[INFO] updating cached repository sergorl/merkle_hash_tree [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/sergorl/merkle_hash_tree [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/sergorl/merkle_hash_tree" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/sergorl/merkle_hash_tree"` [INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/sergorl/merkle_hash_tree'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/sergorl/merkle_hash_tree" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/sergorl/merkle_hash_tree"` [INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/sergorl/merkle_hash_tree'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 27429dcf39c550bb473f4c7907ca5c3de4e5aacf [INFO] sha for GitHub repo sergorl/merkle_hash_tree: 27429dcf39c550bb473f4c7907ca5c3de4e5aacf [INFO] validating manifest of sergorl/merkle_hash_tree on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of sergorl/merkle_hash_tree on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing sergorl/merkle_hash_tree [INFO] finished frobbing sergorl/merkle_hash_tree [INFO] frobbed toml for sergorl/merkle_hash_tree written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/sergorl/merkle_hash_tree/Cargo.toml [INFO] started frobbing sergorl/merkle_hash_tree [INFO] finished frobbing sergorl/merkle_hash_tree [INFO] frobbed toml for sergorl/merkle_hash_tree written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/sergorl/merkle_hash_tree/Cargo.toml [INFO] crate sergorl/merkle_hash_tree already has a lockfile, it will not be regenerated [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking sergorl/merkle_hash_tree against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199 [INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-5/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/sergorl/merkle_hash_tree:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] fde5c9d5a9d87e9512288458020417bc27dde44c85a920f0109215aee393aea4 [INFO] running `"docker" "start" "-a" "fde5c9d5a9d87e9512288458020417bc27dde44c85a920f0109215aee393aea4"` [INFO] [stderr] Checking num_cpus v0.2.13 [INFO] [stderr] Checking rayon v0.9.0 [INFO] [stderr] Checking rust-crypto v0.2.36 [INFO] [stderr] Checking merkle_hash_tree v0.1.0 (/opt/crater/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 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 error 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 error 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 error 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 error 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: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 error 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 error 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 error 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 error 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 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: `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: `crypto::digest::Digest` [INFO] [stderr] --> tests/test.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use crypto::digest::Digest; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `rand::Rng` [INFO] [stderr] --> tests/test.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | use rand::Rng; [INFO] [stderr] | ^^^^^^^^^ [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 8.18s [INFO] running `"docker" "inspect" "fde5c9d5a9d87e9512288458020417bc27dde44c85a920f0109215aee393aea4"` [INFO] running `"docker" "rm" "-f" "fde5c9d5a9d87e9512288458020417bc27dde44c85a920f0109215aee393aea4"` [INFO] [stdout] fde5c9d5a9d87e9512288458020417bc27dde44c85a920f0109215aee393aea4