[INFO] fetching crate eval-metrics 1.0.2...
[INFO] checking eval-metrics-1.0.2 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate eval-metrics 1.0.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate eval-metrics 1.0.2
[INFO] finished tweaking crates.io crate eval-metrics 1.0.2
[INFO] tweaked toml for crates.io crate eval-metrics 1.0.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate eval-metrics 1.0.2 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--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]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca50f8e28f0a428fd12bc0fbca4c6573ac07ca0920d12bd455d51687dc07dd75
[INFO] running `Command { std: "docker" "start" "-a" "ca50f8e28f0a428fd12bc0fbca4c6573ac07ca0920d12bd455d51687dc07dd75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca50f8e28f0a428fd12bc0fbca4c6573ac07ca0920d12bd455d51687dc07dd75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca50f8e28f0a428fd12bc0fbca4c6573ac07ca0920d12bd455d51687dc07dd75", kill_on_drop: false }`
[INFO] [stdout] ca50f8e28f0a428fd12bc0fbca4c6573ac07ca0920d12bd455d51687dc07dd75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 325cb47bfc1fcee8e1aff3ac451ead65945fe758a9fbedc0caa11a9e91810d1c
[INFO] running `Command { std: "docker" "start" "-a" "325cb47bfc1fcee8e1aff3ac451ead65945fe758a9fbedc0caa11a9e91810d1c", kill_on_drop: false }`
[INFO] [stderr]     Checking assert_approx_eq v1.1.0
[INFO] [stderr]     Checking eval-metrics v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/classification.rs:261:44
[INFO] [stdout]     |
[INFO] [stdout] 261 |                         } else if let Some(mut point) = points.last_mut() {
[INFO] [stdout]     |                                            ----^^^^^
[INFO] [stdout]     |                                            |
[INFO] [stdout]     |                                            help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/classification.rs:267:44
[INFO] [stdout]     |
[INFO] [stdout] 267 |                         } else if let Some(mut point) = points.last_mut() {
[INFO] [stdout]     |                                            ----^^^^^
[INFO] [stdout]     |                                            |
[INFO] [stdout]     |                                            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/classification.rs:291:25
[INFO] [stdout]     |
[INFO] [stdout] 291 |             if let Some(mut point) = points.last_mut() {
[INFO] [stdout]     |                         ----^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/classification.rs:261:44
[INFO] [stdout]     |
[INFO] [stdout] 261 |                         } else if let Some(mut point) = points.last_mut() {
[INFO] [stdout]     |                                            ----^^^^^
[INFO] [stdout]     |                                            |
[INFO] [stdout]     |                                            help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/classification.rs:267:44
[INFO] [stdout]     |
[INFO] [stdout] 267 |                         } else if let Some(mut point) = points.last_mut() {
[INFO] [stdout]     |                                            ----^^^^^
[INFO] [stdout]     |                                            |
[INFO] [stdout]     |                                            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/classification.rs:291:25
[INFO] [stdout]     |
[INFO] [stdout] 291 |             if let Some(mut point) = points.last_mut() {
[INFO] [stdout]     |                         ----^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "325cb47bfc1fcee8e1aff3ac451ead65945fe758a9fbedc0caa11a9e91810d1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "325cb47bfc1fcee8e1aff3ac451ead65945fe758a9fbedc0caa11a9e91810d1c", kill_on_drop: false }`
[INFO] [stdout] 325cb47bfc1fcee8e1aff3ac451ead65945fe758a9fbedc0caa11a9e91810d1c