Dec 17 20:47:41.534 INFO checking lesguillemets/effective-fortnight against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 20:47:41.534 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/lesguillemets/effective-fortnight:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 20:47:41.932 INFO [stdout] 5e6b3dcfaac0a4ef372c655d716d7c206037a5cebeb10df6a4ec5c70d1d218de
Dec 17 20:47:41.934 INFO running `"docker" "start" "-a" "5e6b3dcfaac0a4ef372c655d716d7c206037a5cebeb10df6a4ec5c70d1d218de"`
Dec 17 20:47:43.135 INFO [stderr]     Checking image v0.12.3
Dec 17 20:47:46.708 INFO [stderr]     Checking colourful-converter v0.1.0 (/opt/crater/workdir)
Dec 17 20:47:46.967 INFO [stderr] warning: unused imports: `ColorType`, `Rgb`
Dec 17 20:47:46.967 INFO [stderr]  --> src/decode.rs:4:13
Dec 17 20:47:46.967 INFO [stderr]   |
Dec 17 20:47:46.967 INFO [stderr] 4 | use image::{ColorType, Rgb, Pixel};
Dec 17 20:47:46.967 INFO [stderr]   |             ^^^^^^^^^  ^^^
Dec 17 20:47:46.967 INFO [stderr]   |
Dec 17 20:47:46.967 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 20:47:46.967 INFO [stderr] 
Dec 17 20:47:46.967 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 20:47:46.968 INFO [stderr]   --> src/main.rs:19:5
Dec 17 20:47:46.968 INFO [stderr]    |
Dec 17 20:47:46.968 INFO [stderr] 19 |     /// decode the encoded file to validate
Dec 17 20:47:46.968 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:47:46.968 INFO [stderr]    |
Dec 17 20:47:46.968 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Dec 17 20:47:46.968 INFO [stderr] 
Dec 17 20:47:46.993 INFO [stderr] warning: unused imports: `ColorType`, `Rgb`
Dec 17 20:47:46.993 INFO [stderr]  --> src/decode.rs:4:13
Dec 17 20:47:46.993 INFO [stderr]   |
Dec 17 20:47:46.993 INFO [stderr] 4 | use image::{ColorType, Rgb, Pixel};
Dec 17 20:47:46.993 INFO [stderr]   |             ^^^^^^^^^  ^^^
Dec 17 20:47:46.993 INFO [stderr]   |
Dec 17 20:47:46.993 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 20:47:46.993 INFO [stderr] 
Dec 17 20:47:46.993 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 20:47:46.993 INFO [stderr]   --> src/main.rs:19:5
Dec 17 20:47:46.993 INFO [stderr]    |
Dec 17 20:47:46.993 INFO [stderr] 19 |     /// decode the encoded file to validate
Dec 17 20:47:46.993 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:47:46.993 INFO [stderr]    |
Dec 17 20:47:46.993 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Dec 17 20:47:46.993 INFO [stderr] 
Dec 17 20:47:47.060 INFO [stderr] warning: unused import: `GenericImage`
Dec 17 20:47:47.060 INFO [stderr]  --> src/decode.rs:3:13
Dec 17 20:47:47.060 INFO [stderr]   |
Dec 17 20:47:47.060 INFO [stderr] 3 | use image::{GenericImage, ImageDecoder};
Dec 17 20:47:47.060 INFO [stderr]   |             ^^^^^^^^^^^^
Dec 17 20:47:47.060 INFO [stderr] 
Dec 17 20:47:47.060 INFO [stderr] warning: unused import: `Pixel`
Dec 17 20:47:47.060 INFO [stderr]  --> src/decode.rs:4:29
Dec 17 20:47:47.060 INFO [stderr]   |
Dec 17 20:47:47.060 INFO [stderr] 4 | use image::{ColorType, Rgb, Pixel};
Dec 17 20:47:47.060 INFO [stderr]   |                             ^^^^^
Dec 17 20:47:47.060 INFO [stderr] 
Dec 17 20:47:47.062 INFO [stderr] warning: unused variable: `w`
Dec 17 20:47:47.062 INFO [stderr]   --> src/decode.rs:11:10
Dec 17 20:47:47.062 INFO [stderr]    |
Dec 17 20:47:47.062 INFO [stderr] 11 |     let (w, h) = decoder.dimensions().expect("cannot get file dimensions");
