[INFO] cloning repository https://github.com/ctkai01/jpeg_compression
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ctkai01/jpeg_compression" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fctkai01%2Fjpeg_compression", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fctkai01%2Fjpeg_compression'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 141ec824c431582813edcf97db49572fb9ca46df
[INFO] checking ctkai01/jpeg_compression against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fctkai01%2Fjpeg_compression" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ctkai01/jpeg_compression
[INFO] finished tweaking git repo https://github.com/ctkai01/jpeg_compression
[INFO] tweaked toml for git repo https://github.com/ctkai01/jpeg_compression written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ctkai01/jpeg_compression on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ctkai01/jpeg_compression already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ndarray-image v0.3.0
[INFO] [stderr]   Downloaded array2d v0.2.1
[INFO] [stderr]   Downloaded image v0.24.4
[INFO] [stderr]   Downloaded ndarray v0.14.0
[INFO] [stderr]   Downloaded jpeg-decoder v0.2.6
[INFO] [stderr]   Downloaded tiff v0.7.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 268721373df5e442de94f2b27328d0227c8b709468aed65f7e04fdd6deb67d2b
[INFO] running `Command { std: "docker" "start" "-a" "268721373df5e442de94f2b27328d0227c8b709468aed65f7e04fdd6deb67d2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "268721373df5e442de94f2b27328d0227c8b709468aed65f7e04fdd6deb67d2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "268721373df5e442de94f2b27328d0227c8b709468aed65f7e04fdd6deb67d2b", kill_on_drop: false }`
[INFO] [stdout] 268721373df5e442de94f2b27328d0227c8b709468aed65f7e04fdd6deb67d2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eddef4f10fd1186615398aa0b8efcc322cef855abaa47e5077ab6de527b7fcb0
[INFO] running `Command { std: "docker" "start" "-a" "eddef4f10fd1186615398aa0b8efcc322cef855abaa47e5077ab6de527b7fcb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]     Checking weezl v0.1.7
[INFO] [stderr]    Compiling ndarray v0.14.0
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]     Checking bytemuck v1.12.2
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking half v2.1.0
[INFO] [stderr]     Checking lebe v0.5.2
[INFO] [stderr]     Checking num-rational v0.4.1
[INFO] [stderr]     Checking array2d v0.2.1
[INFO] [stderr]     Checking gif v0.11.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking png v0.17.7
[INFO] [stderr]     Checking ndarray-image v0.3.0
[INFO] [stderr]     Checking jpeg-decoder v0.2.6
[INFO] [stderr]    Compiling pin-project-internal v1.0.12
[INFO] [stderr]     Checking tiff v0.7.4
[INFO] [stderr]     Checking pin-project v1.0.12
[INFO] [stderr]     Checking flume v0.10.14
[INFO] [stderr]     Checking exr v1.5.2
[INFO] [stderr]     Checking image v0.24.4
[INFO] [stderr]     Checking jpeg_compresstion v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `array2d::Array2D`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use array2d::Array2D;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:333:33
[INFO] [stdout]     |
[INFO] [stdout] 333 | impl<A: Hash, B: Hash> Hash for (dyn KeyPair<A, B> + '_) {
[INFO] [stdout]     |                                 ^                      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 333 - impl<A: Hash, B: Hash> Hash for (dyn KeyPair<A, B> + '_) {
[INFO] [stdout] 333 + impl<A: Hash, B: Hash> Hash for dyn KeyPair<A, B> + '_  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:340:34
[INFO] [stdout]     |
[INFO] [stdout] 340 | impl<A: Eq, B: Eq> PartialEq for (dyn KeyPair<A, B> + '_) {
[INFO] [stdout]     |                                  ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 340 - impl<A: Eq, B: Eq> PartialEq for (dyn KeyPair<A, B> + '_) {
[INFO] [stdout] 340 + impl<A: Eq, B: Eq> PartialEq for dyn KeyPair<A, B> + '_  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:346:27
[INFO] [stdout]     |
[INFO] [stdout] 346 | impl<A: Eq, B: Eq> Eq for (dyn KeyPair<A, B> + '_) {}
[INFO] [stdout]     |                           ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 346 - impl<A: Eq, B: Eq> Eq for (dyn KeyPair<A, B> + '_) {}
[INFO] [stdout] 346 + impl<A: Eq, B: Eq> Eq for dyn KeyPair<A, B> + '_  {}
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `array2d::Array2D`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use array2d::Array2D;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:333:33
[INFO] [stdout]     |
[INFO] [stdout] 333 | impl<A: Hash, B: Hash> Hash for (dyn KeyPair<A, B> + '_) {
[INFO] [stdout]     |                                 ^                      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 333 - impl<A: Hash, B: Hash> Hash for (dyn KeyPair<A, B> + '_) {
[INFO] [stdout] 333 + impl<A: Hash, B: Hash> Hash for dyn KeyPair<A, B> + '_  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:340:34
[INFO] [stdout]     |
[INFO] [stdout] 340 | impl<A: Eq, B: Eq> PartialEq for (dyn KeyPair<A, B> + '_) {
[INFO] [stdout]     |                                  ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 340 - impl<A: Eq, B: Eq> PartialEq for (dyn KeyPair<A, B> + '_) {
[INFO] [stdout] 340 + impl<A: Eq, B: Eq> PartialEq for dyn KeyPair<A, B> + '_  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:346:27
[INFO] [stdout]     |
[INFO] [stdout] 346 | impl<A: Eq, B: Eq> Eq for (dyn KeyPair<A, B> + '_) {}
[INFO] [stdout]     |                           ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 346 - impl<A: Eq, B: Eq> Eq for (dyn KeyPair<A, B> + '_) {}
[INFO] [stdout] 346 + impl<A: Eq, B: Eq> Eq for dyn KeyPair<A, B> + '_  {}
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `len` is never read
[INFO] [stdout]    --> src/main.rs:258:19
[INFO] [stdout]     |
[INFO] [stdout] 258 |     let mut len = max;
[INFO] [stdout]     |                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `len` is never read
[INFO] [stdout]    --> src/main.rs:258:19
[INFO] [stdout]     |
[INFO] [stdout] 258 |     let mut len = max;
[INFO] [stdout]     |                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `LuminanceQuantizationMatrix` is never constructed
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum QuantizationMatrix {
[INFO] [stdout]   |      ------------------ variant in this enum
[INFO] [stdout] 8 |     LuminanceQuantizationMatrix,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `QuantizationMatrix` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `LuminanceQuantizationMatrix` is never constructed
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum QuantizationMatrix {
[INFO] [stdout]   |      ------------------ variant in this enum
[INFO] [stdout] 8 |     LuminanceQuantizationMatrix,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `QuantizationMatrix` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.15s
[INFO] running `Command { std: "docker" "inspect" "eddef4f10fd1186615398aa0b8efcc322cef855abaa47e5077ab6de527b7fcb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eddef4f10fd1186615398aa0b8efcc322cef855abaa47e5077ab6de527b7fcb0", kill_on_drop: false }`
[INFO] [stdout] eddef4f10fd1186615398aa0b8efcc322cef855abaa47e5077ab6de527b7fcb0
