[INFO] fetching crate purrmitive 0.1.3...
[INFO] testing purrmitive-0.1.3 against 1.49.0 for beta-1.50-1
[INFO] extracting crate purrmitive 0.1.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate purrmitive 0.1.3 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate purrmitive 0.1.3
[INFO] finished tweaking crates.io crate purrmitive 0.1.3
[INFO] tweaked toml for crates.io crate purrmitive 0.1.3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate purrmitive 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5ec62ad93d2c96f4cf9f76552e41832245e93c82b4f86a7998aa59f9e0c1a4c
[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" "d5ec62ad93d2c96f4cf9f76552e41832245e93c82b4f86a7998aa59f9e0c1a4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5ec62ad93d2c96f4cf9f76552e41832245e93c82b4f86a7998aa59f9e0c1a4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5ec62ad93d2c96f4cf9f76552e41832245e93c82b4f86a7998aa59f9e0c1a4c", kill_on_drop: false }`
[INFO] [stdout] d5ec62ad93d2c96f4cf9f76552e41832245e93c82b4f86a7998aa59f9e0c1a4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37aa8674c2a333dd8489884c1846dbddad5cdb240b67e7d4f75737f9739711db
[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" "37aa8674c2a333dd8489884c1846dbddad5cdb240b67e7d4f75737f9739711db", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling bytemuck v1.3.1
[INFO] [stderr]    Compiling dyn-fmt v0.3.0
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling crossbeam-channel v0.4.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling tiff v0.5.0
[INFO] [stderr]    Compiling png v0.16.7
[INFO] [stderr]    Compiling nsvg v0.5.1
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rand_distr v0.2.2
[INFO] [stderr]    Compiling jpeg-decoder v0.1.20
[INFO] [stderr]    Compiling image v0.23.8
[INFO] [stderr]    Compiling purrmitive v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::graphics::Point`
[INFO] [stdout]  --> src/graphics/scanline.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::graphics::Point;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `r` is never read
[INFO] [stdout]    --> src/core/algo.rs:195:9
[INFO] [stdout]     |
[INFO] [stdout] 195 |     let mut r = 0;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `g` is never read
[INFO] [stdout]    --> src/core/algo.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |     let mut g = 0;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]    --> src/core/algo.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |     let mut b = 0;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]    --> src/graphics/raster.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |     let rhs = sy > 0;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lhs`
[INFO] [stdout]    --> src/graphics/raster.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |     let lhs = sy < 0;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_lhs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `xy` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let mut xy: i32 = 0;
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dx` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |     let mut dx: f64 = 0.;
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dy` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let mut dy: f64 = 0.;
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |     let mut err: f64 = 0.;
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `r` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 244 |     let mut r: f64 = 0.;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/graphics/raster.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 126 |     mut x1: i32,
[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: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.84s
[INFO] running `Command { std: "docker" "inspect" "37aa8674c2a333dd8489884c1846dbddad5cdb240b67e7d4f75737f9739711db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37aa8674c2a333dd8489884c1846dbddad5cdb240b67e7d4f75737f9739711db", kill_on_drop: false }`
[INFO] [stdout] 37aa8674c2a333dd8489884c1846dbddad5cdb240b67e7d4f75737f9739711db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b86cae6a448059b9c94fb7e54555c4aa139913c3db2403e8ef35d2f71bc21bf0
[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" "b86cae6a448059b9c94fb7e54555c4aa139913c3db2403e8ef35d2f71bc21bf0", kill_on_drop: false }`
[INFO] [stderr]    Compiling purrmitive v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::graphics::Point`
[INFO] [stdout]  --> src/graphics/scanline.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::graphics::Point;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `r` is never read
[INFO] [stdout]    --> src/core/algo.rs:195:9
[INFO] [stdout]     |
[INFO] [stdout] 195 |     let mut r = 0;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `g` is never read
[INFO] [stdout]    --> src/core/algo.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |     let mut g = 0;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]    --> src/core/algo.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |     let mut b = 0;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]    --> src/graphics/raster.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |     let rhs = sy > 0;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lhs`
[INFO] [stdout]    --> src/graphics/raster.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |     let lhs = sy < 0;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_lhs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `xy` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let mut xy: i32 = 0;
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dx` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |     let mut dx: f64 = 0.;
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dy` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let mut dy: f64 = 0.;
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |     let mut err: f64 = 0.;
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `r` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 244 |     let mut r: f64 = 0.;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/graphics/raster.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 126 |     mut x1: i32,
[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: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::graphics::Point`
[INFO] [stdout]  --> src/graphics/scanline.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::graphics::Point;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `r` is never read
[INFO] [stdout]    --> src/core/algo.rs:195:9
[INFO] [stdout]     |
[INFO] [stdout] 195 |     let mut r = 0;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `g` is never read
[INFO] [stdout]    --> src/core/algo.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |     let mut g = 0;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]    --> src/core/algo.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |     let mut b = 0;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]    --> src/graphics/raster.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |     let rhs = sy > 0;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lhs`
