[INFO] cloning repository https://github.com/huonw/rust-resource-management
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/huonw/rust-resource-management" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuonw%2Frust-resource-management", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuonw%2Frust-resource-management'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62764adb1de5b21832a618046d237646b9ab8012
[INFO] testing huonw/rust-resource-management against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuonw%2Frust-resource-management" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/huonw/rust-resource-management
[INFO] finished tweaking git repo https://github.com/huonw/rust-resource-management
[INFO] tweaked toml for git repo https://github.com/huonw/rust-resource-management written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/huonw/rust-resource-management on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/huonw/rust-resource-management already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 26a2363e2b1373e1deebf17df85fb5a8af5e601b064b4603d9a4a16e19d5a0cb
[INFO] running `Command { std: "docker" "start" "-a" "26a2363e2b1373e1deebf17df85fb5a8af5e601b064b4603d9a4a16e19d5a0cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26a2363e2b1373e1deebf17df85fb5a8af5e601b064b4603d9a4a16e19d5a0cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26a2363e2b1373e1deebf17df85fb5a8af5e601b064b4603d9a4a16e19d5a0cb", kill_on_drop: false }`
[INFO] [stdout] 26a2363e2b1373e1deebf17df85fb5a8af5e601b064b4603d9a4a16e19d5a0cb
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e8794943b4f50defed4375f300b67cefeca40ed77381863481c329c4a65a65a
[INFO] running `Command { std: "docker" "start" "-a" "3e8794943b4f50defed4375f300b67cefeca40ed77381863481c329c4a65a65a", kill_on_drop: false }`
[INFO] [stderr]    Compiling tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `headings_line`
[INFO] [stdout]   --> src/bin/borrowing.rs:44:31
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn split_headings_example_csv(headings_line: String) -> Vec<String> {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_headings_line`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `heading`
[INFO] [stdout]   --> src/bin/borrowing.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     for heading in headings_line.split(',') {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heading`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/bin/summarise-csv.rs:169:23
[INFO] [stdout]     |
[INFO] [stdout] 169 |     fn add(&mut self, value: f64) {
[INFO] [stdout]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]    --> src/bin/summarise-csv.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |         let row = raw_row.unwrap();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_name`
[INFO] [stdout]   --> src/bin/resource-management.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let file_name = "data/example.csv";
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "3e8794943b4f50defed4375f300b67cefeca40ed77381863481c329c4a65a65a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e8794943b4f50defed4375f300b67cefeca40ed77381863481c329c4a65a65a", kill_on_drop: false }`
[INFO] [stdout] 3e8794943b4f50defed4375f300b67cefeca40ed77381863481c329c4a65a65a
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54a7db5a2d508d58a53eb58952861f5e1bec81ee75d34ebeed6a7dabcd6f4b37
[INFO] running `Command { std: "docker" "start" "-a" "54a7db5a2d508d58a53eb58952861f5e1bec81ee75d34ebeed6a7dabcd6f4b37", kill_on_drop: false }`
[INFO] [stderr]    Compiling tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `headings_line`
[INFO] [stdout]   --> src/bin/borrowing.rs:44:31
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn split_headings_example_csv(headings_line: String) -> Vec<String> {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_headings_line`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `heading`
[INFO] [stdout]   --> src/bin/borrowing.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     for heading in headings_line.split(',') {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heading`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/bin/summarise-csv.rs:169:23
[INFO] [stdout]     |
[INFO] [stdout] 169 |     fn add(&mut self, value: f64) {
[INFO] [stdout]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]    --> src/bin/summarise-csv.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |         let row = raw_row.unwrap();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `two_by_three`
[INFO] [stdout]    --> src/bin/summarise-csv.rs:252:9
[INFO] [stdout]     |
