[INFO] fetching crate nonogrid 0.7.3...
[INFO] building nonogrid-0.7.3 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate nonogrid 0.7.3 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate nonogrid 0.7.3
[INFO] finished tweaking crates.io crate nonogrid 0.7.3
[INFO] tweaked toml for crates.io crate nonogrid 0.7.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate nonogrid 0.7.3 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nonogrid 0.7.3 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a6394c943037070dcef1edf26ba6de45001b2c44370721e08aeaa80de0d465c
[INFO] running `Command { std: "docker" "start" "-a" "2a6394c943037070dcef1edf26ba6de45001b2c44370721e08aeaa80de0d465c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a6394c943037070dcef1edf26ba6de45001b2c44370721e08aeaa80de0d465c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a6394c943037070dcef1edf26ba6de45001b2c44370721e08aeaa80de0d465c", kill_on_drop: false }`
[INFO] [stdout] 2a6394c943037070dcef1edf26ba6de45001b2c44370721e08aeaa80de0d465c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa47c6a6510e12f1f7a70881280da51304fa1c519e81cbdbeb042be77d235e92
[INFO] running `Command { std: "docker" "start" "-a" "aa47c6a6510e12f1f7a70881280da51304fa1c519e81cbdbeb042be77d235e92", kill_on_drop: false }`
[INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition
[INFO] [stderr] (in the `env_logger` dependency)
[INFO] [stderr]    Compiling libc v0.2.106
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling crunchy v0.2.2
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[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling autocfg v0.1.7
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[INFO] [stderr]    Compiling smallvec v1.7.0
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[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling env_logger v0.7.1
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[INFO] [stderr]    Compiling const-random v0.1.13
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[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling nonogrid v0.7.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `box_pointers` has been removed: it does not detect other kinds of allocations, and existed only for historical reasons
[INFO] [stdout]   --> src/lib.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![allow(box_pointers)]
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `indirect_structural_match` has been removed: converted into hard error, see RFC #3535 <https://rust-lang.github.io/rfcs/3535-constants-in-patterns.html> for more information
[INFO] [stdout]   --> src/lib.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![warn(indirect_structural_match)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `pointer_structural_match` has been removed: converted into hard error, see RFC #3535 <https://rust-lang.github.io/rfcs/3535-constants-in-patterns.html> for more information
[INFO] [stdout]   --> src/lib.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | #![warn(pointer_structural_match)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `unaligned_references` has been removed: converted into hard error, see issue #82523 <https://github.com/rust-lang/rust/issues/82523> for more information
[INFO] [stdout]   --> src/lib.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 | #![warn(unaligned_references)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `cache_remove` and `cache_clear` are never used
[INFO] [stdout]   --> src/cache.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub trait Cached<K, V> {
[INFO] [stdout]    |           ------ methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn cache_remove(&mut self, k: &K) -> Option<V>;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 11 |     fn cache_clear(&mut self);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Stripper` is never used
[INFO] [stdout]    --> src/utils.rs:265:11
[INFO] [stdout]     |
[INFO] [stdout] 265 | pub trait Stripper<P> {
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `cache_remove` and `cache_clear` are never used
[INFO] [stdout]   --> src/cache.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub trait Cached<K, V> {
[INFO] [stdout]    |           ------ methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn cache_remove(&mut self, k: &K) -> Option<V>;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 11 |     fn cache_clear(&mut self);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser.rs:22:23
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct ParseError(pub String);
[INFO] [stdout]    |            ---------- ^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `ParseError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse_rc` is never used
[INFO] [stdout]   --> src/parser.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub trait BoardParser: fmt::Debug {
[INFO] [stdout]    |           ----------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn parse_rc<B>(&self) -> MutRc<Board<B>>
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `LocalReader` is never used
