[INFO] cloning repository https://github.com/sergorl/merkle_hash_tree [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sergorl/merkle_hash_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsergorl%2Fmerkle_hash_tree"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsergorl%2Fmerkle_hash_tree'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 27429dcf39c550bb473f4c7907ca5c3de4e5aacf [INFO] checking sergorl/merkle_hash_tree against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsergorl%2Fmerkle_hash_tree" "/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/sergorl/merkle_hash_tree on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd [INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/sergorl/merkle_hash_tree [INFO] finished tweaking git repo https://github.com/sergorl/merkle_hash_tree [INFO] tweaked toml for git repo https://github.com/sergorl/merkle_hash_tree written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/sergorl/merkle_hash_tree already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] dabe050b4c04a58f308100c1b9f13421d88af2a8449501ef526cae018e595ecf [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "dabe050b4c04a58f308100c1b9f13421d88af2a8449501ef526cae018e595ecf"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Checking num_cpus v0.2.13 [INFO] [stderr] Checking rayon-core v1.3.0 [INFO] [stderr] Checking rust-crypto v0.2.36 [INFO] [stderr] Checking rayon v0.9.0 [INFO] [stderr] Checking merkle_hash_tree v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `num_thread` [INFO] [stderr] --> src/lib.rs:272:13 [INFO] [stderr] | [INFO] [stderr] 272 | let num_thread: usize; [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_num_thread` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num_cpus` [INFO] [stderr] --> src/lib.rs:255:78 [INFO] [stderr] | [INFO] [stderr] 255 | fn create_hash_level(hash_tree: &mut Vec>, pool: &rayon::ThreadPool, num_cpus: usize) { [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_num_cpus` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num_cpus` [INFO] [stderr] --> src/lib.rs:305:5 [INFO] [stderr] | [INFO] [stderr] 305 | num_cpus: usize, [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_num_cpus` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:158:9 [INFO] [stderr] | [INFO] [stderr] 158 | write!(f, "{}\n", "Tree: "); [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] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:161:13 [INFO] [stderr] | [INFO] [stderr] 161 | write!(f, "Level {}: \n", level); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:164:17 [INFO] [stderr] | [INFO] [stderr] 164 | write!(f, "hash {}: {}\n", index, to_hex_string(hash)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:170:13 [INFO] [stderr] | [INFO] [stderr] 170 | / write!( [INFO] [stderr] 171 | | f, [INFO] [stderr] 172 | | "{}\n", [INFO] [stderr] 173 | | "--------------------------------------------------------------------" [INFO] [stderr] 174 | | ); [INFO] [stderr] | |______________^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num_thread` [INFO] [stderr] --> src/lib.rs:272:13 [INFO] [stderr] | [INFO] [stderr] 272 | let num_thread: usize; [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_num_thread` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num_cpus` [INFO] [stderr] --> src/lib.rs:255:78 [INFO] [stderr] | [INFO] [stderr] 255 | fn create_hash_level(hash_tree: &mut Vec>, pool: &rayon::ThreadPool, num_cpus: usize) { [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_num_cpus` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num_cpus` [INFO] [stderr] --> src/lib.rs:305:5 [INFO] [stderr] | [INFO] [stderr] 305 | num_cpus: usize, [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_num_cpus` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:158:9 [INFO] [stderr] | [INFO] [stderr] 158 | write!(f, "{}\n", "Tree: "); [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] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:161:13 [INFO] [stderr] | [INFO] [stderr] 161 | write!(f, "Level {}: \n", level); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:164:17 [INFO] [stderr] | [INFO] [stderr] 164 | write!(f, "hash {}: {}\n", index, to_hex_string(hash)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:170:13 [INFO] [stderr] | [INFO] [stderr] 170 | / write!( [INFO] [stderr] 171 | | f, [INFO] [stderr] 172 | | "{}\n", [INFO] [stderr] 173 | | "--------------------------------------------------------------------" [INFO] [stderr] 174 | | ); [INFO] [stderr] | |______________^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused import: `rand::Rng` [INFO] [stderr] --> benches/bench.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | use rand::Rng; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `merkle_tree::to_hex_string` [INFO] [stderr] --> src/main.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use merkle_tree::to_hex_string; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `start` [INFO] [stderr] --> src/main.rs:23:9 [INFO] [stderr] | [INFO] [stderr] 23 | let start = PreciseTime::now(); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_start` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `end` [INFO] [stderr] --> src/main.rs:25:9 [INFO] [stderr] | [INFO] [stderr] 25 | let end = PreciseTime::now(); [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_end` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:18:9 [INFO] [stderr] | [INFO] [stderr] 18 | let mut num_block: usize = 8 * 2; [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: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:19:9 [INFO] [stderr] | [INFO] [stderr] 19 | let mut size_block: usize = 32; [INFO] [stderr] | ----^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused import: `merkle_tree::to_hex_string` [INFO] [stderr] --> src/main.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use merkle_tree::to_hex_string; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `start` [INFO] [stderr] --> src/main.rs:23:9 [INFO] [stderr] | [INFO] [stderr] 23 | let start = PreciseTime::now(); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_start` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `end` [INFO] [stderr] --> src/main.rs:25:9 [INFO] [stderr] | [INFO] [stderr] 25 | let end = PreciseTime::now(); [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_end` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:18:9 [INFO] [stderr] | [INFO] [stderr] 18 | let mut num_block: usize = 8 * 2; [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: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:19:9 [INFO] [stderr] | [INFO] [stderr] 19 | let mut size_block: usize = 32; [INFO] [stderr] | ----^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `tree` [INFO] [stderr] --> tests/test.rs:66:13 [INFO] [stderr] | [INFO] [stderr] 66 | let tree = MerkleTree::new(&data, num_cpus::get()); [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_tree` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `tree` [INFO] [stderr] --> tests/test.rs:74:13 [INFO] [stderr] | [INFO] [stderr] 74 | let tree = MerkleTree::new(&data, num_cpus::get()); [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_tree` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `tree` [INFO] [stderr] --> tests/test.rs:82:13 [INFO] [stderr] | [INFO] [stderr] 82 | let tree = MerkleTree::new(&data, num_cpus::get()); [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_tree` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 11.93s [INFO] running `"docker" "inspect" "dabe050b4c04a58f308100c1b9f13421d88af2a8449501ef526cae018e595ecf"` [INFO] running `"docker" "rm" "-f" "dabe050b4c04a58f308100c1b9f13421d88af2a8449501ef526cae018e595ecf"` [INFO] [stdout] dabe050b4c04a58f308100c1b9f13421d88af2a8449501ef526cae018e595ecf