[INFO] fetching crate xsv 0.13.0...
[INFO] fixing xsv-0.13.0 against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] extracting crate xsv 0.13.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate xsv 0.13.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate xsv 0.13.0
[INFO] tweaked toml for crates.io crate xsv 0.13.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xsv 0.13.0 on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "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" "+622891a4e29178280638a6b63a8908bde2c0c854" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 45 packages to latest compatible versions
[INFO] [stderr]       Adding filetime v0.1.15 (available: v0.2.29)
[INFO] [stderr]       Adding quickcheck v0.6.2 (available: v1.1.0)
[INFO] [stderr]       Adding rand v0.4.6 (available: v0.10.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: An explicit [[test]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other test targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a test target:
[INFO] [stderr] 
[INFO] [stderr] * tests/test_search.rs
[INFO] [stderr] * tests/test_select.rs
[INFO] [stderr] * tests/test_partition.rs
[INFO] [stderr] * tests/test_stats.rs
[INFO] [stderr] * tests/test_index.rs
[INFO] [stderr] * tests/test_slice.rs
[INFO] [stderr] * tests/test_fmt.rs
[INFO] [stderr] * tests/test_split.rs
[INFO] [stderr] * tests/test_fixlengths.rs
[INFO] [stderr] * tests/workdir.rs
[INFO] [stderr] * tests/test_cat.rs
[INFO] [stderr] * tests/test_count.rs
[INFO] [stderr] * tests/test_sort.rs
[INFO] [stderr] * tests/test_table.rs
[INFO] [stderr] * tests/test_headers.rs
[INFO] [stderr] * tests/test_join.rs
[INFO] [stderr] * tests/test_frequency.rs
[INFO] [stderr] * tests/test_flatten.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a test target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autotests = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `xsv` (manifest) generated 2 warnings
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded threadpool v1.8.1
[INFO] [stderr]   Downloaded tabwriter v1.4.1
[INFO] [stderr]   Downloaded streaming-stats v0.2.3
[INFO] [stderr]   Downloaded regex v1.12.4
[INFO] [stderr]   Downloaded rdrand v0.4.0
[INFO] [stderr]   Downloaded filetime v0.1.15
[INFO] [stderr]   Downloaded num_cpus v1.17.0
[INFO] [stderr]   Downloaded rand v0.3.23
[INFO] [stderr]   Downloaded fuchsia-cprng v0.1.1
[INFO] [stderr]   Downloaded cfg-if v0.1.10
[INFO] [stderr]   Downloaded csv-index v0.1.6
[INFO] [stderr]   Downloaded rand_core v0.3.1
[INFO] [stderr]   Downloaded chan v0.1.23
[INFO] [stderr]   Downloaded quickcheck v0.6.2
[INFO] [stderr]   Downloaded redox_syscall v0.1.57
[INFO] [stderr]   Downloaded csv-core v0.1.13
[INFO] [stderr]   Downloaded rand_core v0.4.2
[INFO] [stderr]   Downloaded docopt v1.1.1
[INFO] [stderr]   Downloaded rand v0.4.6
[INFO] [stderr]   Downloaded regex-syntax v0.8.11
[INFO] [stderr]   Downloaded csv v1.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] dc2e898d3e789dd7442f3dcbb695d3b35c9d46e6d21a504506afd955ae086e34
[INFO] running `Command { std: "docker" "start" "dc2e898d3e789dd7442f3dcbb695d3b35c9d46e6d21a504506afd955ae086e34", 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" "dc2e898d3e789dd7442f3dcbb695d3b35c9d46e6d21a504506afd955ae086e34" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc2e898d3e789dd7442f3dcbb695d3b35c9d46e6d21a504506afd955ae086e34", 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=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "dc2e898d3e789dd7442f3dcbb695d3b35c9d46e6d21a504506afd955ae086e34" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: An explicit [[test]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other test targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a test target:
[INFO] [stderr] 
[INFO] [stderr] * tests/test_search.rs
[INFO] [stderr] * tests/test_select.rs
[INFO] [stderr] * tests/test_partition.rs
[INFO] [stderr] * tests/test_stats.rs
[INFO] [stderr] * tests/test_index.rs
[INFO] [stderr] * tests/test_slice.rs
[INFO] [stderr] * tests/test_fmt.rs
[INFO] [stderr] * tests/test_split.rs
[INFO] [stderr] * tests/test_fixlengths.rs
[INFO] [stderr] * tests/workdir.rs
[INFO] [stderr] * tests/test_cat.rs
[INFO] [stderr] * tests/test_count.rs
[INFO] [stderr] * tests/test_sort.rs
[INFO] [stderr] * tests/test_table.rs
[INFO] [stderr] * tests/test_headers.rs
[INFO] [stderr] * tests/test_join.rs
[INFO] [stderr] * tests/test_frequency.rs
[INFO] [stderr] * tests/test_flatten.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a test target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autotests = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `xsv` (manifest) generated 2 warnings
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]     Checking memchr v2.8.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling quote v1.0.46
[INFO] [stderr]    Compiling autocfg v1.5.1
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking regex-syntax v0.8.11
[INFO] [stderr]     Checking itoa v1.0.18
[INFO] [stderr]     Checking ryu v1.0.23
[INFO] [stderr]     Checking unicode-width v0.2.2
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking log v0.4.33
[INFO] [stderr]     Checking tabwriter v1.4.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]     Checking csv-core v0.1.13
