[INFO] fetching crate eval-metrics 1.0.2...
[INFO] building eval-metrics-1.0.2 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate eval-metrics 1.0.2 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate eval-metrics 1.0.2 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6158ab648a2ccf5e903ed6c18fbae19880d52ead2a9a2d344f8375e1f6f58ebe
[INFO] running `Command { std: "docker" "start" "-a" "6158ab648a2ccf5e903ed6c18fbae19880d52ead2a9a2d344f8375e1f6f58ebe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6158ab648a2ccf5e903ed6c18fbae19880d52ead2a9a2d344f8375e1f6f58ebe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6158ab648a2ccf5e903ed6c18fbae19880d52ead2a9a2d344f8375e1f6f58ebe", kill_on_drop: false }`
[INFO] [stdout] 6158ab648a2ccf5e903ed6c18fbae19880d52ead2a9a2d344f8375e1f6f58ebe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 650ef8abec323f3550b2128c2fbaf8f568a6d1d6a6c7e96f52b0f1a4b8290beb
[INFO] running `Command { std: "docker" "start" "-a" "650ef8abec323f3550b2128c2fbaf8f568a6d1d6a6c7e96f52b0f1a4b8290beb", kill_on_drop: false }`
[INFO] [stderr]    Compiling assert_approx_eq v1.1.0
[INFO] [stderr]    Compiling 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "650ef8abec323f3550b2128c2fbaf8f568a6d1d6a6c7e96f52b0f1a4b8290beb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "650ef8abec323f3550b2128c2fbaf8f568a6d1d6a6c7e96f52b0f1a4b8290beb", kill_on_drop: false }`
[INFO] [stdout] 650ef8abec323f3550b2128c2fbaf8f568a6d1d6a6c7e96f52b0f1a4b8290beb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e03d08e92d2ffcdeab437483a6e6529938b4c12d729442088a2bfbd39ac0792e
[INFO] running `Command { std: "docker" "start" "-a" "e03d08e92d2ffcdeab437483a6e6529938b4c12d729442088a2bfbd39ac0792e", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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 `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "e03d08e92d2ffcdeab437483a6e6529938b4c12d729442088a2bfbd39ac0792e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e03d08e92d2ffcdeab437483a6e6529938b4c12d729442088a2bfbd39ac0792e", kill_on_drop: false }`
[INFO] [stdout] e03d08e92d2ffcdeab437483a6e6529938b4c12d729442088a2bfbd39ac0792e