[INFO] fetching crate serde_prometheus 0.1.5...
[INFO] checking serde_prometheus-0.1.5 against try#bb9dbf1d07454a99066eabaabd5819851281494b for pr-80920
[INFO] extracting crate serde_prometheus 0.1.5 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate serde_prometheus 0.1.5 on toolchain bb9dbf1d07454a99066eabaabd5819851281494b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_prometheus 0.1.5
[INFO] finished tweaking crates.io crate serde_prometheus 0.1.5
[INFO] tweaked toml for crates.io crate serde_prometheus 0.1.5 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate serde_prometheus 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded snafu v0.6.8
[INFO] [stderr]   Downloaded ftoa v0.1.1
[INFO] [stderr]   Downloaded bytes v0.5.4
[INFO] [stderr]   Downloaded derive_utils v0.9.1
[INFO] [stderr]   Downloaded arc-swap v0.4.6
[INFO] [stderr]   Downloaded proc-macro2 v1.0.12
[INFO] [stderr]   Downloaded aspect v0.2.0
[INFO] [stderr]   Downloaded mio-named-pipes v0.1.6
[INFO] [stderr]   Downloaded pin-project-lite v0.1.5
[INFO] [stderr]   Downloaded snafu-derive v0.6.8
[INFO] [stderr]   Downloaded tokio v0.2.20
[INFO] [stderr]   Downloaded hermit-abi v0.1.12
[INFO] [stderr]   Downloaded miow v0.3.3
[INFO] [stderr]   Downloaded quote v1.0.4
[INFO] [stderr]   Downloaded hdrhistogram v7.1.0
[INFO] [stderr]   Downloaded serde v1.0.110
[INFO] [stderr]   Downloaded libc v0.2.69
[INFO] [stderr]   Downloaded atomic v0.4.5
[INFO] [stderr]   Downloaded aspect-weave v0.2.0
[INFO] [stderr]   Downloaded metered-macro v0.4.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.2
[INFO] [stderr]   Downloaded regex v1.3.7
[INFO] [stderr]   Downloaded auto_enums_core v0.5.10
[INFO] [stderr]   Downloaded synattra v0.2.0
[INFO] [stderr]   Downloaded serde_derive v1.0.110
[INFO] [stderr]   Downloaded miniz_oxide v0.3.6
[INFO] [stderr]   Downloaded smallvec v1.4.0
[INFO] [stderr]   Downloaded metered v0.4.0
[INFO] [stderr]   Downloaded syn v1.0.20
[INFO] [stderr]   Downloaded auto_enums_derive v0.5.10
[INFO] [stderr]   Downloaded auto_enums v0.5.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 141d536ce865e7d471c55bceaf71079692de0c0cb8cf90b08c2ffc8759760533
[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" "141d536ce865e7d471c55bceaf71079692de0c0cb8cf90b08c2ffc8759760533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "141d536ce865e7d471c55bceaf71079692de0c0cb8cf90b08c2ffc8759760533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "141d536ce865e7d471c55bceaf71079692de0c0cb8cf90b08c2ffc8759760533", kill_on_drop: false }`
[INFO] [stdout] 141d536ce865e7d471c55bceaf71079692de0c0cb8cf90b08c2ffc8759760533
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eae0043825b69c20504e2319247b34939f5d269dbc2b0c6f92c6dcd9fca29cd9
[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" "eae0043825b69c20504e2319247b34939f5d269dbc2b0c6f92c6dcd9fca29cd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.20
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling auto_enums_derive v0.5.10
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking ftoa v0.1.1
[INFO] [stderr]     Checking atomic v0.4.5
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking lexical-core v0.7.4
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking quote v1.0.4
[INFO] [stderr]     Checking hdrhistogram v7.1.0
[INFO] [stderr]    Compiling derive_utils v0.9.1
[INFO] [stderr]    Compiling auto_enums_core v0.5.10
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling snafu-derive v0.6.8
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking tokio v0.2.20
[INFO] [stderr]    Compiling auto_enums v0.5.10
[INFO] [stderr]    Compiling synattra v0.2.0
[INFO] [stderr]     Checking aspect-weave v0.2.0
[INFO] [stderr]     Checking snafu v0.6.8
[INFO] [stderr]     Checking aspect v0.2.0
[INFO] [stderr]    Compiling metered-macro v0.4.0
[INFO] [stderr]     Checking serde v1.0.110
[INFO] [stderr]     Checking metered v0.4.0
[INFO] [stderr]     Checking serde_prometheus v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] running `Command { std: "docker" "inspect" "eae0043825b69c20504e2319247b34939f5d269dbc2b0c6f92c6dcd9fca29cd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eae0043825b69c20504e2319247b34939f5d269dbc2b0c6f92c6dcd9fca29cd9", kill_on_drop: false }`
[INFO] [stdout] eae0043825b69c20504e2319247b34939f5d269dbc2b0c6f92c6dcd9fca29cd9