[INFO] cloning repository https://github.com/klimatt/serial_tester [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/klimatt/serial_tester" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fklimatt%2Fserial_tester", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fklimatt%2Fserial_tester'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 9b90ac0246521f35a4b5b218458767f845eb02aa [INFO] checking klimatt/serial_tester against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fklimatt%2Fserial_tester" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/klimatt/serial_tester 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/klimatt/serial_tester [INFO] finished tweaking git repo https://github.com/klimatt/serial_tester [INFO] tweaked toml for git repo https://github.com/klimatt/serial_tester written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/klimatt/serial_tester 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 tokio-serial v4.3.3 [INFO] [stderr] Downloaded tokio-util v0.2.0 [INFO] [stderr] Downloaded clap_derive v3.0.0-beta.1 [INFO] [stderr] Downloaded os_str_bytes v2.3.1 [INFO] [stderr] Downloaded proc-macro-error-attr v0.4.12 [INFO] [stderr] Downloaded mio-serial v3.3.0 [INFO] [stderr] Downloaded proc-macro-error v0.4.12 [INFO] [stderr] Downloaded cc v1.0.56 [INFO] [stderr] Downloaded clap v3.0.0-beta.1 [INFO] [stderr] Downloaded tokio v0.2.21 [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] 0b3b16bb556c98e4017c9c41752333323ccdb141cfd776f39e124031596be686 [INFO] running `Command { std: "docker" "start" "-a" "0b3b16bb556c98e4017c9c41752333323ccdb141cfd776f39e124031596be686", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0b3b16bb556c98e4017c9c41752333323ccdb141cfd776f39e124031596be686", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0b3b16bb556c98e4017c9c41752333323ccdb141cfd776f39e124031596be686", kill_on_drop: false }` [INFO] [stdout] 0b3b16bb556c98e4017c9c41752333323ccdb141cfd776f39e124031596be686 [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] 85f185403d7ede9a947273a96851bd821f6d7d036e554d58afd71ac67a60fb67 [INFO] running `Command { std: "docker" "start" "-a" "85f185403d7ede9a947273a96851bd821f6d7d036e554d58afd71ac67a60fb67", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.18 [INFO] [stderr] Compiling libc v0.2.71 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.33 [INFO] [stderr] Compiling version_check v0.9.2 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling pkg-config v0.3.17 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling pin-project-internal v0.4.22 [INFO] [stderr] Compiling proc-macro-error-attr v0.4.12 [INFO] [stderr] Compiling proc-macro-nested v0.1.6 [INFO] [stderr] Compiling libudev-sys v0.1.4 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Checking futures-core v0.3.5 [INFO] [stderr] Compiling nix v0.14.1 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Checking futures-sink v0.3.5 [INFO] [stderr] Compiling proc-macro-error v0.4.12 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Checking once_cell v1.4.0 [INFO] [stderr] Compiling proc-macro-hack v0.5.16 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking futures-task v0.3.5 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.34 [INFO] [stderr] Compiling indexmap v1.4.0 [INFO] [stderr] Checking libudev v0.2.0 [INFO] [stderr] Checking mio v0.6.22 [INFO] [stderr] Checking futures-channel v0.3.5 [INFO] [stderr] Compiling unicode-segmentation v1.6.0 [INFO] [stderr] Checking bytes v0.5.5 [INFO] [stderr] Checking pin-project-lite v0.1.7 [INFO] [stderr] Checking futures-io v0.3.5 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking ppv-lite86 v0.2.8 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking termcolor v1.1.0 [INFO] [stderr] Checking os_str_bytes v2.3.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking serialport v3.3.0 [INFO] [stderr] Checking mio-serial v3.3.0 [INFO] [stderr] Compiling syn-mid v0.5.0 [INFO] [stderr] Compiling futures-macro v0.3.5 [INFO] [stderr] Compiling tokio-macros v0.2.5 [INFO] [stderr] Checking tokio v0.2.21 [INFO] [stderr] Compiling clap_derive v3.0.0-beta.1 [INFO] [stderr] Checking tokio-util v0.2.0 [INFO] [stderr] Checking tokio-serial v4.3.3 [INFO] [stderr] Checking pin-project v0.4.22 [INFO] [stderr] Checking futures-util v0.3.5 [INFO] [stderr] Checking clap v3.0.0-beta.1 [INFO] [stderr] Checking futures-executor v0.3.5 [INFO] [stderr] Checking futures v0.3.5 [INFO] [stderr] Checking serial_tester v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `env` [INFO] [stdout] --> src/main.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{env, io, str}; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `clap::Arg::<'help>::help`: Please use `about` method instead [INFO] [stdout] --> src/main.rs:58:14 [INFO] [stdout] | [INFO] [stdout] 58 | .help("Serial port to connect")) [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `clap::Arg::<'help>::help`: Please use `about` method instead [INFO] [stdout] --> src/main.rs:63:14 [INFO] [stdout] | [INFO] [stdout] 63 | .help("Serial baudrate")) [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `env` [INFO] [stdout] --> src/main.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{env, io, str}; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `clap::Arg::<'help>::help`: Please use `about` method instead [INFO] [stdout] --> src/main.rs:58:14 [INFO] [stdout] | [INFO] [stdout] 58 | .help("Serial port to connect")) [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `clap::Arg::<'help>::help`: Please use `about` method instead [INFO] [stdout] --> src/main.rs:63:14 [INFO] [stdout] | [INFO] [stdout] 63 | .help("Serial baudrate")) [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:70:9 [INFO] [stdout] | [INFO] [stdout] 70 | let mut settings = tokio_serial::SerialPortSettings::default(); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/main.rs:71:60 [INFO] [stdout] | [INFO] [stdout] 71 | let mut port = tokio_serial::Serial::from_path(tty_path.clone(), &settings).unwrap(); [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:81:5 [INFO] [stdout] | [INFO] [stdout] 81 | port.set_baud_rate(baud.parse().unwrap()); [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] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 81 | let _ = port.set_baud_rate(baud.parse().unwrap()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:89:5 [INFO] [stdout] | [INFO] [stdout] 89 | tx.send(random_array.clone()).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 89 | let _ = tx.send(random_array.clone()).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:70:9 [INFO] [stdout] | [INFO] [stdout] 70 | let mut settings = tokio_serial::SerialPortSettings::default(); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/main.rs:71:60 [INFO] [stdout] | [INFO] [stdout] 71 | let mut port = tokio_serial::Serial::from_path(tty_path.clone(), &settings).unwrap(); [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:81:5 [INFO] [stdout] | [INFO] [stdout] 81 | port.set_baud_rate(baud.parse().unwrap()); [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] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 81 | let _ = port.set_baud_rate(baud.parse().unwrap()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:89:5 [INFO] [stdout] | [INFO] [stdout] 89 | tx.send(random_array.clone()).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 89 | let _ = tx.send(random_array.clone()).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.13s [INFO] running `Command { std: "docker" "inspect" "85f185403d7ede9a947273a96851bd821f6d7d036e554d58afd71ac67a60fb67", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "85f185403d7ede9a947273a96851bd821f6d7d036e554d58afd71ac67a60fb67", kill_on_drop: false }` [INFO] [stdout] 85f185403d7ede9a947273a96851bd821f6d7d036e554d58afd71ac67a60fb67