[INFO] cloning repository https://github.com/raytung/pixels
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/raytung/pixels" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraytung%2Fpixels", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraytung%2Fpixels'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d31af04f5e555a4c440f928e7234e68d73bac7f6
[INFO] checking raytung/pixels against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraytung%2Fpixels" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/raytung/pixels on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/raytung/pixels
[INFO] finished tweaking git repo https://github.com/raytung/pixels
[INFO] tweaked toml for git repo https://github.com/raytung/pixels written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/raytung/pixels already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52000a63ece9a75b466b42dd3aa5f54e7be416659cb124eddbdf17ee64a7372a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "52000a63ece9a75b466b42dd3aa5f54e7be416659cb124eddbdf17ee64a7372a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52000a63ece9a75b466b42dd3aa5f54e7be416659cb124eddbdf17ee64a7372a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52000a63ece9a75b466b42dd3aa5f54e7be416659cb124eddbdf17ee64a7372a", kill_on_drop: false }`
[INFO] [stdout] 52000a63ece9a75b466b42dd3aa5f54e7be416659cb124eddbdf17ee64a7372a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa1b02bf27e551f880747b391dfe7e160ef1a4704ff5cf935c2c97c1b70f97da
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fa1b02bf27e551f880747b391dfe7e160ef1a4704ff5cf935c2c97c1b70f97da", kill_on_drop: false }`
[INFO] [stderr]     Checking pixels v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Result`, `SeekFrom`
[INFO] [stdout]  --> src/lib.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Seek, Result, Read, SeekFrom};
[INFO] [stdout]   |                     ^^^^^^        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/jpeg.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Result`, `SeekFrom`
[INFO] [stdout]  --> src/lib.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Seek, Result, Read, SeekFrom};
[INFO] [stdout]   |                     ^^^^^^        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/jpeg.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/jpeg.rs:43:32
[INFO] [stdout]    |
[INFO] [stdout] 43 |             Markers::RST(n @ 0 ... 7) => Ok((0xFF, 0xD0 + n as u8)),
[INFO] [stdout]    |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/jpeg.rs:46:32
[INFO] [stdout]    |
[INFO] [stdout] 46 |             Markers::APP(n @ 0 ... 15) => Ok((0xFF, 0xE0 + n as u8)),
[INFO] [stdout]    |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/jpeg.rs:43:32
[INFO] [stdout]    |
[INFO] [stdout] 43 |             Markers::RST(n @ 0 ... 7) => Ok((0xFF, 0xD0 + n as u8)),
[INFO] [stdout]    |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/jpeg.rs:46:32
[INFO] [stdout]    |
[INFO] [stdout] 46 |             Markers::APP(n @ 0 ... 15) => Ok((0xFF, 0xE0 + n as u8)),
[INFO] [stdout]    |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/jpeg.rs:116:24
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> src/jpeg.rs:122:24
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Markers`
[INFO] [stdout]  --> src/jpeg.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum Markers {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `INVALID`
[INFO] [stdout]   --> src/jpeg.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     INVALID
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `MarkerBytes`
[INFO] [stdout]   --> src/jpeg.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | type MarkerBytes = (u8, u8);
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_bytes`
[INFO] [stdout]   --> src/jpeg.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn to_bytes(&self) -> Result<MarkerBytes, MarkersResult> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `file`
[INFO] [stdout]    --> src/jpeg.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 112 |     file: File,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/jpeg.rs:116:24
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> src/jpeg.rs:122:24
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SOI`
[INFO] [stdout]  --> src/jpeg.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     SOI,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SOF0`
[INFO] [stdout]  --> src/jpeg.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     SOF0,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SOF2`
[INFO] [stdout]   --> src/jpeg.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     SOF2,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DHT`
[INFO] [stdout]   --> src/jpeg.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     DHT,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DQT`
[INFO] [stdout]   --> src/jpeg.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     DQT,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DRI`
[INFO] [stdout]   --> src/jpeg.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     DRI,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SOS`
[INFO] [stdout]   --> src/jpeg.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     SOS,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `COM`
[INFO] [stdout]   --> src/jpeg.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     COM,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `EOI`
[INFO] [stdout]   --> src/jpeg.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     EOI,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `file`
[INFO] [stdout]    --> src/jpeg.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 112 |     file: File,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "fa1b02bf27e551f880747b391dfe7e160ef1a4704ff5cf935c2c97c1b70f97da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa1b02bf27e551f880747b391dfe7e160ef1a4704ff5cf935c2c97c1b70f97da", kill_on_drop: false }`
[INFO] [stdout] fa1b02bf27e551f880747b391dfe7e160ef1a4704ff5cf935c2c97c1b70f97da