[INFO] fetching crate sklears-metrics 0.1.0-alpha.1...
[INFO] checking sklears-metrics-0.1.0-alpha.1 against master#e22dab387f6b4f6a87dfc54ac2f6013dddb41e68 for pr-149195
[INFO] extracting crate sklears-metrics 0.1.0-alpha.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate sklears-metrics 0.1.0-alpha.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate sklears-metrics 0.1.0-alpha.1
[INFO] tweaked toml for crates.io crate sklears-metrics 0.1.0-alpha.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sklears-metrics 0.1.0-alpha.1 on toolchain e22dab387f6b4f6a87dfc54ac2f6013dddb41e68
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e22dab387f6b4f6a87dfc54ac2f6013dddb41e68" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sklears-metrics 0.1.0-alpha.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e22dab387f6b4f6a87dfc54ac2f6013dddb41e68" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded friedrich v0.5.0
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[INFO] [stderr]   Downloaded sklears-core v0.1.0-alpha.1
[INFO] [stderr]   Downloaded scirs2-metrics v0.1.0-rc.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+e22dab387f6b4f6a87dfc54ac2f6013dddb41e68" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ac1b1e67f184a39f5c8f2b5fd57b1b6be08f862451621b43790e36b19388dee
[INFO] running `Command { std: "docker" "start" "-a" "6ac1b1e67f184a39f5c8f2b5fd57b1b6be08f862451621b43790e36b19388dee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ac1b1e67f184a39f5c8f2b5fd57b1b6be08f862451621b43790e36b19388dee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ac1b1e67f184a39f5c8f2b5fd57b1b6be08f862451621b43790e36b19388dee", kill_on_drop: false }`
[INFO] [stdout] 6ac1b1e67f184a39f5c8f2b5fd57b1b6be08f862451621b43790e36b19388dee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+e22dab387f6b4f6a87dfc54ac2f6013dddb41e68" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1b079430bedcb0d6c417871a64607fd31a38081f79c9e0edd6e9928b8705dee
[INFO] running `Command { std: "docker" "start" "-a" "e1b079430bedcb0d6c417871a64607fd31a38081f79c9e0edd6e9928b8705dee", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/property_tests.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         size in 10..100usize,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/property_tests.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let size = values.len();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chunk_size_actual`
[INFO] [stdout]    --> src/property_tests.rs:580:17
[INFO] [stdout]     |
[INFO] [stdout] 580 |             let chunk_size_actual = chunk_end - chunk_start;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chunk_size_actual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]     --> src/performance_enhancements.rs:1057:17
[INFO] [stdout]      |
[INFO] [stdout] 1057 |         assert!(recommendations.len() >= 0);
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 05s
[INFO] running `Command { std: "docker" "inspect" "e1b079430bedcb0d6c417871a64607fd31a38081f79c9e0edd6e9928b8705dee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1b079430bedcb0d6c417871a64607fd31a38081f79c9e0edd6e9928b8705dee", kill_on_drop: false }`
[INFO] [stdout] e1b079430bedcb0d6c417871a64607fd31a38081f79c9e0edd6e9928b8705dee
