[INFO] fetching crate game_kernel_utils 0.1.0...
[INFO] testing game_kernel_utils-0.1.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate game_kernel_utils 0.1.0 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate game_kernel_utils 0.1.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate game_kernel_utils 0.1.0
[INFO] finished tweaking crates.io crate game_kernel_utils 0.1.0
[INFO] tweaked toml for crates.io crate game_kernel_utils 0.1.0 written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4c862588b4a852b895fb5405a57819d3d85eb2907dca115314726d9a71e957c
[INFO] running `Command { std: "docker" "start" "-a" "e4c862588b4a852b895fb5405a57819d3d85eb2907dca115314726d9a71e957c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4c862588b4a852b895fb5405a57819d3d85eb2907dca115314726d9a71e957c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4c862588b4a852b895fb5405a57819d3d85eb2907dca115314726d9a71e957c", kill_on_drop: false }`
[INFO] [stdout] e4c862588b4a852b895fb5405a57819d3d85eb2907dca115314726d9a71e957c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 075adf1bce89e46ec2f2c50dbfd4b55a32cd80d6ce2305d119aad595de4a467d
[INFO] running `Command { std: "docker" "start" "-a" "075adf1bce89e46ec2f2c50dbfd4b55a32cd80d6ce2305d119aad595de4a467d", kill_on_drop: false }`
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling hashbag v0.1.4
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling owning_ref v0.4.1
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling evmap v10.0.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling cgmath v0.17.0
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling game_kernel_utils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self::evmap::ShallowCopy`
[INFO] [stdout]  --> src/hierarchy.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use self::evmap::ShallowCopy;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/hierarchy.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |         pre_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 116 -         pre_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout] 116 +         pre_op: Option<&dyn Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/hierarchy.rs:117:26
[INFO] [stdout]     |
[INFO] [stdout] 117 |         post_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 117 -         post_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout] 117 +         post_op: Option<&dyn Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/hierarchy.rs:149:22
[INFO] [stdout]     |
[INFO] [stdout] 149 |         on_removed: &Fn(&Keytype),
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 149 -         on_removed: &Fn(&Keytype),
[INFO] [stdout] 149 +         on_removed: &dyn Fn(&Keytype),
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hierarchy.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let (r, mut w) = evmap::new();
[INFO] [stdout]    |                 ----^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/lib.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 | /     fn get<Q: Sized>(&self, k: &Q) -> Option<&V>
[INFO] [stdout] 83 | |     where
[INFO] [stdout] 84 | |         Self: Sized,
[INFO] [stdout] 85 | |     {
[INFO] [stdout] 86 | |         self.get(k)
[INFO] [stdout]    | |         ----------- recursive call site
[INFO] [stdout] 87 | |     }
[INFO] [stdout]    | |_____^ cannot return without recursing
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/lib.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 | /     fn get_mut<Q: Sized>(&mut self, k: &Q) -> Option<&mut V>
[INFO] [stdout] 90 | |     where
[INFO] [stdout] 91 | |         Self: Sized,
[INFO] [stdout] 92 | |     {
[INFO] [stdout] 93 | |         self.get_mut(k)
[INFO] [stdout]    | |         --------------- recursive call site
[INFO] [stdout] 94 | |     }
[INFO] [stdout]    | |_____^ cannot return without recursing
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `current_index`
[INFO] [stdout]   --> src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     current_index: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/hierarchy.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |             recursive_op(hierarchy, child, pre_op, post_op);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.27s
[INFO] running `Command { std: "docker" "inspect" "075adf1bce89e46ec2f2c50dbfd4b55a32cd80d6ce2305d119aad595de4a467d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "075adf1bce89e46ec2f2c50dbfd4b55a32cd80d6ce2305d119aad595de4a467d", kill_on_drop: false }`
[INFO] [stdout] 075adf1bce89e46ec2f2c50dbfd4b55a32cd80d6ce2305d119aad595de4a467d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40a88659998f854db8cd51cb0bd9c1b1813ebd853e8d85dc01139301121a623b