[INFO] [stdout]    --> src/graphics/raster.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |     let lhs = sy < 0;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_lhs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `xy` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let mut xy: i32 = 0;
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dx` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |     let mut dx: f64 = 0.;
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dy` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let mut dy: f64 = 0.;
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |     let mut err: f64 = 0.;
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `r` is never read
[INFO] [stdout]    --> src/graphics/raster.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 244 |     let mut r: f64 = 0.;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/graphics/raster.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 126 |     mut x1: i32,
[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: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.61s
[INFO] running `Command { std: "docker" "inspect" "b86cae6a448059b9c94fb7e54555c4aa139913c3db2403e8ef35d2f71bc21bf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b86cae6a448059b9c94fb7e54555c4aa139913c3db2403e8ef35d2f71bc21bf0", kill_on_drop: false }`
[INFO] [stdout] b86cae6a448059b9c94fb7e54555c4aa139913c3db2403e8ef35d2f71bc21bf0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 05d0dfd1f4b2e70fa8839db7cf74bdbeb155349466bab4be7a89bf7eff2e1dfd
[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" "05d0dfd1f4b2e70fa8839db7cf74bdbeb155349466bab4be7a89bf7eff2e1dfd", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `crate::graphics::Point`
[INFO] [stdout] running 4 tests
[INFO] [stderr]  --> src/graphics/scanline.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::graphics::Point;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/core/algo.rs:195:9
[INFO] [stderr]     |
[INFO] [stderr] 195 |     let mut r = 0;
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `g` is never read
[INFO] [stderr]    --> src/core/algo.rs:196:9
[INFO] [stderr]     |
[INFO] [stderr] 196 |     let mut g = 0;
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `b` is never read
[INFO] [stderr]    --> src/core/algo.rs:197:9
[INFO] [stderr]     |
[INFO] [stderr] 197 |     let mut b = 0;
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rhs`
[INFO] [stderr]    --> src/graphics/raster.rs:141:9
[INFO] [stderr]     |
[INFO] [stderr] 141 |     let rhs = sy > 0;
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lhs`
[INFO] [stderr]    --> src/graphics/raster.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |     let lhs = sy < 0;
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_lhs`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `xy` is never read
[INFO] [stderr]    --> src/graphics/raster.rs:144:9
[INFO] [stderr]     |
[INFO] [stderr] 144 |     let mut xy: i32 = 0;
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `dx` is never read
[INFO] [stderr]    --> src/graphics/raster.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |     let mut dx: f64 = 0.;
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `dy` is never read
[INFO] [stderr]    --> src/graphics/raster.rs:146:9
[INFO] [stderr]     |
[INFO] [stderr] 146 |     let mut dy: f64 = 0.;
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `err` is never read
[INFO] [stderr]    --> src/graphics/raster.rs:147:9
[INFO] [stderr]     |
[INFO] [stderr] 147 |     let mut err: f64 = 0.;
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/graphics/raster.rs:244:9
[INFO] [stderr]     |
[INFO] [stderr] 244 |     let mut r: f64 = 0.;
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/graphics/raster.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     mut x1: i32,
[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: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::graphics::Point`
[INFO] [stderr]  --> src/graphics/scanline.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::graphics::Point;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/core/algo.rs:195:9
[INFO] [stderr]     |
[INFO] [stderr] 195 |     let mut r = 0;
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `g` is never read
[INFO] [stderr]    --> src/core/algo.rs:196:9
[INFO] [stderr]     |
[INFO] [stderr] 196 |     let mut g = 0;
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `b` is never read
[INFO] [stderr]    --> src/core/algo.rs:197:9
[INFO] [stderr]     |
[INFO] [stderr] 197 |     let mut b = 0;
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rhs`
[INFO] [stderr]    --> src/graphics/raster.rs:141:9
[INFO] [stderr]     |
[INFO] [stderr] 141 |     let rhs = sy > 0;
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lhs`
[INFO] [stderr]    --> src/graphics/raster.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |     let lhs = sy < 0;
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_lhs`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `xy` is never read
[INFO] [stderr]    --> src/graphics/raster.rs:144:9
[INFO] [stderr]     |
[INFO] [stderr] 144 |     let mut xy: i32 = 0;
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `dx` is never read
[INFO] [stderr]    --> src/graphics/raster.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |     let mut dx: f64 = 0.;
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `dy` is never read
[INFO] [stderr]    --> src/graphics/raster.rs:146:9
[INFO] [stderr]     |
[INFO] [stderr] 146 |     let mut dy: f64 = 0.;
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `err` is never read
[INFO] [stderr]    --> src/graphics/raster.rs:147:9
[INFO] [stderr]     |
[INFO] [stderr] 147 |     let mut err: f64 = 0.;
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/graphics/raster.rs:244:9
[INFO] [stderr]     |
[INFO] [stderr] 244 |     let mut r: f64 = 0.;
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/graphics/raster.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     mut x1: i32,
[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: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/purrmitive-d6a680f816661a78
[INFO] [stdout] test core::algo::tests::test_parse_hex_color ... ok
[INFO] [stdout] test core::algo::tests::test_compute_color ... ok
[INFO] [stdout] test core::algo::tests::test_diff_full ... ok
[INFO] [stderr]    Doc-tests purrmitive
[INFO] [stdout] test core::algo::tests::test_diff_partial ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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" "05d0dfd1f4b2e70fa8839db7cf74bdbeb155349466bab4be7a89bf7eff2e1dfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05d0dfd1f4b2e70fa8839db7cf74bdbeb155349466bab4be7a89bf7eff2e1dfd", kill_on_drop: false }`
[INFO] [stdout] 05d0dfd1f4b2e70fa8839db7cf74bdbeb155349466bab4be7a89bf7eff2e1dfd