[INFO] [stdout] 252 |     let two_by_three: &[u8] = b"2019,61\n2020,62\n2021,9999";
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_two_by_three`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> examples/summarise-csv-4.rs:193:53
[INFO] [stdout]     |
[INFO] [stdout] 193 | fn summarise_columns(num_columns: usize, file: &mut (impl std::io::BufRead)) -> Vec<Summary> {
[INFO] [stdout]     |                                                     ^                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 193 - fn summarise_columns(num_columns: usize, file: &mut (impl std::io::BufRead)) -> Vec<Summary> {
[INFO] [stdout] 193 + fn summarise_columns(num_columns: usize, file: &mut impl std::io::BufRead) -> Vec<Summary> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> examples/summarise-csv-5.rs:197:53
[INFO] [stdout]     |
[INFO] [stdout] 197 | fn summarise_columns(num_columns: usize, file: &mut (impl std::io::BufRead)) -> Vec<Summary> {
[INFO] [stdout]     |                                                     ^                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 197 - fn summarise_columns(num_columns: usize, file: &mut (impl std::io::BufRead)) -> Vec<Summary> {
[INFO] [stdout] 197 + fn summarise_columns(num_columns: usize, file: &mut impl std::io::BufRead) -> Vec<Summary> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> examples/summarise-csv-6.rs:197:53
[INFO] [stdout]     |
[INFO] [stdout] 197 | fn summarise_columns(num_columns: usize, file: &mut (impl std::io::BufRead)) -> Vec<Summary> {
[INFO] [stdout]     |                                                     ^                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 197 - fn summarise_columns(num_columns: usize, file: &mut (impl std::io::BufRead)) -> Vec<Summary> {
[INFO] [stdout] 197 + fn summarise_columns(num_columns: usize, file: &mut impl std::io::BufRead) -> Vec<Summary> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_name`
[INFO] [stdout]   --> src/bin/resource-management.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let file_name = "data/example.csv";
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.52s
[INFO] running `Command { std: "docker" "inspect" "54a7db5a2d508d58a53eb58952861f5e1bec81ee75d34ebeed6a7dabcd6f4b37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54a7db5a2d508d58a53eb58952861f5e1bec81ee75d34ebeed6a7dabcd6f4b37", kill_on_drop: false }`
[INFO] [stdout] 54a7db5a2d508d58a53eb58952861f5e1bec81ee75d34ebeed6a7dabcd6f4b37
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 96c95cfd0765693da006dfbf2eb9908a161494448b147bd617e71e5b1095b975
[INFO] running `Command { std: "docker" "start" "-a" "96c95cfd0765693da006dfbf2eb9908a161494448b147bd617e71e5b1095b975", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> examples/summarise-csv-5.rs:197:53
[INFO] [stderr]     |
[INFO] [stderr] 197 | fn summarise_columns(num_columns: usize, file: &mut (impl std::io::BufRead)) -> Vec<Summary> {
[INFO] [stderr]     |                                                     ^                     ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 197 - fn summarise_columns(num_columns: usize, file: &mut (impl std::io::BufRead)) -> Vec<Summary> {
[INFO] [stderr] 197 + fn summarise_columns(num_columns: usize, file: &mut impl std::io::BufRead) -> Vec<Summary> {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_name`
[INFO] [stderr]   --> src/bin/resource-management.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let file_name = "data/example.csv";
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_name`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> examples/summarise-csv-6.rs:197:53
[INFO] [stderr]     |
[INFO] [stderr] 197 | fn summarise_columns(num_columns: usize, file: &mut (impl std::io::BufRead)) -> Vec<Summary> {
[INFO] [stderr]     |                                                     ^                     ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 197 - fn summarise_columns(num_columns: usize, file: &mut (impl std::io::BufRead)) -> Vec<Summary> {
[INFO] [stderr] 197 + fn summarise_columns(num_columns: usize, file: &mut impl std::io::BufRead) -> Vec<Summary> {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `headings_line`
[INFO] [stderr]   --> src/bin/borrowing.rs:44:31
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn split_headings_example_csv(headings_line: String) -> Vec<String> {
[INFO] [stderr]    |                               ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_headings_line`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `heading`
