[INFO] cloning repository https://github.com/cho0h5/serial-recoder [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cho0h5/serial-recoder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcho0h5%2Fserial-recoder", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcho0h5%2Fserial-recoder'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 11bb0e2915fd4915af15aa309b03c77987e31e13 [INFO] checking cho0h5/serial-recoder against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcho0h5%2Fserial-recoder" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/cho0h5/serial-recoder 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/cho0h5/serial-recoder [INFO] finished tweaking git repo https://github.com/cho0h5/serial-recoder [INFO] tweaked toml for git repo https://github.com/cho0h5/serial-recoder written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/cho0h5/serial-recoder 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] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded libudev v0.3.0 [INFO] [stderr] Downloaded mach v0.3.2 [INFO] [stderr] Downloaded serialport v4.2.0 [INFO] [stderr] Downloaded IOKit-sys v0.1.5 [INFO] [stderr] Downloaded core-foundation-sys v0.8.3 [INFO] [stderr] Downloaded quote v1.0.23 [INFO] [stderr] Downloaded cxxbridge-macro v1.0.89 [INFO] [stderr] Downloaded cxx-build v1.0.89 [INFO] [stderr] Downloaded libc v0.2.139 [INFO] [stderr] Downloaded js-sys v0.3.61 [INFO] [stderr] Downloaded cxx v1.0.89 [INFO] [stderr] Downloaded bumpalo v3.12.0 [INFO] [stderr] Downloaded syn v1.0.107 [INFO] [stderr] Downloaded wasm-bindgen v0.2.84 [INFO] [stderr] Downloaded chrono v0.4.23 [INFO] [stderr] Downloaded nix v0.24.3 [INFO] [stderr] Downloaded regex-syntax v0.6.28 [INFO] [stderr] Downloaded regex v1.7.1 [INFO] [stderr] Downloaded cc v1.0.79 [INFO] [stderr] Downloaded codespan-reporting v0.11.1 [INFO] [stderr] Downloaded iana-time-zone-haiku v0.1.1 [INFO] [stderr] Downloaded proc-macro2 v1.0.50 [INFO] [stderr] Downloaded mach v0.1.2 [INFO] [stderr] Downloaded wasm-bindgen-backend v0.2.84 [INFO] [stderr] Downloaded CoreFoundation-sys v0.1.4 [INFO] [stderr] Downloaded pkg-config v0.3.26 [INFO] [stderr] Downloaded aho-corasick v0.7.20 [INFO] [stderr] Downloaded cxxbridge-flags v1.0.89 [INFO] [stderr] Downloaded link-cplusplus v1.0.8 [INFO] [stderr] Downloaded termcolor v1.2.0 [INFO] [stderr] Downloaded unicode-width v0.1.10 [INFO] [stderr] Downloaded scratch v1.0.3 [INFO] [stderr] Downloaded iana-time-zone v0.1.53 [INFO] [stderr] Downloaded num-integer v0.1.45 [INFO] [stderr] Downloaded time v0.1.45 [INFO] [stderr] Downloaded log v0.4.17 [INFO] [stderr] Downloaded once_cell v1.17.0 [INFO] [stderr] Downloaded unicode-ident v1.0.6 [INFO] [stderr] Downloaded wasm-bindgen-shared v0.2.84 [INFO] [stderr] Downloaded wasm-bindgen-macro-support v0.2.84 [INFO] [stderr] Downloaded wasm-bindgen-macro v0.2.84 [INFO] [stderr] Downloaded libudev-sys v0.1.4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] bc884b317293fbfbf684960b3ddae09e2320b81ce0c70eddb78094f06c00b11f [INFO] running `Command { std: "docker" "start" "-a" "bc884b317293fbfbf684960b3ddae09e2320b81ce0c70eddb78094f06c00b11f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "bc884b317293fbfbf684960b3ddae09e2320b81ce0c70eddb78094f06c00b11f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bc884b317293fbfbf684960b3ddae09e2320b81ce0c70eddb78094f06c00b11f", kill_on_drop: false }` [INFO] [stdout] bc884b317293fbfbf684960b3ddae09e2320b81ce0c70eddb78094f06c00b11f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 944878a8635a96e8f66df8caf675b10cebe745ef94a9be0e2728e846dd88824a [INFO] running `Command { std: "docker" "start" "-a" "944878a8635a96e8f66df8caf675b10cebe745ef94a9be0e2728e846dd88824a", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.139 [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling pkg-config v0.3.26 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Checking iana-time-zone v0.1.53 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling num-integer v0.1.45 [INFO] [stderr] Compiling libudev-sys v0.1.4 [INFO] [stderr] Checking time v0.1.45 [INFO] [stderr] Checking nix v0.24.3 [INFO] [stderr] Checking libudev v0.3.0 [INFO] [stderr] Checking chrono v0.4.23 [INFO] [stderr] Checking serialport v4.2.0 [INFO] [stderr] Checking serial-recorder v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `BufRead` is imported redundantly [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::io::BufRead; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 6 | use std::io::prelude::*; [INFO] [stdout] | ------------------- the item `BufRead` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `BufRead` is imported redundantly [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::io::BufRead; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 6 | use std::io::prelude::*; [INFO] [stdout] | ------------------- the item `BufRead` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | writeln!