[INFO] cloning repository https://github.com/juan-fdz-hawa/learning_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/juan-fdz-hawa/learning_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuan-fdz-hawa%2Flearning_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuan-fdz-hawa%2Flearning_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de56c8d59dad71761456c4e5d66d0bc5c700b4aa
[INFO] checking juan-fdz-hawa/learning_rust against master#3645249d79dfb136b5d8de3ce153d19d6698d92d for pr-153975
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuan-fdz-hawa%2Flearning_rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/juan-fdz-hawa/learning_rust
[INFO] finished tweaking git repo https://github.com/juan-fdz-hawa/learning_rust
[INFO] tweaked toml for git repo https://github.com/juan-fdz-hawa/learning_rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/juan-fdz-hawa/learning_rust on toolchain 3645249d79dfb136b5d8de3ce153d19d6698d92d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3645249d79dfb136b5d8de3ce153d19d6698d92d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/juan-fdz-hawa/learning_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" "+3645249d79dfb136b5d8de3ce153d19d6698d92d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded anyhow v1.0.93
[INFO] [stderr]   Downloaded cpufeatures v0.2.15
[INFO] [stderr]   Downloaded cc v1.1.37
[INFO] [stderr]   Downloaded rustls v0.23.16
[INFO] [stderr]   Downloaded rustix v0.38.40
[INFO] [stderr]   Downloaded libc v0.2.162
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3645249d79dfb136b5d8de3ce153d19d6698d92d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d9ce290d92afb973ebfa9074a354ea83dea7cbd97d808e787eade01b76f2557
[INFO] running `Command { std: "docker" "start" "-a" "4d9ce290d92afb973ebfa9074a354ea83dea7cbd97d808e787eade01b76f2557", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d9ce290d92afb973ebfa9074a354ea83dea7cbd97d808e787eade01b76f2557", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d9ce290d92afb973ebfa9074a354ea83dea7cbd97d808e787eade01b76f2557", kill_on_drop: false }`
[INFO] [stdout] 4d9ce290d92afb973ebfa9074a354ea83dea7cbd97d808e787eade01b76f2557
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3645249d79dfb136b5d8de3ce153d19d6698d92d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db79d722200616bef1bd8f95b12a0b57e2a7560ceaaf10ab71d07959384a6420
[INFO] running `Command { std: "docker" "start" "-a" "db79d722200616bef1bd8f95b12a0b57e2a7560ceaaf10ab71d07959384a6420", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling libc v0.2.162
[INFO] [stderr]    Compiling serde v1.0.215
[INFO] [stderr]     Checking bytes v1.8.0
[INFO] [stderr]    Compiling cc v1.1.37
[INFO] [stderr]    Compiling serde_json v1.0.132
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]     Checking hashbrown v0.15.1
[INFO] [stderr]     Checking litemap v0.7.3
[INFO] [stderr]    Compiling writeable v0.5.5
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling icu_locid_transform_data v1.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling pin-project-lite v0.2.15
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling icu_properties_data v1.5.0
[INFO] [stderr]    Compiling anyhow v1.0.93
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling write16 v1.0.0
[INFO] [stderr]    Compiling futures-sink v0.3.31
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[INFO] [stderr]    Compiling utf8_iter v1.0.4
[INFO] [stderr]    Compiling utf16_iter v1.0.5
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]     Checking allocator-api2 v0.2.20
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[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling futures-task v0.3.31
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[INFO] [stderr]    Compiling futures-util v0.3.31
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[INFO] [stderr]    Compiling crypto-common v0.1.6
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[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
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[INFO] [stderr]     Checking parking_lot v0.12.3
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[INFO] [stderr]     Checking sync_wrapper v1.0.1
[INFO] [stderr]    Compiling openssl-sys v0.9.104
[INFO] [stderr]    Compiling libsqlite3-sys v0.30.1
[INFO] [stderr]    Compiling tokio v1.41.1
[INFO] [stderr]    Compiling flume v0.11.1
[INFO] [stderr]    Compiling hashlink v0.9.1
[INFO] [stderr]    Compiling futures-intrusive v0.5.0
[INFO] [stderr]    Compiling fastrand v2.2.0
[INFO] [stderr]    Compiling rustversion v1.0.18
[INFO] [stderr]    Compiling openssl v0.10.68
[INFO] [stderr]    Compiling native-tls v0.2.12
[INFO] [stderr]    Compiling atoi v2.0.0
[INFO] [stderr]    Compiling thiserror v2.0.3
[INFO] [stderr]     Checking clap_lex v0.7.2
[INFO] [stderr]     Checking rustls-pki-types v1.10.0
[INFO] [stderr]     Checking clap_builder v4.5.20
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking dashmap v6.1.0
[INFO] [stderr]     Checking rwlocks v0.1.0 (/opt/rustwide/workdir/session_2/rwlocks)
[INFO] [stderr]     Checking variables v0.1.0 (/opt/rustwide/workdir/session_1/variables)
[INFO] [stderr]     Checking hello_world v0.1.0 (/opt/rustwide/workdir/session_1/hello_world)
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]  --> session_1/variables/src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let m = 5;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `n` is assigned to, but never used
[INFO] [stdout]   --> session_1/variables/src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut n = 5;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_n` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `n` is never read
[INFO] [stdout]   --> session_1/variables/src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     n += 1;
[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] [stderr]     Checking text_input v0.1.0 (/opt/rustwide/workdir/session_1/text_input)
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking channels1 v0.1.0 (/opt/rustwide/workdir/session_2/channels1)
[INFO] [stderr]     Checking divide_work v0.1.0 (/opt/rustwide/workdir/session_2/divide_work)
