[INFO] cloning repository https://github.com/TheSilvus/buddhabrot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TheSilvus/buddhabrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheSilvus%2Fbuddhabrot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheSilvus%2Fbuddhabrot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cfb5613add2f54259f36308137be4b9bc2bbda6c
[INFO] testing TheSilvus/buddhabrot against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheSilvus%2Fbuddhabrot" "/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/TheSilvus/buddhabrot on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/TheSilvus/buddhabrot
[INFO] finished tweaking git repo https://github.com/TheSilvus/buddhabrot
[INFO] tweaked toml for git repo https://github.com/TheSilvus/buddhabrot written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/TheSilvus/buddhabrot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded criterion-stats v0.2.5
[INFO] [stderr]   Downloaded criterion-plot v0.2.5
[INFO] [stderr]   Downloaded synstructure v0.10.0
[INFO] [stderr]   Downloaded itertools-num v0.1.2
[INFO] [stderr]   Downloaded criterion v0.2.5
[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" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a111b229ab793f06a8f1151a28098a7196994d33963c8ac6fb917f0f2c344169
[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" "a111b229ab793f06a8f1151a28098a7196994d33963c8ac6fb917f0f2c344169", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a111b229ab793f06a8f1151a28098a7196994d33963c8ac6fb917f0f2c344169", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a111b229ab793f06a8f1151a28098a7196994d33963c8ac6fb917f0f2c344169", kill_on_drop: false }`
[INFO] [stdout] a111b229ab793f06a8f1151a28098a7196994d33963c8ac6fb917f0f2c344169
[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=warn" "-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" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7997b16b24730bc5414dd13abdb6f285f3ad177d71638342da803fbca7d11268
[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" "7997b16b24730bc5414dd13abdb6f285f3ad177d71638342da803fbca7d11268", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling crossbeam-utils v0.5.0
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling smallvec v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.6.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling crossbeam-deque v0.5.2
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling rayon v1.0.2
[INFO] [stderr]    Compiling crossbeam-channel v0.2.6
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.15.13
[INFO] [stderr]    Compiling crossbeam v0.4.1
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling tiff v0.2.1
[INFO] [stderr]    Compiling image v0.20.0
[INFO] [stderr]    Compiling mandelbuddha v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::OpenOptions`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fs::OpenOptions;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/image.rs:58:39
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn map_to_image1(&self, map: &Fn(u32, u32) -> u8, color_type: file_image::ColorType) -> Image {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32, u32) -> u8`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/image.rs:79:39
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn map_to_image3(&self, map: &Fn(u32, u32) -> [u8; 3], color_type: file_image::ColorType) -> Image {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32, u32) -> [u8; 3]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/image.rs:99:33
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn map(&mut self, map: &Fn(u32) -> u32) -> &mut ImageData {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32) -> u32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/main.rs:399:10
[INFO] [stdout]     |
[INFO] [stdout] 399 | fn image(config: Config) {
[INFO] [stdout]     |          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/image.rs:30:17
[INFO] [stdout]    |
[INFO] [stdout] 30 |         for (i, mut value) in image1.data.iter_mut().enumerate() {
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "7997b16b24730bc5414dd13abdb6f285f3ad177d71638342da803fbca7d11268", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7997b16b24730bc5414dd13abdb6f285f3ad177d71638342da803fbca7d11268", kill_on_drop: false }`
[INFO] [stdout] 7997b16b24730bc5414dd13abdb6f285f3ad177d71638342da803fbca7d11268
[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=warn" "-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" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 312f46d0b086ff5d904213f1ed4d4f46702f2ec78a17ed871992342bf4d9fd94
[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" "312f46d0b086ff5d904213f1ed4d4f46702f2ec78a17ed871992342bf4d9fd94", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]    Compiling utf8-ranges v1.0.1
[INFO] [stderr]    Compiling cast v0.2.2