[INFO] [stderr]   --> src/bin/borrowing.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     for heading in headings_line.split(',') {
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heading`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> examples/summarise-csv-4.rs:193:53
[INFO] [stderr]     |
[INFO] [stderr] 193 | fn summarise_columns(num_columns: usize, file: &mut (impl std::io::BufRead)) -> Vec<Summary> {
[INFO] [stderr]     |                                                     ^                     ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 193 - fn summarise_columns(num_columns: usize, file: &mut (impl std::io::BufRead)) -> Vec<Summary> {
[INFO] [stderr] 193 + fn summarise_columns(num_columns: usize, file: &mut impl std::io::BufRead) -> Vec<Summary> {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/bin/summarise-csv.rs:169:23
[INFO] [stderr]     |
[INFO] [stderr] 169 |     fn add(&mut self, value: f64) {
[INFO] [stderr]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]    --> src/bin/summarise-csv.rs:200:13
[INFO] [stderr]     |
[INFO] [stderr] 200 |         let row = raw_row.unwrap();
[INFO] [stderr]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `two_by_three`
[INFO] [stderr]    --> src/bin/summarise-csv.rs:252:9
[INFO] [stderr]     |
[INFO] [stderr] 252 |     let two_by_three: &[u8] = b"2019,61\n2020,62\n2021,9999";
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_two_by_three`
[INFO] [stderr] 
[INFO] [stderr] warning: `tutorial` (example "summarise-csv-5") generated 1 warning (run `cargo fix --example "summarise-csv-5" -p tutorial` to apply 1 suggestion)
[INFO] [stderr] warning: `tutorial` (bin "resource-management" test) generated 1 warning (run `cargo fix --bin "resource-management" -p tutorial --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `tutorial` (example "summarise-csv-6") generated 1 warning (run `cargo fix --example "summarise-csv-6" -p tutorial` to apply 1 suggestion)
[INFO] [stderr] warning: `tutorial` (bin "borrowing" test) generated 2 warnings (run `cargo fix --bin "borrowing" -p tutorial --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `tutorial` (example "summarise-csv-4") generated 1 warning (run `cargo fix --example "summarise-csv-4" -p tutorial` to apply 1 suggestion)
[INFO] [stderr] warning: `tutorial` (bin "summarise-csv" test) generated 3 warnings (run `cargo fix --bin "summarise-csv" -p tutorial --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/bin/borrowing.rs (/opt/rustwide/target/debug/deps/borrowing-d22edfd35d8cc0d5)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_split_headings_loop ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test_split_headings_loop stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test_split_headings_loop' (25) panicked at src/bin/borrowing.rs:91:5:
[INFO] [stdout] not implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5d1f3e81eb22 - std::backtrace_rs::backtrace::libunwind::trace::h16affffe904e891e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5d1f3e81eb22 - std::backtrace_rs::backtrace::trace_unsynchronized::h5c14b13373ed4150
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5d1f3e81eb22 - std::sys::backtrace::_print_fmt::hcbb507f162c816cc
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5d1f3e81eb22 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h8be9aa933f14675f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5d1f3e82e95f - core::fmt::rt::Argument::fmt::h30ed739d33467c3a
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5d1f3e82e95f - core::fmt::write::hfd0efbb002ac7eea
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x5d1f3e7ec5f3 - std::io::default_write_fmt::hd6d24501f2d7f8d3
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5d1f3e7ec5f3 - std::io::Write::write_fmt::h79eca2f72fc24111
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5d1f3e7f8392 - std::sys::backtrace::BacktraceLock::print::hf2554f6030d393f7
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5d1f3e7fce6f - std::panicking::default_hook::{{closure}}::h8873121c56335b01
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x5d1f3e7fcd01 - std::panicking::default_hook::hbafefc2d196267a2
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x5d1f3e7bfece - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha834d5846f91b30b
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x5d1f3e7bfece - test::test_main_with_exit_callback::{{closure}}::h63c167737eecb025
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5d1f3e7fd47f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbf9b0f7a281291fd
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x5d1f3e7fd47f - std::panicking::panic_with_hook::h9f5b09d5adc1a745
