Dec 04 21:36:14.321 INFO checking boustrophedon/png-concealer against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 21:36:14.321 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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"`
Dec 04 21:36:14.879 INFO [stdout] e02a97173067d27b04acd8f0f11baf9e912b1a78eacd51edfd03fb6aa033d60f
Dec 04 21:36:14.881 INFO running `"docker" "start" "-a" "e02a97173067d27b04acd8f0f11baf9e912b1a78eacd51edfd03fb6aa033d60f"`
Dec 04 21:36:17.246 INFO [stderr] usermod: no changes
Dec 04 21:36:17.456 INFO [stderr]    Compiling syn v0.13.10
Dec 04 21:36:26.076 INFO [stderr]    Compiling structopt-derive v0.2.8
Dec 04 21:36:29.267 INFO [stderr]     Checking structopt v0.2.8
Dec 04 21:36:30.027 INFO [stderr]     Checking png-concealer v0.1.0 (/source)
Dec 04 21:36:31.475 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 21:36:31.475 INFO [stderr]  --> src/main.rs:5:1
Dec 04 21:36:31.475 INFO [stderr]   |
Dec 04 21:36:31.475 INFO [stderr] 5 | #[macro_use]
Dec 04 21:36:31.475 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 21:36:31.475 INFO [stderr]   |
Dec 04 21:36:31.475 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 21:36:31.475 INFO [stderr] 
Dec 04 21:36:31.563 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 21:36:31.563 INFO [stderr]  --> src/main.rs:5:1
Dec 04 21:36:31.563 INFO [stderr]   |
Dec 04 21:36:31.563 INFO [stderr] 5 | #[macro_use]
Dec 04 21:36:31.563 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 21:36:31.563 INFO [stderr]   |
Dec 04 21:36:31.563 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 21:36:31.563 INFO [stderr] 
Dec 04 21:36:31.603 INFO [stderr] warning: unused variable: `input_png`
Dec 04 21:36:31.603 INFO [stderr]    --> src/main.rs:109:16
Dec 04 21:36:31.603 INFO [stderr]     |
Dec 04 21:36:31.603 INFO [stderr] 109 | fn decode_file(input_png: PathBuf, output: PathBuf) {
Dec 04 21:36:31.603 INFO [stderr]     |                ^^^^^^^^^ help: consider using `_input_png` instead
Dec 04 21:36:31.603 INFO [stderr]     |
Dec 04 21:36:31.603 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 21:36:31.603 INFO [stderr] 
Dec 04 21:36:31.603 INFO [stderr] warning: unused variable: `output`
Dec 04 21:36:31.603 INFO [stderr]    --> src/main.rs:109:36
Dec 04 21:36:31.603 INFO [stderr]     |
Dec 04 21:36:31.603 INFO [stderr] 109 | fn decode_file(input_png: PathBuf, output: PathBuf) {
Dec 04 21:36:31.603 INFO [stderr]     |                                    ^^^^^^ help: consider using `_output` instead
Dec 04 21:36:31.603 INFO [stderr] 
Dec 04 21:36:31.617 INFO [stderr] warning: constant `max_length` should have an upper case name such as `MAX_LENGTH`
Dec 04 21:36:31.618 INFO [stderr]   --> src/main.rs:51:5
Dec 04 21:36:31.618 INFO [stderr]    |
Dec 04 21:36:31.618 INFO [stderr] 51 |     const max_length: usize = (1<<31) - 1; // as defined in png spec
Dec 04 21:36:31.618 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:36:31.618 INFO [stderr]    |
Dec 04 21:36:31.618 INFO [stderr]    = note: #[warn(non_upper_case_globals)] on by default
Dec 04 21:36:31.618 INFO [stderr] 
Dec 04 21:36:31.667 INFO [stderr] warning: unused variable: `input_png`
Dec 04 21:36:31.667 INFO [stderr]    --> src/main.rs:109:16
Dec 04 21:36:31.667 INFO [stderr]     |
Dec 04 21:36:31.667 INFO [stderr] 109 | fn decode_file(input_png: PathBuf, output: PathBuf) {
Dec 04 21:36:31.667 INFO [stderr]     |                ^^^^^^^^^ help: consider using `_input_png` instead
Dec 04 21:36:31.667 INFO [stderr]     |
Dec 04 21:36:31.667 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 21:36:31.667 INFO [stderr] 
Dec 04 21:36:31.667 INFO [stderr] warning: unused variable: `output`
Dec 04 21:36:31.667 INFO [stderr]    --> src/main.rs:109:36
Dec 04 21:36:31.667 INFO [stderr]     |
Dec 04 21:36:31.667 INFO [stderr] 109 | fn decode_file(input_png: PathBuf, output: PathBuf) {
Dec 04 21:36:31.667 INFO [stderr]     |                                    ^^^^^^ help: consider using `_output` instead
Dec 04 21:36:31.667 INFO [stderr] 
Dec 04 21:36:31.680 INFO [stderr] warning: constant `max_length` should have an upper case name such as `MAX_LENGTH`
Dec 04 21:36:31.680 INFO [stderr]   --> src/main.rs:51:5
Dec 04 21:36:31.680 INFO [stderr]    |
Dec 04 21:36:31.680 INFO [stderr] 51 |     const max_length: usize = (1<<31) - 1; // as defined in png spec
Dec 04 21:36:31.680 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:36:31.680 INFO [stderr]    |
Dec 04 21:36:31.680 INFO [stderr]    = note: #[warn(non_upper_case_globals)] on by default
Dec 04 21:36:31.680 INFO [stderr] 
Dec 04 21:36:31.707 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.41s
Dec 04 21:36:31.713 INFO [stderr] su: No module specific data is present
Dec 04 21:36:32.578 INFO running `"docker" "inspect" "e02a97173067d27b04acd8f0f11baf9e912b1a78eacd51edfd03fb6aa033d60f"`
Dec 04 21:36:32.900 INFO running `"docker" "rm" "-f" "e02a97173067d27b04acd8f0f11baf9e912b1a78eacd51edfd03fb6aa033d60f"`
Dec 04 21:36:33.210 INFO [stdout] e02a97173067d27b04acd8f0f11baf9e912b1a78eacd51edfd03fb6aa033d60f