[INFO] cloning repository https://github.com/DanielHeath/rustymaze
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DanielHeath/rustymaze" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielHeath%2Frustymaze", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielHeath%2Frustymaze'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 223343578de0824b76c3cb07d442f6f157866567
[INFO] checking DanielHeath/rustymaze against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielHeath%2Frustymaze" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/DanielHeath/rustymaze
[INFO] finished tweaking git repo https://github.com/DanielHeath/rustymaze
[INFO] tweaked toml for git repo https://github.com/DanielHeath/rustymaze written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/DanielHeath/rustymaze on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/DanielHeath/rustymaze 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97f7a53be35a71cb827a14544695787732004e7d604f512f1ed7323e36739cc7
[INFO] running `Command { std: "docker" "start" "-a" "97f7a53be35a71cb827a14544695787732004e7d604f512f1ed7323e36739cc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97f7a53be35a71cb827a14544695787732004e7d604f512f1ed7323e36739cc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97f7a53be35a71cb827a14544695787732004e7d604f512f1ed7323e36739cc7", kill_on_drop: false }`
[INFO] [stdout] 97f7a53be35a71cb827a14544695787732004e7d604f512f1ed7323e36739cc7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41d933f528ea4921b94c9377ba7bb7d5fd3c99e64c2ebb3fc16e37a1e8aa56c7
[INFO] running `Command { std: "docker" "start" "-a" "41d933f528ea4921b94c9377ba7bb7d5fd3c99e64c2ebb3fc16e37a1e8aa56c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling num-traits v0.2.12
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[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling rayon v1.4.0
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-rational v0.3.0
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[INFO] [stderr]     Checking ppv-lite86 v0.2.9
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[INFO] [stderr]     Checking gif v0.10.3
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[INFO] [stderr]     Checking deflate v0.8.6
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[INFO] [stderr]     Checking num_cpus v1.13.0
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[INFO] [stderr]     Checking rand_core v0.5.1
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[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking image v0.23.9
[INFO] [stderr]     Checking rustymaze v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `RgbImage`
[INFO] [stdout]  --> src/main.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use image::{ImageBuffer, RgbImage};
[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 import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Add` and `Sub`
[INFO] [stdout]  --> src/rustymaze/mod.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Add, Sub};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug_print::debug_println`
[INFO] [stdout]  --> src/rustymaze/prim.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use debug_print::debug_println;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/rustymaze/prim.rs:295:16
[INFO] [stdout]     |
[INFO] [stdout] 295 |             if (cell_x_over > maze.min_passage_width) {
[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] 295 -             if (cell_x_over > maze.min_passage_width) {
[INFO] [stdout] 295 +             if cell_x_over > maze.min_passage_width  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/rustymaze/prim.rs:303:16
[INFO] [stdout]     |
[INFO] [stdout] 303 |             if (cell_y_over > maze.min_passage_width) {
[INFO] [stdout]     |                ^                                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 303 -             if (cell_y_over > maze.min_passage_width) {
[INFO] [stdout] 303 +             if cell_y_over > maze.min_passage_width  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RgbImage`
[INFO] [stdout]  --> src/main.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use image::{ImageBuffer, RgbImage};
[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 import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Add` and `Sub`
[INFO] [stdout]  --> src/rustymaze/mod.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Add, Sub};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug_print::debug_println`
[INFO] [stdout]  --> src/rustymaze/prim.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use debug_print::debug_println;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/rustymaze/prim.rs:295:16
[INFO] [stdout]     |
[INFO] [stdout] 295 |             if (cell_x_over > maze.min_passage_width) {
[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] 295 -             if (cell_x_over > maze.min_passage_width) {
[INFO] [stdout] 295 +             if cell_x_over > maze.min_passage_width  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/rustymaze/prim.rs:303:16
[INFO] [stdout]     |