[INFO] [stdout]   --> src/parser.rs:49:11
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub trait LocalReader: BoardParser {
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Stripper` is never used
[INFO] [stdout]    --> src/utils.rs:265:11
[INFO] [stdout]     |
[INFO] [stdout] 265 | pub trait Stripper<P> {
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.27s
[INFO] running `Command { std: "docker" "inspect" "aa47c6a6510e12f1f7a70881280da51304fa1c519e81cbdbeb042be77d235e92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa47c6a6510e12f1f7a70881280da51304fa1c519e81cbdbeb042be77d235e92", kill_on_drop: false }`
[INFO] [stdout] aa47c6a6510e12f1f7a70881280da51304fa1c519e81cbdbeb042be77d235e92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96f572e8cf0cce7b74ce940a69d735270afd8cb20d118ca190daaac1db65f85e
[INFO] running `Command { std: "docker" "start" "-a" "96f572e8cf0cce7b74ce940a69d735270afd8cb20d118ca190daaac1db65f85e", kill_on_drop: false }`
[INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition
[INFO] [stderr] (in the `env_logger` dependency)
[INFO] [stdout] warning: lint `box_pointers` has been removed: it does not detect other kinds of allocations, and existed only for historical reasons
[INFO] [stdout]   --> src/lib.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![allow(box_pointers)]
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `indirect_structural_match` has been removed: converted into hard error, see RFC #3535 <https://rust-lang.github.io/rfcs/3535-constants-in-patterns.html> for more information
[INFO] [stdout]   --> src/lib.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![warn(indirect_structural_match)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `pointer_structural_match` has been removed: converted into hard error, see RFC #3535 <https://rust-lang.github.io/rfcs/3535-constants-in-patterns.html> for more information
[INFO] [stdout]   --> src/lib.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | #![warn(pointer_structural_match)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling nonogrid v0.7.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `unaligned_references` has been removed: converted into hard error, see issue #82523 <https://github.com/rust-lang/rust/issues/82523> for more information
[INFO] [stdout]   --> src/lib.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 | #![warn(unaligned_references)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `cache_remove` and `cache_clear` are never used
[INFO] [stdout]   --> src/cache.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub trait Cached<K, V> {
[INFO] [stdout]    |           ------ methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn cache_remove(&mut self, k: &K) -> Option<V>;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 11 |     fn cache_clear(&mut self);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Stripper` is never used
[INFO] [stdout]    --> src/utils.rs:265:11
[INFO] [stdout]     |
[INFO] [stdout] 265 | pub trait Stripper<P> {
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `cache_remove` and `cache_clear` are never used
[INFO] [stdout]   --> src/cache.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub trait Cached<K, V> {
[INFO] [stdout]    |           ------ methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn cache_remove(&mut self, k: &K) -> Option<V>;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 11 |     fn cache_clear(&mut self);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser.rs:22:23
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct ParseError(pub String);
[INFO] [stdout]    |            ---------- ^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `ParseError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse_rc` is never used
[INFO] [stdout]   --> src/parser.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub trait BoardParser: fmt::Debug {
[INFO] [stdout]    |           ----------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn parse_rc<B>(&self) -> MutRc<Board<B>>
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `LocalReader` is never used
[INFO] [stdout]   --> src/parser.rs:49:11
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub trait LocalReader: BoardParser {
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Stripper` is never used
[INFO] [stdout]    --> src/utils.rs:265:11
[INFO] [stdout]     |
[INFO] [stdout] 265 | pub trait Stripper<P> {
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated module `std::intrinsics`: import this function via `std::ptr` instead
[INFO] [stdout]    --> examples/spoj/main.rs:189:30
[INFO] [stdout]     |
[INFO] [stdout] 189 |         use std::intrinsics::copy_nonoverlapping;
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `box_pointers` has been removed: it does not detect other kinds of allocations, and existed only for historical reasons
[INFO] [stdout]   --> src/lib.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![allow(box_pointers)]