[INFO] [stderr]    Compiling same-file v1.0.3
[INFO] [stderr]    Compiling thread-scoped v1.0.2
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling log v0.4.5
[INFO] [stderr]    Compiling itertools v0.7.8
[INFO] [stderr]    Compiling regex-syntax v0.6.2
[INFO] [stderr]    Compiling term v0.5.1
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]    Compiling itertools-num v0.1.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling synstructure v0.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling walkdir v2.2.5
[INFO] [stderr]    Compiling criterion-stats v0.2.5
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]    Compiling aho-corasick v0.6.8
[INFO] [stderr]    Compiling csv-core v0.1.4
[INFO] [stderr]    Compiling criterion-plot v0.2.5
[INFO] [stderr]    Compiling simplelog v0.5.3
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling serde_json v1.0.32
[INFO] [stderr]    Compiling csv v1.0.2
[INFO] [stderr]    Compiling handlebars v0.32.4
[INFO] [stderr]    Compiling criterion v0.2.5
[INFO] [stderr]    Compiling mandelbuddha v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::OpenOptions`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fs::OpenOptions;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/image.rs:58:39
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn map_to_image1(&self, map: &Fn(u32, u32) -> u8, color_type: file_image::ColorType) -> Image {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32, u32) -> u8`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/image.rs:79:39
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn map_to_image3(&self, map: &Fn(u32, u32) -> [u8; 3], color_type: file_image::ColorType) -> Image {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32, u32) -> [u8; 3]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/image.rs:99:33
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn map(&mut self, map: &Fn(u32) -> u32) -> &mut ImageData {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32) -> u32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/main.rs:399:10
[INFO] [stdout]     |
[INFO] [stdout] 399 | fn image(config: Config) {
[INFO] [stdout]     |          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/image.rs:30:17
[INFO] [stdout]    |
[INFO] [stdout] 30 |         for (i, mut value) in image1.data.iter_mut().enumerate() {
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 15s
[INFO] running `Command { std: "docker" "inspect" "312f46d0b086ff5d904213f1ed4d4f46702f2ec78a17ed871992342bf4d9fd94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "312f46d0b086ff5d904213f1ed4d4f46702f2ec78a17ed871992342bf4d9fd94", kill_on_drop: false }`
[INFO] [stdout] 312f46d0b086ff5d904213f1ed4d4f46702f2ec78a17ed871992342bf4d9fd94
[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=warn" "-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" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2b41cc035d097be96db327340ba1893f583fbba94533830f1479fa981bab63a8
[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" "2b41cc035d097be96db327340ba1893f583fbba94533830f1479fa981bab63a8", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::fs::OpenOptions`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::fs::OpenOptions;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/image.rs:58:39
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn map_to_image1(&self, map: &Fn(u32, u32) -> u8, color_type: file_image::ColorType) -> Image {
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32, u32) -> 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/image.rs:79:39
[INFO] [stderr]    |
[INFO] [stderr] 79 |     pub fn map_to_image3(&self, map: &Fn(u32, u32) -> [u8; 3], color_type: file_image::ColorType) -> Image {
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32, u32) -> [u8; 3]`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/image.rs:99:33
[INFO] [stderr]    |
[INFO] [stderr] 99 |     pub fn map(&mut self, map: &Fn(u32) -> u32) -> &mut ImageData {
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32) -> u32`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `config`
[INFO] [stderr]    --> src/main.rs:399:10
[INFO] [stderr]     |
[INFO] [stderr] 399 | fn image(config: Config) {
[INFO] [stderr]     |          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/image.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 |         for (i, mut value) in image1.data.iter_mut().enumerate() {
[INFO] [stderr]    |                 ----^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.30s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mandelbuddha-6b7399adad83cf34
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2b41cc035d097be96db327340ba1893f583fbba94533830f1479fa981bab63a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b41cc035d097be96db327340ba1893f583fbba94533830f1479fa981bab63a8", kill_on_drop: false }`
[INFO] [stdout] 2b41cc035d097be96db327340ba1893f583fbba94533830f1479fa981bab63a8