[INFO] [stderr]     Checking mutexes v0.1.0 (/opt/rustwide/workdir/session_2/mutexes)
[INFO] [stderr]     Checking atomic v0.1.0 (/opt/rustwide/workdir/session_2/atomic)
[INFO] [stderr]     Checking learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rustls-pemfile v2.2.0
[INFO] [stderr]     Checking hello_thread v0.1.0 (/opt/rustwide/workdir/session_2/hello_thread)
[INFO] [stderr]     Checking thread_builder v0.1.0 (/opt/rustwide/workdir/session_2/thread_builder)
[INFO] [stderr]     Checking memory_semantics v0.1.0 (/opt/rustwide/workdir/session_1/memory_semantics)
[INFO] [stdout] warning: unused variable: `handler`
[INFO] [stdout]   --> session_2/thread_builder/src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let handler = thread::Builder::new()
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking deadlock v0.1.0 (/opt/rustwide/workdir/session_2/deadlock)
[INFO] [stderr]     Checking dashing v0.1.0 (/opt/rustwide/workdir/session_2/dashing)
[INFO] [stdout] warning: unused variable: `lock`
[INFO] [stdout]  --> session_2/deadlock/src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let lock = MY_SHARED.lock().unwrap();
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_lock`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock`
[INFO] [stdout]   --> session_2/deadlock/src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let lock = MY_SHARED.lock().unwrap();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock`
[INFO] [stdout]   --> session_2/deadlock/src/main.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let lock = MY_SHARED.lock().unwrap();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking scoped_threads v0.1.0 (/opt/rustwide/workdir/session_2/scoped_threads)
[INFO] [stdout] warning: unused variable: `lock`
[INFO] [stdout]  --> session_2/deadlock/src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let lock = MY_SHARED.lock().unwrap();
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_lock`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock`
[INFO] [stdout]   --> session_2/deadlock/src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let lock = MY_SHARED.lock().unwrap();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock`
[INFO] [stdout]   --> session_2/deadlock/src/main.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let lock = MY_SHARED.lock().unwrap();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tempfile v3.14.0
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]  --> session_1/variables/src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let m = 5;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `n` is assigned to, but never used
[INFO] [stdout]   --> session_1/variables/src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut n = 5;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_n` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `n` is never read
[INFO] [stdout]   --> session_1/variables/src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     n += 1;
[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: unused variable: `handler`
[INFO] [stdout]   --> session_2/thread_builder/src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let handler = thread::Builder::new()
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling tokio-stream v0.1.16
[INFO] [stderr]    Compiling zerofrom-derive v0.1.4
[INFO] [stderr]    Compiling yoke-derive v0.7.4
[INFO] [stderr]    Compiling zerovec-derive v0.10.3
[INFO] [stderr]    Compiling serde_derive v1.0.215
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling icu_provider_macros v1.5.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling async-trait v0.1.83
[INFO] [stderr]    Compiling clap_derive v4.5.18
[INFO] [stderr]    Compiling thiserror-impl v2.0.3
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking zerofrom v0.1.4
[INFO] [stderr]     Checking yoke v0.7.4
[INFO] [stderr]     Checking clap v4.5.20
[INFO] [stderr]     Checking zerovec v0.10.4
[INFO] [stderr]     Checking tinystr v0.7.6
[INFO] [stderr]     Checking icu_collections v1.5.0
[INFO] [stderr]     Checking icu_locid v1.5.0
[INFO] [stderr]     Checking icu_provider v1.5.0
[INFO] [stderr]     Checking icu_locid_transform v1.5.0
[INFO] [stderr]     Checking http-body-util v0.1.2
[INFO] [stderr]     Checking icu_properties v1.5.1
[INFO] [stderr]     Checking axum-core v0.4.5
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking hello_async v0.1.0 (/opt/rustwide/workdir/session_3/hello_async)
[INFO] [stdout] warning: unused variable: `future`
[INFO] [stdout]   --> session_3/hello_async/src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let future = say_hello();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_future`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `future`
[INFO] [stdout]   --> session_3/hello_async/src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let future = say_hello();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_future`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tokio-util v0.7.12
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking tower v0.5.1
[INFO] [stderr]     Checking blocking v0.1.0 (/opt/rustwide/workdir/session_3/blocking)
[INFO] [stderr]     Checking hello_tokio v0.1.0 (/opt/rustwide/workdir/session_3/hello_tokio)
[INFO] [stderr]     Checking logspan v0.1.0 (/opt/rustwide/workdir/session_3/logspan)
[INFO] [stdout] warning: unused import: `thread::sleep`
[INFO] [stdout]  --> session_3/blocking/src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{thread::sleep, time::Duration};
[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: `thread::sleep`
[INFO] [stdout]  --> session_3/blocking/src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{thread::sleep, time::Duration};
[INFO] [stdout]   |           ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main_long_way` is never used
[INFO] [stdout]   --> session_3/hello_tokio/src/main.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn main_long_way() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main_long_way` is never used
[INFO] [stdout]   --> session_3/hello_tokio/src/main.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn main_long_way() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]     Checking serde_path_to_error v0.1.16
