[INFO] cloning repository https://github.com/rjzhb/MemoryAllocator-Rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rjzhb/MemoryAllocator-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjzhb%2FMemoryAllocator-Rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjzhb%2FMemoryAllocator-Rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5420cf5554e1f77ab10c7058b68d6cb8d5759feb [INFO] checking rjzhb/MemoryAllocator-Rust against master#368e2fd458a22d0cc133d0c254f2612ee999744f for pr-128351 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjzhb%2FMemoryAllocator-Rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rjzhb/MemoryAllocator-Rust on toolchain 368e2fd458a22d0cc133d0c254f2612ee999744f [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/rjzhb/MemoryAllocator-Rust [INFO] finished tweaking git repo https://github.com/rjzhb/MemoryAllocator-Rust [INFO] tweaked toml for git repo https://github.com/rjzhb/MemoryAllocator-Rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/rjzhb/MemoryAllocator-Rust 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" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking rjzhb/MemoryAllocator-Rust against try#09146510cdb33d15474a35fde290187a88b1cf35 for pr-128351 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjzhb%2FMemoryAllocator-Rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rjzhb/MemoryAllocator-Rust on toolchain 09146510cdb33d15474a35fde290187a88b1cf35 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/rjzhb/MemoryAllocator-Rust [INFO] finished tweaking git repo https://github.com/rjzhb/MemoryAllocator-Rust [INFO] tweaked toml for git repo https://github.com/rjzhb/MemoryAllocator-Rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/rjzhb/MemoryAllocator-Rust 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" "+09146510cdb33d15474a35fde290187a88b1cf35" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] checking rjzhb/MemoryAllocator-Rust against try#09146510cdb33d15474a35fde290187a88b1cf35 for pr-128351 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjzhb%2FMemoryAllocator-Rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rjzhb/MemoryAllocator-Rust on toolchain 09146510cdb33d15474a35fde290187a88b1cf35 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/rjzhb/MemoryAllocator-Rust [INFO] finished tweaking git repo https://github.com/rjzhb/MemoryAllocator-Rust [INFO] tweaked toml for git repo https://github.com/rjzhb/MemoryAllocator-Rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/rjzhb/MemoryAllocator-Rust 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" "+09146510cdb33d15474a35fde290187a88b1cf35" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d407d6d6d4b3faf943814c0b6ba27d2f2c02b36249ac65ca70358519098f2a4e [INFO] running `Command { std: "docker" "start" "-a" "d407d6d6d4b3faf943814c0b6ba27d2f2c02b36249ac65ca70358519098f2a4e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d407d6d6d4b3faf943814c0b6ba27d2f2c02b36249ac65ca70358519098f2a4e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d407d6d6d4b3faf943814c0b6ba27d2f2c02b36249ac65ca70358519098f2a4e", kill_on_drop: false }` [INFO] [stdout] d407d6d6d4b3faf943814c0b6ba27d2f2c02b36249ac65ca70358519098f2a4e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b0cd876114d2bd55c56301eb98847f916c1f8306cda53b3be7c86ae424d37ea3 [INFO] running `Command { std: "docker" "start" "-a" "b0cd876114d2bd55c56301eb98847f916c1f8306cda53b3be7c86ae424d37ea3", kill_on_drop: false }` [INFO] [stderr] Checking MemoryAllocator-Rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/allocator/memory_allocator.rs:65:38 [INFO] [stdout] | [INFO] [stdout] 65 | let chunk: MemoryChunk = *it; [INFO] [stdout] | ----------- ^^^ expected `MemoryChunk`, found `LinkedList` [INFO] [stdout] | | [INFO] [stdout] | expected due to this [INFO] [stdout] | [INFO] [stdout] = note: expected struct `MemoryChunk` [INFO] [stdout] found struct `std::collections::LinkedList` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/allocator/memory_allocator.rs:65:38 [INFO] [stdout] | [INFO] [stdout] 65 | let chunk: MemoryChunk = *it; [INFO] [stdout] | ----------- ^^^ expected `MemoryChunk`, found `LinkedList` [INFO] [stdout] | | [INFO] [stdout] | expected due to this [INFO] [stdout] | [INFO] [stdout] = note: expected struct `MemoryChunk` [INFO] [stdout] found struct `std::collections::LinkedList` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `push_back` found for enum `Option` in the current scope [INFO] [stdout] --> src/allocator/memory_allocator.rs:67:46 [INFO] [stdout] | [INFO] [stdout] 67 | self.alloc_chunk_list.take().push_back(MemoryChunk::new( [INFO] [stdout] | -----------------------------^^^^^^^^^ method not found in `Option>` [INFO] [stdout] | [INFO] [stdout] note: the method `push_back` exists on the type `std::collections::LinkedList` [INFO] [stdout] --> /rustc/09146510cdb33d15474a35fde290187a88b1cf35/library/alloc/src/collections/linked_list.rs:895:5 [INFO] [stdout] help: consider using `Option::expect` to unwrap the `std::collections::LinkedList` value, panicking if the value is an `Option::None` [INFO] [stdout] | [INFO] [stdout] 67 | self.alloc_chunk_list.take().expect("REASON").push_back(MemoryChunk::new( [INFO] [stdout] | +++++++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `push_back` found for enum `Option` in the current scope [INFO] [stdout] --> src/allocator/memory_allocator.rs:67:46 [INFO] [stdout] | [INFO] [stdout] 67 | self.alloc_chunk_list.take().push_back(MemoryChunk::new( [INFO] [stdout] | -----------------------------^^^^^^^^^ method not found in `Option>` [INFO] [stdout] | [INFO] [stdout] note: the method `push_back` exists on the type `std::collections::LinkedList` [INFO] [stdout] --> /rustc/09146510cdb33d15474a35fde290187a88b1cf35/library/alloc/src/collections/linked_list.rs:895:5 [INFO] [stdout] help: consider using `Option::expect` to unwrap the `std::collections::LinkedList` value, panicking if the value is an `Option::None` [INFO] [stdout] | [INFO] [stdout] 67 | self.alloc_chunk_list.take().expect("REASON").push_back(MemoryChunk::new( [INFO] [stdout] | +++++++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `empty` found for enum `Option` in the current scope [INFO] [stdout] --> src/allocator/memory_allocator.rs:73:48 [INFO] [stdout] | [INFO] [stdout] 73 | if self.free_chunk_list.take().empty() { [INFO] [stdout] | ^^^^^ method not found in `Option>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `empty` found for enum `Option` in the current scope [INFO] [stdout] --> src/allocator/memory_allocator.rs:73:48 [INFO] [stdout] | [INFO] [stdout] 73 | if self.free_chunk_list.take().empty() { [INFO] [stdout] | ^^^^^ method not found in `Option>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `erase` found for enum `Option` in the current scope [INFO] [stdout] --> src/allocator/memory_allocator.rs:76:45 [INFO] [stdout] | [INFO] [stdout] 76 | self.free_chunk_list.take().erase(it += 1); [INFO] [stdout] | ^^^^^ method not found in `Option>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0368]: binary assignment operation `+=` cannot be applied to type `&mut std::collections::LinkedList` [INFO] [stdout] --> src/allocator/memory_allocator.rs:76:51 [INFO] [stdout] | [INFO] [stdout] 76 | self.free_chunk_list.take().erase(it += 1); [INFO] [stdout] | --^^^^^ [INFO] [stdout] | | [INFO] [stdout] | cannot use `+=` on type `&mut std::collections::LinkedList` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `erase` found for enum `Option` in the current scope [INFO] [stdout] --> src/allocator/memory_allocator.rs:76:45 [INFO] [stdout] | [INFO] [stdout] 76 | self.free_chunk_list.take().erase(it += 1); [INFO] [stdout] | ^^^^^ method not found in `Option>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0368]: binary assignment operation `+=` cannot be applied to type `&mut std::collections::LinkedList` [INFO] [stdout] --> src/allocator/memory_allocator.rs:76:51 [INFO] [stdout] | [INFO] [stdout] 76 | self.free_chunk_list.take().erase(it += 1); [INFO] [stdout] | --^^^^^ [INFO] [stdout] | | [INFO] [stdout] | cannot use `+=` on type `&mut std::collections::LinkedList` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `cursor_back_mut` found for enum `Option` in the current scope [INFO] [stdout] --> src/allocator/memory_allocator.rs:78:45 [INFO] [stdout] | [INFO] [stdout] 78 | self.free_chunk_list.take().cursor_back_mut(); [INFO] [stdout] | ^^^^^^^^^^^^^^^ method not found in `Option>` [INFO] [stdout] | [INFO] [stdout] note: the method `cursor_back_mut` exists on the type `std::collections::LinkedList` [INFO] [stdout] --> /rustc/09146510cdb33d15474a35fde290187a88b1cf35/library/alloc/src/collections/linked_list.rs:609:5 [INFO] [stdout] help: consider using `Option::expect` to unwrap the `std::collections::LinkedList` value, panicking if the value is an `Option::None` [INFO] [stdout] | [INFO] [stdout] 78 | self.free_chunk_list.take().expect("REASON").cursor_back_mut(); [INFO] [stdout] | +++++++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/allocator/memory_allocator.rs:93:48 [INFO] [stdout] | [INFO] [stdout] 93 | fn alloc(&mut self, id: i32, size: i32) -> bool {} [INFO] [stdout] | ----- ^^^^ expected `bool`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/allocator/memory_allocator.rs:95:25 [INFO] [stdout] | [INFO] [stdout] 95 | fn free(id: