[INFO] cloning repository tlrobrn/r-maze
[INFO] running `"git" "clone" "--bare" "git://github.com/tlrobrn/r-maze.git" "work/cache/sources/gh/tlrobrn/r-maze"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/tlrobrn/r-maze'...
[INFO] running `"git" "clone" "work/cache/sources/gh/tlrobrn/r-maze" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/tlrobrn/r-maze"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/tlrobrn/r-maze'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tlrobrn/r-maze" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/tlrobrn/r-maze"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/tlrobrn/r-maze'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cff6682df762a4a2143edf0db19359674579793a
[INFO] sha for GitHub repo tlrobrn/r-maze: cff6682df762a4a2143edf0db19359674579793a
[INFO] validating manifest of tlrobrn/r-maze on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tlrobrn/r-maze on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tlrobrn/r-maze
[INFO] finished frobbing tlrobrn/r-maze
[INFO] frobbed toml for tlrobrn/r-maze written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/tlrobrn/r-maze/Cargo.toml
[INFO] started frobbing tlrobrn/r-maze
[INFO] finished frobbing tlrobrn/r-maze
[INFO] frobbed toml for tlrobrn/r-maze written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/tlrobrn/r-maze/Cargo.toml
[INFO] crate tlrobrn/r-maze already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating git repository `https://github.com/tlrobrn/r-dsets`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/tlrobrn/r-maze/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/tlrobrn/r-dsets`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/tlrobrn/r-dsets`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] testing tlrobrn/r-maze against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/tlrobrn/r-maze:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 4dc70f10feb4753f8123f78ec644a15068a07aec36e5fa0003df75a7b9111343
[INFO] running `"docker" "start" "-a" "4dc70f10feb4753f8123f78ec644a15068a07aec36e5fa0003df75a7b9111343"`
[INFO] [stderr] warning: dependency (rand) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: unused manifest key: dependencies.rand.rand
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling disjoint_sets v0.0.2 (https://github.com/tlrobrn/r-dsets#fd0a8512)
[INFO] [stderr]    Compiling r-maze v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'maze::rand::Rng::shuffle': use SliceRandom::shuffle instead
[INFO] [stderr]   --> src/maze.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 |         rng.shuffle(&mut east);
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'maze::rand::Rng::shuffle': use SliceRandom::shuffle instead
[INFO] [stderr]   --> src/maze.rs:60:13
[INFO] [stderr]    |
[INFO] [stderr] 60 |         rng.shuffle(&mut south);
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/maze.rs:65:28
[INFO] [stderr]    |
[INFO] [stderr] 65 |     fn try_wall(&mut self, mut dsets: &mut DisjointSets, index: usize, is_east: bool) {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 2.22s
[INFO] running `"docker" "inspect" "4dc70f10feb4753f8123f78ec644a15068a07aec36e5fa0003df75a7b9111343"`
[INFO] running `"docker" "rm" "-f" "4dc70f10feb4753f8123f78ec644a15068a07aec36e5fa0003df75a7b9111343"`
[INFO] [stdout] 4dc70f10feb4753f8123f78ec644a15068a07aec36e5fa0003df75a7b9111343
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/tlrobrn/r-maze:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8552f8b336f029c4fa812c957f96abd6fe3ef98ff6aef4caa6fec4505b5b52d7
[INFO] running `"docker" "start" "-a" "8552f8b336f029c4fa812c957f96abd6fe3ef98ff6aef4caa6fec4505b5b52d7"`
[INFO] [stderr] warning: dependency (rand) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: unused manifest key: dependencies.rand.rand
[INFO] [stderr]    Compiling r-maze v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'maze::rand::Rng::shuffle': use SliceRandom::shuffle instead
[INFO] [stderr]   --> src/maze.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 |         rng.shuffle(&mut east);
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'maze::rand::Rng::shuffle': use SliceRandom::shuffle instead
[INFO] [stderr]   --> src/maze.rs:60:13
[INFO] [stderr]    |
[INFO] [stderr] 60 |         rng.shuffle(&mut south);
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/maze.rs:65:28
[INFO] [stderr]    |
[INFO] [stderr] 65 |     fn try_wall(&mut self, mut dsets: &mut DisjointSets, index: usize, is_east: bool) {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `"docker" "inspect" "8552f8b336f029c4fa812c957f96abd6fe3ef98ff6aef4caa6fec4505b5b52d7"`
[INFO] running `"docker" "rm" "-f" "8552f8b336f029c4fa812c957f96abd6fe3ef98ff6aef4caa6fec4505b5b52d7"`
[INFO] [stdout] 8552f8b336f029c4fa812c957f96abd6fe3ef98ff6aef4caa6fec4505b5b52d7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/tlrobrn/r-maze:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"`
[INFO] [stdout] 992707e51bd309463d16851463ac01ca24cfc5cd7509672dc9b8a8e2255d9f31
[INFO] running `"docker" "start" "-a" "992707e51bd309463d16851463ac01ca24cfc5cd7509672dc9b8a8e2255d9f31"`
[INFO] [stderr] warning: dependency (rand) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: unused manifest key: dependencies.rand.rand
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/r_maze-aa7a3dcc743430a6
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "992707e51bd309463d16851463ac01ca24cfc5cd7509672dc9b8a8e2255d9f31"`
[INFO] running `"docker" "rm" "-f" "992707e51bd309463d16851463ac01ca24cfc5cd7509672dc9b8a8e2255d9f31"`
[INFO] [stdout] 992707e51bd309463d16851463ac01ca24cfc5cd7509672dc9b8a8e2255d9f31