Dec 11 21:33:03.038 INFO checking boustrophedon/png-concealer against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 21:33:03.038 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 21:33:03.560 INFO [stdout] 5b28806b705cef0088335a1b480e09cb1f45e5a9b25e4adb4ac79bba7b586142
Dec 11 21:33:03.562 INFO running `"docker" "start" "-a" "5b28806b705cef0088335a1b480e09cb1f45e5a9b25e4adb4ac79bba7b586142"`
Dec 11 21:33:05.696 INFO [stderr] usermod: no changes
Dec 11 21:33:05.932 INFO [stderr]    Compiling syn v0.13.10
Dec 11 21:33:13.867 INFO [stderr]    Compiling structopt-derive v0.2.8
Dec 11 21:33:17.412 INFO [stderr]     Checking structopt v0.2.8
Dec 11 21:33:18.648 INFO [stderr]     Checking png-concealer v0.1.0 (/source)
Dec 11 21:33:20.416 INFO [stderr] warning: unused `#[macro_use]` import
Dec 11 21:33:20.416 INFO [stderr]  --> src/main.rs:5:1
Dec 11 21:33:20.416 INFO [stderr]   |
Dec 11 21:33:20.416 INFO [stderr] 5 | #[macro_use]
Dec 11 21:33:20.416 INFO [stderr]   | ^^^^^^^^^^^^
Dec 11 21:33:20.416 INFO [stderr]   |
Dec 11 21:33:20.416 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 21:33:20.416 INFO [stderr] 
Dec 11 21:33:20.456 INFO [stderr] warning: unused `#[macro_use]` import
Dec 11 21:33:20.456 INFO [stderr]  --> src/main.rs:5:1
Dec 11 21:33:20.456 INFO [stderr]   |
Dec 11 21:33:20.456 INFO [stderr] 5 | #[macro_use]
Dec 11 21:33:20.456 INFO [stderr]   | ^^^^^^^^^^^^
Dec 11 21:33:20.456 INFO [stderr]   |
Dec 11 21:33:20.456 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 21:33:20.456 INFO [stderr] 
Dec 11 21:33:20.604 INFO [stderr] warning: unused variable: `input_png`
Dec 11 21:33:20.604 INFO [stderr]    --> src/main.rs:109:16
Dec 11 21:33:20.604 INFO [stderr]     |
Dec 11 21:33:20.604 INFO [stderr] 109 | fn decode_file(input_png: PathBuf, output: PathBuf) {
Dec 11 21:33:20.604 INFO [stderr]     |                ^^^^^^^^^ help: consider using `_input_png` instead
Dec 11 21:33:20.604 INFO [stderr]     |
Dec 11 21:33:20.604 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 11 21:33:20.604 INFO [stderr] 
Dec 11 21:33:20.604 INFO [stderr] warning: unused variable: `output`
Dec 11 21:33:20.604 INFO [stderr]    --> src/main.rs:109:36
Dec 11 21:33:20.604 INFO [stderr]     |
Dec 11 21:33:20.604 INFO [stderr] 109 | fn decode_file(input_png: PathBuf, output: PathBuf) {
Dec 11 21:33:20.604 INFO [stderr]     |                                    ^^^^^^ help: consider using `_output` instead
Dec 11 21:33:20.604 INFO [stderr] 
Dec 11 21:33:20.631 INFO [stderr] warning: constant `max_length` should have an upper case name such as `MAX_LENGTH`
Dec 11 21:33:20.631 INFO [stderr]   --> src/main.rs:51:5
Dec 11 21:33:20.631 INFO [stderr]    |
Dec 11 21:33:20.631 INFO [stderr] 51 |     const max_length: usize = (1<<31) - 1; // as defined in png spec
Dec 11 21:33:20.631 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 21:33:20.636 INFO [stderr]    |
Dec 11 21:33:20.636 INFO [stderr]    = note: #[warn(non_upper_case_globals)] on by default
Dec 11 21:33:20.636 INFO [stderr] 
Dec 11 21:33:20.636 INFO [stderr] warning: unused variable: `input_png`
Dec 11 21:33:20.637 INFO [stderr]    --> src/main.rs:109:16
Dec 11 21:33:20.637 INFO [stderr]     |
Dec 11 21:33:20.637 INFO [stderr] 109 | fn decode_file(input_png: PathBuf, output: PathBuf) {
Dec 11 21:33:20.637 INFO [stderr]     |                ^^^^^^^^^ help: consider using `_input_png` instead
Dec 11 21:33:20.637 INFO [stderr]     |
Dec 11 21:33:20.637 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 11 21:33:20.637 INFO [stderr] 
Dec 11 21:33:20.637 INFO [stderr] warning: unused variable: `output`
Dec 11 21:33:20.637 INFO [stderr]    --> src/main.rs:109:36
Dec 11 21:33:20.637 INFO [stderr]     |
Dec 11 21:33:20.637 INFO [stderr] 109 | fn decode_file(input_png: PathBuf, output: PathBuf) {
Dec 11 21:33:20.637 INFO [stderr]     |                                    ^^^^^^ help: consider using `_output` instead
Dec 11 21:33:20.637 INFO [stderr] 
Dec 11 21:33:20.668 INFO [stderr] warning: constant `max_length` should have an upper case name such as `MAX_LENGTH`
Dec 11 21:33:20.668 INFO [stderr]   --> src/main.rs:51:5
Dec 11 21:33:20.668 INFO [stderr]    |
Dec 11 21:33:20.668 INFO [stderr] 51 |     const max_length: usize = (1<<31) - 1; // as defined in png spec
Dec 11 21:33:20.668 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 21:33:20.668 INFO [stderr]    |
Dec 11 21:33:20.669 INFO [stderr]    = note: #[warn(non_upper_case_globals)] on by default
Dec 11 21:33:20.669 INFO [stderr] 
Dec 11 21:33:20.709 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.99s
Dec 11 21:33:20.714 INFO [stderr] su: No module specific data is present
Dec 11 21:33:21.668 INFO running `"docker" "inspect" "5b28806b705cef0088335a1b480e09cb1f45e5a9b25e4adb4ac79bba7b586142"`
Dec 11 21:33:22.040 INFO running `"docker" "rm" "-f" "5b28806b705cef0088335a1b480e09cb1f45e5a9b25e4adb4ac79bba7b586142"`
Dec 11 21:33:22.280 INFO [stdout] 5b28806b705cef0088335a1b480e09cb1f45e5a9b25e4adb4ac79bba7b586142