[INFO] fetching crate cardano-message-signing 1.0.1...
[INFO] checking cardano-message-signing-1.0.1 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate cardano-message-signing 1.0.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate cardano-message-signing 1.0.1
[INFO] finished tweaking crates.io crate cardano-message-signing 1.0.1
[INFO] tweaked toml for crates.io crate cardano-message-signing 1.0.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cardano-message-signing 1.0.1 on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to highest compatible versions
[INFO] [stderr]       Adding base64-url v1.4.13 (available: v4.0.0)
[INFO] [stderr]       Adding cbor_event v2.4.0 (available: v3.3.0)
[INFO] [stderr]       Adding cryptoxide v0.3.6 (available: v0.6.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 3e406d9f813f7765390156ff79c4657595ba0fd864b1b5fa4bb53a9aacc7721a
[INFO] running `Command { std: "docker" "start" "3e406d9f813f7765390156ff79c4657595ba0fd864b1b5fa4bb53a9aacc7721a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e406d9f813f7765390156ff79c4657595ba0fd864b1b5fa4bb53a9aacc7721a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3e406d9f813f7765390156ff79c4657595ba0fd864b1b5fa4bb53a9aacc7721a" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e406d9f813f7765390156ff79c4657595ba0fd864b1b5fa4bb53a9aacc7721a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3e406d9f813f7765390156ff79c4657595ba0fd864b1b5fa4bb53a9aacc7721a" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking cbor_event v2.4.0
[INFO] [stderr]     Checking cryptoxide v0.3.6
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking generic-array v0.8.4
[INFO] [stderr]     Checking digest v0.6.1
[INFO] [stderr]     Checking pruefung v0.2.1
[INFO] [stderr]     Checking base64-url v1.4.13
[INFO] [stderr]     Checking cardano-message-signing v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/serialization.rs:1023:13
[INFO] [stdout]      |
[INFO] [stdout] 1023 |         let mut consume_elem = |lens: &mut Vec<cbor_event::Len>| {
[INFO] [stdout]      |             ----^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/serialization.rs:1030:13
[INFO] [stdout]      |
[INFO] [stdout] 1030 |         let mut reduce_depth = |lens: &mut Vec<cbor_event::Len>| {
[INFO] [stdout]      |             ----^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `error::DeserializeFailure`
[INFO] [stdout]    --> src/cbor.rs:665:56
[INFO] [stdout]     |
[INFO] [stdout] 665 |             Err(DeserializeError::new("CBORValueEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 665 -             Err(DeserializeError::new("CBORValueEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 665 +             Err(DeserializeError::new("CBORValueEnum", DeserializeFailure::NoVariantMatched))
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 665 -             Err(DeserializeError::new("CBORValueEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 665 +             Err(DeserializeError::new("CBORValueEnum", <error::DeserializeFailure as Into<_>>::into(DeserializeFailure::NoVariantMatched)))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `error::DeserializeFailure`
[INFO] [stdout]   --> src/serialization.rs:57:52
[INFO] [stdout]    |
[INFO] [stdout] 57 |             Err(DeserializeError::new("LabelEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 57 -             Err(DeserializeError::new("LabelEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 57 +             Err(DeserializeError::new("LabelEnum", DeserializeFailure::NoVariantMatched))
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 57 -             Err(DeserializeError::new("LabelEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 57 +             Err(DeserializeError::new("LabelEnum", <error::DeserializeFailure as Into<_>>::into(DeserializeFailure::NoVariantMatched)))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `error::DeserializeFailure`
[INFO] [stdout]    --> src/serialization.rs:158:59
[INFO] [stdout]     |
[INFO] [stdout] 158 |             Err(DeserializeError::new("CounterSignature", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 158 -             Err(DeserializeError::new("CounterSignature", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 158 +             Err(DeserializeError::new("CounterSignature", DeserializeFailure::NoVariantMatched))
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 158 -             Err(DeserializeError::new("CounterSignature", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 158 +             Err(DeserializeError::new("CounterSignature", <error::DeserializeFailure as Into<_>>::into(DeserializeFailure::NoVariantMatched)))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `error::DeserializeFailure`
[INFO] [stdout]    --> src/serialization.rs:560:60
[INFO] [stdout]     |
[INFO] [stdout] 560 |             Err(DeserializeError::new("SignedMessageEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 560 -             Err(DeserializeError::new("SignedMessageEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 560 +             Err(DeserializeError::new("SignedMessageEnum", DeserializeFailure::NoVariantMatched))
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 560 -             Err(DeserializeError::new("SignedMessageEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 560 +             Err(DeserializeError::new("SignedMessageEnum", <error::DeserializeFailure as Into<_>>::into(DeserializeFailure::NoVariantMatched)))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cbor_other_object` is never used
[INFO] [stdout]    --> src/cbor.rs:734:8
[INFO] [stdout]     |
[INFO] [stdout] 734 |     fn cbor_other_object() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `error::DeserializeFailure`
[INFO] [stdout]    --> src/cbor.rs:665:56
