[INFO] updating cached repository genya0407/png_print
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/genya0407/png_print
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/genya0407/png_print" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/genya0407/png_print"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/genya0407/png_print'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/genya0407/png_print" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/genya0407/png_print"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/genya0407/png_print'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a562b235595f3f61f2ce56057035952802e3e097
[INFO] sha for GitHub repo genya0407/png_print: a562b235595f3f61f2ce56057035952802e3e097
[INFO] validating manifest of genya0407/png_print on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of genya0407/png_print on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing genya0407/png_print
[INFO] finished frobbing genya0407/png_print
[INFO] frobbed toml for genya0407/png_print written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/genya0407/png_print/Cargo.toml
[INFO] started frobbing genya0407/png_print
[INFO] finished frobbing genya0407/png_print
[INFO] frobbed toml for genya0407/png_print written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/genya0407/png_print/Cargo.toml
[INFO] crate genya0407/png_print already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking genya0407/png_print against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-4/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/genya0407/png_print:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4081a7027c0511febd9619ccfd5a31b80dc06dc491980a7b1590d59170e9d64c
[INFO] running `"docker" "start" "-a" "4081a7027c0511febd9619ccfd5a31b80dc06dc491980a7b1590d59170e9d64c"`
[INFO] [stderr]     Checking png_encoder v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `scanline`
[INFO] [stderr]   --> src/model.rs:98:25
[INFO] [stderr]    |
[INFO] [stderr] 98 |                     let scanline: Vec<Color> = match filter_method {
[INFO] [stderr]    |                         ^^^^^^^^ help: consider prefixing with an underscore: `_scanline`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scanline`
[INFO] [stderr]   --> src/model.rs:98:25
[INFO] [stderr]    |
[INFO] [stderr] 98 |                     let scanline: Vec<Color> = match filter_method {
[INFO] [stderr]    |                         ^^^^^^^^ help: consider prefixing with an underscore: `_scanline`
[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/model.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |             let mut scanline = reversed_pixels[scanline_start..next_scanline_start].to_vec();
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/model.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |             let mut scanline = reversed_pixels[scanline_start..next_scanline_start].to_vec();
[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: method is never used: `width`
[INFO] [stderr]   --> src/model.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn width(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `compression_method`
[INFO] [stderr]    --> src/model.rs:222:5
[INFO] [stderr]     |
[INFO] [stderr] 222 |     compression_method: u8,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `additional_flags`
[INFO] [stderr]    --> src/model.rs:223:5
[INFO] [stderr]     |
[INFO] [stderr] 223 |     additional_flags: u8,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `check_value`
[INFO] [stderr]    --> src/model.rs:225:5
[INFO] [stderr]     |
[INFO] [stderr] 225 |     check_value: u32,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `width`
[INFO] [stderr]   --> src/model.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn width(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `compression_method`
[INFO] [stderr]    --> src/model.rs:222:5
[INFO] [stderr]     |
[INFO] [stderr] 222 |     compression_method: u8,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `additional_flags`
[INFO] [stderr]    --> src/model.rs:223:5
[INFO] [stderr]     |
[INFO] [stderr] 223 |     additional_flags: u8,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `check_value`
[INFO] [stderr]    --> src/model.rs:225:5
[INFO] [stderr]     |
[INFO] [stderr] 225 |     check_value: u32,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "4081a7027c0511febd9619ccfd5a31b80dc06dc491980a7b1590d59170e9d64c"`
[INFO] running `"docker" "rm" "-f" "4081a7027c0511febd9619ccfd5a31b80dc06dc491980a7b1590d59170e9d64c"`
[INFO] [stdout] 4081a7027c0511febd9619ccfd5a31b80dc06dc491980a7b1590d59170e9d64c