[INFO] cloning repository krishnakumar4a4/usb_com [INFO] running `"git" "clone" "--bare" "git://github.com/krishnakumar4a4/usb_com.git" "work/cache/sources/gh/krishnakumar4a4/usb_com"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/krishnakumar4a4/usb_com'... [INFO] running `"git" "clone" "work/cache/sources/gh/krishnakumar4a4/usb_com" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/krishnakumar4a4/usb_com"` [INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/krishnakumar4a4/usb_com'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/krishnakumar4a4/usb_com" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/krishnakumar4a4/usb_com"` [INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/krishnakumar4a4/usb_com'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 64f4e47bacc3c08387e00589a2c2d40d682bb7d4 [INFO] sha for GitHub repo krishnakumar4a4/usb_com: 64f4e47bacc3c08387e00589a2c2d40d682bb7d4 [INFO] validating manifest of krishnakumar4a4/usb_com on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of krishnakumar4a4/usb_com on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing krishnakumar4a4/usb_com [INFO] finished frobbing krishnakumar4a4/usb_com [INFO] frobbed toml for krishnakumar4a4/usb_com written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/krishnakumar4a4/usb_com/Cargo.toml [INFO] started frobbing krishnakumar4a4/usb_com [INFO] finished frobbing krishnakumar4a4/usb_com [INFO] frobbed toml for krishnakumar4a4/usb_com written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/krishnakumar4a4/usb_com/Cargo.toml [INFO] crate krishnakumar4a4/usb_com already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking krishnakumar4a4/usb_com against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-5/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/krishnakumar4a4/usb_com:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 3d0a8c95b751dd7e9ed59211a1332a76b6906fbcb0fcde07770872ca5b9f1d79 [INFO] running `"docker" "start" "-a" "3d0a8c95b751dd7e9ed59211a1332a76b6906fbcb0fcde07770872ca5b9f1d79"` [INFO] [stderr] Checking libusb-sys v0.2.3 [INFO] [stderr] Checking libusb v0.3.0 [INFO] [stderr] Checking usb_com v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> examples/read_wacom_device.rs:132:17 [INFO] [stderr] | [INFO] [stderr] 132 | let mut buf = unsafe { slice::from_raw_parts_mut((&mut vec[..]).as_mut_ptr(), vec.capacity()) }; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> examples/read_device.rs:132:17 [INFO] [stderr] | [INFO] [stderr] 132 | let mut buf = unsafe { slice::from_raw_parts_mut((&mut vec[..]).as_mut_ptr(), vec.capacity()) }; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | let mut context = libusb::Context::new().unwrap(); [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:25:9 [INFO] [stderr] | [INFO] [stderr] 25 | for mut device in context.devices().unwrap().iter() { [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | let mut context = libusb::Context::new().unwrap(); [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:25:9 [INFO] [stderr] | [INFO] [stderr] 25 | for mut device in context.devices().unwrap().iter() { [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.02s [INFO] running `"docker" "inspect" "3d0a8c95b751dd7e9ed59211a1332a76b6906fbcb0fcde07770872ca5b9f1d79"` [INFO] running `"docker" "rm" "-f" "3d0a8c95b751dd7e9ed59211a1332a76b6906fbcb0fcde07770872ca5b9f1d79"` [INFO] [stdout] 3d0a8c95b751dd7e9ed59211a1332a76b6906fbcb0fcde07770872ca5b9f1d79