[INFO] fetching crate sc-proposer-metrics 0.8.0-rc6...
[INFO] checking sc-proposer-metrics-0.8.0-rc6 against try#05c8870159e4f328578a970e125aa76d24f03b56 for pr-76219
[INFO] extracting crate sc-proposer-metrics 0.8.0-rc6 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate sc-proposer-metrics 0.8.0-rc6 on toolchain 05c8870159e4f328578a970e125aa76d24f03b56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sc-proposer-metrics 0.8.0-rc6
[INFO] finished tweaking crates.io crate sc-proposer-metrics 0.8.0-rc6
[INFO] tweaked toml for crates.io crate sc-proposer-metrics 0.8.0-rc6 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1ad12ae6806e9d356eeb9b9c4e0d14c7efd4edda52cc5d64bec00d9a16ba48b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c1ad12ae6806e9d356eeb9b9c4e0d14c7efd4edda52cc5d64bec00d9a16ba48b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1ad12ae6806e9d356eeb9b9c4e0d14c7efd4edda52cc5d64bec00d9a16ba48b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1ad12ae6806e9d356eeb9b9c4e0d14c7efd4edda52cc5d64bec00d9a16ba48b", kill_on_drop: false }`
[INFO] [stdout] c1ad12ae6806e9d356eeb9b9c4e0d14c7efd4edda52cc5d64bec00d9a16ba48b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50347b66bc2469c48a4561d64020b4ce9b8ef5646532b540e07938a9f626ab09
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "50347b66bc2469c48a4561d64020b4ce9b8ef5646532b540e07938a9f626ab09", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking hashbrown v0.9.0
[INFO] [stderr]    Compiling prometheus v0.9.0
[INFO] [stderr]     Checking send_wrapper v0.4.0
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking tracing-core v0.1.16
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking futures-lite v0.1.11
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking async-channel v1.4.2
[INFO] [stderr]     Checking indexmap v1.6.0
[INFO] [stderr]     Checking polling v0.1.9
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking async-io v0.1.11
[INFO] [stderr]     Checking blocking v0.5.2
[INFO] [stderr]     Checking async-executor v0.1.2
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.68
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.68
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling derive_more v0.99.9
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.68
[INFO] [stderr]     Checking wasm-bindgen v0.2.68
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking js-sys v0.3.45
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking web-sys v0.3.45
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking gloo-timers v0.2.1
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking async-std v1.6.3
[INFO] [stderr]     Checking hyper v0.13.7
[INFO] [stderr]     Checking substrate-prometheus-endpoint v0.8.0-rc6
[INFO] [stderr]     Checking sc-proposer-metrics v0.8.0-rc6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 40s
[INFO] running `Command { std: "docker" "inspect" "50347b66bc2469c48a4561d64020b4ce9b8ef5646532b540e07938a9f626ab09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50347b66bc2469c48a4561d64020b4ce9b8ef5646532b540e07938a9f626ab09", kill_on_drop: false }`
[INFO] [stdout] 50347b66bc2469c48a4561d64020b4ce9b8ef5646532b540e07938a9f626ab09