[INFO] updating cached repository dbeck/tcp-echo-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dbeck/tcp-echo-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dbeck/tcp-echo-rs" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/dbeck/tcp-echo-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/dbeck/tcp-echo-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dbeck/tcp-echo-rs" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/dbeck/tcp-echo-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/dbeck/tcp-echo-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bb4c07335482d0063fba3f0cc7d41d32a46f510b
[INFO] sha for GitHub repo dbeck/tcp-echo-rs: bb4c07335482d0063fba3f0cc7d41d32a46f510b
[INFO] validating manifest of dbeck/tcp-echo-rs on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dbeck/tcp-echo-rs on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dbeck/tcp-echo-rs
[INFO] finished frobbing dbeck/tcp-echo-rs
[INFO] frobbed toml for dbeck/tcp-echo-rs written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/dbeck/tcp-echo-rs/Cargo.toml
[INFO] started frobbing dbeck/tcp-echo-rs
[INFO] finished frobbing dbeck/tcp-echo-rs
[INFO] frobbed toml for dbeck/tcp-echo-rs written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/dbeck/tcp-echo-rs/Cargo.toml
[INFO] crate dbeck/tcp-echo-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/dbeck/tcp-echo-rs/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" "+a850a426491e14186af2250549bf41256b5938d2-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking dbeck/tcp-echo-rs against try#06a150c7d11500b41499224f165e9de1de096768 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-7/try#06a150c7d11500b41499224f165e9de1de096768:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/dbeck/tcp-echo-rs:/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" "+06a150c7d11500b41499224f165e9de1de096768-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3c58c8699a8f28c233baf9fd8ed118b075f4fdef70437158e3fea917cf831666
[INFO] running `"docker" "start" "-a" "3c58c8699a8f28c233baf9fd8ed118b075f4fdef70437158e3fea917cf831666"`
[INFO] [stderr]     Checking lossyq v0.1.19
[INFO] [stderr]     Checking acto-rs v0.4.0
[INFO] [stderr]     Checking tcp-echo v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `channel_id`
[INFO] [stderr]   --> src/handle_parsed.rs:12:59
[INFO] [stderr]    |
[INFO] [stderr] 12 |     if let &mut ChannelWrapper::ConnectedReceiver(ref mut channel_id,
[INFO] [stderr]    |                                                           ^^^^^^^^^^ help: consider prefixing with an underscore: `_channel_id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `channel_id`
[INFO] [stderr]   --> src/handle_parsed.rs:12:59
[INFO] [stderr]    |
[INFO] [stderr] 12 |     if let &mut ChannelWrapper::ConnectedReceiver(ref mut channel_id,
[INFO] [stderr]    |                                                           ^^^^^^^^^^ help: consider prefixing with an underscore: `_channel_id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.19s
[INFO] running `"docker" "inspect" "3c58c8699a8f28c233baf9fd8ed118b075f4fdef70437158e3fea917cf831666"`
[INFO] running `"docker" "rm" "-f" "3c58c8699a8f28c233baf9fd8ed118b075f4fdef70437158e3fea917cf831666"`
[INFO] [stdout] 3c58c8699a8f28c233baf9fd8ed118b075f4fdef70437158e3fea917cf831666