[INFO] [stderr]     Checking h2 v0.4.6
[INFO] [stderr]     Checking icu_normalizer v1.5.0
[INFO] [stderr]     Checking idna_adapter v1.2.0
[INFO] [stderr]     Checking idna v1.0.3
[INFO] [stderr]     Checking authentication v0.1.0 (/opt/rustwide/workdir/session_1/authentication)
[INFO] [stderr]     Checking errors v0.1.0 (/opt/rustwide/workdir/session_3/errors)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> session_3/errors/src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     anyhow::bail!("Oh no! We can't go on");
[INFO] [stdout]    |     -------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 34 |     Ok(users)
[INFO] [stdout]    |     ^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `users`
[INFO] [stdout]   --> session_3/errors/src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let users: Vec<User> = serde_json::from_str(&raw_text)?;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_users`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> session_3/errors/src/main.rs:40:69
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let users: Vec<User> = serde_json::from_str(&raw_text).map_err(|e| UsersError::AnotherThing)?;
[INFO] [stdout]    |                                                                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> session_3/errors/src/main.rs:39:62
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let raw_text = std::fs::read_to_string(my_path).map_err(|e| UsersError::NoUserFound)?;
[INFO] [stdout]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> session_3/errors/src/main.rs:55:15
[INFO] [stdout]    |
[INFO] [stdout] 55 |     if let Ok(contents) = file_uppercase() {
[INFO] [stdout]    |               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> session_3/errors/src/main.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct User {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UsersError` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum UsersError {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `GenericType` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 | type GenericType<T> = std::result::Result<T, Box<dyn std::error::Error>>;
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `load_users` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn load_users() -> GenericType<Vec<User>> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `load_users_2` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn load_users_2() -> anyhow::Result<Vec<User>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `load_users_3` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn load_users_3() -> Result<Vec<User>, UsersError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `maybe_read_a_file` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn maybe_read_a_file() -> Result<String, std::io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `file_uppercase` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn file_uppercase() -> Result<String, std::io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn example() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> session_3/errors/src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     anyhow::bail!("Oh no! We can't go on");
[INFO] [stdout]    |     -------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 34 |     Ok(users)
[INFO] [stdout]    |     ^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `users`
[INFO] [stdout]   --> session_3/errors/src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let users: Vec<User> = serde_json::from_str(&raw_text)?;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_users`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> session_3/errors/src/main.rs:40:69
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let users: Vec<User> = serde_json::from_str(&raw_text).map_err(|e| UsersError::AnotherThing)?;
[INFO] [stdout]    |                                                                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> session_3/errors/src/main.rs:39:62
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let raw_text = std::fs::read_to_string(my_path).map_err(|e| UsersError::NoUserFound)?;
[INFO] [stdout]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> session_3/errors/src/main.rs:55:15
[INFO] [stdout]    |
[INFO] [stdout] 55 |     if let Ok(contents) = file_uppercase() {
[INFO] [stdout]    |               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> session_3/errors/src/main.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct User {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UsersError` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum UsersError {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `GenericType` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 | type GenericType<T> = std::result::Result<T, Box<dyn std::error::Error>>;
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `load_users` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn load_users() -> GenericType<Vec<User>> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `load_users_2` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn load_users_2() -> anyhow::Result<Vec<User>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `load_users_3` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn load_users_3() -> Result<Vec<User>, UsersError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `maybe_read_a_file` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn maybe_read_a_file() -> Result<String, std::io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `file_uppercase` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn file_uppercase() -> Result<String, std::io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]   --> session_3/errors/src/main.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn example() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_admin_usernames` is never used
[INFO] [stdout]   --> session_1/authentication/src/lib.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn get_admin_usernames() -> Vec<String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_users_map` is never used
