[INFO] cloning repository https://github.com/LorenzoPichetti/RustPlot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LorenzoPichetti/RustPlot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLorenzoPichetti%2FRustPlot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLorenzoPichetti%2FRustPlot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e44d3466b20d2066bab9cd9a681133d0c5c39d9
[INFO] building LorenzoPichetti/RustPlot against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLorenzoPichetti%2FRustPlot" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LorenzoPichetti/RustPlot 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 git repo https://github.com/LorenzoPichetti/RustPlot
[INFO] finished tweaking git repo https://github.com/LorenzoPichetti/RustPlot
[INFO] tweaked toml for git repo https://github.com/LorenzoPichetti/RustPlot written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LorenzoPichetti/RustPlot 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gnuplot v0.0.37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] d207d5fa8a43b3d2c26c631ac0b36c180e5145036cc2480347217653c9f05c00
[INFO] running `Command { std: "docker" "start" "-a" "d207d5fa8a43b3d2c26c631ac0b36c180e5145036cc2480347217653c9f05c00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d207d5fa8a43b3d2c26c631ac0b36c180e5145036cc2480347217653c9f05c00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d207d5fa8a43b3d2c26c631ac0b36c180e5145036cc2480347217653c9f05c00", kill_on_drop: false }`
[INFO] [stdout] d207d5fa8a43b3d2c26c631ac0b36c180e5145036cc2480347217653c9f05c00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 0ec30ba4c17a645793945a90a8ae6fd5a7a0e9770e394647821b7ae1d9a750b7
[INFO] running `Command { std: "docker" "start" "-a" "0ec30ba4c17a645793945a90a8ae6fd5a7a0e9770e394647821b7ae1d9a750b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling gnuplot v0.0.37
[INFO] [stderr]    Compiling RustPlot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:206:54
[INFO] [stdout]     |
[INFO] [stdout] 206 | fn legginuovacoordinata(n:&mut usize, z:&mut Vec<Vec<(f64)>>) {
[INFO] [stdout]     |                                                      ^   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 206 - fn legginuovacoordinata(n:&mut usize, z:&mut Vec<Vec<(f64)>>) {
[INFO] [stdout] 206 + fn legginuovacoordinata(n:&mut usize, z:&mut Vec<Vec<f64>>) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:207:21
[INFO] [stdout]     |
[INFO] [stdout] 207 |     let nc: Vec<Vec<(f64)>> ;
[INFO] [stdout]     |                     ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 207 -     let nc: Vec<Vec<(f64)>> ;
[INFO] [stdout] 207 +     let nc: Vec<Vec<f64>> ;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:238:25
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn grafica (z:& Vec<Vec<(f64)>>, fg: &mut Figure)  {
[INFO] [stdout]     |                         ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 238 - fn grafica (z:& Vec<Vec<(f64)>>, fg: &mut Figure)  {
[INFO] [stdout] 238 + fn grafica (z:& Vec<Vec<f64>>, fg: &mut Figure)  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:294:24
[INFO] [stdout]     |
[INFO] [stdout] 294 |     let mut z: Vec<Vec<(f64)>>;
[INFO] [stdout]     |                        ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 294 -     let mut z: Vec<Vec<(f64)>>;
[INFO] [stdout] 294 +     let mut z: Vec<Vec<f64>>;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:85:56
[INFO] [stdout]    |
[INFO] [stdout] 85 | ...                   why.description()),
[INFO] [stdout]    |                           ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:93:56
[INFO] [stdout]    |
[INFO] [stdout] 93 | ...                   why.description()),
[INFO] [stdout]    |                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:289:5
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fg.show();
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 289 |     let _ = fg.show();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `Command { std: "docker" "inspect" "0ec30ba4c17a645793945a90a8ae6fd5a7a0e9770e394647821b7ae1d9a750b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ec30ba4c17a645793945a90a8ae6fd5a7a0e9770e394647821b7ae1d9a750b7", kill_on_drop: false }`
[INFO] [stdout] 0ec30ba4c17a645793945a90a8ae6fd5a7a0e9770e394647821b7ae1d9a750b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 95eb2bbd92ff31a3cdf3b46be2f4a3a70f628c83d87adebd699e33f501ab81dc
[INFO] running `Command { std: "docker" "start" "-a" "95eb2bbd92ff31a3cdf3b46be2f4a3a70f628c83d87adebd699e33f501ab81dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling RustPlot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:206:54
[INFO] [stdout]     |
[INFO] [stdout] 206 | fn legginuovacoordinata(n:&mut usize, z:&mut Vec<Vec<(f64)>>) {
[INFO] [stdout]     |                                                      ^   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 206 - fn legginuovacoordinata(n:&mut usize, z:&mut Vec<Vec<(f64)>>) {
[INFO] [stdout] 206 + fn legginuovacoordinata(n:&mut usize, z:&mut Vec<Vec<f64>>) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:207:21
[INFO] [stdout]     |
[INFO] [stdout] 207 |     let nc: Vec<Vec<(f64)>> ;
[INFO] [stdout]     |                     ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 207 -     let nc: Vec<Vec<(f64)>> ;
[INFO] [stdout] 207 +     let nc: Vec<Vec<f64>> ;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:238:25
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn grafica (z:& Vec<Vec<(f64)>>, fg: &mut Figure)  {
[INFO] [stdout]     |                         ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 238 - fn grafica (z:& Vec<Vec<(f64)>>, fg: &mut Figure)  {
[INFO] [stdout] 238 + fn grafica (z:& Vec<Vec<f64>>, fg: &mut Figure)  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:294:24
[INFO] [stdout]     |
[INFO] [stdout] 294 |     let mut z: Vec<Vec<(f64)>>;
[INFO] [stdout]     |                        ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 294 -     let mut z: Vec<Vec<(f64)>>;
[INFO] [stdout] 294 +     let mut z: Vec<Vec<f64>>;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:85:56
[INFO] [stdout]    |
[INFO] [stdout] 85 | ...                   why.description()),
[INFO] [stdout]    |                           ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:93:56
[INFO] [stdout]    |
[INFO] [stdout] 93 | ...                   why.description()),
[INFO] [stdout]    |                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:289:5
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fg.show();
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 289 |     let _ = fg.show();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "95eb2bbd92ff31a3cdf3b46be2f4a3a70f628c83d87adebd699e33f501ab81dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95eb2bbd92ff31a3cdf3b46be2f4a3a70f628c83d87adebd699e33f501ab81dc", kill_on_drop: false }`
[INFO] [stdout] 95eb2bbd92ff31a3cdf3b46be2f4a3a70f628c83d87adebd699e33f501ab81dc