[INFO] running `Command { std: "docker" "start" "-a" "40a88659998f854db8cd51cb0bd9c1b1813ebd853e8d85dc01139301121a623b", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `self::evmap::ShallowCopy`
[INFO] [stdout]  --> src/hierarchy.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use self::evmap::ShallowCopy;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/hierarchy.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |         pre_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 116 -         pre_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout] 116 +         pre_op: Option<&dyn Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/hierarchy.rs:117:26
[INFO] [stdout]     |
[INFO] [stdout] 117 |         post_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 117 -         post_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout] 117 +         post_op: Option<&dyn Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/hierarchy.rs:149:22
[INFO] [stdout]     |
[INFO] [stdout] 149 |         on_removed: &Fn(&Keytype),
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 149 -         on_removed: &Fn(&Keytype),
[INFO] [stdout] 149 +         on_removed: &dyn Fn(&Keytype),
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hierarchy.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let (r, mut w) = evmap::new();
[INFO] [stdout]    |                 ----^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling game_kernel_utils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/lib.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 | /     fn get<Q: Sized>(&self, k: &Q) -> Option<&V>
[INFO] [stdout] 83 | |     where
[INFO] [stdout] 84 | |         Self: Sized,
[INFO] [stdout] 85 | |     {
[INFO] [stdout] 86 | |         self.get(k)
[INFO] [stdout]    | |         ----------- recursive call site
[INFO] [stdout] 87 | |     }
[INFO] [stdout]    | |_____^ cannot return without recursing
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/lib.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 | /     fn get_mut<Q: Sized>(&mut self, k: &Q) -> Option<&mut V>
[INFO] [stdout] 90 | |     where
[INFO] [stdout] 91 | |         Self: Sized,
[INFO] [stdout] 92 | |     {
[INFO] [stdout] 93 | |         self.get_mut(k)
[INFO] [stdout]    | |         --------------- recursive call site
[INFO] [stdout] 94 | |     }
[INFO] [stdout]    | |_____^ cannot return without recursing
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `current_index`
[INFO] [stdout]   --> src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     current_index: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/hierarchy.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |             recursive_op(hierarchy, child, pre_op, post_op);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::evmap::ShallowCopy`
[INFO] [stdout]  --> src/hierarchy.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use self::evmap::ShallowCopy;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/hierarchy.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |         pre_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 116 -         pre_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout] 116 +         pre_op: Option<&dyn Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/hierarchy.rs:117:26
[INFO] [stdout]     |
[INFO] [stdout] 117 |         post_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 117 -         post_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout] 117 +         post_op: Option<&dyn Fn(&Keytype) -> Result<(), E>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/hierarchy.rs:149:22
[INFO] [stdout]     |
[INFO] [stdout] 149 |         on_removed: &Fn(&Keytype),
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 149 -         on_removed: &Fn(&Keytype),
[INFO] [stdout] 149 +         on_removed: &dyn Fn(&Keytype),
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hierarchy.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let (r, mut w) = evmap::new();
[INFO] [stdout]    |                 ----^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/lib.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 | /     fn get<Q: Sized>(&self, k: &Q) -> Option<&V>
[INFO] [stdout] 83 | |     where
[INFO] [stdout] 84 | |         Self: Sized,
[INFO] [stdout] 85 | |     {
[INFO] [stdout] 86 | |         self.get(k)
[INFO] [stdout]    | |         ----------- recursive call site
[INFO] [stdout] 87 | |     }
[INFO] [stdout]    | |_____^ cannot return without recursing
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/lib.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 | /     fn get_mut<Q: Sized>(&mut self, k: &Q) -> Option<&mut V>
[INFO] [stdout] 90 | |     where
[INFO] [stdout] 91 | |         Self: Sized,
