[INFO] fetching crate uwb_serial 1.0.0... [INFO] checking uwb_serial-1.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate uwb_serial 1.0.0 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate uwb_serial 1.0.0 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 crates.io crate uwb_serial 1.0.0 [INFO] finished tweaking crates.io crate uwb_serial 1.0.0 [INFO] tweaked toml for crates.io crate uwb_serial 1.0.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate crates.io crate uwb_serial 1.0.0 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] [stderr] Downloading crates ... [INFO] [stderr] Downloaded unindent v0.1.10 [INFO] [stderr] Downloaded pyo3-ffi v0.16.5 [INFO] [stderr] Downloaded pyo3-macros v0.16.5 [INFO] [stderr] Downloaded target-lexicon v0.12.4 [INFO] [stderr] Downloaded indoc v1.0.7 [INFO] [stderr] Downloaded pyo3-build-config v0.16.5 [INFO] [stderr] Downloaded pyo3-macros-backend v0.16.5 [INFO] [stderr] Downloaded serialport v4.2.0 [INFO] [stderr] Downloaded pyo3 v0.16.5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ea717eaa4df83b69a75305d105c8578ce661062034d47a08fce79f0ff98d9407 [INFO] running `Command { std: "docker" "start" "-a" "ea717eaa4df83b69a75305d105c8578ce661062034d47a08fce79f0ff98d9407", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ea717eaa4df83b69a75305d105c8578ce661062034d47a08fce79f0ff98d9407", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ea717eaa4df83b69a75305d105c8578ce661062034d47a08fce79f0ff98d9407", kill_on_drop: false }` [INFO] [stdout] ea717eaa4df83b69a75305d105c8578ce661062034d47a08fce79f0ff98d9407 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] c8546152ee6d4c2b05e10215b692f9fce3d99786902f7ca151e73ab60b8beb8d [INFO] running `Command { std: "docker" "start" "-a" "c8546152ee6d4c2b05e10215b692f9fce3d99786902f7ca151e73ab60b8beb8d", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.127 [INFO] [stderr] Compiling target-lexicon v0.12.4 [INFO] [stderr] Compiling proc-macro2 v1.0.43 [INFO] [stderr] Compiling once_cell v1.13.0 [INFO] [stderr] Compiling syn v1.0.99 [INFO] [stderr] Compiling pkg-config v0.3.25 [INFO] [stderr] Checking os_str_bytes v6.2.0 [INFO] [stderr] Compiling indexmap v1.9.1 [INFO] [stderr] Checking textwrap v0.15.0 [INFO] [stderr] Checking termcolor v1.1.3 [INFO] [stderr] Checking unindent v0.1.10 [INFO] [stderr] Compiling indoc v1.0.7 [INFO] [stderr] Checking clap_lex v0.2.4 [INFO] [stderr] Compiling libudev-sys v0.1.4 [INFO] [stderr] Compiling quote v1.0.21 [INFO] [stderr] Compiling pyo3-build-config v0.16.5 [INFO] [stderr] Checking parking_lot_core v0.9.3 [INFO] [stderr] Checking nix v0.24.2 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v3.2.16 [INFO] [stderr] Checking libudev v0.3.0 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Compiling pyo3-ffi v0.16.5 [INFO] [stderr] Compiling pyo3 v0.16.5 [INFO] [stderr] Checking serialport v4.2.0 [INFO] [stderr] Compiling pyo3-macros-backend v0.16.5 [INFO] [stderr] Compiling pyo3-macros v0.16.5 [INFO] [stderr] Checking uwb_serial v1.0.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:98:29 [INFO] [stdout] | [INFO] [stdout] 98 | ... std::mem::drop(&port); [INFO] [stdout] | ^^^^^^^^^^^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&TTYPort` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:145:37 [INFO] [stdout] | [INFO] [stdout] 145 | ... std::mem::drop(&port); [INFO] [stdout] | ^^^^^^^^^^^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&TTYPort` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:98:29 [INFO] [stdout] | [INFO] [stdout] 98 | ... std::mem::drop(&port); [INFO] [stdout] | ^^^^^^^^^^^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&TTYPort` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:145:37 [INFO] [stdout] | [INFO] [stdout] 145 | ... std::mem::drop(&port); [INFO] [stdout] | ^^^^^^^^^^^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&TTYPort` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.16s [INFO] running `Command { std: "docker" "inspect" "c8546152ee6d4c2b05e10215b692f9fce3d99786902f7ca151e73ab60b8beb8d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c8546152ee6d4c2b05e10215b692f9fce3d99786902f7ca151e73ab60b8beb8d", kill_on_drop: false }` [INFO] [stdout] c8546152ee6d4c2b05e10215b692f9fce3d99786902f7ca151e73ab60b8beb8d [INFO] checking uwb_serial-1.0.