Dec 04 14:04:54.684 INFO checking minauteur/io-png against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 14:04:54.684 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 14:04:55.204 INFO [stdout] 96e43e89913111fd4161c7a1d55f2690b9234fb62abeffe082447023271788f9
Dec 04 14:04:55.206 INFO running `"docker" "start" "-a" "96e43e89913111fd4161c7a1d55f2690b9234fb62abeffe082447023271788f9"`
Dec 04 14:04:57.931 INFO [stderr] usermod: no changes
Dec 04 14:04:58.142 INFO [stderr]     Checking net2 v0.2.31
Dec 04 14:04:58.147 INFO [stderr]     Checking num-integer v0.1.36
Dec 04 14:04:59.028 INFO [stderr]     Checking num-iter v0.1.35
Dec 04 14:04:59.030 INFO [stderr]     Checking num-rational v0.1.42
Dec 04 14:04:59.182 INFO [stderr]     Checking miow v0.1.5
Dec 04 14:04:59.687 INFO [stderr]     Checking png v0.11.0
Dec 04 14:04:59.778 INFO [stderr]     Checking mio v0.5.1
Dec 04 14:05:01.191 INFO [stderr]     Checking image v0.18.0
Dec 04 14:05:01.221 INFO [stderr]     Checking notify v4.0.3
Dec 04 14:05:06.223 INFO [stderr]     Checking io-png v0.1.0 (/source)
Dec 04 14:05:07.737 INFO [stderr] warning: unused import: `std::path::Path`
Dec 04 14:05:07.737 INFO [stderr]  --> src/main.rs:5:5
Dec 04 14:05:07.737 INFO [stderr]   |
Dec 04 14:05:07.737 INFO [stderr] 5 | use std::path::Path;
Dec 04 14:05:07.737 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 04 14:05:07.737 INFO [stderr]   |
Dec 04 14:05:07.737 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 14:05:07.737 INFO [stderr] 
Dec 04 14:05:07.737 INFO [stderr] warning: unused imports: `BufWriter`, `Write`
Dec 04 14:05:07.737 INFO [stderr]  --> src/main.rs:8:21
Dec 04 14:05:07.737 INFO [stderr]   |
Dec 04 14:05:07.737 INFO [stderr] 8 | use std::io::{Read, Write, BufReader, BufWriter};
Dec 04 14:05:07.737 INFO [stderr]   |                     ^^^^^             ^^^^^^^^^
Dec 04 14:05:07.737 INFO [stderr] 
Dec 04 14:05:07.737 INFO [stderr] warning: unused import: `std::ffi::OsStr`
Dec 04 14:05:07.737 INFO [stderr]  --> src/main.rs:9:5
Dec 04 14:05:07.737 INFO [stderr]   |
Dec 04 14:05:07.737 INFO [stderr] 9 | use std::ffi::OsStr;
Dec 04 14:05:07.737 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 04 14:05:07.737 INFO [stderr] 
Dec 04 14:05:07.737 INFO [stderr] warning: unused import: `image::png`
Dec 04 14:05:07.737 INFO [stderr]   --> src/main.rs:12:5
Dec 04 14:05:07.737 INFO [stderr]    |
Dec 04 14:05:07.737 INFO [stderr] 12 | use image::png;
Dec 04 14:05:07.737 INFO [stderr]    |     ^^^^^^^^^^
Dec 04 14:05:07.737 INFO [stderr] 
Dec 04 14:05:07.737 INFO [stderr] warning: unused import: `image::gif::Encoder`
Dec 04 14:05:07.737 INFO [stderr]   --> src/main.rs:13:5
Dec 04 14:05:07.737 INFO [stderr]    |
Dec 04 14:05:07.737 INFO [stderr] 13 | use image::gif::Encoder;
Dec 04 14:05:07.737 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 04 14:05:07.737 INFO [stderr] 
Dec 04 14:05:07.737 INFO [stderr] warning: unused imports: `ImageBuffer`, `Rgb`, `save_buffer`
Dec 04 14:05:07.737 INFO [stderr]   --> src/main.rs:14:13
Dec 04 14:05:07.737 INFO [stderr]    |
Dec 04 14:05:07.737 INFO [stderr] 14 | use image::{save_buffer, ImageBuffer, ColorType, Rgb};
Dec 04 14:05:07.737 INFO [stderr]    |             ^^^^^^^^^^^  ^^^^^^^^^^^             ^^^
Dec 04 14:05:07.737 INFO [stderr] 
Dec 04 14:05:07.771 INFO [stderr] warning: unused import: `std::path::Path`
Dec 04 14:05:07.771 INFO [stderr]  --> src/main.rs:5:5
Dec 04 14:05:07.771 INFO [stderr]   |
Dec 04 14:05:07.771 INFO [stderr] 5 | use std::path::Path;
Dec 04 14:05:07.771 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 04 14:05:07.771 INFO [stderr]   |
Dec 04 14:05:07.771 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 14:05:07.771 INFO [stderr] 
Dec 04 14:05:07.771 INFO [stderr] warning: unused imports: `BufWriter`, `Write`