Dec 17 20:47:47.062 INFO [stderr]    |          ^ help: consider using `_w` instead
Dec 17 20:47:47.062 INFO [stderr]    |
Dec 17 20:47:47.062 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 20:47:47.062 INFO [stderr] 
Dec 17 20:47:47.062 INFO [stderr] warning: unused variable: `i`
Dec 17 20:47:47.062 INFO [stderr]   --> src/decode.rs:73:60
Dec 17 20:47:47.062 INFO [stderr]    |
Dec 17 20:47:47.062 INFO [stderr] 73 |     let mut x = header.chunks(3).enumerate().skip_while(|&(i, p)| is_empty(p));
Dec 17 20:47:47.062 INFO [stderr]    |                                                            ^ help: consider using `_i` instead
Dec 17 20:47:47.062 INFO [stderr] 
Dec 17 20:47:47.068 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:47:47.068 INFO [stderr]   --> src/main.rs:29:9
Dec 17 20:47:47.068 INFO [stderr]    |
Dec 17 20:47:47.068 INFO [stderr] 29 |     let mut outf = &mut File::create(&Path::new(to_file)).expect("fileerror");
Dec 17 20:47:47.068 INFO [stderr]    |         ----^^^^
Dec 17 20:47:47.068 INFO [stderr]    |         |
Dec 17 20:47:47.068 INFO [stderr]    |         help: remove this `mut`
Dec 17 20:47:47.068 INFO [stderr]    |
Dec 17 20:47:47.068 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 20:47:47.068 INFO [stderr] 
Dec 17 20:47:47.074 INFO [stderr] warning: unused import: `GenericImage`
Dec 17 20:47:47.074 INFO [stderr]  --> src/decode.rs:3:13
Dec 17 20:47:47.074 INFO [stderr]   |
Dec 17 20:47:47.074 INFO [stderr] 3 | use image::{GenericImage, ImageDecoder};
Dec 17 20:47:47.074 INFO [stderr]   |             ^^^^^^^^^^^^
Dec 17 20:47:47.074 INFO [stderr] 
Dec 17 20:47:47.074 INFO [stderr] warning: unused import: `Pixel`
Dec 17 20:47:47.074 INFO [stderr]  --> src/decode.rs:4:29
Dec 17 20:47:47.074 INFO [stderr]   |
Dec 17 20:47:47.074 INFO [stderr] 4 | use image::{ColorType, Rgb, Pixel};
Dec 17 20:47:47.074 INFO [stderr]   |                             ^^^^^
Dec 17 20:47:47.074 INFO [stderr] 
Dec 17 20:47:47.084 INFO [stderr] warning: unused variable: `w`
Dec 17 20:47:47.084 INFO [stderr]   --> src/decode.rs:11:10
Dec 17 20:47:47.084 INFO [stderr]    |
Dec 17 20:47:47.084 INFO [stderr] 11 |     let (w, h) = decoder.dimensions().expect("cannot get file dimensions");
Dec 17 20:47:47.084 INFO [stderr]    |          ^ help: consider using `_w` instead
Dec 17 20:47:47.084 INFO [stderr]    |
Dec 17 20:47:47.084 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 20:47:47.084 INFO [stderr] 
Dec 17 20:47:47.084 INFO [stderr] warning: unused variable: `i`
Dec 17 20:47:47.084 INFO [stderr]   --> src/decode.rs:73:60
Dec 17 20:47:47.084 INFO [stderr]    |
Dec 17 20:47:47.084 INFO [stderr] 73 |     let mut x = header.chunks(3).enumerate().skip_while(|&(i, p)| is_empty(p));
Dec 17 20:47:47.084 INFO [stderr]    |                                                            ^ help: consider using `_i` instead
Dec 17 20:47:47.084 INFO [stderr] 
Dec 17 20:47:47.084 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:47:47.084 INFO [stderr]   --> src/decode.rs:46:9
Dec 17 20:47:47.084 INFO [stderr]    |
Dec 17 20:47:47.084 INFO [stderr] 46 |     let mut header = body.next().expect("empty body");
Dec 17 20:47:47.084 INFO [stderr]    |         ----^^^^^^
Dec 17 20:47:47.084 INFO [stderr]    |         |
Dec 17 20:47:47.084 INFO [stderr]    |         help: remove this `mut`
Dec 17 20:47:47.084 INFO [stderr] 