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x5d1f3e7fd2a6 - std::panicking::panic_handler::{{closure}}::h08111e483bdf6a89
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:700:13
[INFO] [stdout]   16:     0x5d1f3e7f84c9 - std::sys::backtrace::__rust_end_short_backtrace::h1b86e3414ecbbe8d
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5d1f3e7e0dbd - __rustc[b292c645e8102103]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x5d1f3e8360a0 - core::panicking::panic_fmt::h31cc490ecc8cc1fa
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5d1f3e83607c - core::panicking::panic::h5cbcc2ceb0950681
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:150:5
[INFO] [stdout]   20:     0x5d1f3e79f6ca - borrowing::test_split_headings_loop::h52dc9c38fcaccf76
[INFO] [stdout]                                at /opt/rustwide/workdir/src/bin/borrowing.rs:91:5
[INFO] [stdout]   21:     0x5d1f3e79f6e7 - borrowing::test_split_headings_loop::{{closure}}::hebace29f478b6e7b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/bin/borrowing.rs:75:30
[INFO] [stdout]   22:     0x5d1f3e79ea46 - core::ops::function::FnOnce::call_once::h10d4502a4ab77a4a
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5d1f3e7bfccb - core::ops::function::FnOnce::call_once::h2b2de5fdd23aab3e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5d1f3e7bfccb - test::__rust_begin_short_backtrace::he551dd004770be01
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:663:18
[INFO] [stdout]   25:     0x5d1f3e7d3d2d - test::run_test_in_process::{{closure}}::h5f0b44080a35ed87
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:74
[INFO] [stdout]   26:     0x5d1f3e7d3d2d - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4dbf65d14893ecf5
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   27:     0x5d1f3e7d3d2d - std::panicking::catch_unwind::do_call::hc37c563b8a006285
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40
[INFO] [stdout]   28:     0x5d1f3e7d3d2d - std::panicking::catch_unwind::h616b6e2e7a27f612
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19
[INFO] [stdout]   29:     0x5d1f3e7d3d2d - std::panic::catch_unwind::h1e788dd57758e6d8
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x5d1f3e7d3d2d - test::run_test_in_process::hf073c2764f29f8ad
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:27
[INFO] [stdout]   31:     0x5d1f3e7d3d2d - test::run_test::{{closure}}::h3dc46b7a0c340fa6
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:607:43
[INFO] [stdout]   32:     0x5d1f3e7ad274 - test::run_test::{{closure}}::h6a4da3c57ef4505f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:637:41
[INFO] [stdout]   33:     0x5d1f3e7ad274 - std::sys::backtrace::__rust_begin_short_backtrace::hfd8e44bc311a5d57
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   34:     0x5d1f3e7b0aca - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h57c4ddec344fe24c
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   35:     0x5d1f3e7b0aca - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd7cbe09591f06dfb
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   36:     0x5d1f3e7b0aca - std::panicking::catch_unwind::do_call::hdcd076e8e993dfbc
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40
[INFO] [stdout]   37:     0x5d1f3e7b0aca - std::panicking::catch_unwind::h8f9f675f3756eab1
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19
[INFO] [stdout]   38:     0x5d1f3e7b0aca - std::panic::catch_unwind::he8f74a93abeceb9b
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x5d1f3e7b0aca - std::thread::Builder::spawn_unchecked_::{{closure}}::he43db13a2caa41d5
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   40:     0x5d1f3e7b0aca - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8f3531a7e0d83514
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5d1f3e7f38cf - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6ff05134d80ef20e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   42:     0x5d1f3e7f38cf - std::sys::thread::unix::Thread::new::thread_start::h9a4a41a076a486e0
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   43:     0x7d5e7c09caa4 - <unknown>
[INFO] [stdout]   44:     0x7d5e7c129a64 - clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test_split_headings_loop
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin borrowing`
[INFO] running `Command { std: "docker" "inspect" "96c95cfd0765693da006dfbf2eb9908a161494448b147bd617e71e5b1095b975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96c95cfd0765693da006dfbf2eb9908a161494448b147bd617e71e5b1095b975", kill_on_drop: false }`
[INFO] [stdout] 96c95cfd0765693da006dfbf2eb9908a161494448b147bd617e71e5b1095b975
