[INFO] cloning repository https://github.com/jclulow/serialping [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jclulow/serialping" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjclulow%2Fserialping", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjclulow%2Fserialping'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 470b4c1c44317d14254f4998b8bd0f90307dd02d [INFO] checking jclulow/serialping against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjclulow%2Fserialping" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jclulow/serialping 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/jclulow/serialping [INFO] finished tweaking git repo https://github.com/jclulow/serialping [INFO] tweaked toml for git repo https://github.com/jclulow/serialping written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/jclulow/serialping 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] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded ppv-lite86 v0.2.14 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b47c7d273efc0fc5efde4bfbb02f2d7d60250ff4987259441522dd7be61b4878 [INFO] running `Command { std: "docker" "start" "-a" "b47c7d273efc0fc5efde4bfbb02f2d7d60250ff4987259441522dd7be61b4878", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b47c7d273efc0fc5efde4bfbb02f2d7d60250ff4987259441522dd7be61b4878", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b47c7d273efc0fc5efde4bfbb02f2d7d60250ff4987259441522dd7be61b4878", kill_on_drop: false }` [INFO] [stdout] b47c7d273efc0fc5efde4bfbb02f2d7d60250ff4987259441522dd7be61b4878 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] d21799851110afc561e1020fc4a213592495d5b5aec1e25e7f67378ee5c70349 [INFO] running `Command { std: "docker" "start" "-a" "d21799851110afc561e1020fc4a213592495d5b5aec1e25e7f67378ee5c70349", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.104 [INFO] [stderr] Checking ppv-lite86 v0.2.14 [INFO] [stderr] Compiling anyhow v1.0.44 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking termios v0.3.3 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.4 [INFO] [stderr] Checking serialping v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::io` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::io; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::io; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:156:5 [INFO] [stdout] | [INFO] [stdout] 97 | / loop { [INFO] [stdout] 98 | | let byt = rng.gen_range(u8::MIN..=u8::MAX); [INFO] [stdout] 99 | | //println!("rand = {}", byt); [INFO] [stdout] 100 | | let mut outbuf = [byt]; [INFO] [stdout] ... | [INFO] [stdout] 153 | | //std::thread::sleep(Duration::from_millis(3)); [INFO] [stdout] 154 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 155 | [INFO] [stdout] 156 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:100:13 [INFO] [stdout] | [INFO] [stdout] 100 | let mut outbuf = [byt]; [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: unreachable expression [INFO] [stdout] --> src/main.rs:156:5 [INFO] [stdout] | [INFO] [stdout] 97 | / loop { [INFO] [stdout] 98 | | let byt = rng.gen_range(u8::MIN..=u8::MAX); [INFO] [stdout] 99 | | //println!("rand = {}", byt); [INFO] [stdout] 100 | | let mut outbuf = [byt]; [INFO] [stdout] ... | [INFO] [stdout] 153 | | //std::thread::sleep(Duration::from_millis(3)); [INFO] [stdout] 154 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 155 | [INFO] [stdout] 156 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:100:13 [INFO] [stdout] | [INFO] [stdout] 100 | let mut outbuf = [byt]; [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: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.43s [INFO] running `Command { std: "docker" "inspect" "d21799851110afc561e1020fc4a213592495d5b5aec1e25e7f67378ee5c70349", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d21799851110afc561e1020fc4a213592495d5b5aec1e25e7f67378ee5c70349", kill_on_drop: false }` [INFO] [stdout] d21799851110afc561e1020fc4a213592495d5b5aec1e25e7f67378ee5c70349 [INFO] checking jclulow/serialping against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjclulow%2Fserialping" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jclulow/serialping 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/jclulow/serialping [INFO] finished tweaking git repo https://github.com/jclulow/serialping [INFO] tweaked toml for git repo https://github.com/jclulow/serialping written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/jclulow/serialping 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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 371b789bfbd6ac7fa58c181814b2be4b0ea88293f165ce746e24cefc4a81933b [INFO] running `Command { std: "docker" "start" "-a" "371b789bfbd6ac7fa58c181814b2be4b0ea88293f165ce746e24cefc4a81933b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "371b789bfbd6ac7fa58c181814b2be4b0ea88293f165ce746e24cefc4a81933b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "371b789bfbd6ac7fa58c181814b2be4b0ea88293f165ce746e24cefc4a81933b", kill_on_drop: false }` [INFO] [stdout] 371b789bfbd6ac7fa58c181814b2be4b0ea88293f165ce746e24cefc4a81933b [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=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] 238cd0e8e505818760d2d8a4a68f189789b489c9bb821c5a18c7c1783435257a [INFO] running `Command { std: "docker" "start" "-a" "238cd0e8e505818760d2d8a4a68f189789b489c9bb821c5a18c7c1783435257a", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.104 [INFO] [stderr] Checking ppv-lite86 v0.2.14 [INFO] [stderr] Compiling anyhow v1.0.44 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking termios v0.3.3 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.4 [INFO] [stderr] Checking serialping v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::io` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::io; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::io; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:156:5 [INFO] [stdout] | [INFO] [stdout] 97 | / loop { [INFO] [stdout] 98 | | let byt = rng.gen_range(u8::MIN..=u8::MAX); [INFO] [stdout] 99 | | //println!("rand = {}", byt); [INFO] [stdout] 100 | | let mut outbuf = [byt]; [INFO] [stdout] ... | [INFO] [stdout] 153 | | //std::thread::sleep(Duration::from_millis(3)); [INFO] [stdout] 154 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 155 | [INFO] [stdout] 156 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:156:5 [INFO] [stdout] | [INFO] [stdout] 97 | / loop { [INFO] [stdout] 98 | | let byt = rng.gen_range(u8::MIN..=u8::MAX); [INFO] [stdout] 99 | | //println!("rand = {}", byt); [INFO] [stdout] 100 | | let mut outbuf = [byt]; [INFO] [stdout] ... | [INFO] [stdout] 153 | | //std::thread::sleep(Duration::from_millis(3)); [INFO] [stdout] 154 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 155 | [INFO] [stdout] 156 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:100:13 [INFO] [stdout] | [INFO] [stdout] 100 | let mut outbuf = [byt]; [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: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:100:13 [INFO] [stdout] | [INFO] [stdout] 100 | let mut outbuf = [byt]; [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: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.15s [INFO] running `Command { std: "docker" "inspect" "238cd0e8e505818760d2d8a4a68f189789b489c9bb821c5a18c7c1783435257a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "238cd0e8e505818760d2d8a4a68f189789b489c9bb821c5a18c7c1783435257a", kill_on_drop: false }` [INFO] [stdout] 238cd0e8e505818760d2d8a4a68f189789b489c9bb821c5a18c7c1783435257a