[INFO] cloning repository https://github.com/UnicornRust/rust-crawler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/UnicornRust/rust-crawler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnicornRust%2Frust-crawler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnicornRust%2Frust-crawler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47ac13a6cacfe25c9f2e57f0fafdbd7a5ce639fb
[INFO] checking UnicornRust/rust-crawler against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnicornRust%2Frust-crawler" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/UnicornRust/rust-crawler on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/UnicornRust/rust-crawler
[INFO] finished tweaking git repo https://github.com/UnicornRust/rust-crawler
[INFO] tweaked toml for git repo https://github.com/UnicornRust/rust-crawler written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/UnicornRust/rust-crawler 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f583d8c53b7d370c7b0bb7c3efdc4f7baf6c05025e176c079cac963f6dca701d
[INFO] running `Command { std: "docker" "start" "-a" "f583d8c53b7d370c7b0bb7c3efdc4f7baf6c05025e176c079cac963f6dca701d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f583d8c53b7d370c7b0bb7c3efdc4f7baf6c05025e176c079cac963f6dca701d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f583d8c53b7d370c7b0bb7c3efdc4f7baf6c05025e176c079cac963f6dca701d", kill_on_drop: false }`
[INFO] [stdout] f583d8c53b7d370c7b0bb7c3efdc4f7baf6c05025e176c079cac963f6dca701d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c3fa1996416cec7d3aa1c3ac76119c4a033789390e9c4759856ee17bbc9a451
[INFO] running `Command { std: "docker" "start" "-a" "3c3fa1996416cec7d3aa1c3ac76119c4a033789390e9c4759856ee17bbc9a451", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking pin-project-lite v0.2.14
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[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]     Checking parking v2.2.0
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]     Checking futures-core v0.3.30
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[INFO] [stderr]     Checking tinyvec_macros v0.1.1
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[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling unicase v2.7.0
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[INFO] [stderr]     Checking unicode-bidi v0.3.15
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[INFO] [stderr]    Compiling slab v0.4.9
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[INFO] [stderr]    Compiling phf_shared v0.10.0
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[INFO] [stderr]     Checking futures v0.1.31
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[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking event-listener v4.0.3
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[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking unicode-normalization v0.1.23
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[INFO] [stderr]     Checking tracing v0.1.40
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[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking async-lock v3.3.0
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]    Compiling curl v0.4.46
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling rustix v0.37.27
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking async-task v4.7.0
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
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[INFO] [stderr]    Compiling openssl-sys v0.9.102
[INFO] [stderr]    Compiling libz-sys v1.1.16
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.9+1.58.0
[INFO] [stderr]    Compiling curl-sys v0.4.72+curl-8.6.0
[INFO] [stderr]     Checking atomic-waker v1.1.2
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking futf v0.1.5
[INFO] [stderr]     Checking piper v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking async-channel v2.2.0
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]    Compiling async-io v1.13.0
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[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]    Compiling isahc v0.7.6
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking waker-fn v1.1.1
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking idna v0.1.5
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[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]    Compiling phf_generator v0.10.0
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[INFO] [stderr]    Compiling string_cache_codegen v0.5.2
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[INFO] [stderr]     Checking crossbeam-channel v0.3.9
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[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking itoa v1.0.11
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[INFO] [stderr]     Checking mime v0.3.17
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]    Compiling markup5ever v0.10.1
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking httparse v1.8.0
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking string_cache v0.8.7
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking surf v1.0.3
[INFO] [stderr]     Checking polling v3.6.0
[INFO] [stderr]     Checking async-io v2.3.2
[INFO] [stderr]    Compiling html5ever v0.25.2
[INFO] [stderr]     Checking async-global-executor v2.4.1
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking crawler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/fetch.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/fetch.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::string::String`
[INFO] [stdout]  --> src/parse.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `html5ever::tendril::TendrilSink`
[INFO] [stdout]  --> src/parse.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use html5ever::tendril::TendrilSink;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::string::String`
[INFO] [stdout]  --> src/parse.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `html5ever::parse_document`
[INFO] [stdout]  --> src/parse.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use html5ever::parse_document;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `html5ever::tendril::TendrilSink`
[INFO] [stdout]  --> src/parse.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use html5ever::tendril::TendrilSink;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `html5ever::interface::Attribute`
[INFO] [stdout]  --> src/parse.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use html5ever::interface::Attribute;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `html5ever::parse_document`
[INFO] [stdout]  --> src/parse.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use html5ever::parse_document;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `html5ever::interface::Attribute`
[INFO] [stdout]  --> src/parse.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use html5ever::interface::Attribute;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line_number`
[INFO] [stdout]   --> src/crawl.rs:28:47
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn process_token(&mut self, token: Token, line_number: u64) -> TokenSinkResult<Self::Handle> {
[INFO] [stdout]    |                                               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_line_number`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line_number`
[INFO] [stdout]   --> src/crawl.rs:28:47
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn process_token(&mut self, token: Token, line_number: u64) -> TokenSinkResult<Self::Handle> {
[INFO] [stdout]    |                                               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_line_number`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fetch` is never used
[INFO] [stdout]  --> src/fetch.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn fetch() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fetch` is never used
[INFO] [stdout]  --> src/fetch.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn fetch() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | /     task::block_on(async {
[INFO] [stdout] 9  | |         // box_crawl(vec![Url::parse("https://www.rust-lang.org").unwrap()], 1, 2).await
[INFO] [stdout] 10 | |         box_crawl(vec![Url::parse("https://www.apple.com").unwrap()], 1, 2).await
[INFO] [stdout] 11 | |     });
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 8  |     let _ = task::block_on(async {
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | /     task::block_on(async {
[INFO] [stdout] 9  | |         // box_crawl(vec![Url::parse("https://www.rust-lang.org").unwrap()], 1, 2).await
[INFO] [stdout] 10 | |         box_crawl(vec![Url::parse("https://www.apple.com").unwrap()], 1, 2).await
[INFO] [stdout] 11 | |     });
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 8  |     let _ = task::block_on(async {
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.26s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "3c3fa1996416cec7d3aa1c3ac76119c4a033789390e9c4759856ee17bbc9a451", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c3fa1996416cec7d3aa1c3ac76119c4a033789390e9c4759856ee17bbc9a451", kill_on_drop: false }`
[INFO] [stdout] 3c3fa1996416cec7d3aa1c3ac76119c4a033789390e9c4759856ee17bbc9a451