Nov 28 08:27:45.130 INFO checking boustrophedon/png-concealer against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 08:27:45.131 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-0/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 28 08:27:45.653 INFO [stdout] 005063a5b9308465f2f953d455fbfc83b5bd4ebcbb715d4481bf5d10e4b86ee6
Nov 28 08:27:45.655 INFO running `"docker" "start" "-a" "005063a5b9308465f2f953d455fbfc83b5bd4ebcbb715d4481bf5d10e4b86ee6"`
Nov 28 08:27:47.796 INFO [stderr] usermod: no changes
Nov 28 08:27:47.988 INFO [stderr]     Checking structopt v0.2.8
Nov 28 08:27:48.866 INFO [stderr]     Checking png-concealer v0.1.0 (/source)
Nov 28 08:27:50.622 INFO [stderr] warning: unused `#[macro_use]` import
Nov 28 08:27:50.622 INFO [stderr]  --> src/main.rs:5:1
Nov 28 08:27:50.623 INFO [stderr]   |
Nov 28 08:27:50.624 INFO [stderr] 5 | #[macro_use]
Nov 28 08:27:50.624 INFO [stderr]   | ^^^^^^^^^^^^
Nov 28 08:27:50.625 INFO [stderr]   |
Nov 28 08:27:50.625 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 08:27:50.625 INFO [stderr] 
Nov 28 08:27:50.728 INFO [stderr] warning: unused `#[macro_use]` import
Nov 28 08:27:50.728 INFO [stderr]  --> src/main.rs:5:1
Nov 28 08:27:50.728 INFO [stderr]   |
Nov 28 08:27:50.728 INFO [stderr] 5 | #[macro_use]
Nov 28 08:27:50.728 INFO [stderr]   | ^^^^^^^^^^^^
Nov 28 08:27:50.728 INFO [stderr]   |
Nov 28 08:27:50.728 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 08:27:50.728 INFO [stderr] 
Nov 28 08:27:50.826 INFO [stderr] warning: unused variable: `input_png`
Nov 28 08:27:50.826 INFO [stderr]    --> src/main.rs:109:16
Nov 28 08:27:50.826 INFO [stderr]     |
Nov 28 08:27:50.826 INFO [stderr] 109 | fn decode_file(input_png: PathBuf, output: PathBuf) {
Nov 28 08:27:50.826 INFO [stderr]     |                ^^^^^^^^^ help: consider using `_input_png` instead
Nov 28 08:27:50.826 INFO [stderr]     |
Nov 28 08:27:50.826 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 28 08:27:50.826 INFO [stderr] 
Nov 28 08:27:50.826 INFO [stderr] warning: unused variable: `output`
Nov 28 08:27:50.826 INFO [stderr]    --> src/main.rs:109:36
Nov 28 08:27:50.826 INFO [stderr]     |
Nov 28 08:27:50.826 INFO [stderr] 109 | fn decode_file(input_png: PathBuf, output: PathBuf) {
Nov 28 08:27:50.826 INFO [stderr]     |                                    ^^^^^^ help: consider using `_output` instead
Nov 28 08:27:50.826 INFO [stderr] 
Nov 28 08:27:50.871 INFO [stderr] warning: constant `max_length` should have an upper case name such as `MAX_LENGTH`
Nov 28 08:27:50.871 INFO [stderr]   --> src/main.rs:51:5
Nov 28 08:27:50.871 INFO [stderr]    |
Nov 28 08:27:50.871 INFO [stderr] 51 |     const max_length: usize = (1<<31) - 1; // as defined in png spec
Nov 28 08:27:50.871 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:27:50.871 INFO [stderr]    |
Nov 28 08:27:50.871 INFO [stderr]    = note: #[warn(non_upper_case_globals)] on by default
Nov 28 08:27:50.871 INFO [stderr] 
Nov 28 08:27:50.975 INFO [stderr] warning: unused variable: `input_png`
Nov 28 08:27:50.975 INFO [stderr]    --> src/main.rs:109:16
Nov 28 08:27:50.975 INFO [stderr]     |
Nov 28 08:27:50.975 INFO [stderr] 109 | fn decode_file(input_png: PathBuf, output: PathBuf) {
Nov 28 08:27:50.975 INFO [stderr]     |                ^^^^^^^^^ help: consider using `_input_png` instead
Nov 28 08:27:50.975 INFO [stderr]     |
Nov 28 08:27:50.975 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 28 08:27:50.975 INFO [stderr] 
Nov 28 08:27:50.975 INFO [stderr] warning: unused variable: `output`
Nov 28 08:27:50.975 INFO [stderr]    --> src/main.rs:109:36
Nov 28 08:27:50.975 INFO [stderr]     |
Nov 28 08:27:50.975 INFO [stderr] 109 | fn decode_file(input_png: PathBuf, output: PathBuf) {
Nov 28 08:27:50.975 INFO [stderr]     |                                    ^^^^^^ help: consider using `_output` instead
Nov 28 08:27:50.975 INFO [stderr] 
Nov 28 08:27:51.006 INFO [stderr] warning: constant `max_length` should have an upper case name such as `MAX_LENGTH`
Nov 28 08:27:51.006 INFO [stderr]   --> src/main.rs:51:5
Nov 28 08:27:51.007 INFO [stderr]    |
Nov 28 08:27:51.007 INFO [stderr] 51 |     const max_length: usize = (1<<31) - 1; // as defined in png spec
Nov 28 08:27:51.007 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:27:51.007 INFO [stderr]    |
Nov 28 08:27:51.007 INFO [stderr]    = note: #[warn(non_upper_case_globals)] on by default
Nov 28 08:27:51.007 INFO [stderr] 
Nov 28 08:27:51.052 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.23s
Nov 28 08:27:51.064 INFO [stderr] su: No module specific data is present
Nov 28 08:27:52.668 INFO running `"docker" "inspect" "005063a5b9308465f2f953d455fbfc83b5bd4ebcbb715d4481bf5d10e4b86ee6"`
Nov 28 08:27:52.996 INFO running `"docker" "rm" "-f" "005063a5b9308465f2f953d455fbfc83b5bd4ebcbb715d4481bf5d10e4b86ee6"`
Nov 28 08:27:53.304 INFO [stdout] 005063a5b9308465f2f953d455fbfc83b5bd4ebcbb715d4481bf5d10e4b86ee6