[INFO] updating cached repository maniacalmm/rust_mandelbrot_set
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/maniacalmm/rust_mandelbrot_set
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/maniacalmm/rust_mandelbrot_set" "work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/maniacalmm/rust_mandelbrot_set"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/maniacalmm/rust_mandelbrot_set'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/maniacalmm/rust_mandelbrot_set" "work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/maniacalmm/rust_mandelbrot_set"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/maniacalmm/rust_mandelbrot_set'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 26faf773fccc61dee2694bb15d9d93415a82288d
[INFO] sha for GitHub repo maniacalmm/rust_mandelbrot_set: 26faf773fccc61dee2694bb15d9d93415a82288d
[INFO] validating manifest of maniacalmm/rust_mandelbrot_set on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of maniacalmm/rust_mandelbrot_set on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing maniacalmm/rust_mandelbrot_set
[INFO] finished frobbing maniacalmm/rust_mandelbrot_set
[INFO] frobbed toml for maniacalmm/rust_mandelbrot_set written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/maniacalmm/rust_mandelbrot_set/Cargo.toml
[INFO] started frobbing maniacalmm/rust_mandelbrot_set
[INFO] finished frobbing maniacalmm/rust_mandelbrot_set
[INFO] frobbed toml for maniacalmm/rust_mandelbrot_set written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/maniacalmm/rust_mandelbrot_set/Cargo.toml
[INFO] crate maniacalmm/rust_mandelbrot_set already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking maniacalmm/rust_mandelbrot_set against master#efe2f32a6b8217425f361ec7c206910c611c03ee for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-4/master#efe2f32a6b8217425f361ec7c206910c611c03ee:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/maniacalmm/rust_mandelbrot_set:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] fa27f70002166004fa0116346b07ca82bf752bfe4e3dce98c1ce964986b55ad6
[INFO] running `"docker" "start" "-a" "fa27f70002166004fa0116346b07ca82bf752bfe4e3dce98c1ce964986b55ad6"`
[INFO] [stderr]     Checking rayon v0.4.3
[INFO] [stderr]     Checking png v0.7.0
[INFO] [stderr]    Compiling rocket_http v0.4.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking image v0.13.0
[INFO] [stderr]    Compiling rocket_codegen v0.4.0
[INFO] [stderr]     Checking rocket v0.4.0
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `thread`, `time`
[INFO] [stderr]  --> src/routes/get.rs:5:11
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::{thread, time};
[INFO] [stderr]   |           ^^^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]   --> src/routes/mandel.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 | use std::io;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]   --> src/routes/mandel.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 | use std::io::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]   --> src/routes/mandel.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 | use std::fs::File;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]    --> src/routes/mandel.rs:140:5
[INFO] [stderr]     |
[INFO] [stderr] 140 | use std::io::Write;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `thread`, `time`
[INFO] [stderr]  --> src/routes/get.rs:5:11
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::{thread, time};
[INFO] [stderr]   |           ^^^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]   --> src/routes/mandel.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 | use std::io;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]   --> src/routes/mandel.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 | use std::io::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]   --> src/routes/mandel.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 | use std::fs::File;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]    --> src/routes/mandel.rs:140:5
[INFO] [stderr]     |
[INFO] [stderr] 140 | use std::io::Write;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.40s
[INFO] running `"docker" "inspect" "fa27f70002166004fa0116346b07ca82bf752bfe4e3dce98c1ce964986b55ad6"`
[INFO] running `"docker" "rm" "-f" "fa27f70002166004fa0116346b07ca82bf752bfe4e3dce98c1ce964986b55ad6"`
[INFO] [stdout] fa27f70002166004fa0116346b07ca82bf752bfe4e3dce98c1ce964986b55ad6