[INFO] fetching crate sample-arrow2 0.17.2...
[INFO] building sample-arrow2-0.17.2 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate sample-arrow2 0.17.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate sample-arrow2 0.17.2
[INFO] finished tweaking crates.io crate sample-arrow2 0.17.2
[INFO] tweaked toml for crates.io crate sample-arrow2 0.17.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sample-arrow2 0.17.2 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 58 packages to latest compatible versions
[INFO] [stderr]       Adding arrow2 v0.17.4 (available: v0.18.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quickcheck v1.0.3
[INFO] [stderr]   Downloaded casey v0.4.2
[INFO] [stderr]   Downloaded sample-test-macros v0.2.1
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[INFO] [stderr]   Downloaded ethnum v1.5.2
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[INFO] [stderr]   Downloaded rustc_version v0.4.1
[INFO] [stderr]   Downloaded semver v1.0.27
[INFO] [stderr]   Downloaded rand_regex v0.15.1
[INFO] [stderr]   Downloaded sample-test v0.2.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.29
[INFO] [stderr]   Downloaded arrow2 v0.17.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b91c0a7a61cbedb6bd9501184a4f89313aae70ed7bffde127ba7470cacaa590d
[INFO] running `Command { std: "docker" "start" "-a" "b91c0a7a61cbedb6bd9501184a4f89313aae70ed7bffde127ba7470cacaa590d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b91c0a7a61cbedb6bd9501184a4f89313aae70ed7bffde127ba7470cacaa590d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b91c0a7a61cbedb6bd9501184a4f89313aae70ed7bffde127ba7470cacaa590d", kill_on_drop: false }`
[INFO] [stdout] b91c0a7a61cbedb6bd9501184a4f89313aae70ed7bffde127ba7470cacaa590d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b415f5aa3fd6fb4bea0c7f13cdda4dbf2d27ec8ac656f9c9d7a6b6153346af2
[INFO] running `Command { std: "docker" "start" "-a" "2b415f5aa3fd6fb4bea0c7f13cdda4dbf2d27ec8ac656f9c9d7a6b6153346af2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling simdutf8 v0.1.5
[INFO] [stderr]    Compiling ethnum v1.5.2
[INFO] [stderr]    Compiling dyn-clone v1.0.20
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling foreign_vec v0.1.0
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling hash_hasher v2.0.4
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling arrow2 v0.17.4
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling bytemuck_derive v1.10.1
[INFO] [stderr]    Compiling casey v0.4.2
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rand_regex v0.15.1
[INFO] [stderr]    Compiling bytemuck v1.23.2
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling quickcheck v1.0.3
[INFO] [stderr]    Compiling sample-std v0.2.1
[INFO] [stderr]    Compiling sample-arrow2 v0.17.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `StructDataTypeSampler` is never constructed
[INFO] [stdout]   --> src/datatypes.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct StructDataTypeSampler<S, F> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (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/lib.rs:41:15
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn shrink(&self, _: Self::Output) -> Shrunk<Self::Output> {
[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] 41 |     fn shrink(&self, _: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:129:15
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn shrink(&self, array: Self::Output) -> Shrunk<Self::Output> {
[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] 129 |     fn shrink(&self, array: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/primitive.rs:180:15
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn shrink(&self, v: Self::Output) -> Shrunk<Self::Output> {
[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] 180 |     fn shrink(&self, v: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/primitive.rs:202:15
[INFO] [stdout]     |
[INFO] [stdout] 202 |     fn shrink(&self, v: Self::Output) -> Shrunk<Self::Output> {
[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] 202 |     fn shrink(&self, v: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/primitive.rs:260:15
[INFO] [stdout]     |
[INFO] [stdout] 260 |     fn shrink(&self, v: Self::Output) -> Shrunk<Self::Output> {
[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] 260 |     fn shrink(&self, v: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/primitive.rs:291:15
[INFO] [stdout]     |
[INFO] [stdout] 291 |     fn shrink(&self, v: Self::Output) -> Shrunk<Self::Output> {
[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] 291 |     fn shrink(&self, v: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.67s