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] extracting crate uwb_serial 1.0.0 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate uwb_serial 1.0.0 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 crates.io crate uwb_serial 1.0.0 [INFO] finished tweaking crates.io crate uwb_serial 1.0.0 [INFO] tweaked toml for crates.io crate uwb_serial 1.0.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate crates.io crate uwb_serial 1.0.0 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 13078ecc4bec87768e9bbcd34960d12765134fe8f4a2fd28c014c943f820d0d1 [INFO] running `Command { std: "docker" "start" "-a" "13078ecc4bec87768e9bbcd34960d12765134fe8f4a2fd28c014c943f820d0d1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "13078ecc4bec87768e9bbcd34960d12765134fe8f4a2fd28c014c943f820d0d1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "13078ecc4bec87768e9bbcd34960d12765134fe8f4a2fd28c014c943f820d0d1", kill_on_drop: false }` [INFO] [stdout] 13078ecc4bec87768e9bbcd34960d12765134fe8f4a2fd28c014c943f820d0d1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] babfec40d9f57a9c6e7582ea336c46141e44572f4482c1371be4d77b54b26c6c [INFO] running `Command { std: "docker" "start" "-a" "babfec40d9f57a9c6e7582ea336c46141e44572f4482c1371be4d77b54b26c6c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.127 [INFO] [stderr] Compiling target-lexicon v0.12.4 [INFO] [stderr] Compiling proc-macro2 v1.0.43 [INFO] [stderr] Compiling once_cell v1.13.0 [INFO] [stderr] Compiling pkg-config v0.3.25 [INFO] [stderr] Compiling syn v1.0.99 [INFO] [stderr] Checking os_str_bytes v6.2.0 [INFO] [stderr] Compiling indexmap v1.9.1 [INFO] [stderr] Checking textwrap v0.15.0 [INFO] [stderr] Checking unindent v0.1.10 [INFO] [stderr] Checking termcolor v1.1.3 [INFO] [stderr] Compiling indoc v1.0.7 [INFO] [stderr] Checking clap_lex v0.2.4 [INFO] [stderr] Compiling libudev-sys v0.1.4 [INFO] [stderr] Compiling quote v1.0.21 [INFO] [stderr] Compiling pyo3-build-config v0.16.5 [INFO] [stderr] Checking parking_lot_core v0.9.3 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking nix v0.24.2 [INFO] [stderr] Checking clap v3.2.16 [INFO] [stderr] Checking libudev v0.3.0 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Compiling pyo3-ffi v0.16.5 [INFO] [stderr] Compiling pyo3 v0.16.5 [INFO] [stderr] Checking serialport v4.2.0 [INFO] [stderr] Compiling pyo3-macros-backend v0.16.5 [INFO] [stderr] Compiling pyo3-macros v0.16.5 [INFO] [stderr] Checking uwb_serial v1.0.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:98:29 [INFO] [stdout] | [INFO] [stdout] 98 | ... std::mem::drop(&port); [INFO] [stdout] | ^^^^^^^^^^^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&TTYPort` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:145:37 [INFO] [stdout] | [INFO] [stdout] 145 | ... std::mem::drop(&port); [INFO] [stdout] | ^^^^^^^^^^^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&TTYPort` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:98:29 [INFO] [stdout] | [INFO] [stdout] 98 | ... std::mem::drop(&port); [INFO] [stdout] | ^^^^^^^^^^^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&TTYPort` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:145:37 [INFO] [stdout] | [INFO] [stdout] 145 | ... std::mem::drop(&port); [INFO] [stdout] | ^^^^^^^^^^^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&TTYPort` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.25s [INFO] running `Command { std: "docker" "inspect" "babfec40d9f57a9c6e7582ea336c46141e44572f4482c1371be4d77b54b26c6c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "babfec40d9f57a9c6e7582ea336c46141e44572f4482c1371be4d77b54b26c6c", kill_on_drop: false }` [INFO] [stdout] babfec40d9f57a9c6e7582ea336c46141e44572f4482c1371be4d77b54b26c6c