[INFO] fetching crate mutf8 0.5.0...
[INFO] testing mutf8-0.5.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate mutf8 0.5.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate mutf8 0.5.0
[INFO] finished tweaking crates.io crate mutf8 0.5.0
[INFO] tweaked toml for crates.io crate mutf8 0.5.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mutf8 0.5.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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" "+beta-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b1824c13de33e50dafe7dcd0701e171140e808514b2e78f04b61b17ada11afb
[INFO] running `Command { std: "docker" "start" "-a" "7b1824c13de33e50dafe7dcd0701e171140e808514b2e78f04b61b17ada11afb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b1824c13de33e50dafe7dcd0701e171140e808514b2e78f04b61b17ada11afb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b1824c13de33e50dafe7dcd0701e171140e808514b2e78f04b61b17ada11afb", kill_on_drop: false }`
[INFO] [stdout] 7b1824c13de33e50dafe7dcd0701e171140e808514b2e78f04b61b17ada11afb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d8d25268ae26a9237a3939e8ae71f157c11546a0edf1847b652c2dfe345909f
[INFO] running `Command { std: "docker" "start" "-a" "1d8d25268ae26a9237a3939e8ae71f157c11546a0edf1847b652c2dfe345909f", kill_on_drop: false }`
[INFO] [stderr]    Compiling mutf8 v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]  --> src/mutf8.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn utf8_to_mutf8(input: &[u8]) -> Result<Cow<[u8]>> {
[INFO] [stdout]   |                             ^^^^^            ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]   |                             |
[INFO] [stdout]   |                             the lifetime is elided here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn utf8_to_mutf8(input: &[u8]) -> Result<Cow<'_, [u8]>> {
[INFO] [stdout]   |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/mutf8.rs:100:29
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub fn mutf8_to_utf8(input: &[u8]) -> Result<Cow<[u8]>> {
[INFO] [stdout]     |                             ^^^^^            ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub fn mutf8_to_utf8(input: &[u8]) -> Result<Cow<'_, [u8]>> {
[INFO] [stdout]     |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/str.rs:103:23
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn as_utf8_bytes(&self) -> MResult<Cow<[u8]>> {
[INFO] [stdout]     |                          ^^^^^             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn as_utf8_bytes(&self) -> MResult<Cow<'_, [u8]>> {
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/str.rs:194:26
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub fn from_utf8(bytes: &[u8]) -> MResult<Cow<mstr>> {
[INFO] [stdout]     |                             ^^^^^             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub fn from_utf8(bytes: &[u8]) -> MResult<Cow<'_, mstr>> {
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/str.rs:246:16
[INFO] [stdout]     |
[INFO] [stdout] 246 |     pub fn to_str(&self) -> MResult<Cow<str>> {
[INFO] [stdout]     |                   ^^^^^             ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 246 |     pub fn to_str(&self) -> MResult<Cow<'_, str>> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/str.rs:250:17
[INFO] [stdout]     |
[INFO] [stdout] 250 |     pub fn to_utf8(&self) -> MResult<Cow<str>> {
[INFO] [stdout]     |                    ^^^^^             ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 250 |     pub fn to_utf8(&self) -> MResult<Cow<'_, str>> {
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "1d8d25268ae26a9237a3939e8ae71f157c11546a0edf1847b652c2dfe345909f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d8d25268ae26a9237a3939e8ae71f157c11546a0edf1847b652c2dfe345909f", kill_on_drop: false }`
[INFO] [stdout] 1d8d25268ae26a9237a3939e8ae71f157c11546a0edf1847b652c2dfe345909f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 430e8b45914a724dd6de020da7a7d117b3c9bcc21e3c06b9d583cf6a18fe263d
[INFO] running `Command { std: "docker" "start" "-a" "430e8b45914a724dd6de020da7a7d117b3c9bcc21e3c06b9d583cf6a18fe263d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]  --> src/mutf8.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn utf8_to_mutf8(input: &[u8]) -> Result<Cow<[u8]>> {
[INFO] [stdout]   |                             ^^^^^            ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]   |                             |