[INFO] running `Command { std: "docker" "inspect" "2b415f5aa3fd6fb4bea0c7f13cdda4dbf2d27ec8ac656f9c9d7a6b6153346af2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b415f5aa3fd6fb4bea0c7f13cdda4dbf2d27ec8ac656f9c9d7a6b6153346af2", kill_on_drop: false }`
[INFO] [stdout] 2b415f5aa3fd6fb4bea0c7f13cdda4dbf2d27ec8ac656f9c9d7a6b6153346af2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4b7a2f2540f6e1394dcce4c016f54b1a07253e940f43348bbdbf227004202d4
[INFO] running `Command { std: "docker" "start" "-a" "a4b7a2f2540f6e1394dcce4c016f54b1a07253e940f43348bbdbf227004202d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stdout] warning: struct `StructDataTypeSampler` is never constructed
[INFO] [stdout]   --> src/datatypes.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct StructDataTypeSampler<S, F> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (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/lib.rs:41:15
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn shrink(&self, _: Self::Output) -> Shrunk<Self::Output> {
[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] 41 |     fn shrink(&self, _: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:129:15
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn shrink(&self, array: Self::Output) -> Shrunk<Self::Output> {
[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] 129 |     fn shrink(&self, array: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/primitive.rs:180:15
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn shrink(&self, v: Self::Output) -> Shrunk<Self::Output> {
[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] 180 |     fn shrink(&self, v: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/primitive.rs:202:15
[INFO] [stdout]     |
[INFO] [stdout] 202 |     fn shrink(&self, v: Self::Output) -> Shrunk<Self::Output> {
[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] 202 |     fn shrink(&self, v: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/primitive.rs:260:15
[INFO] [stdout]     |
[INFO] [stdout] 260 |     fn shrink(&self, v: Self::Output) -> Shrunk<Self::Output> {
[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] 260 |     fn shrink(&self, v: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/primitive.rs:291:15
[INFO] [stdout]     |
[INFO] [stdout] 291 |     fn shrink(&self, v: Self::Output) -> Shrunk<Self::Output> {
[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] 291 |     fn shrink(&self, v: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling sample-test-macros v0.2.1
[INFO] [stderr]    Compiling sample-test v0.2.1
[INFO] [stderr]    Compiling sample-arrow2 v0.17.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `StructDataTypeSampler` is never constructed
[INFO] [stdout]   --> src/datatypes.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct StructDataTypeSampler<S, F> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (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/lib.rs:41:15
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn shrink(&self, _: Self::Output) -> Shrunk<Self::Output> {
[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] 41 |     fn shrink(&self, _: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:129:15
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn shrink(&self, array: Self::Output) -> Shrunk<Self::Output> {
[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] 129 |     fn shrink(&self, array: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/primitive.rs:180:15
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn shrink(&self, v: Self::Output) -> Shrunk<Self::Output> {
[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] 180 |     fn shrink(&self, v: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/primitive.rs:202:15
[INFO] [stdout]     |
[INFO] [stdout] 202 |     fn shrink(&self, v: Self::Output) -> Shrunk<Self::Output> {
[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] 202 |     fn shrink(&self, v: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/primitive.rs:260:15
[INFO] [stdout]     |
[INFO] [stdout] 260 |     fn shrink(&self, v: Self::Output) -> Shrunk<Self::Output> {
[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] 260 |     fn shrink(&self, v: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/primitive.rs:291:15
[INFO] [stdout]     |
[INFO] [stdout] 291 |     fn shrink(&self, v: Self::Output) -> Shrunk<Self::Output> {
[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] 291 |     fn shrink(&self, v: Self::Output) -> Shrunk<'_, Self::Output> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 9.87s
[INFO] running `Command { std: "docker" "inspect" "a4b7a2f2540f6e1394dcce4c016f54b1a07253e940f43348bbdbf227004202d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4b7a2f2540f6e1394dcce4c016f54b1a07253e940f43348bbdbf227004202d4", kill_on_drop: false }`
[INFO] [stdout] a4b7a2f2540f6e1394dcce4c016f54b1a07253e940f43348bbdbf227004202d4
