[INFO] cloning repository AnthonyP4312/i3-alt-tab [INFO] running `"git" "clone" "--bare" "git://github.com/AnthonyP4312/i3-alt-tab.git" "work/cache/sources/gh/AnthonyP4312/i3-alt-tab"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/AnthonyP4312/i3-alt-tab'... [INFO] running `"git" "clone" "work/cache/sources/gh/AnthonyP4312/i3-alt-tab" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/AnthonyP4312/i3-alt-tab"` [INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/AnthonyP4312/i3-alt-tab'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/AnthonyP4312/i3-alt-tab" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/AnthonyP4312/i3-alt-tab"` [INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/AnthonyP4312/i3-alt-tab'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 64efd56944d26cce816fc0e4b7cefb9b5e201b0e [INFO] sha for GitHub repo AnthonyP4312/i3-alt-tab: 64efd56944d26cce816fc0e4b7cefb9b5e201b0e [INFO] validating manifest of AnthonyP4312/i3-alt-tab on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of AnthonyP4312/i3-alt-tab on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing AnthonyP4312/i3-alt-tab [INFO] finished frobbing AnthonyP4312/i3-alt-tab [INFO] frobbed toml for AnthonyP4312/i3-alt-tab written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/AnthonyP4312/i3-alt-tab/Cargo.toml [INFO] started frobbing AnthonyP4312/i3-alt-tab [INFO] finished frobbing AnthonyP4312/i3-alt-tab [INFO] frobbed toml for AnthonyP4312/i3-alt-tab written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/AnthonyP4312/i3-alt-tab/Cargo.toml [INFO] crate AnthonyP4312/i3-alt-tab has a lockfile. skipping [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking AnthonyP4312/i3-alt-tab against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-6/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/AnthonyP4312/i3-alt-tab:/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" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 14299d212b864358cfb69b832d875da1dd68f31e1800daa02f916a075fc73a76 [INFO] running `"docker" "start" "-a" "14299d212b864358cfb69b832d875da1dd68f31e1800daa02f916a075fc73a76"` [INFO] [stderr] Checking alt_tabber v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:39:5 [INFO] [stderr] | [INFO] [stderr] 39 | / Command::new("i3-msg") [INFO] [stderr] 40 | | .arg(format!("[con_id={}] focus", next.id)) [INFO] [stderr] 41 | | .output(); [INFO] [stderr] | |__________________^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused variable: `child_c` [INFO] [stderr] --> src/main.rs:85:13 [INFO] [stderr] | [INFO] [stderr] 85 | let child_c = Node { [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_child_c` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `node_with_children` [INFO] [stderr] --> src/main.rs:89:13 [INFO] [stderr] | [INFO] [stderr] 89 | let node_with_children = Node { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_node_with_children` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `setup` [INFO] [stderr] --> src/main.rs:67:5 [INFO] [stderr] | [INFO] [stderr] 67 | fn setup() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:39:5 [INFO] [stderr] | [INFO] [stderr] 39 | / Command::new("i3-msg") [INFO] [stderr] 40 | | .arg(format!("[con_id={}] focus", next.id)) [INFO] [stderr] 41 | | .output(); [INFO] [stderr] | |__________________^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.28s [INFO] running `"docker" "inspect" "14299d212b864358cfb69b832d875da1dd68f31e1800daa02f916a075fc73a76"` [INFO] running `"docker" "rm" "-f" "14299d212b864358cfb69b832d875da1dd68f31e1800daa02f916a075fc73a76"` [INFO] [stdout] 14299d212b864358cfb69b832d875da1dd68f31e1800daa02f916a075fc73a76