[INFO] updating cached repository glfmn/watermark
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/glfmn/watermark
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/glfmn/watermark" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/glfmn/watermark"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/glfmn/watermark'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/glfmn/watermark" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/glfmn/watermark"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/glfmn/watermark'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] da8878290702e62d9772fc0e82a3db1805e1b990
[INFO] sha for GitHub repo glfmn/watermark: da8878290702e62d9772fc0e82a3db1805e1b990
[INFO] validating manifest of glfmn/watermark on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of glfmn/watermark on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing glfmn/watermark
[INFO] finished frobbing glfmn/watermark
[INFO] frobbed toml for glfmn/watermark written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/glfmn/watermark/Cargo.toml
[INFO] started frobbing glfmn/watermark
[INFO] finished frobbing glfmn/watermark
[INFO] frobbed toml for glfmn/watermark written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/glfmn/watermark/Cargo.toml
[INFO] crate glfmn/watermark already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking glfmn/watermark against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-5/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/glfmn/watermark:/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" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 51fddd92113a7608fd8c44b03085c35d34fbe23452a8ed583d253ca9462aa9a1
[INFO] running `"docker" "start" "-a" "51fddd92113a7608fd8c44b03085c35d34fbe23452a8ed583d253ca9462aa9a1"`
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling syn v0.15.20
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking tiff v0.2.1
[INFO] [stderr]     Checking image v0.20.1
[INFO] [stderr]     Checking watermark v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `GenericImage`
[INFO] [stderr]  --> src/main.rs:7:31
[INFO] [stderr]   |
[INFO] [stderr] 7 | use image::{GenericImageView, GenericImage, ImageBuffer};
[INFO] [stderr]   |                               ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ImageBuffer`
[INFO] [stderr]  --> src/block.rs:1:45
[INFO] [stderr]   |
[INFO] [stderr] 1 | use image::{GenericImageView, GenericImage, ImageBuffer};
[INFO] [stderr]   |                                             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `HashMap` is imported redundantly
[INFO] [stderr]  --> src/kmeans.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::collections::HashMap;
[INFO] [stderr]   |     ------------------------- the item `HashMap` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 8 |     use std::collections::HashMap;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `GenericImage`
[INFO] [stderr]  --> src/main.rs:7:31
[INFO] [stderr]   |
[INFO] [stderr] 7 | use image::{GenericImageView, GenericImage, ImageBuffer};
[INFO] [stderr]   |                               ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ImageBuffer`
[INFO] [stderr]  --> src/block.rs:1:45
[INFO] [stderr]   |
[INFO] [stderr] 1 | use image::{GenericImageView, GenericImage, ImageBuffer};
[INFO] [stderr]   |                                             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `HashMap` is imported redundantly
[INFO] [stderr]  --> src/kmeans.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::collections::HashMap;
[INFO] [stderr]   |     ------------------------- the item `HashMap` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 8 |     use std::collections::HashMap;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `GenericImageView`
[INFO] [stderr]  --> src/main.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 | use image::{GenericImageView, GenericImage, ImageBuffer};
[INFO] [stderr]   |             ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rayon::prelude`
[INFO] [stderr]  --> src/block.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rayon::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]    --> src/main.rs:194:13
[INFO] [stderr]     |
[INFO] [stderr] 194 |         let row = &permuted[start..end];
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_row`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `GenericImageView`
[INFO] [stderr]  --> src/main.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 | use image::{GenericImageView, GenericImage, ImageBuffer};
[INFO] [stderr]   |             ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rayon::prelude`
[INFO] [stderr]  --> src/block.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rayon::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]    --> src/main.rs:194:13
[INFO] [stderr]     |
[INFO] [stderr] 194 |         let row = &permuted[start..end];
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_row`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:173:13
[INFO] [stderr]     |
[INFO] [stderr] 173 |         let mut permuted_row = &mut permuted[start..end];
[INFO] [stderr]     |             ----^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:173:13
[INFO] [stderr]     |
[INFO] [stderr] 173 |         let mut permuted_row = &mut permuted[start..end];
[INFO] [stderr]     |             ----^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:200:5
[INFO] [stderr]     |
[INFO] [stderr] 200 |     write_image(output, mark_width, mark_height, &extracted);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:200:5
[INFO] [stderr]     |
[INFO] [stderr] 200 |     write_image(output, mark_width, mark_height, &extracted);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.57s
[INFO] running `"docker" "inspect" "51fddd92113a7608fd8c44b03085c35d34fbe23452a8ed583d253ca9462aa9a1"`
[INFO] running `"docker" "rm" "-f" "51fddd92113a7608fd8c44b03085c35d34fbe23452a8ed583d253ca9462aa9a1"`
[INFO] [stdout] 51fddd92113a7608fd8c44b03085c35d34fbe23452a8ed583d253ca9462aa9a1