[INFO] fetching crate polygon2 0.3.0...
[INFO] testing polygon2-0.3.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate polygon2 0.3.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate polygon2 0.3.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polygon2 0.3.0
[INFO] finished tweaking crates.io crate polygon2 0.3.0
[INFO] tweaked toml for crates.io crate polygon2 0.3.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--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 vec3 v0.2.1
[INFO] [stderr]   Downloaded cast_trait v0.1.2
[INFO] [stderr]   Downloaded vec2 v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebbdeec27484869f0b3f346d4862cc7ba4357f1a2df0fe94a713eb7148cc7b21
[INFO] running `Command { std: "docker" "start" "-a" "ebbdeec27484869f0b3f346d4862cc7ba4357f1a2df0fe94a713eb7148cc7b21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebbdeec27484869f0b3f346d4862cc7ba4357f1a2df0fe94a713eb7148cc7b21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebbdeec27484869f0b3f346d4862cc7ba4357f1a2df0fe94a713eb7148cc7b21", kill_on_drop: false }`
[INFO] [stdout] ebbdeec27484869f0b3f346d4862cc7ba4357f1a2df0fe94a713eb7148cc7b21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c34b21e7ee63a0d8ef5002ac2a1efa9e2951c2e7fc24f9659e19063c38ebb38
[INFO] running `Command { std: "docker" "start" "-a" "1c34b21e7ee63a0d8ef5002ac2a1efa9e2951c2e7fc24f9659e19063c38ebb38", kill_on_drop: false }`
[INFO] [stderr]    Compiling cast_trait v0.1.2
[INFO] [stderr]    Compiling vec3 v0.2.1
[INFO] [stderr]    Compiling vec2 v0.2.1
[INFO] [stderr]    Compiling polygon2 v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/point_in_rect.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         (minx < &p[0] && &p[0] < maxx && miny < &p[1] && &p[1] < maxy)
[INFO] [stdout]    |         ^                                                            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 24 -         (minx < &p[0] && &p[0] < maxx && miny < &p[1] && &p[1] < maxy)
[INFO] [stdout] 24 +         minx < &p[0] && &p[0] < maxx && miny < &p[1] && &p[1] < maxy
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/clipping/greiner_hormann/polygon.rs:205:41
[INFO] [stdout]     |
[INFO] [stdout] 205 | ...                   let mut is =
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/clipping/greiner_hormann/polygon.rs:207:41
[INFO] [stdout]     |
[INFO] [stdout] 207 | ...                   let mut ic = Vertex::new(i, alpha_c, true, false, false);
[INFO] [stdout]     |                           ----^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(alloc)]
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `alloc` has been stable since 1.36.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(alloc)]
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `polygon2` due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1c34b21e7ee63a0d8ef5002ac2a1efa9e2951c2e7fc24f9659e19063c38ebb38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c34b21e7ee63a0d8ef5002ac2a1efa9e2951c2e7fc24f9659e19063c38ebb38", kill_on_drop: false }`
[INFO] [stdout] 1c34b21e7ee63a0d8ef5002ac2a1efa9e2951c2e7fc24f9659e19063c38ebb38