[INFO] [stdout] 92 | |     {
[INFO] [stdout] 93 | |         self.get_mut(k)
[INFO] [stdout]    | |         --------------- recursive call site
[INFO] [stdout] 94 | |     }
[INFO] [stdout]    | |_____^ cannot return without recursing
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `current_index`
[INFO] [stdout]   --> src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     current_index: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/hierarchy.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |             recursive_op(hierarchy, child, pre_op, post_op);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "40a88659998f854db8cd51cb0bd9c1b1813ebd853e8d85dc01139301121a623b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40a88659998f854db8cd51cb0bd9c1b1813ebd853e8d85dc01139301121a623b", kill_on_drop: false }`
[INFO] [stdout] 40a88659998f854db8cd51cb0bd9c1b1813ebd853e8d85dc01139301121a623b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cf4164358e4101184053d74d5f3022e9f7306efb84f0c97877f0db552546955e
[INFO] running `Command { std: "docker" "start" "-a" "cf4164358e4101184053d74d5f3022e9f7306efb84f0c97877f0db552546955e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `self::evmap::ShallowCopy`
[INFO] [stderr]  --> src/hierarchy.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use self::evmap::ShallowCopy;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/hierarchy.rs:116:25
[INFO] [stderr]     |
[INFO] [stderr] 116 |         pre_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 116 -         pre_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stderr] 116 +         pre_op: Option<&dyn Fn(&Keytype) -> Result<(), E>>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/hierarchy.rs:117:26
[INFO] [stderr]     |
[INFO] [stderr] 117 |         post_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 117 -         post_op: Option<&Fn(&Keytype) -> Result<(), E>>,
[INFO] [stderr] 117 +         post_op: Option<&dyn Fn(&Keytype) -> Result<(), E>>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/hierarchy.rs:149:22
[INFO] [stderr]     |
[INFO] [stderr] 149 |         on_removed: &Fn(&Keytype),
[INFO] [stderr]     |                      ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 149 -         on_removed: &Fn(&Keytype),
[INFO] [stderr] 149 +         on_removed: &dyn Fn(&Keytype),
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/hierarchy.rs:32:17
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let (r, mut w) = evmap::new();
[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] warning: function cannot return without recursing
[INFO] [stderr]   --> src/lib.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 | /     fn get<Q: Sized>(&self, k: &Q) -> Option<&V>
[INFO] [stderr] 83 | |     where
[INFO] [stderr] 84 | |         Self: Sized,
[INFO] [stderr] 85 | |     {
[INFO] [stderr] 86 | |         self.get(k)
[INFO] [stderr]    | |         ----------- recursive call site
[INFO] [stderr] 87 | |     }
[INFO] [stdout] 
[INFO] [stderr]    | |_____^ cannot return without recursing
[INFO] [stdout] running 1 test
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stderr]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]   --> src/lib.rs:89:5
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 89 | /     fn get_mut<Q: Sized>(&mut self, k: &Q) -> Option<&mut V>
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 90 | |     where
[INFO] [stdout] 
[INFO] [stderr] 91 | |         Self: Sized,
[INFO] [stderr] 92 | |     {
[INFO] [stderr] 93 | |         self.get_mut(k)
[INFO] [stderr]    | |         --------------- recursive call site
[INFO] [stderr] 94 | |     }
[INFO] [stderr]    | |_____^ cannot return without recursing
[INFO] [stderr]    |
[INFO] [stderr]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `current_index`
[INFO] [stderr]   --> src/lib.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     current_index: u64,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/hierarchy.rs:135:13
[INFO] [stderr]     |
[INFO] [stderr] 135 |             recursive_op(hierarchy, child, pre_op, post_op);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `game_kernel_utils` (lib) generated 9 warnings
[INFO] [stderr] warning: `game_kernel_utils` (lib test) generated 9 warnings (9 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/game_kernel_utils-6774d47acfbcfa5b)
[INFO] [stderr]    Doc-tests game_kernel_utils
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cf4164358e4101184053d74d5f3022e9f7306efb84f0c97877f0db552546955e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf4164358e4101184053d74d5f3022e9f7306efb84f0c97877f0db552546955e", kill_on_drop: false }`
[INFO] [stdout] cf4164358e4101184053d74d5f3022e9f7306efb84f0c97877f0db552546955e