[INFO] cloning repository https://github.com/saik0/rust_boggle_solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/saik0/rust_boggle_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaik0%2Frust_boggle_solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaik0%2Frust_boggle_solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5d4602cdfe585c83c836f045adc675e23f9a6e37
[INFO] testing saik0/rust_boggle_solver against 1.76.0 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaik0%2Frust_boggle_solver" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/saik0/rust_boggle_solver on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/saik0/rust_boggle_solver
[INFO] finished tweaking git repo https://github.com/saik0/rust_boggle_solver
[INFO] tweaked toml for git repo https://github.com/saik0/rust_boggle_solver written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/saik0/rust_boggle_solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52eb6db8ba3e5c79f9cfe1845c44293047cf1923ef34f028b46ccfd2feae325b
[INFO] running `Command { std: "docker" "start" "-a" "52eb6db8ba3e5c79f9cfe1845c44293047cf1923ef34f028b46ccfd2feae325b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52eb6db8ba3e5c79f9cfe1845c44293047cf1923ef34f028b46ccfd2feae325b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52eb6db8ba3e5c79f9cfe1845c44293047cf1923ef34f028b46ccfd2feae325b", kill_on_drop: false }`
[INFO] [stdout] 52eb6db8ba3e5c79f9cfe1845c44293047cf1923ef34f028b46ccfd2feae325b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12409c7deb412ad6663a5f1f8d193c084c8162854582ee7a58deb06ad7501533
[INFO] running `Command { std: "docker" "start" "-a" "12409c7deb412ad6663a5f1f8d193c084c8162854582ee7a58deb06ad7501533", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.21
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling num_cpus v1.3.0
[INFO] [stderr]    Compiling deque v0.3.1
[INFO] [stderr]    Compiling rayon v0.6.0
[INFO] [stderr]    Compiling rust_boggle_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/boggle_util.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |         'a' ... 'z' => true,
[INFO] [stdout]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/boggle_util.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         'A' ... 'Z' => true,
[INFO] [stdout]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/boggle/radix_board.rs:66:26
[INFO] [stdout]    |
[INFO] [stdout] 66 |             alpha = mem::uninitialized();
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/boggle/mod.rs:38:33
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn any(&self, v: u8) -> Box<Iterator<Item=usize>>;
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn any(&self, v: u8) -> Box<dyn Iterator<Item=usize>>;
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/boggle/mod.rs:39:49
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn neighbors(&self, i: usize, v: u8) -> Box<Iterator<Item=usize>>;
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn neighbors(&self, i: usize, v: u8) -> Box<dyn Iterator<Item=usize>>;
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/trie.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             mem::replace(&mut (self.children[first]), Some(Box::new(Trie::new())));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 82 |             let _ = mem::replace(&mut (self.children[first]), Some(Box::new(Trie::new())));
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[bitset::bitset::BitSet; 26]` does not permit being left uninitialized
[INFO] [stdout]   --> src/boggle/radix_board.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |             alpha = mem::uninitialized();
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     this code causes undefined behavior when executed
[INFO] [stdout]    |                     help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout] note: `alloc::raw_vec::RawVec<u64>` must be initialized inside its custom valid range (in this struct field)
[INFO] [stdout]   --> src/bitset/bitset.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     data: Vec<u64>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `std::ptr::Unique<u64>` must be non-null
[INFO] [stdout]    = note: because `std::ptr::NonNull<u64>` must be non-null
[INFO] [stdout]    = note: raw pointers must be initialized
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `Command { std: "docker" "inspect" "12409c7deb412ad6663a5f1f8d193c084c8162854582ee7a58deb06ad7501533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12409c7deb412ad6663a5f1f8d193c084c8162854582ee7a58deb06ad7501533", kill_on_drop: false }`
[INFO] [stdout] 12409c7deb412ad6663a5f1f8d193c084c8162854582ee7a58deb06ad7501533
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec3bd709cca95ccf87ff57d6f7859f93f7cf67f135249225214da54a5c787618
[INFO] running `Command { std: "docker" "start" "-a" "ec3bd709cca95ccf87ff57d6f7859f93f7cf67f135249225214da54a5c787618", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_boggle_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/boggle_util.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |         'a' ... 'z' => true,
[INFO] [stdout]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/boggle_util.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         'A' ... 'Z' => true,
[INFO] [stdout]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/boggle/radix_board.rs:66:26
[INFO] [stdout]    |
[INFO] [stdout] 66 |             alpha = mem::uninitialized();
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/boggle/mod.rs:38:33
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn any(&self, v: u8) -> Box<Iterator<Item=usize>>;
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn any(&self, v: u8) -> Box<dyn Iterator<Item=usize>>;
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/boggle/mod.rs:39:49
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn neighbors(&self, i: usize, v: u8) -> Box<Iterator<Item=usize>>;
