[INFO] cloning repository https://github.com/cloudybyte/drinklogger [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cloudybyte/drinklogger" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcloudybyte%2Fdrinklogger", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcloudybyte%2Fdrinklogger'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 94a1d240abf76e733bf7dce9f343dec80b9ae7d5 [INFO] checking cloudybyte/drinklogger against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcloudybyte%2Fdrinklogger" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/cloudybyte/drinklogger 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] removed /workspace/builds/worker-1-tc1/source/.cargo/config [INFO] started tweaking git repo https://github.com/cloudybyte/drinklogger [INFO] finished tweaking git repo https://github.com/cloudybyte/drinklogger [INFO] tweaked toml for git repo https://github.com/cloudybyte/drinklogger written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/cloudybyte/drinklogger 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 pwr-hd44780 v0.1.3 [INFO] [stderr] Downloaded rppal v0.2.0 [INFO] [stderr] Downloaded spidev v0.4.1 [INFO] [stderr] Downloaded rfid-rs v0.1.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 412f998f3aedeef5a91febf4b50d66610d496a0e6e8a42ea9f222d56a0f0edce [INFO] running `Command { std: "docker" "start" "-a" "412f998f3aedeef5a91febf4b50d66610d496a0e6e8a42ea9f222d56a0f0edce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "412f998f3aedeef5a91febf4b50d66610d496a0e6e8a42ea9f222d56a0f0edce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "412f998f3aedeef5a91febf4b50d66610d496a0e6e8a42ea9f222d56a0f0edce", kill_on_drop: false }` [INFO] [stdout] 412f998f3aedeef5a91febf4b50d66610d496a0e6e8a42ea9f222d56a0f0edce [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] a247f497229b432561c6da5e92971845dc0756986c8fda771da9102e21808a4e [INFO] running `Command { std: "docker" "start" "-a" "a247f497229b432561c6da5e92971845dc0756986c8fda771da9102e21808a4e", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.105 [INFO] [stderr] Compiling proc-macro2 v1.0.30 [INFO] [stderr] Compiling syn v1.0.80 [INFO] [stderr] Compiling serde v1.0.130 [INFO] [stderr] Compiling ucd-trie v0.1.3 [INFO] [stderr] Compiling unicase v2.6.0 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling ppv-lite86 v0.2.15 [INFO] [stderr] Compiling serde_json v1.0.68 [INFO] [stderr] Compiling pest v2.1.3 [INFO] [stderr] Compiling error-chain v0.12.4 [INFO] [stderr] Compiling itoa v0.4.8 [INFO] [stderr] Compiling pulldown-cmark v0.8.0 [INFO] [stderr] Compiling remove_dir_all v0.5.3 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling quote v1.0.10 [INFO] [stderr] Compiling getrandom v0.2.3 [INFO] [stderr] Compiling bytecount v0.6.2 [INFO] [stderr] Compiling rand_core v0.6.3 [INFO] [stderr] Compiling semver-parser v0.10.2 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking num-integer v0.1.44 [INFO] [stderr] Compiling nix v0.14.1 [INFO] [stderr] Compiling nix v0.10.0 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking enum_primitive v0.1.1 [INFO] [stderr] Checking num v0.1.42 [INFO] [stderr] Compiling rand v0.8.4 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Checking rppal v0.2.0 [INFO] [stderr] Compiling tempfile v3.2.0 [INFO] [stderr] Compiling serde_derive v1.0.130 [INFO] [stderr] Checking spidev v0.4.1 [INFO] [stderr] Checking rfid-rs v0.1.3 [INFO] [stderr] Compiling semver v0.11.0 [INFO] [stderr] Compiling cargo-platform v0.1.2 [INFO] [stderr] Compiling cargo_metadata v0.12.3 [INFO] [stderr] Compiling skeptic v0.13.6 [INFO] [stderr] Compiling i2cdev v0.3.2 [INFO] [stderr] Checking pwr-hd44780 v0.1.3 [INFO] [stderr] Checking drinklogger v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `io::Read` [INFO] [stdout] --> src/main.rs:3:16 [INFO] [stdout] | [INFO] [stdout] 3 | use std::{env, io::Read, thread, time::Duration}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `io::Read` [INFO] [stdout] --> src/main.rs:3:16 [INFO] [stdout] | [INFO] [stdout] 3 | use std::{env, io::Read, thread, time::Duration}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/main.rs:101:13 [INFO] [stdout] | [INFO] [stdout] 90 | / match reader.mifare_write(block, &buffer) { [INFO] [stdout] 91 | | Ok(_) => { [INFO] [stdout] 92 | | println!("Wrote block {} successfully", block); [INFO] [stdout] 93 | | return buffer; [INFO] [stdout] ... | [INFO] [stdout] 98 | | } [INFO] [stdout] 99 | | } [INFO] [stdout] | |_____________- any code following this `match` expression is unreachable, as all arms diverge [INFO] [stdout] 100 | [INFO] [stdout] 101 | reader.halt_a().expect("Could not halt"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/main.rs:101:13 [INFO] [stdout] | [INFO] [stdout] 90 | / match reader.mifare_write(block, &buffer) { [INFO] [stdout] 91 | | Ok(_) => { [INFO] [stdout] 92 | | println!("Wrote block {} successfully", block); [INFO] [stdout] 93 | | return buffer; [INFO] [stdout] ... | [INFO] [stdout] 98 | | } [INFO] [stdout] 99 | | } [INFO] [stdout] | |_____________- any code following this `match` expression is unreachable, as all arms diverge [INFO] [stdout] 100 | [INFO] [stdout] 101 | reader.halt_a().expect("Could not halt"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/main.rs:30:25 [INFO] [stdout] | [INFO] [stdout] 30 | if let Some(name) = args.get(2) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/main.rs:30:25 [INFO] [stdout] | [INFO] [stdout] 30 | if let Some(name) = args.get(2) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:126:17 [INFO] [stdout] | [INFO] [stdout] 126 | let mut block = 1; [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: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:126:17 [INFO] [stdout] | [INFO] [stdout] 126 | let mut block = 1; [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: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.77s [INFO] running `Command { std: "docker" "inspect" "a247f497229b432561c6da5e92971845dc0756986c8fda771da9102e21808a4e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a247f497229b432561c6da5e92971845dc0756986c8fda771da9102e21808a4e", kill_on_drop: false }` [INFO] [stdout] a247f497229b432561c6da5e92971845dc0756986c8fda771da9102e21808a4e