Dec 04 23:08:17.987 INFO checking adolfosilva/vcrust against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 23:08:17.987 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-5/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 23:08:18.407 INFO [stdout] 142111fa57f9dce8344b92097ea946d8e3045a94a886336eafc1ac2f3a144cdc
Dec 04 23:08:18.415 INFO running `"docker" "start" "-a" "142111fa57f9dce8344b92097ea946d8e3045a94a886336eafc1ac2f3a144cdc"`
Dec 04 23:08:19.819 INFO [stderr] usermod: no changes
Dec 04 23:08:19.919 INFO [stderr]    Compiling gcc v0.3.44
Dec 04 23:08:22.651 INFO [stderr]    Compiling vcrust v0.1.0 (/source)
Dec 04 23:08:24.427 INFO [stderr] warning: unused import: `std::iter::repeat`
Dec 04 23:08:24.427 INFO [stderr]  --> src/ops.rs:1:5
Dec 04 23:08:24.427 INFO [stderr]   |
Dec 04 23:08:24.427 INFO [stderr] 1 | use std::iter::repeat;
Dec 04 23:08:24.427 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 04 23:08:24.447 INFO [stderr]   |
Dec 04 23:08:24.447 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 23:08:24.447 INFO [stderr] 
Dec 04 23:08:24.447 INFO [stderr] warning: unused import: `ImageType`
Dec 04 23:08:24.447 INFO [stderr]  --> src/ops.rs:2:20
Dec 04 23:08:24.447 INFO [stderr]   |
Dec 04 23:08:24.447 INFO [stderr] 2 | use image::{Image, ImageType, Channel};
Dec 04 23:08:24.447 INFO [stderr]   |                    ^^^^^^^^^
Dec 04 23:08:24.447 INFO [stderr] 
Dec 04 23:08:24.835 INFO [stderr] warning: variable does not need to be mutable
Dec 04 23:08:24.838 INFO [stderr]    --> src/image.rs:263:13
Dec 04 23:08:24.839 INFO [stderr]     |
Dec 04 23:08:24.839 INFO [stderr] 263 |         let mut bits = bytes.map(|b| b.unwrap()).collect::<Vec<u8>>();
Dec 04 23:08:24.839 INFO [stderr]     |             ----^^^^
Dec 04 23:08:24.839 INFO [stderr]     |             |
Dec 04 23:08:24.839 INFO [stderr]     |             help: remove this `mut`
Dec 04 23:08:24.846 INFO [stderr]     |
Dec 04 23:08:24.847 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 04 23:08:24.847 INFO [stderr] 
Dec 04 23:08:24.886 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 04 23:08:24.886 INFO [stderr]    --> src/image.rs:295:9
Dec 04 23:08:24.886 INFO [stderr]     |
Dec 04 23:08:24.886 INFO [stderr] 295 |         bytes.map(|b| b.unwrap()).take_while(|b| *b != b'\n').collect::<Vec<u8>>();
Dec 04 23:08:24.886 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 23:08:24.891 INFO [stderr]     |
Dec 04 23:08:24.891 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 23:08:24.891 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 04 23:08:24.891 INFO [stderr] 
Dec 04 23:08:25.207 INFO [stderr] warning: variable does not need to be mutable
Dec 04 23:08:25.207 INFO [stderr]    --> src/image.rs:263:13
Dec 04 23:08:25.207 INFO [stderr]     |
Dec 04 23:08:25.207 INFO [stderr] 263 |         let mut bits = bytes.map(|b| b.unwrap()).collect::<Vec<u8>>();
Dec 04 23:08:25.207 INFO [stderr]     |             ----^^^^
Dec 04 23:08:25.207 INFO [stderr]     |             |
Dec 04 23:08:25.207 INFO [stderr]     |             help: remove this `mut`
Dec 04 23:08:25.207 INFO [stderr]     |
Dec 04 23:08:25.207 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 04 23:08:25.207 INFO [stderr] 
Dec 04 23:08:25.235 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 04 23:08:25.235 INFO [stderr]    --> src/image.rs:295:9
Dec 04 23:08:25.235 INFO [stderr]     |
Dec 04 23:08:25.235 INFO [stderr] 295 |         bytes.map(|b| b.unwrap()).take_while(|b| *b != b'\n').collect::<Vec<u8>>();
Dec 04 23:08:25.235 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 23:08:25.235 INFO [stderr]     |
Dec 04 23:08:25.235 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 23:08:25.235 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 04 23:08:25.235 INFO [stderr] 
Dec 04 23:08:25.235 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 23:08:25.235 INFO [stderr]    --> src/image.rs:429:5
Dec 04 23:08:25.235 INFO [stderr]     |
Dec 04 23:08:25.235 INFO [stderr] 429 |     img.write("image/barbara2.pgm");
Dec 04 23:08:25.235 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 23:08:25.235 INFO [stderr]     |
Dec 04 23:08:25.235 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 23:08:25.235 INFO [stderr] 
Dec 04 23:08:25.263 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.41s
Dec 04 23:08:25.263 INFO [stderr] su: No module specific data is present
Dec 04 23:08:26.059 INFO running `"docker" "inspect" "142111fa57f9dce8344b92097ea946d8e3045a94a886336eafc1ac2f3a144cdc"`
Dec 04 23:08:26.303 INFO running `"docker" "rm" "-f" "142111fa57f9dce8344b92097ea946d8e3045a94a886336eafc1ac2f3a144cdc"`
Dec 04 23:08:26.699 INFO [stdout] 142111fa57f9dce8344b92097ea946d8e3045a94a886336eafc1ac2f3a144cdc