[INFO] fetching crate solana-metrics 1.1.15...
[INFO] checking solana-metrics-1.1.15 against try#4662032ab74cd44d423120d08d251dfead4914a0 for pr-72788
[INFO] extracting crate solana-metrics 1.1.15 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate solana-metrics 1.1.15 on toolchain 4662032ab74cd44d423120d08d251dfead4914a0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate solana-metrics 1.1.15
[INFO] finished tweaking crates.io crate solana-metrics 1.1.15
[INFO] tweaked toml for crates.io crate solana-metrics 1.1.15 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e40f9a31ae2d5a426b7b278fe2504701979d07d4ce0094a21022ef7a8e0249de
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "e40f9a31ae2d5a426b7b278fe2504701979d07d4ce0094a21022ef7a8e0249de"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]     Checking subtle v2.2.3
[INFO] [stderr]    Compiling indexmap v1.4.0
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking gethostname v0.2.1
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking crossbeam-queue v0.2.2
[INFO] [stderr]     Checking webpki-roots v0.19.0
[INFO] [stderr]     Checking curve25519-dalek v2.1.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking quote v1.0.6
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-rustls v0.13.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking solana-logger v1.2.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling pin-project-internal v0.4.17
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]    Compiling solana-sdk-macro v1.2.0
[INFO] [stderr]    Compiling num-derive v0.3.0
[INFO] [stderr]    Compiling serial_test_derive v0.4.0
[INFO] [stderr]     Checking serial_test v0.4.0
[INFO] [stderr]     Checking thiserror v1.0.19
[INFO] [stderr]     Checking pin-project v0.4.17
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking h2 v0.2.5
[INFO] [stderr]     Checking hyper v0.13.6
[INFO] [stderr]     Checking hyper-rustls v0.20.0
[INFO] [stderr]     Checking backtrace v0.3.48
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.3
[INFO] [stderr]     Checking bv v0.11.1
[INFO] [stderr]     Checking serde_bytes v0.11.4
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking generic-array v0.14.1
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking reqwest v0.10.6
[INFO] [stderr]     Checking solana-crate-features v1.2.0
[INFO] [stderr]     Checking solana-sdk v1.2.0
[INFO] [stderr]     Checking solana-metrics v1.1.15 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/metrics.rs:337:5
[INFO] [stderr]     |
[INFO] [stderr] 337 |     std::mem::replace(&mut *rw, host_id);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/metrics.rs:337:5
[INFO] [stderr]     |
[INFO] [stderr] 337 |     std::mem::replace(&mut *rw, host_id);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 13s
[INFO] running `"docker" "inspect" "e40f9a31ae2d5a426b7b278fe2504701979d07d4ce0094a21022ef7a8e0249de"`
[INFO] running `"docker" "rm" "-f" "e40f9a31ae2d5a426b7b278fe2504701979d07d4ce0094a21022ef7a8e0249de"`
[INFO] [stdout] e40f9a31ae2d5a426b7b278fe2504701979d07d4ce0094a21022ef7a8e0249de