[INFO] updating cached repository https://github.com/mmmpa/learning_storage_engine [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 6bdb87c206a45be350d7c41228ada15cb36e06ce [INFO] checking mmmpa/learning_storage_engine against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmmpa%2Flearning_storage_engine" "/workspace/builds/worker-1/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/mmmpa/learning_storage_engine on toolchain 45d050cde277b22a755847338f2acc2c7b834141 [INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/mmmpa/learning_storage_engine [INFO] finished tweaking git repo https://github.com/mmmpa/learning_storage_engine [INFO] tweaked toml for git repo https://github.com/mmmpa/learning_storage_engine written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/mmmpa/learning_storage_engine already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] a7cb1b1a7b2b8f93b0f9a8236e0a78bfc5d49be5b922bb58821976d5ad5329e0 [INFO] running `"docker" "start" "-a" "a7cb1b1a7b2b8f93b0f9a8236e0a78bfc5d49be5b922bb58821976d5ad5329e0"` [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Compiling libc v0.2.54 [INFO] [stderr] Checking intrusive-collections v0.7.8 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking learning_storage_engine v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> src/main.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #[macro_use] [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `DirEntry`, `ReadDir` [INFO] [stderr] --> src/hash_index_compaction.rs:2:28 [INFO] [stderr] | [INFO] [stderr] 2 | use std::fs::{OpenOptions, ReadDir, DirEntry, File}; [INFO] [stderr] | ^^^^^^^ ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Path` [INFO] [stderr] --> src/hash_index_compaction.rs:8:17 [INFO] [stderr] | [INFO] [stderr] 8 | use std::path::{Path, PathBuf}; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `replace` [INFO] [stderr] --> src/hash_index_compaction.rs:9:22 [INFO] [stderr] | [INFO] [stderr] 9 | use std::mem::{swap, replace}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `intrusive_collections::rbtree::RBTree` [INFO] [stderr] --> src/log_structured_merged_tree.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use intrusive_collections::rbtree::RBTree; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `KeyAdapter`, `RBTreeLink` [INFO] [stderr] --> src/log_structured_merged_tree.rs:8:29 [INFO] [stderr] | [INFO] [stderr] 8 | use intrusive_collections::{RBTreeLink, KeyAdapter}; [INFO] [stderr] | ^^^^^^^^^^ ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `RangeBounds` [INFO] [stderr] --> src/log_structured_merged_tree.rs:11:16 [INFO] [stderr] | [INFO] [stderr] 11 | use std::ops::{RangeBounds, Range}; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0601]: `main` function not found in crate `learning_storage_engine` [INFO] [stderr] --> src/main.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | / #[macro_use] [INFO] [stderr] 2 | | extern crate intrusive_collections; [INFO] [stderr] 3 | | use std::fmt::Debug; [INFO] [stderr] 4 | | [INFO] [stderr] ... | [INFO] [stderr] 20 | | } [INFO] [stderr] 21 | | } [INFO] [stderr] | |_^ consider adding a `main` function to `src/main.rs` [INFO] [stderr] [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> src/main.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #[macro_use] [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `DirEntry`, `ReadDir` [INFO] [stderr] --> src/hash_index_compaction.rs:2:28 [INFO] [stderr] | [INFO] [stderr] 2 | use std::fs::{OpenOptions, ReadDir, DirEntry, File}; [INFO] [stderr] | ^^^^^^^ ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Path` [INFO] [stderr] --> src/hash_index_compaction.rs:8:17 [INFO] [stderr] | [INFO] [stderr] 8 | use std::path::{Path, PathBuf}; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `replace` [INFO] [stderr] --> src/hash_index_compaction.rs:9:22 [INFO] [stderr] | [INFO] [stderr] 9 | use std::mem::{swap, replace}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `intrusive_collections::rbtree::RBTree` [INFO] [stderr] --> src/log_structured_merged_tree.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use intrusive_collections::rbtree::RBTree; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `KeyAdapter`, `RBTreeLink` [INFO] [stderr] --> src/log_structured_merged_tree.rs:8:29 [INFO] [stderr] | [INFO] [stderr] 8 | use intrusive_collections::{RBTreeLink, KeyAdapter}; [INFO] [stderr] | ^^^^^^^^^^ ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `RangeBounds` [INFO] [stderr] --> src/log_structured_merged_tree.rs:11:16 [INFO] [stderr] | [INFO] [stderr] 11 | use std::ops::{RangeBounds, Range}; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error; 7 warnings emitted [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0601`. [INFO] [stderr] error: could not compile `learning_storage_engine`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/log_structured_merged_tree.rs:66:13 [INFO] [stderr] | [INFO] [stderr] 66 | let mut c1 = self.sorted_segment_path(); [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: method is never used: `create_first_segment` [INFO] [stderr] --> src/log_structured_merged_tree.rs:155:5 [INFO] [stderr] | [INFO] [stderr] 155 | fn create_first_segment(&mut self) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/hash_index_compaction.rs:28:9 [INFO] [stderr] | [INFO] [stderr] 28 | s.retrieve(); [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: unused `std::result::Result` that must be used [INFO] [stderr] --> src/log_structured_merged_tree.rs:132:9 [INFO] [stderr] | [INFO] [stderr] 132 | fs::write(self.create_path(last_id), data); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/log_structured_merged_tree.rs:161:9 [INFO] [stderr] | [INFO] [stderr] 161 | fs::write(path, m); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 12 warnings emitted [INFO] [stderr] [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "a7cb1b1a7b2b8f93b0f9a8236e0a78bfc5d49be5b922bb58821976d5ad5329e0"` [INFO] running `"docker" "rm" "-f" "a7cb1b1a7b2b8f93b0f9a8236e0a78bfc5d49be5b922bb58821976d5ad5329e0"` [INFO] [stdout] a7cb1b1a7b2b8f93b0f9a8236e0a78bfc5d49be5b922bb58821976d5ad5329e0