[INFO] fetching crate plotpy 0.1.1...
[INFO] checking plotpy-0.1.1 against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] extracting crate plotpy 0.1.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate plotpy 0.1.1 on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate plotpy 0.1.1
[INFO] finished tweaking crates.io crate plotpy 0.1.1
[INFO] tweaked toml for crates.io crate plotpy 0.1.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6239c09604d41f81dc5f72331a62f9e5a85bca7204bcf558ec7c1a16dc842eeb
[INFO] running `Command { std: "docker" "start" "-a" "6239c09604d41f81dc5f72331a62f9e5a85bca7204bcf558ec7c1a16dc842eeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6239c09604d41f81dc5f72331a62f9e5a85bca7204bcf558ec7c1a16dc842eeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6239c09604d41f81dc5f72331a62f9e5a85bca7204bcf558ec7c1a16dc842eeb", kill_on_drop: false }`
[INFO] [stdout] 6239c09604d41f81dc5f72331a62f9e5a85bca7204bcf558ec7c1a16dc842eeb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97041ec10fbb327960bbf5fb73db7252429de6823b92a192d7d7dcd40f040f17
[INFO] running `Command { std: "docker" "start" "-a" "97041ec10fbb327960bbf5fb73db7252429de6823b92a192d7d7dcd40f040f17", kill_on_drop: false }`
[INFO] [stderr]     Checking plotpy v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `options`
[INFO] [stdout]   --> src/contour.rs:41:19
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub(crate) fn options(&self) -> String {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `options`
[INFO] [stdout]   --> src/graph3d.rs:25:19
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub(crate) fn options(&self) -> String {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `options`
[INFO] [stdout]   --> src/histogram.rs:29:19
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub(crate) fn options(&self) -> String {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `options`
[INFO] [stdout]   --> src/legend.rs:29:19
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub(crate) fn options() -> String {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `options`
[INFO] [stdout]   --> src/shapes.rs:27:19
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub(crate) fn options(&self) -> String {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `options`
[INFO] [stdout]   --> src/text.rs:25:19
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub(crate) fn options(&self) -> String {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `array2list`
[INFO] [stdout]  --> src/util.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub(crate) fn array2list<T: std::fmt::Display>(values: &[T]) -> String {
[INFO] [stdout]   |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/util.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let mut buffer = String::new();
[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: associated function is never used: `options`
[INFO] [stdout]   --> src/contour.rs:41:19
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub(crate) fn options(&self) -> String {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `options`
[INFO] [stdout]   --> src/graph3d.rs:25:19
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub(crate) fn options(&self) -> String {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `options`
[INFO] [stdout]   --> src/histogram.rs:29:19
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub(crate) fn options(&self) -> String {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `options`
[INFO] [stdout]   --> src/legend.rs:29:19
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub(crate) fn options() -> String {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `options`
[INFO] [stdout]   --> src/shapes.rs:27:19
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub(crate) fn options(&self) -> String {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `options`
[INFO] [stdout]   --> src/text.rs:25:19
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub(crate) fn options(&self) -> String {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "97041ec10fbb327960bbf5fb73db7252429de6823b92a192d7d7dcd40f040f17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97041ec10fbb327960bbf5fb73db7252429de6823b92a192d7d7dcd40f040f17", kill_on_drop: false }`
[INFO] [stdout] 97041ec10fbb327960bbf5fb73db7252429de6823b92a192d7d7dcd40f040f17