Dec 04 10:25:45.272 INFO checking sergorl/merkle_hash_tree against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 10:25:45.272 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 10:25:45.737 INFO [stdout] ae4e88de317f623e8a07354d3b2c8e53a641f683f6123131b9dac77bdf6b2be8
Dec 04 10:25:45.743 INFO running `"docker" "start" "-a" "ae4e88de317f623e8a07354d3b2c8e53a641f683f6123131b9dac77bdf6b2be8"`
Dec 04 10:25:47.043 INFO [stderr] usermod: no changes
Dec 04 10:25:47.148 INFO [stderr]     Checking num_cpus v0.2.13
Dec 04 10:25:47.167 INFO [stderr]     Checking rust-crypto v0.2.36
Dec 04 10:25:53.304 INFO [stderr]     Checking merkle_hash_tree v0.1.0 (/source)
Dec 04 10:25:54.219 INFO [stderr] warning: unused variable: `num_thread`
Dec 04 10:25:54.219 INFO [stderr]    --> src/lib.rs:272:13
Dec 04 10:25:54.219 INFO [stderr]     |
Dec 04 10:25:54.219 INFO [stderr] 272 |         let num_thread: usize;
Dec 04 10:25:54.219 INFO [stderr]     |             ^^^^^^^^^^ help: consider using `_num_thread` instead
Dec 04 10:25:54.219 INFO [stderr]     |
Dec 04 10:25:54.219 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 10:25:54.219 INFO [stderr] 
Dec 04 10:25:54.219 INFO [stderr] warning: unused variable: `num_cpus`
Dec 04 10:25:54.219 INFO [stderr]    --> src/lib.rs:255:78
Dec 04 10:25:54.219 INFO [stderr]     |
Dec 04 10:25:54.219 INFO [stderr] 255 | fn create_hash_level(hash_tree: &mut Vec<Vec<u8>>, pool: &rayon::ThreadPool, num_cpus: usize) {
Dec 04 10:25:54.219 INFO [stderr]     |                                                                              ^^^^^^^^ help: consider using `_num_cpus` instead
Dec 04 10:25:54.219 INFO [stderr] 
Dec 04 10:25:54.219 INFO [stderr] warning: unused variable: `num_cpus`
Dec 04 10:25:54.219 INFO [stderr]    --> src/lib.rs:305:5
Dec 04 10:25:54.219 INFO [stderr]     |
Dec 04 10:25:54.219 INFO [stderr] 305 |     num_cpus: usize,
Dec 04 10:25:54.219 INFO [stderr]     |     ^^^^^^^^ help: consider using `_num_cpus` instead
Dec 04 10:25:54.219 INFO [stderr] 
Dec 04 10:25:54.239 INFO [stderr] warning: unused variable: `num_thread`
Dec 04 10:25:54.239 INFO [stderr]    --> src/lib.rs:272:13
Dec 04 10:25:54.239 INFO [stderr]     |
Dec 04 10:25:54.239 INFO [stderr] 272 |         let num_thread: usize;
Dec 04 10:25:54.239 INFO [stderr]     |             ^^^^^^^^^^ help: consider using `_num_thread` instead
Dec 04 10:25:54.239 INFO [stderr]     |
Dec 04 10:25:54.239 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 10:25:54.239 INFO [stderr] 
Dec 04 10:25:54.239 INFO [stderr] warning: unused variable: `num_cpus`
Dec 04 10:25:54.239 INFO [stderr]    --> src/lib.rs:255:78
Dec 04 10:25:54.239 INFO [stderr]     |
Dec 04 10:25:54.239 INFO [stderr] 255 | fn create_hash_level(hash_tree: &mut Vec<Vec<u8>>, pool: &rayon::ThreadPool, num_cpus: usize) {
Dec 04 10:25:54.239 INFO [stderr]     |                                                                              ^^^^^^^^ help: consider using `_num_cpus` instead
Dec 04 10:25:54.239 INFO [stderr] 
Dec 04 10:25:54.243 INFO [stderr] warning: unused variable: `num_cpus`
Dec 04 10:25:54.243 INFO [stderr]    --> src/lib.rs:305:5
Dec 04 10:25:54.243 INFO [stderr]     |
Dec 04 10:25:54.243 INFO [stderr] 305 |     num_cpus: usize,
Dec 04 10:25:54.243 INFO [stderr]     |     ^^^^^^^^ help: consider using `_num_cpus` instead
Dec 04 10:25:54.243 INFO [stderr] 
Dec 04 10:25:54.311 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 10:25:54.311 INFO [stderr]    --> src/lib.rs:158:9
Dec 04 10:25:54.311 INFO [stderr]     |
Dec 04 10:25:54.311 INFO [stderr] 158 |         write!(f, "{}\n", "Tree: ");
Dec 04 10:25:54.311 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:25:54.311 INFO [stderr]     |
Dec 04 10:25:54.311 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 10:25:54.311 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 10:25:54.311 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)
Dec 04 10:25:54.311 INFO [stderr] 
Dec 04 10:25:54.311 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 10:25:54.311 INFO [stderr]    --> src/lib.rs:161:13
Dec 04 10:25:54.311 INFO [stderr]     |
Dec 04 10:25:54.311 INFO [stderr] 161 |             write!(f, "Level {}: \n", level);
Dec 04 10:25:54.311 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:25:54.311 INFO [stderr]     |
Dec 04 10:25:54.311 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 10:25:54.311 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)
Dec 04 10:25:54.311 INFO [stderr] 
Dec 04 10:25:54.311 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 10:25:54.311 INFO [stderr]    --> src/lib.rs:164:17
Dec 04 10:25:54.311 INFO [stderr]     |
Dec 04 10:25:54.311 INFO [stderr] 164 |                 write!(f, "hash {}: {}\n", index, to_hex_string(hash));
Dec 04 10:25:54.311 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:25:54.311 INFO [stderr]     |
