[INFO] updating cached repository tehsis/rust-piano
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tehsis/rust-piano
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tehsis/rust-piano" "work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/tehsis/rust-piano"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/tehsis/rust-piano'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tehsis/rust-piano" "work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/tehsis/rust-piano"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/tehsis/rust-piano'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c3756d0d06fa81253501295e9dfa8ee302f69808
[INFO] sha for GitHub repo tehsis/rust-piano: c3756d0d06fa81253501295e9dfa8ee302f69808
[INFO] validating manifest of tehsis/rust-piano on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tehsis/rust-piano on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tehsis/rust-piano
[INFO] finished frobbing tehsis/rust-piano
[INFO] frobbed toml for tehsis/rust-piano written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/tehsis/rust-piano/Cargo.toml
[INFO] started frobbing tehsis/rust-piano
[INFO] finished frobbing tehsis/rust-piano
[INFO] frobbed toml for tehsis/rust-piano written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/tehsis/rust-piano/Cargo.toml
[INFO] crate tehsis/rust-piano already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/crater-raid/crater/work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/tehsis/rust-piano/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/nicklan/rimd.git`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/nicklan/rimd.git`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tehsis/rust-piano against master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-2/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/tehsis/rust-piano:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e0ac7c4ee1bd672c1c151c390b3c4e5c5f5a20b7731f34aba47fe43eb92fe3c1
[INFO] running `"docker" "start" "-a" "e0ac7c4ee1bd672c1c151c390b3c4e5c5f5a20b7731f34aba47fe43eb92fe3c1"`
[INFO] [stderr]     Checking portmidi v0.2.4
[INFO] [stderr]     Checking ioctl-rs v0.1.6
[INFO] [stderr]     Checking rimd v0.0.1 (https://github.com/nicklan/rimd.git#ff1bddeb)
[INFO] [stderr]     Checking serial v0.3.4
[INFO] [stderr]     Checking rust-piano v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::prelude`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::io::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `force`
[INFO] [stderr]   --> src/main.rs:38:51
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn interact<T: SerialPort>(port: &mut T, num: u8, force: u8) -> io::Result<()> {
[INFO] [stderr]    |                                                   ^^^^^ help: consider prefixing with an underscore: `_force`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::io::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `force`
[INFO] [stderr]   --> src/main.rs:38:51
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn interact<T: SerialPort>(port: &mut T, num: u8, force: u8) -> io::Result<()> {
[INFO] [stderr]    |                                                   ^^^^^ help: consider prefixing with an underscore: `_force`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `"docker" "inspect" "e0ac7c4ee1bd672c1c151c390b3c4e5c5f5a20b7731f34aba47fe43eb92fe3c1"`
[INFO] running `"docker" "rm" "-f" "e0ac7c4ee1bd672c1c151c390b3c4e5c5f5a20b7731f34aba47fe43eb92fe3c1"`
[INFO] [stdout] e0ac7c4ee1bd672c1c151c390b3c4e5c5f5a20b7731f34aba47fe43eb92fe3c1