[INFO] fetching crate solana_libra_metrics 0.0.1-sol5...
[INFO] checking solana_libra_metrics-0.0.1-sol5 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate solana_libra_metrics 0.0.1-sol5 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate solana_libra_metrics 0.0.1-sol5 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate solana_libra_metrics 0.0.1-sol5
[INFO] finished tweaking crates.io crate solana_libra_metrics 0.0.1-sol5
[INFO] tweaked toml for crates.io crate solana_libra_metrics 0.0.1-sol5 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 174 packages
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded solana_libra_failure_macros v0.0.1-sol5
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[INFO] [stderr]   Downloaded slog-stdlog v4.1.1
[INFO] [stderr]   Downloaded solana_libra_failure_ext v0.0.1-sol5
[INFO] [stderr]   Downloaded solana_libra_logger v0.0.1-sol5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de7770f779ed4cb8a0ab63a4a290df415437666a06f0d8bb42ed359835dce3eb
[INFO] running `Command { std: "docker" "start" "-a" "de7770f779ed4cb8a0ab63a4a290df415437666a06f0d8bb42ed359835dce3eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de7770f779ed4cb8a0ab63a4a290df415437666a06f0d8bb42ed359835dce3eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de7770f779ed4cb8a0ab63a4a290df415437666a06f0d8bb42ed359835dce3eb", kill_on_drop: false }`
[INFO] [stdout] de7770f779ed4cb8a0ab63a4a290df415437666a06f0d8bb42ed359835dce3eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 542ae9e7fa94f040b2eabeb4f0e3e3161f04bed3ad757f0658ae05c2a3945bd9
[INFO] running `Command { std: "docker" "start" "-a" "542ae9e7fa94f040b2eabeb4f0e3e3161f04bed3ad757f0658ae05c2a3945bd9", kill_on_drop: false }`
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[INFO] [stderr]     Checking solana_libra_metrics v0.0.1-sol5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Collector` is imported redundantly
[INFO] [stdout]  --> src/unit_tests/lib_test.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::super::*;
[INFO] [stdout]   |     --------------- the item `Collector` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 7 | use prometheus::{core::Collector, proto::MetricFamily, Counter, IntCounter, Opts, Registry};
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `IntCounter` is imported redundantly
[INFO] [stdout]  --> src/unit_tests/lib_test.rs:7:65
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::super::*;
[INFO] [stdout]   |     --------------- the item `IntCounter` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 7 | use prometheus::{core::Collector, proto::MetricFamily, Counter, IntCounter, Opts, Registry};
[INFO] [stdout]   |                                                                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `module` is never read
[INFO] [stdout]   --> src/op_counters.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct OpMetrics {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 38 |     module: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OpMetrics` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `module` is never read
[INFO] [stdout]   --> src/op_counters.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct OpMetrics {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 38 |     module: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OpMetrics` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.95s
[INFO] running `Command { std: "docker" "inspect" "542ae9e7fa94f040b2eabeb4f0e3e3161f04bed3ad757f0658ae05c2a3945bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "542ae9e7fa94f040b2eabeb4f0e3e3161f04bed3ad757f0658ae05c2a3945bd9", kill_on_drop: false }`
[INFO] [stdout] 542ae9e7fa94f040b2eabeb4f0e3e3161f04bed3ad757f0658ae05c2a3945bd9