[INFO] fetching crate rusty-data 0.0.3...
[INFO] testing rusty-data-0.0.3 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rusty-data 0.0.3 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate rusty-data 0.0.3
[INFO] finished tweaking crates.io crate rusty-data 0.0.3
[INFO] tweaked toml for crates.io crate rusty-data 0.0.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rusty-data 0.0.3 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] [stderr]       Adding num v0.1.43 (available: v0.4.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 057c179297f8570b9d7298cbc4c45307fbb3f6d5aab9413fb837ab0761866ee9
[INFO] running `Command { std: "docker" "start" "-a" "057c179297f8570b9d7298cbc4c45307fbb3f6d5aab9413fb837ab0761866ee9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "057c179297f8570b9d7298cbc4c45307fbb3f6d5aab9413fb837ab0761866ee9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "057c179297f8570b9d7298cbc4c45307fbb3f6d5aab9413fb837ab0761866ee9", kill_on_drop: false }`
[INFO] [stdout] 057c179297f8570b9d7298cbc4c45307fbb3f6d5aab9413fb837ab0761866ee9
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6af2be1aa8dd679e0b3b4dcfd226747dd7001f86d5e495b61ac0c656c8a00783
[INFO] running `Command { std: "docker" "start" "-a" "6af2be1aa8dd679e0b3b4dcfd226747dd7001f86d5e495b61ac0c656c8a00783", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num v0.1.43
[INFO] [stderr]    Compiling rusty-data v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/loader.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let f = try!(File::open(self.file));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/loader.rs:89:28
[INFO] [stdout]    |
[INFO] [stdout] 89 |                 let line = try!(line);
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/loader.rs:102:28
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 let line = try!(line);
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/loader.rs:117:24
[INFO] [stdout]     |
[INFO] [stdout] 117 |             let line = try!(line);
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/loader.rs:42:40
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn new(has_header: bool, file: &str, delimiter: char) -> Loader {
[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] 42 |     pub fn new(has_header: bool, file: &str, delimiter: char) -> Loader<'_> {
[INFO] [stdout]    |                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/loader.rs:61:42
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn from_file_string(file_string: &str) -> Loader {
[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] 61 |     pub fn from_file_string(file_string: &str) -> Loader<'_> {
[INFO] [stdout]    |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.25s
[INFO] running `Command { std: "docker" "inspect" "6af2be1aa8dd679e0b3b4dcfd226747dd7001f86d5e495b61ac0c656c8a00783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6af2be1aa8dd679e0b3b4dcfd226747dd7001f86d5e495b61ac0c656c8a00783", kill_on_drop: false }`
[INFO] [stdout] 6af2be1aa8dd679e0b3b4dcfd226747dd7001f86d5e495b61ac0c656c8a00783
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12e5cf8b7d57fdf0f50903688d341e27c512b39ac90d7cccaefdf0f69b2c9f28
[INFO] running `Command { std: "docker" "start" "-a" "12e5cf8b7d57fdf0f50903688d341e27c512b39ac90d7cccaefdf0f69b2c9f28", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/loader.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let f = try!(File::open(self.file));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/loader.rs:89:28
[INFO] [stdout]    |
[INFO] [stdout] 89 |                 let line = try!(line);
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/loader.rs:102:28
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 let line = try!(line);
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/loader.rs:117:24
[INFO] [stdout]     |
[INFO] [stdout] 117 |             let line = try!(line);
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rusty-data v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/loader.rs:42:40
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn new(has_header: bool, file: &str, delimiter: char) -> Loader {
[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] 42 |     pub fn new(has_header: bool, file: &str, delimiter: char) -> Loader<'_> {
[INFO] [stdout]    |                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/loader.rs:61:42
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn from_file_string(file_string: &str) -> Loader {
[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] 61 |     pub fn from_file_string(file_string: &str) -> Loader<'_> {
[INFO] [stdout]    |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/loader.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let f = try!(File::open(self.file));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/loader.rs:89:28
[INFO] [stdout]    |
[INFO] [stdout] 89 |                 let line = try!(line);
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/loader.rs:102:28
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 let line = try!(line);
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/loader.rs:117:24
[INFO] [stdout]     |
[INFO] [stdout] 117 |             let line = try!(line);
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/loader.rs:42:40
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn new(has_header: bool, file: &str, delimiter: char) -> Loader {
[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] 42 |     pub fn new(has_header: bool, file: &str, delimiter: char) -> Loader<'_> {
[INFO] [stdout]    |                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/loader.rs:61:42
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn from_file_string(file_string: &str) -> Loader {
[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] 61 |     pub fn from_file_string(file_string: &str) -> Loader<'_> {
[INFO] [stdout]    |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "12e5cf8b7d57fdf0f50903688d341e27c512b39ac90d7cccaefdf0f69b2c9f28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12e5cf8b7d57fdf0f50903688d341e27c512b39ac90d7cccaefdf0f69b2c9f28", kill_on_drop: false }`
[INFO] [stdout] 12e5cf8b7d57fdf0f50903688d341e27c512b39ac90d7cccaefdf0f69b2c9f28
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8e80340c5f3aac6ea3e57bf230b04b15102a8d4f5cba79cd29f0152d12e57129
[INFO] running `Command { std: "docker" "start" "-a" "8e80340c5f3aac6ea3e57bf230b04b15102a8d4f5cba79cd29f0152d12e57129", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/loader.rs:80:17
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let f = try!(File::open(self.file));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/loader.rs:89:28
[INFO] [stderr]    |
[INFO] [stderr] 89 |                 let line = try!(line);
[INFO] [stderr]    |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/loader.rs:102:28
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 let line = try!(line);
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/loader.rs:117:24
[INFO] [stderr]     |
[INFO] [stderr] 117 |             let line = try!(line);
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/loader.rs:42:40
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn new(has_header: bool, file: &str, delimiter: char) -> Loader {
[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] 42 |     pub fn new(has_header: bool, file: &str, delimiter: char) -> Loader<'_> {
[INFO] [stderr]    |                                                                        ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/loader.rs:61:42
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn from_file_string(file_string: &str) -> Loader {
[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] 61 |     pub fn from_file_string(file_string: &str) -> Loader<'_> {
[INFO] [stderr]    |                                                         ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `rusty-data` (lib) generated 6 warnings (run `cargo fix --lib -p rusty-data` to apply 2 suggestions)
[INFO] [stderr] warning: `rusty-data` (lib test) generated 6 warnings (6 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rusty_data-b3e3dee78ec16dbe)
[INFO] [stderr]    Doc-tests rusty_data
[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] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/loader.rs - loader::load_file (line 209) - compile ... ok
[INFO] [stdout] test src/datatable.rs - datatable::DataColumn::numeric_category_data (line 181) ... ok
[INFO] [stdout] test src/datatable.rs - datatable::DataColumn::update_categories (line 146) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.40s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8e80340c5f3aac6ea3e57bf230b04b15102a8d4f5cba79cd29f0152d12e57129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e80340c5f3aac6ea3e57bf230b04b15102a8d4f5cba79cd29f0152d12e57129", kill_on_drop: false }`
[INFO] [stdout] 8e80340c5f3aac6ea3e57bf230b04b15102a8d4f5cba79cd29f0152d12e57129
