[INFO] updating cached repository tawashichan/rust_practice
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tawashichan/rust_practice
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tawashichan/rust_practice" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tawashichan/rust_practice"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tawashichan/rust_practice'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tawashichan/rust_practice" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tawashichan/rust_practice"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tawashichan/rust_practice'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 992c5786d87cf1c4f63638deb3072ca615053dfe
[INFO] sha for GitHub repo tawashichan/rust_practice: 992c5786d87cf1c4f63638deb3072ca615053dfe
[INFO] validating manifest of tawashichan/rust_practice on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tawashichan/rust_practice on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tawashichan/rust_practice
[INFO] finished frobbing tawashichan/rust_practice
[INFO] frobbed toml for tawashichan/rust_practice written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tawashichan/rust_practice/Cargo.toml
[INFO] started frobbing tawashichan/rust_practice
[INFO] finished frobbing tawashichan/rust_practice
[INFO] frobbed toml for tawashichan/rust_practice written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tawashichan/rust_practice/Cargo.toml
[INFO] crate tawashichan/rust_practice already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tawashichan/rust_practice against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-4/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tawashichan/rust_practice:/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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bdb79c3c793189a402149895813d6d2d9d50e3812f38b77b03cbf9d00163889e
[INFO] running `"docker" "start" "-a" "bdb79c3c793189a402149895813d6d2d9d50e3812f38b77b03cbf9d00163889e"`
[INFO] [stderr]     Checking t_lib v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/main.rs:28:22
[INFO] [stderr]    |
[INFO] [stderr] 28 |                 Some(p) => {
[INFO] [stderr]    |                      ^ help: consider prefixing with an underscore: `_p`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from`
[INFO] [stderr]   --> src/main.rs:51:17
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn reachable<T>(from: &T, to: &T) -> bool {
[INFO] [stderr]    |                 ^^^^ help: consider prefixing with an underscore: `_from`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `to`
[INFO] [stderr]   --> src/main.rs:51:27
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn reachable<T>(from: &T, to: &T) -> bool {
[INFO] [stderr]    |                           ^^ help: consider prefixing with an underscore: `_to`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/main.rs:72:22
[INFO] [stderr]    |
[INFO] [stderr] 72 |                 Some(p) => continue,
[INFO] [stderr]    |                      ^ help: consider prefixing with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/main.rs:99:18
[INFO] [stderr]    |
[INFO] [stderr] 99 |             Some(p) => {
[INFO] [stderr]    |                  ^ help: consider prefixing with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]    --> src/main.rs:124:18
[INFO] [stderr]     |
[INFO] [stderr] 124 |             Some(p) => {
[INFO] [stderr]     |                  ^ help: consider prefixing with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bfs`
[INFO] [stderr]   --> src/main.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn bfs(start: usize, goal: usize, m: Vec<Vec<usize>>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `reachable`
[INFO] [stderr]   --> src/main.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn reachable<T>(from: &T, to: &T) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dfs`
[INFO] [stderr]   --> src/main.rs:94:1
[INFO] [stderr]    |
[INFO] [stderr] 94 | fn dfs(start: usize, goal: usize, current: usize, current_path: Vec<usize>, m: &Vec<Vec<usize>>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/main.rs:28:22
[INFO] [stderr]    |
[INFO] [stderr] 28 |                 Some(p) => {
[INFO] [stderr]    |                      ^ help: consider prefixing with an underscore: `_p`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from`
[INFO] [stderr]   --> src/main.rs:51:17
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn reachable<T>(from: &T, to: &T) -> bool {
[INFO] [stderr]    |                 ^^^^ help: consider prefixing with an underscore: `_from`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `to`
[INFO] [stderr]   --> src/main.rs:51:27
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn reachable<T>(from: &T, to: &T) -> bool {
[INFO] [stderr]    |                           ^^ help: consider prefixing with an underscore: `_to`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/main.rs:72:22
[INFO] [stderr]    |
[INFO] [stderr] 72 |                 Some(p) => continue,
[INFO] [stderr]    |                      ^ help: consider prefixing with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/main.rs:99:18
[INFO] [stderr]    |
[INFO] [stderr] 99 |             Some(p) => {
[INFO] [stderr]    |                  ^ help: consider prefixing with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]    --> src/main.rs:124:18
[INFO] [stderr]     |
[INFO] [stderr] 124 |             Some(p) => {
[INFO] [stderr]     |                  ^ help: consider prefixing with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bfs`
[INFO] [stderr]   --> src/main.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn bfs(start: usize, goal: usize, m: Vec<Vec<usize>>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `reachable`
[INFO] [stderr]   --> src/main.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn reachable<T>(from: &T, to: &T) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dfs`
[INFO] [stderr]   --> src/main.rs:94:1
[INFO] [stderr]    |
[INFO] [stderr] 94 | fn dfs(start: usize, goal: usize, current: usize, current_path: Vec<usize>, m: &Vec<Vec<usize>>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `"docker" "inspect" "bdb79c3c793189a402149895813d6d2d9d50e3812f38b77b03cbf9d00163889e"`
[INFO] running `"docker" "rm" "-f" "bdb79c3c793189a402149895813d6d2d9d50e3812f38b77b03cbf9d00163889e"`
[INFO] [stdout] bdb79c3c793189a402149895813d6d2d9d50e3812f38b77b03cbf9d00163889e