abb7ed6252fac55914f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93f0480dce0f41a4e7fb686547c0c4f8f733ec44ad06e5f208f4c93799ec7c95
[INFO] running `Command { std: "docker" "start" "-a" "93f0480dce0f41a4e7fb686547c0c4f8f733ec44ad06e5f208f4c93799ec7c95", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling serde_prometheus_labels v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "93f0480dce0f41a4e7fb686547c0c4f8f733ec44ad06e5f208f4c93799ec7c95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93f0480dce0f41a4e7fb686547c0c4f8f733ec44ad06e5f208f4c93799ec7c95", kill_on_drop: false }`
[INFO] [stdout] 93f0480dce0f41a4e7fb686547c0c4f8f733ec44ad06e5f208f4c93799ec7c95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2f99918740ed74ef9ad58910bf6617e8a1ece0cbf0393b158c4b35fb5e81b63
[INFO] running `Command { std: "docker" "start" "-a" "c2f99918740ed74ef9ad58910bf6617e8a1ece0cbf0393b158c4b35fb5e81b63", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde_prometheus_labels v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 6.94s
[INFO] running `Command { std: "docker" "inspect" "c2f99918740ed74ef9ad58910bf6617e8a1ece0cbf0393b158c4b35fb5e81b63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2f99918740ed74ef9ad58910bf6617e8a1ece0cbf0393b158c4b35fb5e81b63", kill_on_drop: false }`
[INFO] [stdout] c2f99918740ed74ef9ad58910bf6617e8a1ece0cbf0393b158c4b35fb5e81b63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1bbac90018247732bca8f513a8df7b8ca6bc8823b3d47a5280d5f952accc9f81
[INFO] running `Command { std: "docker" "start" "-a" "1bbac90018247732bca8f513a8df7b8ca6bc8823b3d47a5280d5f952accc9f81", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-4d49f28d2b7e6ab5)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test escapes ... ok
[INFO] [stderr]    Doc-tests serde_prometheus_labels
[INFO] [stdout] test invalid_key ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - to_string (line 52) ... ok
[INFO] [stdout] test src/lib.rs - to_string (line 24) ... ok
[INFO] [stdout] test src/lib.rs - to_vec (line 89) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.22s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1bbac90018247732bca8f513a8df7b8ca6bc8823b3d47a5280d5f952accc9f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bbac90018247732bca8f513a8df7b8ca6bc8823b3d47a5280d5f952accc9f81", kill_on_drop: false }`
[INFO] [stdout] 1bbac90018247732bca8f513a8df7b8ca6bc8823b3d47a5280d5f952accc9f81