Dec 04 14:05:07.771 INFO [stderr]  --> src/main.rs:8:21
Dec 04 14:05:07.771 INFO [stderr]   |
Dec 04 14:05:07.771 INFO [stderr] 8 | use std::io::{Read, Write, BufReader, BufWriter};
Dec 04 14:05:07.771 INFO [stderr]   |                     ^^^^^             ^^^^^^^^^
Dec 04 14:05:07.771 INFO [stderr] 
Dec 04 14:05:07.771 INFO [stderr] warning: unused import: `std::ffi::OsStr`
Dec 04 14:05:07.771 INFO [stderr]  --> src/main.rs:9:5
Dec 04 14:05:07.771 INFO [stderr]   |
Dec 04 14:05:07.771 INFO [stderr] 9 | use std::ffi::OsStr;
Dec 04 14:05:07.771 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 04 14:05:07.771 INFO [stderr] 
Dec 04 14:05:07.771 INFO [stderr] warning: unused import: `image::png`
Dec 04 14:05:07.771 INFO [stderr]   --> src/main.rs:12:5
Dec 04 14:05:07.771 INFO [stderr]    |
Dec 04 14:05:07.771 INFO [stderr] 12 | use image::png;
Dec 04 14:05:07.771 INFO [stderr]    |     ^^^^^^^^^^
Dec 04 14:05:07.771 INFO [stderr] 
Dec 04 14:05:07.771 INFO [stderr] warning: unused import: `image::gif::Encoder`
Dec 04 14:05:07.771 INFO [stderr]   --> src/main.rs:13:5
Dec 04 14:05:07.771 INFO [stderr]    |
Dec 04 14:05:07.771 INFO [stderr] 13 | use image::gif::Encoder;
Dec 04 14:05:07.771 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 04 14:05:07.771 INFO [stderr] 
Dec 04 14:05:07.771 INFO [stderr] warning: unused imports: `ImageBuffer`, `Rgb`, `save_buffer`
Dec 04 14:05:07.771 INFO [stderr]   --> src/main.rs:14:13
Dec 04 14:05:07.771 INFO [stderr]    |
Dec 04 14:05:07.771 INFO [stderr] 14 | use image::{save_buffer, ImageBuffer, ColorType, Rgb};
Dec 04 14:05:07.771 INFO [stderr]    |             ^^^^^^^^^^^  ^^^^^^^^^^^             ^^^
Dec 04 14:05:07.771 INFO [stderr] 
Dec 04 14:05:07.820 INFO [stderr] warning: constant item is never used: `WIDTH`
Dec 04 14:05:07.820 INFO [stderr]   --> src/main.rs:21:1
Dec 04 14:05:07.820 INFO [stderr]    |
Dec 04 14:05:07.820 INFO [stderr] 21 | const WIDTH: u32 = 100;
Dec 04 14:05:07.820 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:05:07.820 INFO [stderr]    |
Dec 04 14:05:07.820 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 14:05:07.820 INFO [stderr] 
Dec 04 14:05:07.820 INFO [stderr] warning: constant item is never used: `HEIGHT`
Dec 04 14:05:07.820 INFO [stderr]   --> src/main.rs:22:1
Dec 04 14:05:07.820 INFO [stderr]    |
Dec 04 14:05:07.820 INFO [stderr] 22 | const HEIGHT:u32 = 100;
Dec 04 14:05:07.820 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:05:07.820 INFO [stderr] 
Dec 04 14:05:07.890 INFO [stderr] warning: constant item is never used: `WIDTH`
Dec 04 14:05:07.891 INFO [stderr]   --> src/main.rs:21:1
Dec 04 14:05:07.891 INFO [stderr]    |
Dec 04 14:05:07.891 INFO [stderr] 21 | const WIDTH: u32 = 100;
Dec 04 14:05:07.891 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:05:07.891 INFO [stderr]    |
Dec 04 14:05:07.891 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 14:05:07.891 INFO [stderr] 
Dec 04 14:05:07.891 INFO [stderr] warning: constant item is never used: `HEIGHT`
Dec 04 14:05:07.891 INFO [stderr]   --> src/main.rs:22:1
Dec 04 14:05:07.891 INFO [stderr]    |
Dec 04 14:05:07.891 INFO [stderr] 22 | const HEIGHT:u32 = 100;
Dec 04 14:05:07.891 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:05:07.891 INFO [stderr] 
Dec 04 14:05:07.942 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.98s
Dec 04 14:05:07.943 INFO [stderr] su: No module specific data is present
Dec 04 14:05:08.651 INFO running `"docker" "inspect" "96e43e89913111fd4161c7a1d55f2690b9234fb62abeffe082447023271788f9"`
Dec 04 14:05:08.814 INFO running `"docker" "rm" "-f" "96e43e89913111fd4161c7a1d55f2690b9234fb62abeffe082447023271788f9"`
Dec 04 14:05:08.928 INFO [stdout] 96e43e89913111fd4161c7a1d55f2690b9234fb62abeffe082447023271788f9