[INFO] [stderr]    Compiling syn v2.0.118
[INFO] [stderr]     Checking streaming-stats v0.2.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking filetime v0.1.15
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking quickcheck v0.6.2
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]     Checking chan v0.1.23
[INFO] [stderr]     Checking csv v1.4.0
[INFO] [stderr]     Checking csv-index v0.1.6
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking regex v1.12.4
[INFO] [stderr]     Checking docopt v1.1.1
[INFO] [stderr]     Checking xsv v0.13.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/cmd/partition.rs:126:36
[INFO] [stdout]     |
[INFO] [stdout] 126 | type BoxedWriter = csv::Writer<Box<io::Write+'static>>;
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 126 | type BoxedWriter = csv::Writer<Box<dyn io::Write+'static>>;
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/util.rs:190:48
[INFO] [stdout]     |
[INFO] [stdout] 190 |                  -> io::Result<csv::Writer<Box<io::Write+'static>>>
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 190 |                  -> io::Result<csv::Writer<Box<dyn io::Write+'static>>>
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> tests/tests.rs:66:18
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn from_vecs(CsvVecs) -> Self;
[INFO] [stdout]    |                  ^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: CsvVecs`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2018/trait-fn-parameters.html>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` (part of `#[warn(rust_2018_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/cmd/join.rs:281:44
[INFO] [stdout]     |
[INFO] [stdout] 281 |         -> CliResult<IoState<fs::File, Box<io::Write+'static>>> {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 281 |         -> CliResult<IoState<fs::File, Box<dyn io::Write+'static>>> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/cmd/split.rs:131:36
[INFO] [stdout]     |
[INFO] [stdout] 131 |     ) -> CliResult<csv::Writer<Box<io::Write+'static>>> {
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 131 |     ) -> CliResult<csv::Writer<Box<dyn io::Write+'static>>> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/config.rs:197:48
[INFO] [stdout]     |
[INFO] [stdout] 197 |                  -> io::Result<csv::Writer<Box<io::Write+'static>>> {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 197 |                  -> io::Result<csv::Writer<Box<dyn io::Write+'static>>> {
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/config.rs:202:48
[INFO] [stdout]     |
[INFO] [stdout] 202 |                  -> io::Result<csv::Reader<Box<io::Read+'static>>> {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 202 |                  -> io::Result<csv::Reader<Box<dyn io::Read+'static>>> {
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/config.rs:263:47
[INFO] [stdout]     |
[INFO] [stdout] 263 |     pub fn io_reader(&self) -> io::Result<Box<io::Read+'static>> {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 263 |     pub fn io_reader(&self) -> io::Result<Box<dyn io::Read+'static>> {
[INFO] [stdout]     |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/config.rs:293:47
[INFO] [stdout]     |
[INFO] [stdout] 293 |     pub fn io_writer(&self) -> io::Result<Box<io::Write+'static>> {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 293 |     pub fn io_writer(&self) -> io::Result<Box<dyn io::Write+'static>> {
[INFO] [stdout]     |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> tests/workdir.rs:17:47
[INFO] [stdout]    |
[INFO] [stdout] 17 | static NEXT_ID: atomic::AtomicUsize = atomic::ATOMIC_USIZE_INIT;
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]    |
[INFO] [stdout] 17 - static NEXT_ID: atomic::AtomicUsize = atomic::ATOMIC_USIZE_INIT;
[INFO] [stdout] 17 + static NEXT_ID: atomic::AtomicUsize = atomic::AtomicUsize::new(0);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/tests.rs:104:29
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn shrink(&self) -> Box<Iterator<Item=CsvRecord>+'static> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn shrink(&self) -> Box<dyn Iterator<Item=CsvRecord>+'static> {
[INFO] [stdout]     |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/tests.rs:150:29
[INFO] [stdout]     |
[INFO] [stdout] 150 |     fn shrink(&self) -> Box<Iterator<Item=CsvData>+'static> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 150 |     fn shrink(&self) -> Box<dyn Iterator<Item=CsvData>+'static> {
[INFO] [stdout]     |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cmd/headers.rs:60:22
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let mut wtr: Box<io::Write> =
[INFO] [stdout]    |                      ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let mut wtr: Box<dyn io::Write> =
[INFO] [stdout]    |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.78s
[INFO] [stderr] crater-edition-check: all finished
[INFO] running `Command { std: "docker" "inspect" "dc2e898d3e789dd7442f3dcbb695d3b35c9d46e6d21a504506afd955ae086e34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc2e898d3e789dd7442f3dcbb695d3b35c9d46e6d21a504506afd955ae086e34", kill_on_drop: false }`
[INFO] [stdout] dc2e898d3e789dd7442f3dcbb695d3b35c9d46e6d21a504506afd955ae086e34