[INFO] [stdout]   |                             the lifetime is elided here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn utf8_to_mutf8(input: &[u8]) -> Result<Cow<'_, [u8]>> {
[INFO] [stdout]   |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/mutf8.rs:100:29
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub fn mutf8_to_utf8(input: &[u8]) -> Result<Cow<[u8]>> {
[INFO] [stdout]     |                             ^^^^^            ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub fn mutf8_to_utf8(input: &[u8]) -> Result<Cow<'_, [u8]>> {
[INFO] [stdout]     |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/str.rs:103:23
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn as_utf8_bytes(&self) -> MResult<Cow<[u8]>> {
[INFO] [stdout]     |                          ^^^^^             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn as_utf8_bytes(&self) -> MResult<Cow<'_, [u8]>> {
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/str.rs:194:26
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub fn from_utf8(bytes: &[u8]) -> MResult<Cow<mstr>> {
[INFO] [stdout]     |                             ^^^^^             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub fn from_utf8(bytes: &[u8]) -> MResult<Cow<'_, mstr>> {
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/str.rs:246:16
[INFO] [stdout]     |
[INFO] [stdout] 246 |     pub fn to_str(&self) -> MResult<Cow<str>> {
[INFO] [stdout]     |                   ^^^^^             ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 246 |     pub fn to_str(&self) -> MResult<Cow<'_, str>> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/str.rs:250:17
[INFO] [stdout]     |
[INFO] [stdout] 250 |     pub fn to_utf8(&self) -> MResult<Cow<str>> {
[INFO] [stdout]     |                    ^^^^^             ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 250 |     pub fn to_utf8(&self) -> MResult<Cow<'_, str>> {
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling mutf8 v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `mutf8::mutf8_to_utf8`
[INFO] [stdout]  --> tests/to_mutf8.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use mutf8::mutf8_to_utf8;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]  --> src/mutf8.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn utf8_to_mutf8(input: &[u8]) -> Result<Cow<[u8]>> {
[INFO] [stdout]   |                             ^^^^^            ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]   |                             |
[INFO] [stdout]   |                             the lifetime is elided here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn utf8_to_mutf8(input: &[u8]) -> Result<Cow<'_, [u8]>> {
[INFO] [stdout]   |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/mutf8.rs:100:29
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub fn mutf8_to_utf8(input: &[u8]) -> Result<Cow<[u8]>> {
[INFO] [stdout]     |                             ^^^^^            ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub fn mutf8_to_utf8(input: &[u8]) -> Result<Cow<'_, [u8]>> {
[INFO] [stdout]     |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/str.rs:103:23
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn as_utf8_bytes(&self) -> MResult<Cow<[u8]>> {
[INFO] [stdout]     |                          ^^^^^             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn as_utf8_bytes(&self) -> MResult<Cow<'_, [u8]>> {
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/str.rs:194:26
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub fn from_utf8(bytes: &[u8]) -> MResult<Cow<mstr>> {
[INFO] [stdout]     |                             ^^^^^             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub fn from_utf8(bytes: &[u8]) -> MResult<Cow<'_, mstr>> {
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/str.rs:246:16
[INFO] [stdout]     |
[INFO] [stdout] 246 |     pub fn to_str(&self) -> MResult<Cow<str>> {
[INFO] [stdout]     |                   ^^^^^             ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 246 |     pub fn to_str(&self) -> MResult<Cow<'_, str>> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/str.rs:250:17
[INFO] [stdout]     |
[INFO] [stdout] 250 |     pub fn to_utf8(&self) -> MResult<Cow<str>> {
[INFO] [stdout]     |                    ^^^^^             ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 250 |     pub fn to_utf8(&self) -> MResult<Cow<'_, str>> {
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 13.28s
