[INFO] cloning repository https://github.com/Malax/libcnb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Malax/libcnb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMalax%2Flibcnb", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 076438871d8bc415227613e14988f5b1cde4e2b8
[INFO] checking Malax/libcnb against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMalax%2Flibcnb" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
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[INFO] validating manifest of git repo https://github.com/Malax/libcnb on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
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[INFO] started tweaking git repo https://github.com/Malax/libcnb
[INFO] finished tweaking git repo https://github.com/Malax/libcnb
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[INFO] [stderr]    Compiling serde_derive v1.0.197
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[INFO] [stderr]     Checking libcnb-proc-macros v0.19.0 (/opt/rustwide/workdir/libcnb-proc-macros)
[INFO] [stderr]     Checking toml v0.8.12
[INFO] [stderr]     Checking libcnb-common v0.19.0 (/opt/rustwide/workdir/libcnb-common)
[INFO] [stderr]     Checking libcnb-data v0.19.0 (/opt/rustwide/workdir/libcnb-data)
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> libcnb-data/src/buildpack/api.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> libcnb-data/src/buildpack/version.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> libcnb-data/src/buildpack/api.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> libcnb-data/src/buildpack/version.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SbomFormat` is imported redundantly
[INFO] [stdout]    --> libcnb-data/src/buildpack/mod.rs:235:9
[INFO] [stdout]     |
[INFO] [stdout] 234 |     use super::*;
[INFO] [stdout]     |         -------- the item `SbomFormat` is already imported here
[INFO] [stdout] 235 |     use crate::sbom::SbomFormat;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libcnb_newtype` is imported redundantly
[INFO] [stdout]    --> libcnb-data/src/newtypes.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 52  | / macro_rules! libcnb_newtype {
[INFO] [stdout] 53  | |     (
[INFO] [stdout] 54  | |         $path:path,
[INFO] [stdout] 55  | |         $(#[$macro_attributes:meta])*
[INFO] [stdout] ...   |
[INFO] [stdout] 186 | |     };
[INFO] [stdout] 187 | | }
[INFO] [stdout]     | |_- the item `libcnb_newtype` is already defined here
[INFO] [stdout] ...
[INFO] [stdout] 193 |       use super::libcnb_newtype;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking libcnb v0.19.0 (/opt/rustwide/workdir/libcnb)
[INFO] [stderr]     Checking libcnb-package v0.19.0 (/opt/rustwide/workdir/libcnb-package)
[INFO] [stderr]     Checking libcnb-test v0.19.0 (/opt/rustwide/workdir/libcnb-test)
[INFO] [stderr]     Checking libcnb-cargo v0.19.0 (/opt/rustwide/workdir/libcnb-cargo)
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking readonly-layer-files v0.0.0 (/opt/rustwide/workdir/test-buildpacks/readonly-layer-files)
[INFO] [stderr]     Checking store v0.0.0 (/opt/rustwide/workdir/test-buildpacks/store)
[INFO] [stderr]     Checking examples-basics v0.0.0 (/opt/rustwide/workdir/examples/basics)
[INFO] [stderr]     Checking examples-execd v0.0.0 (/opt/rustwide/workdir/examples/execd)
[INFO] [stderr]     Checking sbom v0.0.0 (/opt/rustwide/workdir/test-buildpacks/sbom)
[INFO] [stderr]     Checking libherokubuildpack v0.19.0 (/opt/rustwide/workdir/libherokubuildpack)
[INFO] [stderr]     Checking tracing v0.0.0 (/opt/rustwide/workdir/test-buildpacks/tracing)
[INFO] [stdout] warning: the item `LayerContentMetadata` is imported redundantly
[INFO] [stdout]    --> libcnb/src/layer/handling.rs:465:47
[INFO] [stdout]     |
[INFO] [stdout] 464 |     use super::*;
[INFO] [stdout]     |         -------- the item `LayerContentMetadata` is already imported here
[INFO] [stdout] 465 |     use crate::data::layer_content_metadata::{LayerContentMetadata, LayerTypes};
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `GenericMetadata` is imported redundantly
[INFO] [stdout]    --> libcnb/src/layer/handling.rs:467:9
[INFO] [stdout]     |
[INFO] [stdout] 464 |     use super::*;
[INFO] [stdout]     |         -------- the item `GenericMetadata` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 467 |     use crate::generic::GenericMetadata;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `fs` is imported redundantly
[INFO] [stdout]    --> libcnb/src/layer/handling.rs:472:9
[INFO] [stdout]     |
[INFO] [stdout] 464 |     use super::*;
[INFO] [stdout]     |         -------- the item `fs` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 472 |     use std::fs;
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `fs` is imported redundantly
[INFO] [stdout]   --> libcnb/src/platform.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     use super::*;
[INFO] [stdout]    |         -------- the item `fs` is already imported here
[INFO] [stdout] 67 |     use std::ffi::OsString;
[INFO] [stdout] 68 |     use std::fs;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `fs` is imported redundantly
[INFO] [stdout]   --> libherokubuildpack/src/fs.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     use std::fs;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     use super::*;
[INFO] [stdout]    |         -------- the item `fs` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 47.67s
[INFO] running `Command { std: "docker" "inspect" "4b946f6989f17da248fe538c4178a43c54ae9c48a49b66a709440d77f5473fc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b946f6989f17da248fe538c4178a43c54ae9c48a49b66a709440d77f5473fc3", kill_on_drop: false }`
[INFO] [stdout] 4b946f6989f17da248fe538c4178a43c54ae9c48a49b66a709440d77f5473fc3