[INFO] [stdout] 303 |             if (cell_y_over > maze.min_passage_width) {
[INFO] [stdout]     |                ^                                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 303 -             if (cell_y_over > maze.min_passage_width) {
[INFO] [stdout] 303 +             if cell_y_over > maze.min_passage_width  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entry`
[INFO] [stdout]    --> src/rustymaze/prim.rs:185:5
[INFO] [stdout]     |
[INFO] [stdout] 185 |     entry: super::Region,
[INFO] [stdout]     |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exit`
[INFO] [stdout]    --> src/rustymaze/prim.rs:186:5
[INFO] [stdout]     |
[INFO] [stdout] 186 |     exit: super::Region,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_exit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entry`
[INFO] [stdout]    --> src/rustymaze/prim.rs:185:5
[INFO] [stdout]     |
[INFO] [stdout] 185 |     entry: super::Region,
[INFO] [stdout]     |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exit`
[INFO] [stdout]    --> src/rustymaze/prim.rs:186:5
[INFO] [stdout]     |
[INFO] [stdout] 186 |     exit: super::Region,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_exit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `shrink` is never used
[INFO] [stdout]   --> src/rustymaze/mod.rs:90:10
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl Region {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 90 |   pub fn shrink(&self, point: Point) -> Region {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PrimMaze` is never constructed
[INFO] [stdout]  --> src/rustymaze/prim.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct PrimMaze {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `xy` is never used
[INFO] [stdout]   --> src/rustymaze/prim.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl Cell {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 37 |     fn xy(&self, cellsx: usize) -> (usize, usize, usize, usize) {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `neighborsProcessed` should have a snake case name
[INFO] [stdout]    --> src/rustymaze/prim.rs:224:17
[INFO] [stdout]     |
[INFO] [stdout] 224 |         let mut neighborsProcessed = 0;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `neighbors_processed`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/rustymaze/prim.rs:232:24
[INFO] [stdout]     |
[INFO] [stdout] 232 |                   panic!(format!(
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 233 | |                     "Invalid neighbor index exceeds {:?} (width {:?}): {:?}",
[INFO] [stdout] 234 | |                     cell_count, cellsx, neighbor
[INFO] [stdout] 235 | |                 ))
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 232 ~                 panic!(
[INFO] [stdout] 233 |                     "Invalid neighbor index exceeds {:?} (width {:?}): {:?}",
[INFO] [stdout] 234 |                     cell_count, cellsx, neighbor
[INFO] [stdout] 235 ~                 )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `shrink` is never used
[INFO] [stdout]   --> src/rustymaze/mod.rs:90:10
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl Region {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 90 |   pub fn shrink(&self, point: Point) -> Region {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PrimMaze` is never constructed
[INFO] [stdout]  --> src/rustymaze/prim.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct PrimMaze {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `xy` is never used
[INFO] [stdout]   --> src/rustymaze/prim.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl Cell {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 37 |     fn xy(&self, cellsx: usize) -> (usize, usize, usize, usize) {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `neighborsProcessed` should have a snake case name
[INFO] [stdout]    --> src/rustymaze/prim.rs:224:17
[INFO] [stdout]     |
[INFO] [stdout] 224 |         let mut neighborsProcessed = 0;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `neighbors_processed`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/rustymaze/prim.rs:232:24
[INFO] [stdout]     |
[INFO] [stdout] 232 |                   panic!(format!(
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 233 | |                     "Invalid neighbor index exceeds {:?} (width {:?}): {:?}",
[INFO] [stdout] 234 | |                     cell_count, cellsx, neighbor
[INFO] [stdout] 235 | |                 ))
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 232 ~                 panic!(
[INFO] [stdout] 233 |                     "Invalid neighbor index exceeds {:?} (width {:?}): {:?}",
[INFO] [stdout] 234 |                     cell_count, cellsx, neighbor
[INFO] [stdout] 235 ~                 )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.65s
[INFO] running `Command { std: "docker" "inspect" "41d933f528ea4921b94c9377ba7bb7d5fd3c99e64c2ebb3fc16e37a1e8aa56c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41d933f528ea4921b94c9377ba7bb7d5fd3c99e64c2ebb3fc16e37a1e8aa56c7", kill_on_drop: false }`
[INFO] [stdout] 41d933f528ea4921b94c9377ba7bb7d5fd3c99e64c2ebb3fc16e37a1e8aa56c7
