[INFO] cloning repository https://github.com/pearisgreen/cplot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pearisgreen/cplot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpearisgreen%2Fcplot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpearisgreen%2Fcplot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8a7b24c449fc1809e4596947a9c10cf58b26f59b
[INFO] checking pearisgreen/cplot against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpearisgreen%2Fcplot" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pearisgreen/cplot on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pearisgreen/cplot
[INFO] finished tweaking git repo https://github.com/pearisgreen/cplot
[INFO] tweaked toml for git repo https://github.com/pearisgreen/cplot written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/pearisgreen/cplot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7b0c800e32461060aba34f5bd37b7296e4692da12dda6255cb9f2cc8f190185
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a7b0c800e32461060aba34f5bd37b7296e4692da12dda6255cb9f2cc8f190185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7b0c800e32461060aba34f5bd37b7296e4692da12dda6255cb9f2cc8f190185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7b0c800e32461060aba34f5bd37b7296e4692da12dda6255cb9f2cc8f190185", kill_on_drop: false }`
[INFO] [stdout] a7b0c800e32461060aba34f5bd37b7296e4692da12dda6255cb9f2cc8f190185
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a0282be3bde5721d7639c49a7bc0a0036be0ccf3056b36b8a922acfb58e1dd9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3a0282be3bde5721d7639c49a7bc0a0036be0ccf3056b36b8a922acfb58e1dd9", kill_on_drop: false }`
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[INFO] [stderr]     Checking cplot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::f64::consts::PI`
[INFO] [stdout]  --> src/plot.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::f64::consts::PI;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Image_Buffer` should have an upper camel case name
[INFO] [stdout]   --> src/plot.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 | type Image_Buffer = im::ImageBuffer<Rgba<u8>, Vec<u8>>;
[INFO] [stdout]    |      ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ImageBuffer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::f64::consts::PI`
[INFO] [stdout]  --> src/plot.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::f64::consts::PI;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Image_Buffer` should have an upper camel case name
[INFO] [stdout]   --> src/plot.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 | type Image_Buffer = im::ImageBuffer<Rgba<u8>, Vec<u8>>;
[INFO] [stdout]    |      ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ImageBuffer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r_a`
[INFO] [stdout]   --> src/main.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 58 |         if let Some(r_a) = e.render_args() {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_r_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `button`
[INFO] [stdout]   --> src/main.rs:65:21
[INFO] [stdout]    |
[INFO] [stdout] 65 |         if let Some(button) = e.press_args() {
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_button`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u_a`
[INFO] [stdout]   --> src/main.rs:68:21
[INFO] [stdout]    |
[INFO] [stdout] 68 |         if let Some(u_a) = e.update_args() {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_u_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `val` is never read
[INFO] [stdout]   --> src/plot.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let mut val: f64 = 0.0;
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `canvas`
[INFO] [stdout]   --> src/plot.rs:60:25
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn draw_grid(&self, canvas: &mut Image_Buffer) {
[INFO] [stdout]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_canvas`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sin`
[INFO] [stdout]   --> src/complex.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn sin(n: Cpx) -> Cpx {
[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: `tan`
[INFO] [stdout]   --> src/complex.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn tan(n: Cpx) -> Option<Cpx> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r_a`
[INFO] [stdout]   --> src/main.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 58 |         if let Some(r_a) = e.render_args() {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_r_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `button`
[INFO] [stdout]   --> src/main.rs:65:21
[INFO] [stdout]    |
[INFO] [stdout] 65 |         if let Some(button) = e.press_args() {
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_button`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u_a`
[INFO] [stdout]   --> src/main.rs:68:21
[INFO] [stdout]    |
[INFO] [stdout] 68 |         if let Some(u_a) = e.update_args() {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_u_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `val` is never read
[INFO] [stdout]   --> src/plot.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let mut val: f64 = 0.0;
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `canvas`
[INFO] [stdout]   --> src/plot.rs:60:25
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn draw_grid(&self, canvas: &mut Image_Buffer) {
[INFO] [stdout]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_canvas`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sin`
[INFO] [stdout]   --> src/complex.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn sin(n: Cpx) -> Cpx {
[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: `tan`
[INFO] [stdout]   --> src/complex.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn tan(n: Cpx) -> Option<Cpx> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 24s
[INFO] running `Command { std: "docker" "inspect" "3a0282be3bde5721d7639c49a7bc0a0036be0ccf3056b36b8a922acfb58e1dd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a0282be3bde5721d7639c49a7bc0a0036be0ccf3056b36b8a922acfb58e1dd9", kill_on_drop: false }`
[INFO] [stdout] 3a0282be3bde5721d7639c49a7bc0a0036be0ccf3056b36b8a922acfb58e1dd9