Dec 19 21:02:20.891 INFO checking adolfosilva/vcrust against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 21:02:20.892 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/adolfosilva/vcrust:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 21:02:21.428 INFO [stdout] 98b5ebb14cb1cd3cbb0139599b1aca36b009f92c65caa6c2d343ba6c4915e75b
Dec 19 21:02:21.434 INFO running `"docker" "start" "-a" "98b5ebb14cb1cd3cbb0139599b1aca36b009f92c65caa6c2d343ba6c4915e75b"`
Dec 19 21:02:22.980 INFO [stderr]    Compiling gcc v0.3.44
Dec 19 21:02:25.667 INFO [stderr]    Compiling vcrust v0.1.0 (/opt/crater/workdir)
Dec 19 21:02:26.944 INFO [stderr] warning: unused import: `std::iter::repeat`
Dec 19 21:02:26.944 INFO [stderr]  --> src/ops.rs:1:5
Dec 19 21:02:26.944 INFO [stderr]   |
Dec 19 21:02:26.944 INFO [stderr] 1 | use std::iter::repeat;
Dec 19 21:02:26.944 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 19 21:02:26.944 INFO [stderr]   |
Dec 19 21:02:26.944 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 21:02:26.944 INFO [stderr] 
Dec 19 21:02:26.944 INFO [stderr] warning: unused import: `ImageType`
Dec 19 21:02:26.944 INFO [stderr]  --> src/ops.rs:2:20
Dec 19 21:02:26.945 INFO [stderr]   |
Dec 19 21:02:26.945 INFO [stderr] 2 | use image::{Image, ImageType, Channel};
Dec 19 21:02:26.945 INFO [stderr]   |                    ^^^^^^^^^
Dec 19 21:02:26.945 INFO [stderr] 
Dec 19 21:02:27.225 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:02:27.225 INFO [stderr]    --> src/image.rs:263:13
Dec 19 21:02:27.225 INFO [stderr]     |
Dec 19 21:02:27.225 INFO [stderr] 263 |         let mut bits = bytes.map(|b| b.unwrap()).collect::<Vec<u8>>();
Dec 19 21:02:27.225 INFO [stderr]     |             ----^^^^
Dec 19 21:02:27.225 INFO [stderr]     |             |
Dec 19 21:02:27.225 INFO [stderr]     |             help: remove this `mut`
Dec 19 21:02:27.225 INFO [stderr]     |
Dec 19 21:02:27.225 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 21:02:27.225 INFO [stderr] 
Dec 19 21:02:27.264 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 19 21:02:27.264 INFO [stderr]    --> src/image.rs:295:9
Dec 19 21:02:27.264 INFO [stderr]     |
Dec 19 21:02:27.264 INFO [stderr] 295 |         bytes.map(|b| b.unwrap()).take_while(|b| *b != b'\n').collect::<Vec<u8>>();
Dec 19 21:02:27.264 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:02:27.264 INFO [stderr]     |
Dec 19 21:02:27.264 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 21:02:27.264 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 19 21:02:27.264 INFO [stderr] 
Dec 19 21:02:27.264 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:02:27.264 INFO [stderr]    --> src/image.rs:429:5
Dec 19 21:02:27.264 INFO [stderr]     |
Dec 19 21:02:27.264 INFO [stderr] 429 |     img.write("image/barbara2.pgm");
Dec 19 21:02:27.264 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:02:27.264 INFO [stderr]     |
Dec 19 21:02:27.264 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:02:27.264 INFO [stderr] 
Dec 19 21:02:27.276 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:02:27.276 INFO [stderr]    --> src/image.rs:263:13
Dec 19 21:02:27.276 INFO [stderr]     |
Dec 19 21:02:27.276 INFO [stderr] 263 |         let mut bits = bytes.map(|b| b.unwrap()).collect::<Vec<u8>>();
Dec 19 21:02:27.276 INFO [stderr]     |             ----^^^^
Dec 19 21:02:27.276 INFO [stderr]     |             |
Dec 19 21:02:27.276 INFO [stderr]     |             help: remove this `mut`
Dec 19 21:02:27.276 INFO [stderr]     |
Dec 19 21:02:27.276 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 21:02:27.276 INFO [stderr] 
Dec 19 21:02:27.304 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 19 21:02:27.304 INFO [stderr]    --> src/image.rs:295:9
Dec 19 21:02:27.304 INFO [stderr]     |
Dec 19 21:02:27.304 INFO [stderr] 295 |         bytes.map(|b| b.unwrap()).take_while(|b| *b != b'\n').collect::<Vec<u8>>();
Dec 19 21:02:27.304 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:02:27.304 INFO [stderr]     |
Dec 19 21:02:27.304 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 21:02:27.304 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 19 21:02:27.304 INFO [stderr] 
Dec 19 21:02:27.332 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.40s
Dec 19 21:02:28.628 INFO running `"docker" "inspect" "98b5ebb14cb1cd3cbb0139599b1aca36b009f92c65caa6c2d343ba6c4915e75b"`
Dec 19 21:02:28.896 INFO running `"docker" "rm" "-f" "98b5ebb14cb1cd3cbb0139599b1aca36b009f92c65caa6c2d343ba6c4915e75b"`
Dec 19 21:02:29.328 INFO [stdout] 98b5ebb14cb1cd3cbb0139599b1aca36b009f92c65caa6c2d343ba6c4915e75b