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn neighbors(&self, i: usize, v: u8) -> Box<dyn Iterator<Item=usize>>;
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/trie.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             mem::replace(&mut (self.children[first]), Some(Box::new(Trie::new())));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 82 |             let _ = mem::replace(&mut (self.children[first]), Some(Box::new(Trie::new())));
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[bitset::bitset::BitSet; 26]` does not permit being left uninitialized
[INFO] [stdout]   --> src/boggle/radix_board.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |             alpha = mem::uninitialized();
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     this code causes undefined behavior when executed
[INFO] [stdout]    |                     help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout] note: `alloc::raw_vec::RawVec<u64>` must be initialized inside its custom valid range (in this struct field)
[INFO] [stdout]   --> src/bitset/bitset.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     data: Vec<u64>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `std::ptr::Unique<u64>` must be non-null
[INFO] [stdout]    = note: because `std::ptr::NonNull<u64>` must be non-null
[INFO] [stdout]    = note: raw pointers must be initialized
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "ec3bd709cca95ccf87ff57d6f7859f93f7cf67f135249225214da54a5c787618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec3bd709cca95ccf87ff57d6f7859f93f7cf67f135249225214da54a5c787618", kill_on_drop: false }`
[INFO] [stdout] ec3bd709cca95ccf87ff57d6f7859f93f7cf67f135249225214da54a5c787618
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 49f7d72688c5e7af6b2481b3884f2657e2a783722344d59521f83494712c9900
[INFO] running `Command { std: "docker" "start" "-a" "49f7d72688c5e7af6b2481b3884f2657e2a783722344d59521f83494712c9900", kill_on_drop: false }`
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/boggle_util.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |         'a' ... 'z' => true,
[INFO] [stderr]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/boggle_util.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         'A' ... 'Z' => true,
[INFO] [stderr]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/boggle/radix_board.rs:66:26
[INFO] [stderr]    |
[INFO] [stderr] 66 |             alpha = mem::uninitialized();
[INFO] [stderr]    |                          ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/boggle/mod.rs:38:33
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn any(&self, v: u8) -> Box<Iterator<Item=usize>>;
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn any(&self, v: u8) -> Box<dyn Iterator<Item=usize>>;
[INFO] [stderr]    |                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/boggle/mod.rs:39:49
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn neighbors(&self, i: usize, v: u8) -> Box<Iterator<Item=usize>>;
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn neighbors(&self, i: usize, v: u8) -> Box<dyn Iterator<Item=usize>>;
[INFO] [stderr]    |                                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/trie.rs:82:13
[INFO] [stderr]    |
[INFO] [stderr] 82 |             mem::replace(&mut (self.children[first]), Some(Box::new(Trie::new())));
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 82 |             let _ = mem::replace(&mut (self.children[first]), Some(Box::new(Trie::new())));
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: the type `[bitset::bitset::BitSet; 26]` does not permit being left uninitialized
[INFO] [stderr]   --> src/boggle/radix_board.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |             alpha = mem::uninitialized();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     this code causes undefined behavior when executed
[INFO] [stderr]    |                     help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr] note: `alloc::raw_vec::RawVec<u64>` must be initialized inside its custom valid range (in this struct field)
[INFO] [stderr]   --> src/bitset/bitset.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     data: Vec<u64>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    = note: `std::ptr::Unique<u64>` must be non-null
[INFO] [stderr]    = note: because `std::ptr::NonNull<u64>` must be non-null
[INFO] [stderr]    = note: raw pointers must be initialized
[INFO] [stderr]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_boggle_solver` (bin "rust_boggle_solver" test) generated 7 warnings (run `cargo fix --bin "rust_boggle_solver" --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_boggle_solver-e8d48223e452a7e0)
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test bitset::bitset::test::can_add ... ok
[INFO] [stdout] test bitset::bitset::test::len_is_correct ... ok
[INFO] [stdout] test bitset::bitset::test::can_iter_indices ... ok
[INFO] [stdout] test bitset::bitset_32::test::can_add ... ok
[INFO] [stdout] test bitset::bitset::test::can_remove ... ok
[INFO] [stdout] test bitset::bitset_32::test::can_iter ... ok
[INFO] [stdout] test bitset::bitset_32::test::can_iter_ones ... ok
[INFO] [stdout] test bitset::bitset_32::test::can_remove ... ok
[INFO] [stdout] test bitset::bitset_32::test::cardinality_is_correct ... ok
[INFO] [stdout] test bitset::bitset_32::test::format_is_correct ... ok
[INFO] [stderr] error: test failed, to rerun pass `--bin rust_boggle_solver`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/rust_boggle_solver-e8d48223e452a7e0` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "49f7d72688c5e7af6b2481b3884f2657e2a783722344d59521f83494712c9900", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49f7d72688c5e7af6b2481b3884f2657e2a783722344d59521f83494712c9900", kill_on_drop: false }`
[INFO] [stdout] 49f7d72688c5e7af6b2481b3884f2657e2a783722344d59521f83494712c9900
