[INFO] cloning repository https://github.com/letieu/hecto-editor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/letieu/hecto-editor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fletieu%2Fhecto-editor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fletieu%2Fhecto-editor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 741ab8c54810faa72ee05ad1a937f8d843544e29
[INFO] testing letieu/hecto-editor against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fletieu%2Fhecto-editor" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/letieu/hecto-editor
[INFO] finished tweaking git repo https://github.com/letieu/hecto-editor
[INFO] tweaked toml for git repo https://github.com/letieu/hecto-editor written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/letieu/hecto-editor 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] crate git repo https://github.com/letieu/hecto-editor 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e3edaa03cfc537896ebeff5731fe61184091e333811faa8bd4da1479576c673d
[INFO] running `Command { std: "docker" "start" "-a" "e3edaa03cfc537896ebeff5731fe61184091e333811faa8bd4da1479576c673d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3edaa03cfc537896ebeff5731fe61184091e333811faa8bd4da1479576c673d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3edaa03cfc537896ebeff5731fe61184091e333811faa8bd4da1479576c673d", kill_on_drop: false }`
[INFO] [stdout] e3edaa03cfc537896ebeff5731fe61184091e333811faa8bd4da1479576c673d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] c1eebb07ede339d2f4f89d13b14e0e4ef1d16a0b1a52ddbc9222abd1552d4000
[INFO] running `Command { std: "docker" "start" "-a" "c1eebb07ede339d2f4f89d13b14e0e4ef1d16a0b1a52ddbc9222abd1552d4000", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling termion v2.0.1
[INFO] [stderr]    Compiling hecto v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/editor.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |         let mut offset = &mut self.offset;
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/terminal.rs:48:24
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let Position { mut x, mut y } = position;
[INFO] [stdout]    |                        ----^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/terminal.rs:48:31
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let Position { mut x, mut y } = position;
[INFO] [stdout]    |                               ----^
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_empty` and `update_len` are never used
[INFO] [stdout]   --> src/row.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Row {
[INFO] [stdout]    | -------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn update_len(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.37s
[INFO] running `Command { std: "docker" "inspect" "c1eebb07ede339d2f4f89d13b14e0e4ef1d16a0b1a52ddbc9222abd1552d4000", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1eebb07ede339d2f4f89d13b14e0e4ef1d16a0b1a52ddbc9222abd1552d4000", kill_on_drop: false }`
[INFO] [stdout] c1eebb07ede339d2f4f89d13b14e0e4ef1d16a0b1a52ddbc9222abd1552d4000
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 0719d1e71eb2bffe944e756dfa4c7b40af3bd50292a3efe6dfb510029f4dd02b
[INFO] running `Command { std: "docker" "start" "-a" "0719d1e71eb2bffe944e756dfa4c7b40af3bd50292a3efe6dfb510029f4dd02b", kill_on_drop: false }`
[INFO] [stderr]    Compiling hecto v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/editor.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |         let mut offset = &mut self.offset;
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/terminal.rs:48:24
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let Position { mut x, mut y } = position;
[INFO] [stdout]    |                        ----^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/terminal.rs:48:31
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let Position { mut x, mut y } = position;
[INFO] [stdout]    |                               ----^
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_empty` and `update_len` are never used
[INFO] [stdout]   --> src/row.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Row {
[INFO] [stdout]    | -------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn update_len(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "0719d1e71eb2bffe944e756dfa4c7b40af3bd50292a3efe6dfb510029f4dd02b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0719d1e71eb2bffe944e756dfa4c7b40af3bd50292a3efe6dfb510029f4dd02b", kill_on_drop: false }`
[INFO] [stdout] 0719d1e71eb2bffe944e756dfa4c7b40af3bd50292a3efe6dfb510029f4dd02b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 709be6d85bb49f5266f3d372679f16971d0a0edde82369f7c74c3aa47d54e638
[INFO] running `Command { std: "docker" "start" "-a" "709be6d85bb49f5266f3d372679f16971d0a0edde82369f7c74c3aa47d54e638", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/editor.rs:242:13
[INFO] [stderr]     |
[INFO] [stderr] 242 |         let mut offset = &mut self.offset;
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/terminal.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |         let Position { mut x, mut y } = position;
[INFO] [stderr]    |                        ----^
[INFO] [stderr]    |                        |
[INFO] [stderr]    |                        help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/terminal.rs:48:31
[INFO] [stderr]    |
[INFO] [stderr] 48 |         let Position { mut x, mut y } = position;
[INFO] [stderr]    |                               ----^
[INFO] [stderr]    |                               |
[INFO] [stderr]    |                               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: methods `is_empty` and `update_len` are never used
[INFO] [stderr]   --> src/row.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl Row {
[INFO] [stderr]    | -------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 39 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 43 |     fn update_len(&mut self) {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `hecto` (bin "hecto" test) generated 4 warnings (run `cargo fix --bin "hecto" -p hecto --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/hecto-419ec75d08fddccb)
[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] running `Command { std: "docker" "inspect" "709be6d85bb49f5266f3d372679f16971d0a0edde82369f7c74c3aa47d54e638", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "709be6d85bb49f5266f3d372679f16971d0a0edde82369f7c74c3aa47d54e638", kill_on_drop: false }`
[INFO] [stdout] 709be6d85bb49f5266f3d372679f16971d0a0edde82369f7c74c3aa47d54e638
