[INFO] fetching crate prometheus 0.10.0...
[INFO] checking prometheus-0.10.0 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate prometheus 0.10.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate prometheus 0.10.0 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prometheus 0.10.0
[INFO] finished tweaking crates.io crate prometheus 0.10.0
[INFO] tweaked toml for crates.io crate prometheus 0.10.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate prometheus 0.10.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded procfs v0.8.0
[INFO] [stderr]   Downloaded protobuf-codegen v2.10.2
[INFO] [stderr]   Downloaded protobuf-codegen-pure v2.10.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d185f990a461667d2e23c7a2f46656c7d7cebdd9397141a28f46067b4068525a
[INFO] running `Command { std: "docker" "start" "-a" "d185f990a461667d2e23c7a2f46656c7d7cebdd9397141a28f46067b4068525a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d185f990a461667d2e23c7a2f46656c7d7cebdd9397141a28f46067b4068525a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d185f990a461667d2e23c7a2f46656c7d7cebdd9397141a28f46067b4068525a", kill_on_drop: false }`
[INFO] [stdout] d185f990a461667d2e23c7a2f46656c7d7cebdd9397141a28f46067b4068525a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 805173355b789bfd43a44aefd716ee42a0c13bb301b3e2c99ac506a40a7b6120
[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" "805173355b789bfd43a44aefd716ee42a0c13bb301b3e2c99ac506a40a7b6120", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling protobuf v2.10.2
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]     Checking instant v0.1.6
[INFO] [stderr]    Compiling prometheus v0.10.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.11
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]     Checking thiserror v1.0.11
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking h2 v0.2.2
[INFO] [stderr]     Checking hyper v0.13.4
[INFO] [stdout] warning: associated function is never used: `swap`
[INFO] [stdout]    --> benches/../src/atomic64.rs:130:12
[INFO] [stdout]     |
[INFO] [stdout] 130 |     pub fn swap(&self, val: f64, ordering: Ordering) -> f64 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `compare_and_swap`
[INFO] [stdout]    --> benches/../src/atomic64.rs:209:12
[INFO] [stdout]     |
[INFO] [stdout] 209 |     pub fn compare_and_swap(&self, current: u64, new: u64, ordering: Ordering) -> u64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `swap`
[INFO] [stdout]    --> benches/../src/atomic64.rs:219:12
[INFO] [stdout]     |
[INFO] [stdout] 219 |     pub fn swap(&self, val: u64, ordering: Ordering) -> u64 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.94s
[INFO] running `Command { std: "docker" "inspect" "805173355b789bfd43a44aefd716ee42a0c13bb301b3e2c99ac506a40a7b6120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "805173355b789bfd43a44aefd716ee42a0c13bb301b3e2c99ac506a40a7b6120", kill_on_drop: false }`
[INFO] [stdout] 805173355b789bfd43a44aefd716ee42a0c13bb301b3e2c99ac506a40a7b6120