[INFO] fetching crate art-tree 0.2.0... [INFO] testing art-tree-0.2.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7 [INFO] extracting crate art-tree 0.2.0 into /workspace/builds/worker-3-tc2/source [INFO] started tweaking crates.io crate art-tree 0.2.0 [INFO] finished tweaking crates.io crate art-tree 0.2.0 [INFO] tweaked toml for crates.io crate art-tree 0.2.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate art-tree 0.2.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 70 packages to latest compatible versions [INFO] [stderr] Adding criterion v0.3.6 (available: v0.7.0) [INFO] [stderr] Adding rand v0.8.5 (available: v0.9.2) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ee63ea7e6aa1355361da3e172ba41f4ad5529a0957d94455e21cbeba62d62ed6 [INFO] running `Command { std: "docker" "start" "-a" "ee63ea7e6aa1355361da3e172ba41f4ad5529a0957d94455e21cbeba62d62ed6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ee63ea7e6aa1355361da3e172ba41f4ad5529a0957d94455e21cbeba62d62ed6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ee63ea7e6aa1355361da3e172ba41f4ad5529a0957d94455e21cbeba62d62ed6", kill_on_drop: false }` [INFO] [stdout] ee63ea7e6aa1355361da3e172ba41f4ad5529a0957d94455e21cbeba62d62ed6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 568b02d30b1a9a881a3e031de17c4bdea05b86c62691f6a85eb043516c8b1d18 [INFO] running `Command { std: "docker" "start" "-a" "568b02d30b1a9a881a3e031de17c4bdea05b86c62691f6a85eb043516c8b1d18", kill_on_drop: false }` [INFO] [stderr] Compiling art-tree v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/node.rs:244:9 [INFO] [stdout] | [INFO] [stdout] 241 | return Some(val); [INFO] [stdout] | ---------------- any code following this expression is unreachable [INFO] [stdout] ... [INFO] [stdout] 244 | / for i in 0..self.keys.len() { [INFO] [stdout] 245 | | // find key which uses last cell inside values array [INFO] [stdout] 246 | | if self.keys[i] == self.len as u8 { [INFO] [stdout] ... | [INFO] [stdout] 253 | | } [INFO] [stdout] | |_________^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/node.rs:244:13 [INFO] [stdout] | [INFO] [stdout] 244 | for i in 0..self.keys.len() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell` [INFO] [stdout] --> src/lib.rs:290:13 [INFO] [stdout] | [INFO] [stdout] 290 | &mut *(interim as *const BoxedNode> as *mut BoxedNode>) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: for more information, visit [INFO] [stdout] = note: `#[deny(invalid_reference_casting)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary transmute [INFO] [stdout] --> src/keys.rs:100:30 [INFO] [stdout] | [INFO] [stdout] 100 | let v: u8 = unsafe { mem::transmute(*self) }; [INFO] [stdout] | --------------^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: replace this with: `i8::cast_unsigned` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unnecessary_transmutes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary transmute [INFO] [stdout] --> src/keys.rs:117:31 [INFO] [stdout] | [INFO] [stdout] 117 | let v: u16 = unsafe { mem::transmute(*self) }; [INFO] [stdout] | --------------^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: replace this with: `i16::cast_unsigned` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary transmute [INFO] [stdout] --> src/keys.rs:127:31 [INFO] [stdout] | [INFO] [stdout] 127 | let v: u32 = unsafe { mem::transmute(*self) }; [INFO] [stdout] | --------------^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: replace this with: `i32::cast_unsigned` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary transmute [INFO] [stdout] --> src/keys.rs:137:31 [INFO] [stdout] | [INFO] [stdout] 137 | let v: u64 = unsafe { mem::transmute(*self) }; [INFO] [stdout] | --------------^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: replace this with: `i64::cast_unsigned` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary transmute [INFO] [stdout] --> src/keys.rs:147:32 [INFO] [stdout] | [INFO] [stdout] 147 | let v: u128 = unsafe { mem::transmute(*self) }; [INFO] [stdout] | --------------^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: replace this with: `i128::cast_unsigned` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the type `[Option; 256]` does not permit being left uninitialized [INFO] [stdout] --> src/node.rs:378:22 [INFO] [stdout] | [INFO] [stdout] 378 | unsafe { MaybeUninit::<[Option; 256]>::uninit().assume_init() }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this code causes undefined behavior when executed [INFO] [stdout] | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done [INFO] [stdout] | [INFO] [stdout] note: enums with multiple inhabited variants have to be initialized to a variant [INFO] [stdout] --> /rustc/c2e32f1c9652b13ed99608599c1e855462f421f3/library/core/src/option.rs:599:0 [INFO] [stdout] = note: `#[warn(invalid_value)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/node.rs:585:17 [INFO] [stdout] | [INFO] [stdout] 585 | pub fn iter(&self) -> NodeIter { [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] 585 | pub fn iter(&self) -> NodeIter<'_, V> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `art-tree` (lib) due to 1 previous error; 9 warnings emitted [INFO] running `Command { std: "docker" "inspect" "568b02d30b1a9a881a3e031de17c4bdea05b86c62691f6a85eb043516c8b1d18", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "568b02d30b1a9a881a3e031de17c4bdea05b86c62691f6a85eb043516c8b1d18", kill_on_drop: false }` [INFO] [stdout] 568b02d30b1a9a881a3e031de17c4bdea05b86c62691f6a85eb043516c8b1d18