[INFO] fetching crate linera-metrics 0.15.4...
[INFO] testing linera-metrics-0.15.4 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate linera-metrics 0.15.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate linera-metrics 0.15.4
[INFO] finished tweaking crates.io crate linera-metrics 0.15.4
[INFO] tweaked toml for crates.io crate linera-metrics 0.15.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate linera-metrics 0.15.4 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate linera-metrics 0.15.4 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a237846fe0c0da5309ba5882b56f4177cb2ecfae827dc4f0afef706fed4b5df4
[INFO] running `Command { std: "docker" "start" "-a" "a237846fe0c0da5309ba5882b56f4177cb2ecfae827dc4f0afef706fed4b5df4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a237846fe0c0da5309ba5882b56f4177cb2ecfae827dc4f0afef706fed4b5df4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a237846fe0c0da5309ba5882b56f4177cb2ecfae827dc4f0afef706fed4b5df4", kill_on_drop: false }`
[INFO] [stdout] a237846fe0c0da5309ba5882b56f4177cb2ecfae827dc4f0afef706fed4b5df4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05f0788505f6998231e1630018008bf5902ea93ede061e5ac17703a09d5b950f
[INFO] running `Command { std: "docker" "start" "-a" "05f0788505f6998231e1630018008bf5902ea93ede061e5ac17703a09d5b950f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.97
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling tower-service v0.3.3
[INFO] [stderr]    Compiling serde_json v1.0.142
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling tower-layer v0.3.3
[INFO] [stderr]    Compiling httpdate v1.0.3
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling sync_wrapper v1.0.2
[INFO] [stderr]    Compiling protobuf v2.28.0
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]    Compiling mime v0.3.17
[INFO] [stderr]    Compiling prometheus v0.13.4
[INFO] [stderr]    Compiling matchit v0.8.4
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.105
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.6
[INFO] [stderr]    Compiling socket2 v0.6.0
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling serde_path_to_error v0.1.17
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling axum-core v0.5.2
[INFO] [stderr]    Compiling hyper v1.6.0
[INFO] [stderr]    Compiling tower v0.5.2
[INFO] [stderr]    Compiling tokio-util v0.7.16
[INFO] [stderr]    Compiling hyper-util v0.1.16
[INFO] [stderr]    Compiling axum v0.8.4
[INFO] [stderr]    Compiling linera-metrics v0.15.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.15s
[INFO] running `Command { std: "docker" "inspect" "05f0788505f6998231e1630018008bf5902ea93ede061e5ac17703a09d5b950f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05f0788505f6998231e1630018008bf5902ea93ede061e5ac17703a09d5b950f", kill_on_drop: false }`
[INFO] [stdout] 05f0788505f6998231e1630018008bf5902ea93ede061e5ac17703a09d5b950f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5c50d74fa77f8bb4accdeaf77df33089175b4a93b42d41552d7697fd1d4b132
[INFO] running `Command { std: "docker" "start" "-a" "b5c50d74fa77f8bb4accdeaf77df33089175b4a93b42d41552d7697fd1d4b132", kill_on_drop: false }`
[INFO] [stderr]    Compiling linera-metrics v0.15.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "b5c50d74fa77f8bb4accdeaf77df33089175b4a93b42d41552d7697fd1d4b132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5c50d74fa77f8bb4accdeaf77df33089175b4a93b42d41552d7697fd1d4b132", kill_on_drop: false }`
[INFO] [stdout] b5c50d74fa77f8bb4accdeaf77df33089175b4a93b42d41552d7697fd1d4b132
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d0a75be4c48cfda5db1685c667d6f7095677d097040e29532d2094108c8522d6
[INFO] running `Command { std: "docker" "start" "-a" "d0a75be4c48cfda5db1685c667d6f7095677d097040e29532d2094108c8522d6", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/linera_metrics-0bb56c3ca49de2b9)
[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] [stderr]    Doc-tests linera_metrics
[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" "d0a75be4c48cfda5db1685c667d6f7095677d097040e29532d2094108c8522d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0a75be4c48cfda5db1685c667d6f7095677d097040e29532d2094108c8522d6", kill_on_drop: false }`
[INFO] [stdout] d0a75be4c48cfda5db1685c667d6f7095677d097040e29532d2094108c8522d6