[INFO] [stdout]   --> session_1/authentication/src/lib.rs:84:4
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn get_users_map() -> HashMap<String, User> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_admin_usernames` is never used
[INFO] [stdout]   --> session_1/authentication/src/lib.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn get_admin_usernames() -> Vec<String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_users_map` is never used
[INFO] [stdout]   --> session_1/authentication/src/lib.rs:84:4
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn get_users_map() -> HashMap<String, User> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking login_manager v0.1.0 (/opt/rustwide/workdir/session_1/login_manager)
[INFO] [stderr]     Checking login v0.1.0 (/opt/rustwide/workdir/session_1/login)
[INFO] [stderr]     Checking url v2.5.3
[INFO] [stdout] warning: unused variable: `username`
[INFO] [stdout]   --> session_1/login_manager/src/main.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn add_user(username: String, password: String, is_admin: bool) {}
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_username`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `password`
[INFO] [stdout]   --> session_1/login_manager/src/main.rs:35:31
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn add_user(username: String, password: String, is_admin: bool) {}
[INFO] [stdout]    |                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_password`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_admin`
[INFO] [stdout]   --> session_1/login_manager/src/main.rs:35:49
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn add_user(username: String, password: String, is_admin: bool) {}
[INFO] [stdout]    |                                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_admin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `username`
[INFO] [stdout]   --> session_1/login_manager/src/main.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn add_user(username: String, password: String, is_admin: bool) {}
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_username`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `password`
[INFO] [stdout]   --> session_1/login_manager/src/main.rs:35:31
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn add_user(username: String, password: String, is_admin: bool) {}
[INFO] [stdout]    |                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_password`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_admin`
[INFO] [stdout]   --> session_1/login_manager/src/main.rs:35:49
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn add_user(username: String, password: String, is_admin: bool) {}
[INFO] [stdout]    |                                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_admin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking sqlx-core v0.8.2
[INFO] [stderr]     Checking sqlx-sqlite v0.8.2
[INFO] [stderr]     Checking hyper v1.5.0
[INFO] [stderr]     Checking hyper-util v0.1.10
[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking axum v0.7.7
[INFO] [stderr]     Checking reqwest v0.12.9
[INFO] [stderr]     Checking restclient v0.1.0 (/opt/rustwide/workdir/session_3/restclient)
[INFO] [stdout] warning: struct `Weather` is never constructed
[INFO] [stdout]  --> session_3/restclient/src/main.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Weather {
[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 `CurrentWeather` is never constructed
[INFO] [stdout]   --> session_3/restclient/src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct CurrentWeather {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Weather` is never constructed
[INFO] [stdout]  --> session_3/restclient/src/main.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Weather {
[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 `CurrentWeather` is never constructed
[INFO] [stdout]   --> session_3/restclient/src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct CurrentWeather {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling sqlx-macros-core v0.8.2
[INFO] [stderr]    Compiling sqlx-macros v0.8.2
[INFO] [stderr]     Checking sqlx v0.8.2
[INFO] [stderr]     Checking db_access v0.1.0 (/opt/rustwide/workdir/session_3/db_access)
[INFO] [stdout] warning: fields `id` and `message` are never read
[INFO] [stdout]  --> session_3/db_access/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Message {
[INFO] [stdout]   |        ------- fields in this struct
[INFO] [stdout] 6 |     id: i64,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     message: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Message` 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: function `update_message` is never used
[INFO] [stdout]   --> session_3/db_access/src/main.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | async fn update_message(id: i64, message: &str, pool: &sqlx::SqlitePool) -> anyhow::Result<()> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking web_service v0.1.0 (/opt/rustwide/workdir/session_3/web_service)
[INFO] [stdout] warning: fields `id` and `message` are never read
[INFO] [stdout]  --> session_3/db_access/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Message {
[INFO] [stdout]   |        ------- fields in this struct
[INFO] [stdout] 6 |     id: i64,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     message: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Message` 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: function `update_message` is never used
[INFO] [stdout]   --> session_3/db_access/src/main.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | async fn update_message(id: i64, message: &str, pool: &sqlx::SqlitePool) -> anyhow::Result<()> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] running `Command { std: "docker" "inspect" "db79d722200616bef1bd8f95b12a0b57e2a7560ceaaf10ab71d07959384a6420", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db79d722200616bef1bd8f95b12a0b57e2a7560ceaaf10ab71d07959384a6420", kill_on_drop: false }`
[INFO] [stdout] db79d722200616bef1bd8f95b12a0b57e2a7560ceaaf10ab71d07959384a6420