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `indirect_structural_match` has been removed: converted into hard error, see RFC #3535 <https://rust-lang.github.io/rfcs/3535-constants-in-patterns.html> for more information
[INFO] [stdout]   --> src/lib.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![warn(indirect_structural_match)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `pointer_structural_match` has been removed: converted into hard error, see RFC #3535 <https://rust-lang.github.io/rfcs/3535-constants-in-patterns.html> for more information
[INFO] [stdout]   --> src/lib.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | #![warn(pointer_structural_match)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `unaligned_references` has been removed: converted into hard error, see issue #82523 <https://github.com/rust-lang/rust/issues/82523> for more information
[INFO] [stdout]   --> src/lib.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 | #![warn(unaligned_references)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> examples/spoj/main.rs:460:18
[INFO] [stdout]     |
[INFO] [stdout] 460 |     fn iter_rows(&self) -> Chunks<BW> {
[INFO] [stdout]     |                  ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 460 |     fn iter_rows(&self) -> Chunks<'_, BW> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> examples/spoj/main.rs:968:18
[INFO] [stdout]     |
[INFO] [stdout] 968 |         fn board(&self) -> BoardRef {
[INFO] [stdout]     |                  ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 968 |         fn board(&self) -> BoardRef<'_> {
[INFO] [stdout]     |                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> examples/spoj/main.rs:1274:18
[INFO] [stdout]      |
[INFO] [stdout] 1274 |         fn board(&self) -> BoardRef {
[INFO] [stdout]      |                  ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]      |                  |
[INFO] [stdout]      |                  the lifetime is elided here
[INFO] [stdout]      |
[INFO] [stdout]      = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]      |
[INFO] [stdout] 1274 |         fn board(&self) -> BoardRef<'_> {
[INFO] [stdout]      |                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> examples/spoj/main.rs:1361:18
[INFO] [stdout]      |
[INFO] [stdout] 1361 |         fn board(&self) -> BoardRef {
[INFO] [stdout]      |                  ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]      |                  |
[INFO] [stdout]      |                  the lifetime is elided here
[INFO] [stdout]      |
[INFO] [stdout]      = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]      |
[INFO] [stdout] 1361 |         fn board(&self) -> BoardRef<'_> {
[INFO] [stdout]      |                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `cache_remove` and `cache_clear` are never used
[INFO] [stdout]   --> src/cache.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub trait Cached<K, V> {
[INFO] [stdout]    |           ------ methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn cache_remove(&mut self, k: &K) -> Option<V>;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 11 |     fn cache_clear(&mut self);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser.rs:22:23
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct ParseError(pub String);
[INFO] [stdout]    |            ---------- ^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `ParseError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse_rc` is never used
[INFO] [stdout]   --> src/parser.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub trait BoardParser: fmt::Debug {
[INFO] [stdout]    |           ----------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn parse_rc<B>(&self) -> MutRc<Board<B>>
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `LocalReader` is never used
[INFO] [stdout]   --> src/parser.rs:49:11
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub trait LocalReader: BoardParser {
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Stripper` is never used
[INFO] [stdout]    --> src/utils.rs:265:11
[INFO] [stdout]     |
[INFO] [stdout] 265 | pub trait Stripper<P> {
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `cache_remove` and `cache_clear` are never used
[INFO] [stdout]   --> src/cache.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub trait Cached<K, V> {
[INFO] [stdout]    |           ------ methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn cache_remove(&mut self, k: &K) -> Option<V>;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 11 |     fn cache_clear(&mut self);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Stripper` is never used
[INFO] [stdout]    --> src/utils.rs:265:11
[INFO] [stdout]     |
[INFO] [stdout] 265 | pub trait Stripper<P> {
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 6.46s
[INFO] running `Command { std: "docker" "inspect" "96f572e8cf0cce7b74ce940a69d735270afd8cb20d118ca190daaac1db65f85e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96f572e8cf0cce7b74ce940a69d735270afd8cb20d118ca190daaac1db65f85e", kill_on_drop: false }`
[INFO] [stdout] 96f572e8cf0cce7b74ce940a69d735270afd8cb20d118ca190daaac1db65f85e
