[INFO] fetching crate img-optimize 0.1.0...
[INFO] building img-optimize-0.1.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate img-optimize 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate img-optimize 0.1.0
[INFO] finished tweaking crates.io crate img-optimize 0.1.0
[INFO] tweaked toml for crates.io crate img-optimize 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate img-optimize 0.1.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate img-optimize 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] warning: variable `support_jpeg_xl` is assigned to, but never used
[INFO] [stdout]  --> src/encoder.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 |     #[allow(unused_mut)] let mut support_jpeg_xl = true;
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_support_jpeg_xl` instead
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `support_jpeg_xl` is never read
[INFO] [stdout]   --> src/encoder.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |             support_jpeg_xl = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `support_jpeg_xl` is assigned to, but never used
[INFO] [stdout]  --> src/encoder.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 |     #[allow(unused_mut)] let mut support_jpeg_xl = true;
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_support_jpeg_xl` instead
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `support_jpeg_xl` is never read
[INFO] [stdout]   --> src/encoder.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |             support_jpeg_xl = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `F16` and `F32` are never constructed
[INFO] [stdout]   --> src/structs.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum ImagePixels {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 14 |     F16(Vec<f16>),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 15 |     F32(Vec<f32>),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `allow_jpeg_xl` is never read
[INFO] [stdout]   --> src/structs.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct CompressionConfig {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub allow_jpeg_xl: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_png_image_rs` is never used
[INFO] [stdout]    --> src/encoder.rs:133:8
[INFO] [stdout]     |
[INFO] [stdout] 133 | pub fn encode_png_image_rs(im_info: ImageInfo) -> Vec<u8> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 32s
[INFO] running `Command { std: "docker" "inspect" "0674363f3823a02ac2a1df1d3e14643016feebb931cae0180a5e07d31edcf385", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0674363f3823a02ac2a1df1d3e14643016feebb931cae0180a5e07d31edcf385", kill_on_drop: false }`
[INFO] [stdout] 0674363f3823a02ac2a1df1d3e14643016feebb931cae0180a5e07d31edcf385
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5ba15d2ab5ad128c2f2d58b79750d05267bac0698b93676379f388aea3b7f36
[INFO] running `Command { std: "docker" "start" "-a" "a5ba15d2ab5ad128c2f2d58b79750d05267bac0698b93676379f388aea3b7f36", kill_on_drop: false }`
[INFO] [stderr]    Compiling img-optimize v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `support_jpeg_xl` is assigned to, but never used
[INFO] [stdout]  --> src/encoder.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 |     #[allow(unused_mut)] let mut support_jpeg_xl = true;
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_support_jpeg_xl` instead
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `support_jpeg_xl` is never read
[INFO] [stdout]   --> src/encoder.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |             support_jpeg_xl = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `support_jpeg_xl` is assigned to, but never used
[INFO] [stdout]  --> src/encoder.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 |     #[allow(unused_mut)] let mut support_jpeg_xl = true;
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_support_jpeg_xl` instead
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `support_jpeg_xl` is never read
[INFO] [stdout]   --> src/encoder.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |             support_jpeg_xl = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `F16` and `F32` are never constructed
[INFO] [stdout]   --> src/structs.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum ImagePixels {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 14 |     F16(Vec<f16>),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 15 |     F32(Vec<f32>),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `allow_jpeg_xl` is never read
[INFO] [stdout]   --> src/structs.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct CompressionConfig {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub allow_jpeg_xl: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_png_image_rs` is never used
[INFO] [stdout]    --> src/encoder.rs:133:8
[INFO] [stdout]     |
[INFO] [stdout] 133 | pub fn encode_png_image_rs(im_info: ImageInfo) -> Vec<u8> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `support_jpeg_xl` is assigned to, but never used
[INFO] [stdout]  --> src/encoder.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 |     #[allow(unused_mut)] let mut support_jpeg_xl = true;
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_support_jpeg_xl` instead
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `support_jpeg_xl` is never read
[INFO] [stdout]   --> src/encoder.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |             support_jpeg_xl = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "a5ba15d2ab5ad128c2f2d58b79750d05267bac0698b93676379f388aea3b7f36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5ba15d2ab5ad128c2f2d58b79750d05267bac0698b93676379f388aea3b7f36", kill_on_drop: false }`
[INFO] [stdout] a5ba15d2ab5ad128c2f2d58b79750d05267bac0698b93676379f388aea3b7f36