[INFO] cloning repository https://github.com/felixingla/text-editor-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/felixingla/text-editor-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelixingla%2Ftext-editor-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelixingla%2Ftext-editor-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 241f1647859f5655a0b35ad990043975316f6373
[INFO] checking felixingla/text-editor-in-rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelixingla%2Ftext-editor-in-rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/felixingla/text-editor-in-rust on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/felixingla/text-editor-in-rust
[INFO] finished tweaking git repo https://github.com/felixingla/text-editor-in-rust
[INFO] tweaked toml for git repo https://github.com/felixingla/text-editor-in-rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/felixingla/text-editor-in-rust 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6123f27d0a34a49050fd602d45790a838208db97245bf794530eae062dd5f8b7
[INFO] running `Command { std: "docker" "start" "-a" "6123f27d0a34a49050fd602d45790a838208db97245bf794530eae062dd5f8b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6123f27d0a34a49050fd602d45790a838208db97245bf794530eae062dd5f8b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6123f27d0a34a49050fd602d45790a838208db97245bf794530eae062dd5f8b7", kill_on_drop: false }`
[INFO] [stdout] 6123f27d0a34a49050fd602d45790a838208db97245bf794530eae062dd5f8b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf96f21dcad4e11d615c3b8091e90b0bea941dacff2e3a33089d9b5186f784b4
[INFO] running `Command { std: "docker" "start" "-a" "bf96f21dcad4e11d615c3b8091e90b0bea941dacff2e3a33089d9b5186f784b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking text-editor-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `rows` is never read
[INFO] [stdout]  --> src/document.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Document {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 5 |     rows: Vec<Row>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `document` is never read
[INFO] [stdout]   --> src/editor.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Editor {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     document: Document,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `string` is never read
[INFO] [stdout]  --> src/row.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Row {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] 2 |     string: String
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rows` is never read
[INFO] [stdout]  --> src/document.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Document {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 5 |     rows: Vec<Row>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `document` is never read
[INFO] [stdout]   --> src/editor.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Editor {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     document: Document,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `string` is never read
[INFO] [stdout]  --> src/row.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Row {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] 2 |     string: String
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.56s
[INFO] running `Command { std: "docker" "inspect" "bf96f21dcad4e11d615c3b8091e90b0bea941dacff2e3a33089d9b5186f784b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf96f21dcad4e11d615c3b8091e90b0bea941dacff2e3a33089d9b5186f784b4", kill_on_drop: false }`
[INFO] [stdout] bf96f21dcad4e11d615c3b8091e90b0bea941dacff2e3a33089d9b5186f784b4
[INFO] checking felixingla/text-editor-in-rust against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelixingla%2Ftext-editor-in-rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/felixingla/text-editor-in-rust on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/felixingla/text-editor-in-rust
[INFO] finished tweaking git repo https://github.com/felixingla/text-editor-in-rust
[INFO] tweaked toml for git repo https://github.com/felixingla/text-editor-in-rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/felixingla/text-editor-in-rust 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19eeea8e66c76c77699b75c5b2b9244a64dba36840dd0826067ed19e2afdc227
[INFO] running `Command { std: "docker" "start" "-a" "19eeea8e66c76c77699b75c5b2b9244a64dba36840dd0826067ed19e2afdc227", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19eeea8e66c76c77699b75c5b2b9244a64dba36840dd0826067ed19e2afdc227", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19eeea8e66c76c77699b75c5b2b9244a64dba36840dd0826067ed19e2afdc227", kill_on_drop: false }`
[INFO] [stdout] 19eeea8e66c76c77699b75c5b2b9244a64dba36840dd0826067ed19e2afdc227
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbb9c5d08ff801bd6125a1e3229a04fa3254ff14ec0549308b89eb86ed785d7b
[INFO] running `Command { std: "docker" "start" "-a" "fbb9c5d08ff801bd6125a1e3229a04fa3254ff14ec0549308b89eb86ed785d7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking text-editor-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `rows` is never read
[INFO] [stdout]  --> src/document.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Document {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 5 |     rows: Vec<Row>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `document` is never read
[INFO] [stdout]   --> src/editor.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Editor {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     document: Document,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `string` is never read
[INFO] [stdout]  --> src/row.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Row {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] 2 |     string: String
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rows` is never read
[INFO] [stdout]  --> src/document.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Document {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 5 |     rows: Vec<Row>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `document` is never read
[INFO] [stdout]   --> src/editor.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Editor {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     document: Document,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `string` is never read
[INFO] [stdout]  --> src/row.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Row {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] 2 |     string: String
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `Command { std: "docker" "inspect" "fbb9c5d08ff801bd6125a1e3229a04fa3254ff14ec0549308b89eb86ed785d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbb9c5d08ff801bd6125a1e3229a04fa3254ff14ec0549308b89eb86ed785d7b", kill_on_drop: false }`
[INFO] [stdout] fbb9c5d08ff801bd6125a1e3229a04fa3254ff14ec0549308b89eb86ed785d7b