[INFO] cloning repository https://github.com/Jordan-Rowland/csv-writer-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jordan-Rowland/csv-writer-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJordan-Rowland%2Fcsv-writer-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJordan-Rowland%2Fcsv-writer-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f21ae3d81f538fa56a0c99892cda0f32fd844aee
[INFO] checking Jordan-Rowland/csv-writer-rust against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJordan-Rowland%2Fcsv-writer-rust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jordan-Rowland/csv-writer-rust on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jordan-Rowland/csv-writer-rust
[INFO] finished tweaking git repo https://github.com/Jordan-Rowland/csv-writer-rust
[INFO] tweaked toml for git repo https://github.com/Jordan-Rowland/csv-writer-rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Jordan-Rowland/csv-writer-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c362506a88b1cbc2c17f0be8e8b7048039b83613bdc6e7cf76d9ee9b7d7f71d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2c362506a88b1cbc2c17f0be8e8b7048039b83613bdc6e7cf76d9ee9b7d7f71d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c362506a88b1cbc2c17f0be8e8b7048039b83613bdc6e7cf76d9ee9b7d7f71d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c362506a88b1cbc2c17f0be8e8b7048039b83613bdc6e7cf76d9ee9b7d7f71d", kill_on_drop: false }`
[INFO] [stdout] 2c362506a88b1cbc2c17f0be8e8b7048039b83613bdc6e7cf76d9ee9b7d7f71d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8921b53c85af30b385c93adb4d6b3ce120c9707d4877947a73f43e2bc0a78b4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c8921b53c85af30b385c93adb4d6b3ce120c9707d4877947a73f43e2bc0a78b4", kill_on_drop: false }`
[INFO] [stderr]     Checking reader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `dc`
[INFO] [stdout]   --> src/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let dc = d.get_column("email");
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_dc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `New`
[INFO] [stdout]   --> src/csv_writer.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     New(String),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_filename`
[INFO] [stdout]   --> src/csv_writer.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn get_filename(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `edit_row`
[INFO] [stdout]    --> src/csv_writer.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 115 |     pub fn edit_row(&mut self, index: usize, row: Row) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `drop_row`
[INFO] [stdout]    --> src/csv_writer.rs:119:12
[INFO] [stdout]     |
[INFO] [stdout] 119 |     pub fn drop_row(&mut self, index: usize) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_filename`
[INFO] [stdout]    --> src/csv_writer.rs:124:12
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn set_filename(&mut self, new_filename: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `calc_rows_len`
[INFO] [stdout]    --> src/csv_writer.rs:128:12
[INFO] [stdout]     |
[INFO] [stdout] 128 |     pub fn calc_rows_len(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open_file`
[INFO] [stdout]    --> src/csv_writer.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub fn open_file(filename: &str) -> std::io::Result<Self> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dc`
[INFO] [stdout]   --> src/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let dc = d.get_column("email");
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_dc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `New`
[INFO] [stdout]   --> src/csv_writer.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     New(String),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_filename`
[INFO] [stdout]   --> src/csv_writer.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn get_filename(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `edit_row`
[INFO] [stdout]    --> src/csv_writer.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 115 |     pub fn edit_row(&mut self, index: usize, row: Row) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `drop_row`
[INFO] [stdout]    --> src/csv_writer.rs:119:12
[INFO] [stdout]     |
[INFO] [stdout] 119 |     pub fn drop_row(&mut self, index: usize) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_filename`
[INFO] [stdout]    --> src/csv_writer.rs:124:12
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn set_filename(&mut self, new_filename: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `calc_rows_len`
[INFO] [stdout]    --> src/csv_writer.rs:128:12
[INFO] [stdout]     |
[INFO] [stdout] 128 |     pub fn calc_rows_len(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open_file`
[INFO] [stdout]    --> src/csv_writer.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub fn open_file(filename: &str) -> std::io::Result<Self> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "c8921b53c85af30b385c93adb4d6b3ce120c9707d4877947a73f43e2bc0a78b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8921b53c85af30b385c93adb4d6b3ce120c9707d4877947a73f43e2bc0a78b4", kill_on_drop: false }`
[INFO] [stdout] c8921b53c85af30b385c93adb4d6b3ce120c9707d4877947a73f43e2bc0a78b4