Dec 17 20:47:47.089 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:47:47.089 INFO [stderr]   --> src/main.rs:29:9
Dec 17 20:47:47.089 INFO [stderr]    |
Dec 17 20:47:47.089 INFO [stderr] 29 |     let mut outf = &mut File::create(&Path::new(to_file)).expect("fileerror");
Dec 17 20:47:47.089 INFO [stderr]    |         ----^^^^
Dec 17 20:47:47.089 INFO [stderr]    |         |
Dec 17 20:47:47.089 INFO [stderr]    |         help: remove this `mut`
Dec 17 20:47:47.089 INFO [stderr]    |
Dec 17 20:47:47.089 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 20:47:47.089 INFO [stderr] 
Dec 17 20:47:47.091 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 20:47:47.091 INFO [stderr]   --> src/main.rs:22:5
Dec 17 20:47:47.091 INFO [stderr]    |
Dec 17 20:47:47.091 INFO [stderr] 22 |     test.write(&decode_file("out.png"));
Dec 17 20:47:47.091 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:47:47.091 INFO [stderr]    |
Dec 17 20:47:47.091 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 20:47:47.091 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 20:47:47.095 INFO [stderr] 
Dec 17 20:47:47.095 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 20:47:47.095 INFO [stderr]   --> src/main.rs:30:5
Dec 17 20:47:47.095 INFO [stderr]    |
Dec 17 20:47:47.095 INFO [stderr] 30 |     image::ImageRgb8(imgbuf).save(outf, image::PNG);
Dec 17 20:47:47.095 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:47:47.095 INFO [stderr]    |
Dec 17 20:47:47.095 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 20:47:47.095 INFO [stderr] 
Dec 17 20:47:47.101 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:47:47.101 INFO [stderr]   --> src/decode.rs:46:9
Dec 17 20:47:47.101 INFO [stderr]    |
Dec 17 20:47:47.101 INFO [stderr] 46 |     let mut header = body.next().expect("empty body");
Dec 17 20:47:47.101 INFO [stderr]    |         ----^^^^^^
Dec 17 20:47:47.101 INFO [stderr]    |         |
Dec 17 20:47:47.101 INFO [stderr]    |         help: remove this `mut`
Dec 17 20:47:47.101 INFO [stderr] 
Dec 17 20:47:47.116 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 20:47:47.117 INFO [stderr]   --> src/main.rs:22:5
Dec 17 20:47:47.117 INFO [stderr]    |
Dec 17 20:47:47.117 INFO [stderr] 22 |     test.write(&decode_file("out.png"));
Dec 17 20:47:47.117 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:47:47.117 INFO [stderr]    |
Dec 17 20:47:47.117 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 20:47:47.117 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 20:47:47.117 INFO [stderr] 
Dec 17 20:47:47.117 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 20:47:47.117 INFO [stderr]   --> src/main.rs:30:5
Dec 17 20:47:47.117 INFO [stderr]    |
Dec 17 20:47:47.117 INFO [stderr] 30 |     image::ImageRgb8(imgbuf).save(outf, image::PNG);
Dec 17 20:47:47.117 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:47:47.117 INFO [stderr]    |
Dec 17 20:47:47.117 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 20:47:47.117 INFO [stderr] 
Dec 17 20:47:47.156 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.11s
Dec 17 20:47:47.443 INFO running `"docker" "inspect" "5e6b3dcfaac0a4ef372c655d716d7c206037a5cebeb10df6a4ec5c70d1d218de"`
Dec 17 20:47:47.531 INFO running `"docker" "rm" "-f" "5e6b3dcfaac0a4ef372c655d716d7c206037a5cebeb10df6a4ec5c70d1d218de"`
Dec 17 20:47:47.637 INFO [stdout] 5e6b3dcfaac0a4ef372c655d716d7c206037a5cebeb10df6a4ec5c70d1d218de