[INFO] updating cached repository wahtak/rust-mandelbrot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wahtak/rust-mandelbrot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wahtak/rust-mandelbrot" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/wahtak/rust-mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/wahtak/rust-mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wahtak/rust-mandelbrot" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/wahtak/rust-mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/wahtak/rust-mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 517952f69400d806413954f7f69399768c16cc42
[INFO] sha for GitHub repo wahtak/rust-mandelbrot: 517952f69400d806413954f7f69399768c16cc42
[INFO] validating manifest of wahtak/rust-mandelbrot on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of wahtak/rust-mandelbrot on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing wahtak/rust-mandelbrot
[INFO] finished frobbing wahtak/rust-mandelbrot
[INFO] frobbed toml for wahtak/rust-mandelbrot written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/wahtak/rust-mandelbrot/Cargo.toml
[INFO] started frobbing wahtak/rust-mandelbrot
[INFO] finished frobbing wahtak/rust-mandelbrot
[INFO] frobbed toml for wahtak/rust-mandelbrot written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/wahtak/rust-mandelbrot/Cargo.toml
[INFO] crate wahtak/rust-mandelbrot already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking wahtak/rust-mandelbrot against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-2/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/wahtak/rust-mandelbrot:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 182fc04793920678c034116d07cd2a4b163828186c038fb313a0402501c52cf1
[INFO] running `"docker" "start" "-a" "182fc04793920678c034116d07cd2a4b163828186c038fb313a0402501c52cf1"`
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking num-bigint v0.2.2
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking image v0.21.1
[INFO] [stderr]     Checking rust_mandelbrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/draw.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn draw(color_function: &Fn(u32, u32) -> image::Rgb<u8>) -> image::RgbImage {
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32, u32) -> image::Rgb<u8>`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/draw.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn draw(color_function: &Fn(u32, u32) -> image::Rgb<u8>) -> image::RgbImage {
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32, u32) -> image::Rgb<u8>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mandelbrot.rs:21:49
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn mandelbrot_function(c: Complex64) -> Box<Fn(Complex64) -> Complex64> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Complex64) -> Complex64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mandelbrot.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 |     function: &Fn(T) -> T,
[INFO] [stderr]    |                ^^^^^^^^^^ help: use `dyn`: `dyn Fn(T) -> T`
[INFO] [stderr] 
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mandelbrot.rs:21:49
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn mandelbrot_function(c: Complex64) -> Box<Fn(Complex64) -> Complex64> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Complex64) -> Complex64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mandelbrot.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 |     function: &Fn(T) -> T,
[INFO] [stderr]    |                ^^^^^^^^^^ help: use `dyn`: `dyn Fn(T) -> T`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `draw`
[INFO] [stderr]  --> src/draw.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn draw(color_function: &Fn(u32, u32) -> image::Rgb<u8>) -> image::RgbImage {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.15s
[INFO] running `"docker" "inspect" "182fc04793920678c034116d07cd2a4b163828186c038fb313a0402501c52cf1"`
[INFO] running `"docker" "rm" "-f" "182fc04793920678c034116d07cd2a4b163828186c038fb313a0402501c52cf1"`
[INFO] [stdout] 182fc04793920678c034116d07cd2a4b163828186c038fb313a0402501c52cf1