[INFO] cloning repository https://github.com/Luweiba/random-matrix-steganography-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Luweiba/random-matrix-steganography-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuweiba%2Frandom-matrix-steganography-in-rust", kill_on_drop: false }`
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[INFO] [stdout] 611dbe7c5a1d1c9c4b8db0239aabada7a4223a0f
[INFO] checking Luweiba/random-matrix-steganography-in-rust against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuweiba%2Frandom-matrix-steganography-in-rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Luweiba/random-matrix-steganography-in-rust
[INFO] finished tweaking git repo https://github.com/Luweiba/random-matrix-steganography-in-rust
[INFO] tweaked toml for git repo https://github.com/Luweiba/random-matrix-steganography-in-rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Luweiba/random-matrix-steganography-in-rust on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Luweiba/random-matrix-steganography-in-rust 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] [stdout] b27048c0c383c6be370cc5fc8900e3aa1f8bb068ef133dda10898233333e90c4
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[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling const_fn v0.4.3
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[INFO] [stderr]     Checking rayon-core v1.9.0
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[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking image v0.23.12
[INFO] [stderr]     Checking random_matrix_steganography v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/steganography.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DynamicImage`, `RgbImage`, and `Rgb`
[INFO] [stdout]  --> src/steganography.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use image::{DynamicImage, GenericImageView, RgbImage, Rgb, ImageBuffer, Rgba, RgbaImage, EncodableLayout};
[INFO] [stdout]   |             ^^^^^^^^^^^^                    ^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::rngs::StdRng`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rand::rngs::StdRng;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng` and `SeedableRng`
[INFO] [stdout]  --> src/main.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::{SeedableRng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `random_matrix::RandMatrix`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use random_matrix::RandMatrix;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pixel_y_mut` is never read
[INFO] [stdout]   --> src/steganography.rs:50:30
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let mut pixel_y_mut= &mut Rgba([0,0,0,0]);
[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 `pixel_y_carrier` is never read
[INFO] [stdout]   --> src/steganography.rs:52:34
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut pixel_y_carrier= Rgba([0,0,0,0]);
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `g2_x` is never read
[INFO] [stdout]   --> src/steganography.rs:57:23
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let mut g2_x= 0;
[INFO] [stdout]    |                       ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `g2_y` is never read
[INFO] [stdout]   --> src/steganography.rs:59:23
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let mut g2_y= 0;
[INFO] [stdout]    |                       ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pixel_y_carrier` is never read
[INFO] [stdout]    --> src/steganography.rs:111:34
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let mut pixel_y_carrier= Rgba([0,0,0,0]);
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `g2_x` is never read
[INFO] [stdout]    --> src/steganography.rs:117:24
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let mut g2_x = 0;
[INFO] [stdout]     |                        ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `g2_y` is never read
[INFO] [stdout]    --> src/steganography.rs:119:24
[INFO] [stdout]     |
[INFO] [stdout] 119 |         let mut g2_y = 0;
[INFO] [stdout]     |                        ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/steganography.rs:211:13
[INFO] [stdout]     |
[INFO] [stdout] 211 |         let len = cipher_text_in_9.len();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `height` and `width` are never read
[INFO] [stdout]  --> src/random_matrix.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct RandMatrix {
[INFO] [stdout]   |            ---------- fields in this struct
[INFO] [stdout] 7 |     inner_matrix: Vec<Vec<u8>>,
[INFO] [stdout] 8 |     pub height: usize,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 9 |     pub width: usize,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RandMatrix` has a derived impl for the trait `Debug`, but this is 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: field `seed` is never read
[INFO] [stdout]   --> src/steganography.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct RMSteg {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 11 |     random_matrix: RandMatrix,
[INFO] [stdout] 12 |     seed: u64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RMSteg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/steganography.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DynamicImage`, `RgbImage`, and `Rgb`
[INFO] [stdout]  --> src/steganography.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use image::{DynamicImage, GenericImageView, RgbImage, Rgb, ImageBuffer, Rgba, RgbaImage, EncodableLayout};
[INFO] [stdout]   |             ^^^^^^^^^^^^                    ^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::rngs::StdRng`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rand::rngs::StdRng;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng` and `SeedableRng`
[INFO] [stdout]  --> src/main.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::{SeedableRng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `random_matrix::RandMatrix`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use random_matrix::RandMatrix;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pixel_y_mut` is never read
[INFO] [stdout]   --> src/steganography.rs:50:30
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let mut pixel_y_mut= &mut Rgba([0,0,0,0]);
[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 `pixel_y_carrier` is never read
[INFO] [stdout]   --> src/steganography.rs:52:34
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut pixel_y_carrier= Rgba([0,0,0,0]);
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `g2_x` is never read
[INFO] [stdout]   --> src/steganography.rs:57:23
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let mut g2_x= 0;
[INFO] [stdout]    |                       ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `g2_y` is never read
[INFO] [stdout]   --> src/steganography.rs:59:23
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let mut g2_y= 0;
[INFO] [stdout]    |                       ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pixel_y_carrier` is never read
[INFO] [stdout]    --> src/steganography.rs:111:34
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let mut pixel_y_carrier= Rgba([0,0,0,0]);
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `g2_x` is never read
[INFO] [stdout]    --> src/steganography.rs:117:24
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let mut g2_x = 0;
[INFO] [stdout]     |                        ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `g2_y` is never read
[INFO] [stdout]    --> src/steganography.rs:119:24
[INFO] [stdout]     |
[INFO] [stdout] 119 |         let mut g2_y = 0;
[INFO] [stdout]     |                        ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/steganography.rs:211:13
[INFO] [stdout]     |
[INFO] [stdout] 211 |         let len = cipher_text_in_9.len();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `height` and `width` are never read
[INFO] [stdout]  --> src/random_matrix.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct RandMatrix {
[INFO] [stdout]   |            ---------- fields in this struct
[INFO] [stdout] 7 |     inner_matrix: Vec<Vec<u8>>,
[INFO] [stdout] 8 |     pub height: usize,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 9 |     pub width: usize,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RandMatrix` has a derived impl for the trait `Debug`, but this is 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: field `seed` is never read
[INFO] [stdout]   --> src/steganography.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct RMSteg {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 11 |     random_matrix: RandMatrix,
[INFO] [stdout] 12 |     seed: u64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RMSteg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.33s
[INFO] running `Command { std: "docker" "inspect" "b27048c0c383c6be370cc5fc8900e3aa1f8bb068ef133dda10898233333e90c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b27048c0c383c6be370cc5fc8900e3aa1f8bb068ef133dda10898233333e90c4", kill_on_drop: false }`
[INFO] [stdout] b27048c0c383c6be370cc5fc8900e3aa1f8bb068ef133dda10898233333e90c4
