[INFO] fetching crate thermal_printer 0.1.1... [INFO] testing thermal_printer-0.1.1 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate thermal_printer 0.1.1 into /workspace/builds/worker-4-tc2/source [INFO] started tweaking crates.io crate thermal_printer 0.1.1 [INFO] finished tweaking crates.io crate thermal_printer 0.1.1 [INFO] tweaked toml for crates.io crate thermal_printer 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate thermal_printer 0.1.1 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 12 packages to latest compatible versions [INFO] [stderr] Adding embedded-hal v0.2.7 (available: v1.0.0) [INFO] [stderr] Adding nb v0.1.3 (available: v1.1.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 713ed6980cf48ab639f74fe477e6fd1785d13826411d8b3744263f06ff6f8ded [INFO] running `Command { std: "docker" "start" "-a" "713ed6980cf48ab639f74fe477e6fd1785d13826411d8b3744263f06ff6f8ded", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "713ed6980cf48ab639f74fe477e6fd1785d13826411d8b3744263f06ff6f8ded", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "713ed6980cf48ab639f74fe477e6fd1785d13826411d8b3744263f06ff6f8ded", kill_on_drop: false }` [INFO] [stdout] 713ed6980cf48ab639f74fe477e6fd1785d13826411d8b3744263f06ff6f8ded [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d394b722514dd2ed6906e726e1d0b99c18be28c8ca992b55f0e3819107b5b325 [INFO] running `Command { std: "docker" "start" "-a" "d394b722514dd2ed6906e726e1d0b99c18be28c8ca992b55f0e3819107b5b325", kill_on_drop: false }` [INFO] [stderr] Compiling nb v1.1.0 [INFO] [stderr] Compiling void v1.0.2 [INFO] [stderr] Compiling nb v0.1.3 [INFO] [stderr] Compiling embedded-hal v0.2.7 [INFO] [stderr] Compiling thermal_printer v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: fields `dot_print_time` and `dot_feed_time` are never read [INFO] [stdout] --> src/lib.rs:37:5 [INFO] [stdout] | [INFO] [stdout] 34 | pub struct ThermalPrinter where T: serial::Write { [INFO] [stdout] | -------------- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 37 | dot_print_time: u64, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] 38 | dot_feed_time: u64, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `ThermalPrinter` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [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 0.30s [INFO] running `Command { std: "docker" "inspect" "d394b722514dd2ed6906e726e1d0b99c18be28c8ca992b55f0e3819107b5b325", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d394b722514dd2ed6906e726e1d0b99c18be28c8ca992b55f0e3819107b5b325", kill_on_drop: false }` [INFO] [stdout] d394b722514dd2ed6906e726e1d0b99c18be28c8ca992b55f0e3819107b5b325 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e1ebda39c18f440dca75a02d357f2085b07ca50290edafc86b8dc79ad560d888 [INFO] running `Command { std: "docker" "start" "-a" "e1ebda39c18f440dca75a02d357f2085b07ca50290edafc86b8dc79ad560d888", kill_on_drop: false }` [INFO] [stderr] Compiling ioctl-rs v0.1.6 [INFO] [stderr] Compiling termios v0.2.2 [INFO] [stderr] Compiling serial-core v0.4.0 [INFO] [stdout] warning: fields `dot_print_time` and `dot_feed_time` are never read [INFO] [stdout] --> src/lib.rs:37:5 [INFO] [stdout] | [INFO] [stdout] 34 | pub struct ThermalPrinter where T: serial::Write { [INFO] [stdout] | -------------- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 37 | dot_print_time: u64, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] 38 | dot_feed_time: u64, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `ThermalPrinter` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling serial-unix v0.4.0 [INFO] [stderr] Compiling serial v0.4.0 [INFO] [stderr] Compiling serial-embedded-hal v0.1.2 [INFO] [stderr] Compiling thermal_printer v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: fields `dot_print_time` and `dot_feed_time` are never read [INFO] [stdout] --> src/lib.rs:37:5 [INFO] [stdout] | [INFO] [stdout] 34 | pub struct ThermalPrinter where T: serial::Write { [INFO] [stdout] | -------------- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 37 | dot_print_time: u64, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] 38 | dot_feed_time: u64, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `ThermalPrinter` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/unix.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | printer.configure(11, 120, 40); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 32 | let _ = printer.configure(11, 120, 40); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 1.08s [INFO] running `Command { std: "docker" "inspect" "e1ebda39c18f440dca75a02d357f2085b07ca50290edafc86b8dc79ad560d888", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e1ebda39c18f440dca75a02d357f2085b07ca50290edafc86b8dc79ad560d888", kill_on_drop: false }` [INFO] [stdout] e1ebda39c18f440dca75a02d357f2085b07ca50290edafc86b8dc79ad560d888 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 9f68a30d71c046e9a586b9b3228ef4e0b484522ccc37c01b01979ed50d2fba1e [INFO] running `Command { std: "docker" "start" "-a" "9f68a30d71c046e9a586b9b3228ef4e0b484522ccc37c01b01979ed50d2fba1e", kill_on_drop: false }` [INFO] [stderr] warning: fields `dot_print_time` and `dot_feed_time` are never read [INFO] [stderr] --> src/lib.rs:37:5 [INFO] [stderr] | [INFO] [stderr] 34 | pub struct ThermalPrinter where T: serial::Write { [INFO] [stderr] | -------------- fields in this struct [INFO] [stderr] ... [INFO] [stderr] 37 | dot_print_time: u64, [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] 38 | dot_feed_time: u64, [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `ThermalPrinter` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: `thermal_printer` (lib) generated 1 warning [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> examples/unix.rs:32:5 [INFO] [stderr] | [INFO] [stderr] 32 | printer.configure(11, 120, 40); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 32 | let _ = printer.configure(11, 120, 40); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `thermal_printer` (example "unix") generated 1 warning [INFO] [stderr] warning: `thermal_printer` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/thermal_printer-3c0a2e78d26872eb) [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] [stderr] Doc-tests thermal_printer [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" "9f68a30d71c046e9a586b9b3228ef4e0b484522ccc37c01b01979ed50d2fba1e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9f68a30d71c046e9a586b9b3228ef4e0b484522ccc37c01b01979ed50d2fba1e", kill_on_drop: false }` [INFO] [stdout] 9f68a30d71c046e9a586b9b3228ef4e0b484522ccc37c01b01979ed50d2fba1e