[INFO] cloning repository https://github.com/auyer/screenshot-scaledown
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/auyer/screenshot-scaledown" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fauyer%2Fscreenshot-scaledown"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fauyer%2Fscreenshot-scaledown'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f0f1ebbc8f932181c3eb94d5e437043c81f070a7
[INFO] checking auyer/screenshot-scaledown against try#8a749131e7beb72f6edacefd2bdcbed3d67b2112 for pr-72331
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fauyer%2Fscreenshot-scaledown" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/auyer/screenshot-scaledown on toolchain 8a749131e7beb72f6edacefd2bdcbed3d67b2112
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/auyer/screenshot-scaledown
[INFO] finished tweaking git repo https://github.com/auyer/screenshot-scaledown
[INFO] tweaked toml for git repo https://github.com/auyer/screenshot-scaledown written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/auyer/screenshot-scaledown already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b9981736e17b74116bd82aac07d492842bb5670e5b28a38f4303d530d1cd4bfc
[INFO] running `"docker" "start" "-a" "b9981736e17b74116bd82aac07d492842bb5670e5b28a38f4303d530d1cd4bfc"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking bytemuck v1.2.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking bitflags v0.2.1
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking deflate v0.8.4
[INFO] [stderr]     Checking tiff v0.4.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking xlib v0.1.0 (https://github.com/servo/rust-xlib#38ce24e6)
[INFO] [stderr]     Checking png v0.16.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.19
[INFO] [stderr]     Checking image v0.23.4
[INFO] [stderr]     Checking screenshot-scaledown v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: field is never read: `height`
[INFO] [stderr]   --> src/screenshot/mod.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     height: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `width`
[INFO] [stderr]   --> src/screenshot/mod.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     width: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `row_len`
[INFO] [stderr]   --> src/screenshot/mod.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     row_len: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `pixel_width`
[INFO] [stderr]   --> src/screenshot/mod.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pixel_width: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `height`
[INFO] [stderr]   --> src/screenshot/mod.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn height(&self) -> usize {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `width`
[INFO] [stderr]   --> src/screenshot/mod.rs:54:12
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn width(&self) -> usize {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `row_len`
[INFO] [stderr]   --> src/screenshot/mod.rs:60:12
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn row_len(&self) -> usize {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `pixel_width`
[INFO] [stderr]   --> src/screenshot/mod.rs:66:12
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn pixel_width(&self) -> usize {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `raw_data`
[INFO] [stderr]   --> src/screenshot/mod.rs:72:19
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub unsafe fn raw_data(&self) -> *const u8 {
[INFO] [stderr]    |                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `raw_data_mut`
[INFO] [stderr]   --> src/screenshot/mod.rs:78:19
[INFO] [stderr]    |
[INFO] [stderr] 78 |     pub unsafe fn raw_data_mut(&mut self) -> *mut u8 {
[INFO] [stderr]    |                   ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `raw_len`
[INFO] [stderr]   --> src/screenshot/mod.rs:84:12
[INFO] [stderr]    |
[INFO] [stderr] 84 |     pub fn raw_len(&self) -> usize {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_pixel`
[INFO] [stderr]   --> src/screenshot/mod.rs:89:12
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn get_pixel(&self, row: usize, col: usize) -> Pixel {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `ScreenResult`
[INFO] [stderr]    --> src/screenshot/mod.rs:114:1
[INFO] [stderr]     |
[INFO] [stderr] 114 | pub type ScreenResult = Result<Screenshot, &'static str>;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_screenshot`
[INFO] [stderr]    --> src/screenshot/mod.rs:130:12
[INFO] [stderr]     |
[INFO] [stderr] 130 |     pub fn get_screenshot(screen: u32) -> ScreenResult {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from`
[INFO] [stderr]   --> src/main.rs:60:8
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn from(start: &Instant) -> Self {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_action`
[INFO] [stderr]   --> src/main.rs:77:4
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn print_action() {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `row_len`
[INFO] [stderr]   --> src/screenshot/mod.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     row_len: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `row_len`
[INFO] [stderr]   --> src/screenshot/mod.rs:60:12
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn row_len(&self) -> usize {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `raw_data`
[INFO] [stderr]   --> src/screenshot/mod.rs:72:19
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub unsafe fn raw_data(&self) -> *const u8 {
[INFO] [stderr]    |                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `raw_data_mut`
[INFO] [stderr]   --> src/screenshot/mod.rs:78:19
[INFO] [stderr]    |
[INFO] [stderr] 78 |     pub unsafe fn raw_data_mut(&mut self) -> *mut u8 {
[INFO] [stderr]    |                   ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_pixel`
[INFO] [stderr]   --> src/screenshot/mod.rs:89:12
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn get_pixel(&self, row: usize, col: usize) -> Pixel {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from`
[INFO] [stderr]   --> src/main.rs:60:8
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn from(start: &Instant) -> Self {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_action`
[INFO] [stderr]   --> src/main.rs:77:4
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn print_action() {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.17s
[INFO] running `"docker" "inspect" "b9981736e17b74116bd82aac07d492842bb5670e5b28a38f4303d530d1cd4bfc"`
[INFO] running `"docker" "rm" "-f" "b9981736e17b74116bd82aac07d492842bb5670e5b28a38f4303d530d1cd4bfc"`
[INFO] [stdout] b9981736e17b74116bd82aac07d492842bb5670e5b28a38f4303d530d1cd4bfc