[INFO] fetching crate metrics-prometheus-client 0.0.1...
[INFO] checking metrics-prometheus-client-0.0.1 against master#8a703520e80d87d4423c01f9d4fbc9e5f6533a02 for pr-154205-1
[INFO] extracting crate metrics-prometheus-client 0.0.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate metrics-prometheus-client 0.0.1
[INFO] finished tweaking crates.io crate metrics-prometheus-client 0.0.1
[INFO] tweaked toml for crates.io crate metrics-prometheus-client 0.0.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate metrics-prometheus-client 0.0.1 on toolchain 8a703520e80d87d4423c01f9d4fbc9e5f6533a02
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "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" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 25 packages to latest compatible versions
[INFO] [stderr]       Adding metrics v0.23.1 (available: v0.24.3)
[INFO] [stderr]       Adding prometheus-client v0.22.3 (available: v0.24.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dtoa v1.0.11
[INFO] [stderr]   Downloaded metrics v0.23.1
[INFO] [stderr]   Downloaded prometheus-client-derive-encode v0.4.2
[INFO] [stderr]   Downloaded portable-atomic v1.13.1
[INFO] [stderr]   Downloaded prometheus-client v0.22.3
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af0633f4ae9aeb3d2575619d539347ffd6a9e99ea4eb4dfcb6b6d16b6f721b99
[INFO] running `Command { std: "docker" "start" "-a" "af0633f4ae9aeb3d2575619d539347ffd6a9e99ea4eb4dfcb6b6d16b6f721b99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af0633f4ae9aeb3d2575619d539347ffd6a9e99ea4eb4dfcb6b6d16b6f721b99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af0633f4ae9aeb3d2575619d539347ffd6a9e99ea4eb4dfcb6b6d16b6f721b99", kill_on_drop: false }`
[INFO] [stdout] af0633f4ae9aeb3d2575619d539347ffd6a9e99ea4eb4dfcb6b6d16b6f721b99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7f8c9e2edf3e7804a84eef8c0e8113e9be068882fcaf05b7ac085b8131aa6b4
[INFO] running `Command { std: "docker" "start" "-a" "c7f8c9e2edf3e7804a84eef8c0e8113e9be068882fcaf05b7ac085b8131aa6b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]     Checking cfg-if v1.0.4
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling zerocopy v0.8.47
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking lock_api v0.4.14
[INFO] [stderr]     Checking once_cell v1.21.4
[INFO] [stderr]    Compiling prometheus-client v0.22.3
[INFO] [stderr]     Checking dtoa v1.0.11
[INFO] [stderr]     Checking itoa v1.0.18
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]    Compiling prometheus-client-derive-encode v0.4.2
[INFO] [stderr]     Checking metrics v0.23.1
[INFO] [stderr]     Checking metrics-prometheus-client v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.53s
[INFO] running `Command { std: "docker" "inspect" "c7f8c9e2edf3e7804a84eef8c0e8113e9be068882fcaf05b7ac085b8131aa6b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7f8c9e2edf3e7804a84eef8c0e8113e9be068882fcaf05b7ac085b8131aa6b4", kill_on_drop: false }`
[INFO] [stdout] c7f8c9e2edf3e7804a84eef8c0e8113e9be068882fcaf05b7ac085b8131aa6b4