[INFO] [stdout]     |
[INFO] [stdout] 665 |             Err(DeserializeError::new("CBORValueEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 665 -             Err(DeserializeError::new("CBORValueEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 665 +             Err(DeserializeError::new("CBORValueEnum", DeserializeFailure::NoVariantMatched))
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 665 -             Err(DeserializeError::new("CBORValueEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 665 +             Err(DeserializeError::new("CBORValueEnum", <error::DeserializeFailure as Into<_>>::into(DeserializeFailure::NoVariantMatched)))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `error::DeserializeFailure`
[INFO] [stdout]   --> src/serialization.rs:57:52
[INFO] [stdout]    |
[INFO] [stdout] 57 |             Err(DeserializeError::new("LabelEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 57 -             Err(DeserializeError::new("LabelEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 57 +             Err(DeserializeError::new("LabelEnum", DeserializeFailure::NoVariantMatched))
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 57 -             Err(DeserializeError::new("LabelEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 57 +             Err(DeserializeError::new("LabelEnum", <error::DeserializeFailure as Into<_>>::into(DeserializeFailure::NoVariantMatched)))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `error::DeserializeFailure`
[INFO] [stdout]    --> src/serialization.rs:158:59
[INFO] [stdout]     |
[INFO] [stdout] 158 |             Err(DeserializeError::new("CounterSignature", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 158 -             Err(DeserializeError::new("CounterSignature", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 158 +             Err(DeserializeError::new("CounterSignature", DeserializeFailure::NoVariantMatched))
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 158 -             Err(DeserializeError::new("CounterSignature", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 158 +             Err(DeserializeError::new("CounterSignature", <error::DeserializeFailure as Into<_>>::into(DeserializeFailure::NoVariantMatched)))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `error::DeserializeFailure`
[INFO] [stdout]    --> src/serialization.rs:560:60
[INFO] [stdout]     |
[INFO] [stdout] 560 |             Err(DeserializeError::new("SignedMessageEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 560 -             Err(DeserializeError::new("SignedMessageEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 560 +             Err(DeserializeError::new("SignedMessageEnum", DeserializeFailure::NoVariantMatched))
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 560 -             Err(DeserializeError::new("SignedMessageEnum", DeserializeFailure::NoVariantMatched.into()))
[INFO] [stdout] 560 +             Err(DeserializeError::new("SignedMessageEnum", <error::DeserializeFailure as Into<_>>::into(DeserializeFailure::NoVariantMatched)))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cardano-message-signing` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]     --> src/serialization.rs:1161:9
[INFO] [stdout]      |
[INFO] [stdout] 1161 |         header_map.set_header(&label_str("i am a string key"), &CBORValue::new_text(String::from("also a string")));
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1161 |         let _ = header_map.set_header(&label_str("i am a string key"), &CBORValue::new_text(String::from("also a string")));
[INFO] [stdout]      |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]     --> src/serialization.rs:1162:9
[INFO] [stdout]      |
[INFO] [stdout] 1162 | ...   header_map.set_header(&label_int(-6), &CBORValue::new_tagged(&TaggedCBOR::new(to_bignum(3u64), &CBORValue::new_special(&CBORSpecial::new_null()))));
[INFO] [stdout]      |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1162 |         let _ = header_map.set_header(&label_int(-6), &CBORValue::new_tagged(&TaggedCBOR::new(to_bignum(3u64), &CBORValue::new_special(&CBORSpecial::new_null()))));
[INFO] [stdout]      |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]     --> src/serialization.rs:1233:9
[INFO] [stdout]      |
[INFO] [stdout] 1233 |         cose_key.set_header(&label_str("dsfdsf"), &CBORValue::new_int(&Int::new_i32(-100)));
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1233 |         let _ = cose_key.set_header(&label_str("dsfdsf"), &CBORValue::new_int(&Int::new_i32(-100)));
[INFO] [stdout]      |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]     --> src/serialization.rs:1234:9
[INFO] [stdout]      |
[INFO] [stdout] 1234 |         cose_key.set_header(&label_int(-50), &CBORValue::new_text(String::from("134da2234fdsfd")));
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1234 |         let _ = cose_key.set_header(&label_int(-50), &CBORValue::new_text(String::from("134da2234fdsfd")));
[INFO] [stdout]      |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cardano-message-signing` (lib test) due to 4 previous errors; 7 warnings emitted
[INFO] [stderr] warning: unused dependency `hex`
[INFO] [stderr]   --> Cargo.toml:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 | [dependencies.hex]
[INFO] [stderr]    |               ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `hex`
[INFO] [stderr] warning: `cardano-message-signing` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "inspect" "3e406d9f813f7765390156ff79c4657595ba0fd864b1b5fa4bb53a9aacc7721a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e406d9f813f7765390156ff79c4657595ba0fd864b1b5fa4bb53a9aacc7721a", kill_on_drop: false }`
[INFO] [stdout] 3e406d9f813f7765390156ff79c4657595ba0fd864b1b5fa4bb53a9aacc7721a
