Dec 19 16:37:24.783 INFO checking genya0407/png_print against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 16:37:24.783 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 16:37:25.166 INFO [stdout] 793b5a65d897402b3ac352a8715859dd71303fce6ab1eacbb0c5b57a1f09f88b
Dec 19 16:37:25.168 INFO running `"docker" "start" "-a" "793b5a65d897402b3ac352a8715859dd71303fce6ab1eacbb0c5b57a1f09f88b"`
Dec 19 16:37:27.464 INFO [stderr]     Checking png_encoder v0.1.0 (/opt/crater/workdir)
Dec 19 16:37:27.972 INFO [stderr] warning: unused variable: `scanline`
Dec 19 16:37:27.972 INFO [stderr]   --> src/model.rs:98:25
Dec 19 16:37:27.972 INFO [stderr]    |
Dec 19 16:37:27.972 INFO [stderr] 98 |                     let scanline: Vec<Color> = match filter_method {
Dec 19 16:37:27.972 INFO [stderr]    |                         ^^^^^^^^ help: consider using `_scanline` instead
Dec 19 16:37:27.976 INFO [stderr]    |
Dec 19 16:37:27.976 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 16:37:27.976 INFO [stderr] 
Dec 19 16:37:28.022 INFO [stderr] warning: method is never used: `width`
Dec 19 16:37:28.022 INFO [stderr]   --> src/model.rs:66:5
Dec 19 16:37:28.022 INFO [stderr]    |
Dec 19 16:37:28.022 INFO [stderr] 66 |     pub fn width(&self) -> usize {
Dec 19 16:37:28.022 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:37:28.022 INFO [stderr]    |
Dec 19 16:37:28.022 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 16:37:28.022 INFO [stderr] 
Dec 19 16:37:28.022 INFO [stderr] warning: field is never used: `compression_method`
Dec 19 16:37:28.022 INFO [stderr]    --> src/model.rs:222:5
Dec 19 16:37:28.022 INFO [stderr]     |
Dec 19 16:37:28.022 INFO [stderr] 222 |     compression_method: u8,
Dec 19 16:37:28.022 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:37:28.022 INFO [stderr] 
Dec 19 16:37:28.023 INFO [stderr] warning: field is never used: `additional_flags`
Dec 19 16:37:28.023 INFO [stderr]    --> src/model.rs:223:5
Dec 19 16:37:28.023 INFO [stderr]     |
Dec 19 16:37:28.023 INFO [stderr] 223 |     additional_flags: u8,
Dec 19 16:37:28.023 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 16:37:28.023 INFO [stderr] 
Dec 19 16:37:28.023 INFO [stderr] warning: field is never used: `check_value`
Dec 19 16:37:28.023 INFO [stderr]    --> src/model.rs:225:5
Dec 19 16:37:28.023 INFO [stderr]     |
Dec 19 16:37:28.023 INFO [stderr] 225 |     check_value: u32,
Dec 19 16:37:28.024 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 19 16:37:28.024 INFO [stderr] 
Dec 19 16:37:28.048 INFO [stderr] warning: unused variable: `scanline`
Dec 19 16:37:28.048 INFO [stderr]   --> src/model.rs:98:25
Dec 19 16:37:28.048 INFO [stderr]    |
Dec 19 16:37:28.048 INFO [stderr] 98 |                     let scanline: Vec<Color> = match filter_method {
Dec 19 16:37:28.048 INFO [stderr]    |                         ^^^^^^^^ help: consider using `_scanline` instead
Dec 19 16:37:28.048 INFO [stderr]    |
Dec 19 16:37:28.049 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 16:37:28.049 INFO [stderr] 
Dec 19 16:37:28.096 INFO [stderr] warning: method is never used: `width`
Dec 19 16:37:28.096 INFO [stderr]   --> src/model.rs:66:5
Dec 19 16:37:28.096 INFO [stderr]    |
Dec 19 16:37:28.096 INFO [stderr] 66 |     pub fn width(&self) -> usize {
Dec 19 16:37:28.096 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:37:28.096 INFO [stderr]    |
Dec 19 16:37:28.096 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 16:37:28.097 INFO [stderr] 
Dec 19 16:37:28.097 INFO [stderr] warning: field is never used: `compression_method`
Dec 19 16:37:28.097 INFO [stderr]    --> src/model.rs:222:5
Dec 19 16:37:28.097 INFO [stderr]     |
Dec 19 16:37:28.097 INFO [stderr] 222 |     compression_method: u8,
Dec 19 16:37:28.097 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:37:28.097 INFO [stderr] 
Dec 19 16:37:28.097 INFO [stderr] warning: field is never used: `additional_flags`
Dec 19 16:37:28.097 INFO [stderr]    --> src/model.rs:223:5
Dec 19 16:37:28.097 INFO [stderr]     |
Dec 19 16:37:28.097 INFO [stderr] 223 |     additional_flags: u8,
Dec 19 16:37:28.097 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 16:37:28.097 INFO [stderr] 
Dec 19 16:37:28.098 INFO [stderr] warning: field is never used: `check_value`
Dec 19 16:37:28.098 INFO [stderr]    --> src/model.rs:225:5
Dec 19 16:37:28.098 INFO [stderr]     |
Dec 19 16:37:28.098 INFO [stderr] 225 |     check_value: u32,
Dec 19 16:37:28.098 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 19 16:37:28.098 INFO [stderr] 
Dec 19 16:37:28.154 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
Dec 19 16:37:29.305 INFO running `"docker" "inspect" "793b5a65d897402b3ac352a8715859dd71303fce6ab1eacbb0c5b57a1f09f88b"`
Dec 19 16:37:29.604 INFO running `"docker" "rm" "-f" "793b5a65d897402b3ac352a8715859dd71303fce6ab1eacbb0c5b57a1f09f88b"`
Dec 19 16:37:29.948 INFO [stdout] 793b5a65d897402b3ac352a8715859dd71303fce6ab1eacbb0c5b57a1f09f88b