[INFO] cloning repository https://github.com/IndigoLily/mandelbrot.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/IndigoLily/mandelbrot.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIndigoLily%2Fmandelbrot.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIndigoLily%2Fmandelbrot.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 877172e817daf0c3ce3b0c9a35443ab5261f1809
[INFO] checking IndigoLily/mandelbrot.rs against master#32c26302620b2dbbe0a2291f1969bc0b1622ae59 for pr-95755
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIndigoLily%2Fmandelbrot.rs" "/workspace/builds/worker-56/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-56/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/IndigoLily/mandelbrot.rs on toolchain 32c26302620b2dbbe0a2291f1969bc0b1622ae59
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32c26302620b2dbbe0a2291f1969bc0b1622ae59" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/IndigoLily/mandelbrot.rs
[INFO] finished tweaking git repo https://github.com/IndigoLily/mandelbrot.rs
[INFO] tweaked toml for git repo https://github.com/IndigoLily/mandelbrot.rs written to /workspace/builds/worker-56/source/Cargo.toml
[INFO] crate git repo https://github.com/IndigoLily/mandelbrot.rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32c26302620b2dbbe0a2291f1969bc0b1622ae59" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atomic-counter v1.0.1
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[INFO] [stderr]   Downloaded phf v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+32c26302620b2dbbe0a2291f1969bc0b1622ae59" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c89dc7a47116ef1a604a5ead01cbc976d10408db3ebd1dc3bdab10fddc540d7
[INFO] running `Command { std: "docker" "start" "-a" "4c89dc7a47116ef1a604a5ead01cbc976d10408db3ebd1dc3bdab10fddc540d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c89dc7a47116ef1a604a5ead01cbc976d10408db3ebd1dc3bdab10fddc540d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c89dc7a47116ef1a604a5ead01cbc976d10408db3ebd1dc3bdab10fddc540d7", kill_on_drop: false }`
[INFO] [stdout] 4c89dc7a47116ef1a604a5ead01cbc976d10408db3ebd1dc3bdab10fddc540d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+32c26302620b2dbbe0a2291f1969bc0b1622ae59" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57ad8587a3bb6f7e98c419902299140d941daf733ca238353ea39f4c922147dd
[INFO] running `Command { std: "docker" "start" "-a" "57ad8587a3bb6f7e98c419902299140d941daf733ca238353ea39f4c922147dd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.117
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[INFO] [stderr]    Compiling palette_derive v0.6.0
[INFO] [stderr]     Checking librot-rs v0.1.0 (/opt/rustwide/workdir/librot-rs)
[INFO] [stdout] warning: unused imports: `AddAssign`, `Add`, `DivAssign`, `Div`
[INFO] [stdout]  --> librot-rs/src/colour.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Add, AddAssign, Div, DivAssign, Index};
[INFO] [stdout]   |                ^^^  ^^^^^^^^^  ^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Srgb` is imported redundantly
[INFO] [stdout]    --> librot-rs/src/colour.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 12  | pub use palette::{Pixel, Srgb, rgb::RgbStandard, encoding};
[INFO] [stdout]     |                          ---- the item `Srgb` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 152 |         use palette::rgb::Srgb;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AddAssign`, `Add`, `DivAssign`, `Div`
[INFO] [stdout]  --> librot-rs/src/colour.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Add, AddAssign, Div, DivAssign, Index};
[INFO] [stdout]   |                ^^^  ^^^^^^^^^  ^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Srgb` is imported redundantly
[INFO] [stdout]    --> librot-rs/src/colour.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 12  | pub use palette::{Pixel, Srgb, rgb::RgbStandard, encoding};
[INFO] [stdout]     |                          ---- the item `Srgb` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 152 |         use palette::rgb::Srgb;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking jemallocator v0.3.2
[INFO] [stderr]     Checking brot-rs v0.1.0 (/opt/rustwide/workdir/brot-rs)
[INFO] [stdout] warning: unused imports: `File`, `env`
[INFO] [stdout]   --> brot-rs/src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     env,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 11 |     io::Write,
[INFO] [stdout] 12 |     fs::{self, File},
[INFO] [stdout]    |                ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `File`, `env`
[INFO] [stdout]   --> brot-rs/src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     env,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 11 |     io::Write,
[INFO] [stdout] 12 |     fs::{self, File},
[INFO] [stdout]    |                ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 34s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "57ad8587a3bb6f7e98c419902299140d941daf733ca238353ea39f4c922147dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57ad8587a3bb6f7e98c419902299140d941daf733ca238353ea39f4c922147dd", kill_on_drop: false }`
[INFO] [stdout] 57ad8587a3bb6f7e98c419902299140d941daf733ca238353ea39f4c922147dd