[INFO] fetching crate art-tree 0.2.0... [INFO] checking art-tree-0.2.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1 [INFO] extracting crate art-tree 0.2.0 into /workspace/builds/worker-3-tc1/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-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate art-tree 0.2.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 80 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 38f8d3c07df31be830e509c72497df9bc69abbd6bcc1a8c6330f014f3f5fd29d [INFO] running `Command { std: "docker" "start" "-a" "38f8d3c07df31be830e509c72497df9bc69abbd6bcc1a8c6330f014f3f5fd29d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "38f8d3c07df31be830e509c72497df9bc69abbd6bcc1a8c6330f014f3f5fd29d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "38f8d3c07df31be830e509c72497df9bc69abbd6bcc1a8c6330f014f3f5fd29d", kill_on_drop: false }` [INFO] [stdout] 38f8d3c07df31be830e509c72497df9bc69abbd6bcc1a8c6330f014f3f5fd29d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 61c0bcd85be6267cfb91c39b3e4b81af05342c4978148f719d948f6e9c571a56 [INFO] running `Command { std: "docker" "start" "-a" "61c0bcd85be6267cfb91c39b3e4b81af05342c4978148f719d948f6e9c571a56", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.175 [INFO] [stderr] Compiling serde v1.0.219 [INFO] [stderr] Compiling crossbeam-utils v0.8.21 [INFO] [stderr] Compiling proc-macro2 v1.0.101 [INFO] [stderr] Compiling autocfg v1.5.0 [INFO] [stderr] Compiling zerocopy v0.8.26 [INFO] [stderr] Checking memchr v2.7.5 [INFO] [stderr] Compiling unicode-ident v1.0.18 [INFO] [stderr] Compiling rayon-core v1.13.0 [INFO] [stderr] Checking either v1.15.0 [INFO] [stderr] Compiling serde_json v1.0.143 [INFO] [stderr] Checking ryu v1.0.20 [INFO] [stderr] Checking itoa v1.0.15 [INFO] [stderr] Checking cfg-if v1.0.3 [INFO] [stderr] Checking plotters-backend v0.3.7 [INFO] [stderr] Checking regex-syntax v0.8.6 [INFO] [stderr] Checking unicode-width v0.1.14 [INFO] [stderr] Checking cast v0.3.0 [INFO] [stderr] Checking same-file v1.0.6 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Checking half v1.8.3 [INFO] [stderr] Checking oorandom v11.1.5 [INFO] [stderr] Checking walkdir v2.5.0 [INFO] [stderr] Checking lazy_static v1.5.0 [INFO] [stderr] Checking art-tree v0.2.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking plotters-svg v0.3.7 [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)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Checking clap v2.34.0 [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/350d0ef0ec0493e6d21cfb265cb8211a0e74d766/library/core/src/option.rs:593:1 [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; 8 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "61c0bcd85be6267cfb91c39b3e4b81af05342c4978148f719d948f6e9c571a56", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "61c0bcd85be6267cfb91c39b3e4b81af05342c4978148f719d948f6e9c571a56", kill_on_drop: false }` [INFO] [stdout] 61c0bcd85be6267cfb91c39b3e4b81af05342c4978148f719d948f6e9c571a56