[INFO] cloning repository https://github.com/geekingfrog/rust-graphics
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/geekingfrog/rust-graphics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeekingfrog%2Frust-graphics", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeekingfrog%2Frust-graphics'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e2d9c962387380a863c33680186757d457b6bff
[INFO] checking geekingfrog/rust-graphics against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeekingfrog%2Frust-graphics" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/geekingfrog/rust-graphics on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/geekingfrog/rust-graphics
[INFO] finished tweaking git repo https://github.com/geekingfrog/rust-graphics
[INFO] tweaked toml for git repo https://github.com/geekingfrog/rust-graphics written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/geekingfrog/rust-graphics already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-complex v0.2.4
[INFO] [stderr]   Downloaded png v0.16.3
[INFO] [stderr]   Downloaded image v0.23.4
[INFO] [stderr]   Downloaded sdl2-sys v0.34.0
[INFO] [stderr]   Downloaded sdl2 v0.34.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a0639b202053bb45edd1413e23ab4c02bdb68d8eb01d319c4368460810934b7
[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" "1a0639b202053bb45edd1413e23ab4c02bdb68d8eb01d319c4368460810934b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a0639b202053bb45edd1413e23ab4c02bdb68d8eb01d319c4368460810934b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a0639b202053bb45edd1413e23ab4c02bdb68d8eb01d319c4368460810934b7", kill_on_drop: false }`
[INFO] [stdout] 1a0639b202053bb45edd1413e23ab4c02bdb68d8eb01d319c4368460810934b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7385fec47d494c8096d188146cfc380fad095077e5fa7f2c772b0baade6e5272
[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" "7385fec47d494c8096d188146cfc380fad095077e5fa7f2c772b0baade6e5272", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling sdl2 v0.34.0
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling sdl2-sys v0.34.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking png v0.16.3
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking num-iter v0.1.40
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.19
[INFO] [stderr]     Checking image v0.23.4
[INFO] [stderr]     Checking graphics v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::seq::SliceRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SeedableRng`
[INFO] [stdout]  --> src/sdl.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::{Rng, SeedableRng};
[INFO] [stdout]   |                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::pixels::Color`
[INFO] [stdout]  --> src/sdl.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use sdl2::pixels::Color;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::seq::SliceRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SeedableRng`
[INFO] [stdout]  --> src/sdl.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::{Rng, SeedableRng};
[INFO] [stdout]   |                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::pixels::Color`
[INFO] [stdout]  --> src/sdl.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use sdl2::pixels::Color;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     return;
[INFO] [stdout]    |     ------ any code following this expression is unreachable
[INFO] [stdout] 64 | 
[INFO] [stdout] 65 |     let imgx = 1 << 8;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     return;
[INFO] [stdout]    |     ------ any code following this expression is unreachable
[INFO] [stdout] 64 | 
[INFO] [stdout] 65 |     let imgx = 1 << 8;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]   --> src/main.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let mut rng = rand::thread_rng();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/sdl.rs:323:9
[INFO] [stdout]     |
[INFO] [stdout] 323 |     let start = std::time::Instant::now();
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/sdl.rs:375:9
[INFO] [stdout]     |
[INFO] [stdout] 375 |     let start = std::time::Instant::now();
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]   --> src/main.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let mut rng = rand::thread_rng();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/sdl.rs:323:9
[INFO] [stdout]     |
[INFO] [stdout] 323 |     let start = std::time::Instant::now();
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/sdl.rs:375:9
[INFO] [stdout]     |
[INFO] [stdout] 375 |     let start = std::time::Instant::now();
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test`
[INFO] [stdout]  --> src/fractal.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zn`
[INFO] [stdout]   --> src/fractal.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn zn(limit: u16, c: Complex<f32>) -> u16 {
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test`
[INFO] [stdout]  --> src/fractal.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zn`
[INFO] [stdout]   --> src/fractal.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn zn(limit: u16, c: Complex<f32>) -> u16 {
[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 26.63s
[INFO] running `Command { std: "docker" "inspect" "7385fec47d494c8096d188146cfc380fad095077e5fa7f2c772b0baade6e5272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7385fec47d494c8096d188146cfc380fad095077e5fa7f2c772b0baade6e5272", kill_on_drop: false }`
[INFO] [stdout] 7385fec47d494c8096d188146cfc380fad095077e5fa7f2c772b0baade6e5272