[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 master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f 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-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jordan-Rowland/csv-writer-rust on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "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-0/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 82837375d1e50074c12b2b8fddb7cf85e46d9633e7bc61e6958e4e0abca87645
[INFO] running `Command { std: "docker" "start" "-a" "82837375d1e50074c12b2b8fddb7cf85e46d9633e7bc61e6958e4e0abca87645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82837375d1e50074c12b2b8fddb7cf85e46d9633e7bc61e6958e4e0abca87645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82837375d1e50074c12b2b8fddb7cf85e46d9633e7bc61e6958e4e0abca87645", kill_on_drop: false }`
[INFO] [stdout] 82837375d1e50074c12b2b8fddb7cf85e46d9633e7bc61e6958e4e0abca87645
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e545602dfef2e86d3a1ec2b1ec0dbf805c7a422626c49778825d0c703b5d989
[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" "8e545602dfef2e86d3a1ec2b1ec0dbf805c7a422626c49778825d0c703b5d989", 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: 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: 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] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "8e545602dfef2e86d3a1ec2b1ec0dbf805c7a422626c49778825d0c703b5d989", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e545602dfef2e86d3a1ec2b1ec0dbf805c7a422626c49778825d0c703b5d989", kill_on_drop: false }`
[INFO] [stdout] 8e545602dfef2e86d3a1ec2b1ec0dbf805c7a422626c49778825d0c703b5d989