(file, "{}, {}", Local::now().format("%Y-%m-%d %H:%M:%S"), data.trim()); [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)]` on by default [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | writeln!(file, "{}, {}", Local::now().format("%Y-%m-%d %H:%M:%S"), data.trim()); [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)]` on by default [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.80s [INFO] running `Command { std: "docker" "inspect" "944878a8635a96e8f66df8caf675b10cebe745ef94a9be0e2728e846dd88824a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "944878a8635a96e8f66df8caf675b10cebe745ef94a9be0e2728e846dd88824a", kill_on_drop: false }` [INFO] [stdout] 944878a8635a96e8f66df8caf675b10cebe745ef94a9be0e2728e846dd88824a [INFO] checking cho0h5/serial-recoder against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcho0h5%2Fserial-recoder" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/cho0h5/serial-recoder 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/cho0h5/serial-recoder [INFO] finished tweaking git repo https://github.com/cho0h5/serial-recoder [INFO] tweaked toml for git repo https://github.com/cho0h5/serial-recoder written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/cho0h5/serial-recoder 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 66498c4f390d21c98a470cec7da139d2e65787a03216a58e8afc5c3b58336835 [INFO] running `Command { std: "docker" "start" "-a" "66498c4f390d21c98a470cec7da139d2e65787a03216a58e8afc5c3b58336835", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "66498c4f390d21c98a470cec7da139d2e65787a03216a58e8afc5c3b58336835", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "66498c4f390d21c98a470cec7da139d2e65787a03216a58e8afc5c3b58336835", kill_on_drop: false }` [INFO] [stdout] 66498c4f390d21c98a470cec7da139d2e65787a03216a58e8afc5c3b58336835 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 552c46041ebf90449bc1dddd9d0b510a50a87c7e334887cad7bbe599e1159989 [INFO] running `Command { std: "docker" "start" "-a" "552c46041ebf90449bc1dddd9d0b510a50a87c7e334887cad7bbe599e1159989", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.139 [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling pkg-config v0.3.26 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking iana-time-zone v0.1.53 [INFO] [stderr] Compiling libudev-sys v0.1.4 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling num-integer v0.1.45 [INFO] [stderr] Checking time v0.1.45 [INFO] [stderr] Checking nix v0.24.3 [INFO] [stderr] Checking libudev v0.3.0 [INFO] [stderr] Checking chrono v0.4.23 [INFO] [stderr] Checking serialport v4.2.0 [INFO] [stderr] Checking serial-recorder v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `BufRead` is imported redundantly [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::io::BufRead; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 6 | use std::io::prelude::*; [INFO] [stdout] | ------------------- the item `BufRead` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `BufRead` is imported redundantly [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::io::BufRead; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 6 | use std::io::prelude::*; [INFO] [stdout] | ------------------- the item `BufRead` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | writeln!(file, "{}, {}", Local::now().format("%Y-%m-%d %H:%M:%S"), data.trim()); [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)]` on by default [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | writeln!(file, "{}, {}", Local::now().format("%Y-%m-%d %H:%M:%S"), data.trim()); [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)]` on by default [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.17s [INFO] running `Command { std: "docker" "inspect" "552c46041ebf90449bc1dddd9d0b510a50a87c7e334887cad7bbe599e1159989", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "552c46041ebf90449bc1dddd9d0b510a50a87c7e334887cad7bbe599e1159989", kill_on_drop: false }` [INFO] [stdout] 552c46041ebf90449bc1dddd9d0b510a50a87c7e334887cad7bbe599e1159989