[INFO] running `Command { std: "docker" "inspect" "430e8b45914a724dd6de020da7a7d117b3c9bcc21e3c06b9d583cf6a18fe263d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "430e8b45914a724dd6de020da7a7d117b3c9bcc21e3c06b9d583cf6a18fe263d", kill_on_drop: false }`
[INFO] [stdout] 430e8b45914a724dd6de020da7a7d117b3c9bcc21e3c06b9d583cf6a18fe263d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 855f394215aaebbb93db2fb52b672fb9bddb611a78f2b41ca311dc0acf34c778
[INFO] running `Command { std: "docker" "start" "-a" "855f394215aaebbb93db2fb52b672fb9bddb611a78f2b41ca311dc0acf34c778", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]  --> src/mutf8.rs:5:29
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn utf8_to_mutf8(input: &[u8]) -> Result<Cow<[u8]>> {
[INFO] [stderr]   |                             ^^^^^            ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]   |                             |
[INFO] [stderr]   |                             the lifetime is elided here
[INFO] [stderr]   |
[INFO] [stderr]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn utf8_to_mutf8(input: &[u8]) -> Result<Cow<'_, [u8]>> {
[INFO] [stderr]   |                                                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/mutf8.rs:100:29
[INFO] [stderr]     |
[INFO] [stderr] 100 | pub fn mutf8_to_utf8(input: &[u8]) -> Result<Cow<[u8]>> {
[INFO] [stderr]     |                             ^^^^^            ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 100 | pub fn mutf8_to_utf8(input: &[u8]) -> Result<Cow<'_, [u8]>> {
[INFO] [stderr]     |                                                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/str.rs:103:23
[INFO] [stderr]     |
[INFO] [stderr] 103 |     pub fn as_utf8_bytes(&self) -> MResult<Cow<[u8]>> {
[INFO] [stderr]     |                          ^^^^^             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 103 |     pub fn as_utf8_bytes(&self) -> MResult<Cow<'_, [u8]>> {
[INFO] [stderr]     |                                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/str.rs:194:26
[INFO] [stderr]     |
[INFO] [stderr] 194 |     pub fn from_utf8(bytes: &[u8]) -> MResult<Cow<mstr>> {
[INFO] [stderr]     |                             ^^^^^             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 194 |     pub fn from_utf8(bytes: &[u8]) -> MResult<Cow<'_, mstr>> {
[INFO] [stderr]     |                                                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/str.rs:246:16
[INFO] [stderr]     |
[INFO] [stderr] 246 |     pub fn to_str(&self) -> MResult<Cow<str>> {
[INFO] [stderr]     |                   ^^^^^             ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                   |
[INFO] [stderr]     |                   the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 246 |     pub fn to_str(&self) -> MResult<Cow<'_, str>> {
[INFO] [stderr]     |                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/str.rs:250:17
[INFO] [stderr]     |
[INFO] [stderr] 250 |     pub fn to_utf8(&self) -> MResult<Cow<str>> {
[INFO] [stderr]     |                    ^^^^^             ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 250 |     pub fn to_utf8(&self) -> MResult<Cow<'_, str>> {
[INFO] [stderr]     |                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: `mutf8` (lib) generated 6 warnings (run `cargo fix --lib -p mutf8` to apply 6 suggestions)
[INFO] [stderr] warning: unused import: `mutf8::mutf8_to_utf8`
[INFO] [stderr]  --> tests/to_mutf8.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use mutf8::mutf8_to_utf8;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mutf8` (test "to_mutf8") generated 1 warning (run `cargo fix --test "to_mutf8" -p mutf8` to apply 1 suggestion)
[INFO] [stderr] warning: `mutf8` (lib test) generated 6 warnings (6 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mutf8-462f72046edfbf85)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/serde.rs (/opt/rustwide/target/debug/deps/serde-cb2e0f9f81cab33d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/to_mutf8.rs (/opt/rustwide/target/debug/deps/to_mutf8-61db380965a46c35)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test nul_test ... ok
[INFO] [stdout] test ascii_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mutf8
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "855f394215aaebbb93db2fb52b672fb9bddb611a78f2b41ca311dc0acf34c778", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "855f394215aaebbb93db2fb52b672fb9bddb611a78f2b41ca311dc0acf34c778", kill_on_drop: false }`
[INFO] [stdout] 855f394215aaebbb93db2fb52b672fb9bddb611a78f2b41ca311dc0acf34c778
