[INFO] updating cached repository DeltaManiac/mandlebrot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/DeltaManiac/mandlebrot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/DeltaManiac/mandlebrot" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/DeltaManiac/mandlebrot"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/DeltaManiac/mandlebrot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/DeltaManiac/mandlebrot" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/DeltaManiac/mandlebrot"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/DeltaManiac/mandlebrot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8afbf338461a3f6db8b8c6cd91cbb2087e67026e
[INFO] sha for GitHub repo DeltaManiac/mandlebrot: 8afbf338461a3f6db8b8c6cd91cbb2087e67026e
[INFO] validating manifest of DeltaManiac/mandlebrot on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of DeltaManiac/mandlebrot on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing DeltaManiac/mandlebrot
[INFO] finished frobbing DeltaManiac/mandlebrot
[INFO] frobbed toml for DeltaManiac/mandlebrot written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/DeltaManiac/mandlebrot/Cargo.toml
[INFO] started frobbing DeltaManiac/mandlebrot
[INFO] finished frobbing DeltaManiac/mandlebrot
[INFO] frobbed toml for DeltaManiac/mandlebrot written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/DeltaManiac/mandlebrot/Cargo.toml
[INFO] crate DeltaManiac/mandlebrot already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking DeltaManiac/mandlebrot against try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-4/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/DeltaManiac/mandlebrot:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] df71a18e0bf401115da39a7ecb6f2db04d8ff99d0a377a91e86c76485a068b32
[INFO] running `"docker" "start" "-a" "df71a18e0bf401115da39a7ecb6f2db04d8ff99d0a377a91e86c76485a068b32"`
[INFO] [stderr]     Checking num-complex v0.2.0
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking crossbeam v0.4.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking tiff v0.2.1
[INFO] [stderr]     Checking image v0.20.0
[INFO] [stderr]     Checking txt_adv v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::io::Write;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::io::Write;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.96s
[INFO] running `"docker" "inspect" "df71a18e0bf401115da39a7ecb6f2db04d8ff99d0a377a91e86c76485a068b32"`
[INFO] running `"docker" "rm" "-f" "df71a18e0bf401115da39a7ecb6f2db04d8ff99d0a377a91e86c76485a068b32"`
[INFO] [stdout] df71a18e0bf401115da39a7ecb6f2db04d8ff99d0a377a91e86c76485a068b32