i32) -> bool {} [INFO] [stdout] | ---- ^^^^ expected `bool`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `cursor_back_mut` found for enum `Option` in the current scope [INFO] [stdout] --> src/allocator/memory_allocator.rs:78:45 [INFO] [stdout] | [INFO] [stdout] 78 | self.free_chunk_list.take().cursor_back_mut(); [INFO] [stdout] | ^^^^^^^^^^^^^^^ method not found in `Option>` [INFO] [stdout] | [INFO] [stdout] note: the method `cursor_back_mut` exists on the type `std::collections::LinkedList` [INFO] [stdout] --> /rustc/09146510cdb33d15474a35fde290187a88b1cf35/library/alloc/src/collections/linked_list.rs:609:5 [INFO] [stdout] help: consider using `Option::expect` to unwrap the `std::collections::LinkedList` value, panicking if the value is an `Option::None` [INFO] [stdout] | [INFO] [stdout] 78 | self.free_chunk_list.take().expect("REASON").cursor_back_mut(); [INFO] [stdout] | +++++++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/allocator/memory_allocator.rs:93:48 [INFO] [stdout] | [INFO] [stdout] 93 | fn alloc(&mut self, id: i32, size: i32) -> bool {} [INFO] [stdout] | ----- ^^^^ expected `bool`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/allocator/memory_allocator.rs:95:25 [INFO] [stdout] | [INFO] [stdout] 95 | fn free(id: i32) -> bool {} [INFO] [stdout] | ---- ^^^^ expected `bool`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0596]: cannot borrow `list` as mutable, as it is not declared as mutable [INFO] [stdout] --> src/allocator/memory_allocator.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 41 | list.push_back(MemoryChunk::new(INVALID, 0, size)); [INFO] [stdout] | ^^^^ cannot borrow as mutable [INFO] [stdout] | [INFO] [stdout] help: consider changing this to be mutable [INFO] [stdout] | [INFO] [stdout] 40 | let mut list: LinkedList = LinkedList::new(); [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0596]: cannot borrow `list` as mutable, as it is not declared as mutable [INFO] [stdout] --> src/allocator/memory_allocator.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 41 | list.push_back(MemoryChunk::new(INVALID, 0, size)); [INFO] [stdout] | ^^^^ cannot borrow as mutable [INFO] [stdout] | [INFO] [stdout] help: consider changing this to be mutable [INFO] [stdout] | [INFO] [stdout] 40 | let mut list: LinkedList = LinkedList::new(); [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0596]: cannot borrow `list` as mutable, as it is not declared as mutable [INFO] [stdout] --> src/allocator/memory_allocator.rs:53:9 [INFO] [stdout] | [INFO] [stdout] 53 | list.push_back(MemoryChunk::new(INVALID, 0, size)); [INFO] [stdout] | ^^^^ cannot borrow as mutable [INFO] [stdout] | [INFO] [stdout] help: consider changing this to be mutable [INFO] [stdout] | [INFO] [stdout] 52 | let mut list: LinkedList = LinkedList::new(); [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `id` [INFO] [stdout] --> src/allocator/memory_allocator.rs:85:13 [INFO] [stdout] | [INFO] [stdout] 85 | fn free(id: i32) -> bool { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_id` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0596]: cannot borrow `list` as mutable, as it is not declared as mutable [INFO] [stdout] --> src/allocator/memory_allocator.rs:53:9 [INFO] [stdout] | [INFO] [stdout] 53 | list.push_back(MemoryChunk::new(INVALID, 0, size)); [INFO] [stdout] | ^^^^ cannot borrow as mutable [INFO] [stdout] | [INFO] [stdout] help: consider changing this to be mutable [INFO] [stdout] | [INFO] [stdout] 52 | let mut list: LinkedList = LinkedList::new(); [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `id` [INFO] [stdout] --> src/allocator/memory_allocator.rs:85:13 [INFO] [stdout] | [INFO] [stdout] 85 | fn free(id: i32) -> bool { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_id` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 10 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0308, E0368, E0596, E0599. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stdout] error: aborting due to 10 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0308, E0368, E0596, E0599. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stderr] error: could not compile `MemoryAllocator-Rust` (bin "MemoryAllocator-Rust" test) due to 11 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `MemoryAllocator-Rust` (bin "MemoryAllocator-Rust") due to 11 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "b0cd876114d2bd55c56301eb98847f916c1f8306cda53b3be7c86ae424d37ea3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b0cd876114d2bd55c56301eb98847f916c1f8306cda53b3be7c86ae424d37ea3", kill_on_drop: false }` [INFO] [stdout] b0cd876114d2bd55c56301eb98847f916c1f8306cda53b3be7c86ae424d37ea3