[INFO] fetching crate mutf8 0.5.0...
[INFO] testing mutf8-0.5.0 against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065-1
[INFO] extracting crate mutf8 0.5.0 into /workspace/builds/worker-6-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-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mutf8 0.5.0 on toolchain 0abe69e6c16114311cc2700e972492e64d69c28f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa9adb82d7e993b137d6ad062456a6095a8cc69a875395227c68a14f50e8f972
[INFO] running `Command { std: "docker" "start" "-a" "fa9adb82d7e993b137d6ad062456a6095a8cc69a875395227c68a14f50e8f972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa9adb82d7e993b137d6ad062456a6095a8cc69a875395227c68a14f50e8f972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa9adb82d7e993b137d6ad062456a6095a8cc69a875395227c68a14f50e8f972", kill_on_drop: false }`
[INFO] [stdout] fa9adb82d7e993b137d6ad062456a6095a8cc69a875395227c68a14f50e8f972
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ff0c96593593801850fca17f302e6761c059ca8f86e15d9601a9308fc1f379c
[INFO] running `Command { std: "docker" "start" "-a" "9ff0c96593593801850fca17f302e6761c059ca8f86e15d9601a9308fc1f379c", 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 0.24s
[INFO] running `Command { std: "docker" "inspect" "9ff0c96593593801850fca17f302e6761c059ca8f86e15d9601a9308fc1f379c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ff0c96593593801850fca17f302e6761c059ca8f86e15d9601a9308fc1f379c", kill_on_drop: false }`
[INFO] [stdout] 9ff0c96593593801850fca17f302e6761c059ca8f86e15d9601a9308fc1f379c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64899c5df629cedd3ceca02fe061b0039d9a7b1495490b714107046e299bc525
[INFO] running `Command { std: "docker" "start" "-a" "64899c5df629cedd3ceca02fe061b0039d9a7b1495490b714107046e299bc525", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[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] [stderr]    Compiling serde_json v1.0.149
[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 v2.0.117
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[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 6.25s
[INFO] running `Command { std: "docker" "inspect" "64899c5df629cedd3ceca02fe061b0039d9a7b1495490b714107046e299bc525", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64899c5df629cedd3ceca02fe061b0039d9a7b1495490b714107046e299bc525", kill_on_drop: false }`
[INFO] [stdout] 64899c5df629cedd3ceca02fe061b0039d9a7b1495490b714107046e299bc525
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e0fd5ab69f0606331ad64af133283bdd7bd5abe8705a48fee01b72811257859f
[INFO] running `Command { std: "docker" "start" "-a" "e0fd5ab69f0606331ad64af133283bdd7bd5abe8705a48fee01b72811257859f", 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` (lib test) generated 6 warnings (6 duplicates)
[INFO] [stderr] warning: `mutf8` (test "to_mutf8") generated 1 warning (run `cargo fix --test "to_mutf8" -p mutf8` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mutf8-9c9fddaedd8a1469)
[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-d78b0cdeff67872f)
[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_mutf8-683bd295a0878f9d)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test ascii_test ... ok
[INFO] [stdout] test nul_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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" "e0fd5ab69f0606331ad64af133283bdd7bd5abe8705a48fee01b72811257859f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0fd5ab69f0606331ad64af133283bdd7bd5abe8705a48fee01b72811257859f", kill_on_drop: false }`
[INFO] [stdout] e0fd5ab69f0606331ad64af133283bdd7bd5abe8705a48fee01b72811257859f
