[INFO] updating cached repository ernsttm/mapping
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ernsttm/mapping
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ernsttm/mapping" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/ernsttm/mapping"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/ernsttm/mapping'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ernsttm/mapping" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/ernsttm/mapping"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/ernsttm/mapping'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fffe80200cc357b8d54303910248423cca45cedb
[INFO] sha for GitHub repo ernsttm/mapping: fffe80200cc357b8d54303910248423cca45cedb
[INFO] validating manifest of ernsttm/mapping 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 ernsttm/mapping 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 ernsttm/mapping
[INFO] finished frobbing ernsttm/mapping
[INFO] frobbed toml for ernsttm/mapping written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/ernsttm/mapping/Cargo.toml
[INFO] started frobbing ernsttm/mapping
[INFO] finished frobbing ernsttm/mapping
[INFO] frobbed toml for ernsttm/mapping written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/ernsttm/mapping/Cargo.toml
[INFO] crate ernsttm/mapping 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] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ernsttm/mapping against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-0/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/ernsttm/mapping:/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" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b7bffe7a202e0aaf19f755a50d28b20c9fd1668bf39c85c656e871e597ef1ad2
[INFO] running `"docker" "start" "-a" "b7bffe7a202e0aaf19f755a50d28b20c9fd1668bf39c85c656e871e597ef1ad2"`
[INFO] [stderr]     Checking mapping v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Tree`
[INFO] [stderr]   --> src/lib.rs:10:27
[INFO] [stderr]    |
[INFO] [stderr] 10 | use dag::{DAG, InputNode, Tree};
[INFO] [stderr]    |                           ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Tree`
[INFO] [stderr]   --> src/lib.rs:10:27
[INFO] [stderr]    |
[INFO] [stderr] 10 | use dag::{DAG, InputNode, Tree};
[INFO] [stderr]    |                           ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]   --> src/lib.rs:82:9
[INFO] [stderr]    |
[INFO] [stderr] 82 |     for index in 0..gate_number {
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_index`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]    --> src/lib.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 |     for index in 0..cell_number {
[INFO] [stderr]     |         ^^^^^ help: consider prefixing with an underscore: `_index`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]    --> src/lib.rs:151:9
[INFO] [stderr]     |
[INFO] [stderr] 151 |     for index in 0..node_num {
[INFO] [stderr]     |         ^^^^^ help: consider prefixing with an underscore: `_index`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/laydown_walker.rs:79:14
[INFO] [stderr]    |
[INFO] [stderr] 79 |         for (i, cell) in self.cells.iter().enumerate() {
[INFO] [stderr]    |              ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `inputs`
[INFO] [stderr]   --> src/dag.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn inputs(&self) -> &Vec<u32> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `inputs`
[INFO] [stderr]    --> src/dag.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn inputs(&self, node: u32) -> &Vec<u32> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `inputs`
[INFO] [stderr]   --> src/lib.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     inputs: u32,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]   --> src/lib.rs:82:9
[INFO] [stderr]    |
[INFO] [stderr] 82 |     for index in 0..gate_number {
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_index`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]    --> src/lib.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 |     for index in 0..cell_number {
[INFO] [stderr]     |         ^^^^^ help: consider prefixing with an underscore: `_index`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]    --> src/lib.rs:151:9
[INFO] [stderr]     |
[INFO] [stderr] 151 |     for index in 0..node_num {
[INFO] [stderr]     |         ^^^^^ help: consider prefixing with an underscore: `_index`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/laydown_walker.rs:79:14
[INFO] [stderr]    |
[INFO] [stderr] 79 |         for (i, cell) in self.cells.iter().enumerate() {
[INFO] [stderr]    |              ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `inputs`
[INFO] [stderr]   --> src/dag.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn inputs(&self) -> &Vec<u32> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `inputs`
[INFO] [stderr]    --> src/dag.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn inputs(&self, node: u32) -> &Vec<u32> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `inputs`
[INFO] [stderr]   --> src/lib.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     inputs: u32,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "b7bffe7a202e0aaf19f755a50d28b20c9fd1668bf39c85c656e871e597ef1ad2"`
[INFO] running `"docker" "rm" "-f" "b7bffe7a202e0aaf19f755a50d28b20c9fd1668bf39c85c656e871e597ef1ad2"`
[INFO] [stdout] b7bffe7a202e0aaf19f755a50d28b20c9fd1668bf39c85c656e871e597ef1ad2