Dec 04 10:25:54.311 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 10:25:54.311 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)
Dec 04 10:25:54.311 INFO [stderr] 
Dec 04 10:25:54.311 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 10:25:54.311 INFO [stderr]    --> src/lib.rs:170:13
Dec 04 10:25:54.311 INFO [stderr]     |
Dec 04 10:25:54.311 INFO [stderr] 170 | /             write!(
Dec 04 10:25:54.311 INFO [stderr] 171 | |                 f,
Dec 04 10:25:54.311 INFO [stderr] 172 | |                 "{}\n",
Dec 04 10:25:54.311 INFO [stderr] 173 | |                 "--------------------------------------------------------------------"
Dec 04 10:25:54.311 INFO [stderr] 174 | |             );
Dec 04 10:25:54.311 INFO [stderr]     | |______________^
Dec 04 10:25:54.311 INFO [stderr]     |
Dec 04 10:25:54.311 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 10:25:54.311 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)
Dec 04 10:25:54.311 INFO [stderr] 
Dec 04 10:25:54.318 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 10:25:54.318 INFO [stderr]    --> src/lib.rs:158:9
Dec 04 10:25:54.318 INFO [stderr]     |
Dec 04 10:25:54.318 INFO [stderr] 158 |         write!(f, "{}\n", "Tree: ");
Dec 04 10:25:54.318 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:25:54.318 INFO [stderr]     |
Dec 04 10:25:54.318 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 10:25:54.318 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 10:25:54.318 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)
Dec 04 10:25:54.318 INFO [stderr] 
Dec 04 10:25:54.318 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 10:25:54.318 INFO [stderr]    --> src/lib.rs:161:13
Dec 04 10:25:54.318 INFO [stderr]     |
Dec 04 10:25:54.318 INFO [stderr] 161 |             write!(f, "Level {}: \n", level);
Dec 04 10:25:54.318 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:25:54.318 INFO [stderr]     |
Dec 04 10:25:54.318 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 10:25:54.318 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)
Dec 04 10:25:54.318 INFO [stderr] 
Dec 04 10:25:54.318 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 10:25:54.318 INFO [stderr]    --> src/lib.rs:164:17
Dec 04 10:25:54.318 INFO [stderr]     |
Dec 04 10:25:54.318 INFO [stderr] 164 |                 write!(f, "hash {}: {}\n", index, to_hex_string(hash));
Dec 04 10:25:54.318 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:25:54.318 INFO [stderr]     |
Dec 04 10:25:54.318 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 10:25:54.318 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)
Dec 04 10:25:54.318 INFO [stderr] 
Dec 04 10:25:54.318 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 10:25:54.318 INFO [stderr]    --> src/lib.rs:170:13
Dec 04 10:25:54.318 INFO [stderr]     |
Dec 04 10:25:54.318 INFO [stderr] 170 | /             write!(
Dec 04 10:25:54.318 INFO [stderr] 171 | |                 f,
Dec 04 10:25:54.319 INFO [stderr] 172 | |                 "{}\n",
Dec 04 10:25:54.319 INFO [stderr] 173 | |                 "--------------------------------------------------------------------"
Dec 04 10:25:54.319 INFO [stderr] 174 | |             );
Dec 04 10:25:54.319 INFO [stderr]     | |______________^
Dec 04 10:25:54.319 INFO [stderr]     |
Dec 04 10:25:54.319 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 10:25:54.319 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)
Dec 04 10:25:54.319 INFO [stderr] 
Dec 04 10:25:54.815 INFO [stderr] warning: unused import: `crypto::digest::Digest`
Dec 04 10:25:54.815 INFO [stderr]   --> tests/test.rs:10:5
Dec 04 10:25:54.815 INFO [stderr]    |
Dec 04 10:25:54.815 INFO [stderr] 10 | use crypto::digest::Digest;
Dec 04 10:25:54.815 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:25:54.815 INFO [stderr]    |
Dec 04 10:25:54.815 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 04 10:25:54.815 INFO [stderr] 
Dec 04 10:25:54.815 INFO [stderr] warning: unused import: `rand::Rng`
Dec 04 10:25:54.815 INFO [stderr]   --> tests/test.rs:12:5
Dec 04 10:25:54.815 INFO [stderr]    |
Dec 04 10:25:54.815 INFO [stderr] 12 | use rand::Rng;
Dec 04 10:25:54.815 INFO [stderr]    |     ^^^^^^^^^
Dec 04 10:25:54.815 INFO [stderr] 
Dec 04 10:25:55.255 INFO [stderr] warning: unused variable: `tree`
Dec 04 10:25:55.255 INFO [stderr]   --> tests/test.rs:66:13
Dec 04 10:25:55.255 INFO [stderr]    |
Dec 04 10:25:55.255 INFO [stderr] 66 |         let tree = MerkleTree::new(&data, num_cpus::get());
Dec 04 10:25:55.255 INFO [stderr]    |             ^^^^ help: consider using `_tree` instead
Dec 04 10:25:55.259 INFO [stderr]    |
Dec 04 10:25:55.259 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 10:25:55.259 INFO [stderr] 
Dec 04 10:25:55.259 INFO [stderr] warning: unused variable: `tree`
Dec 04 10:25:55.259 INFO [stderr]   --> tests/test.rs:74:13
Dec 04 10:25:55.259 INFO [stderr]    |
Dec 04 10:25:55.260 INFO [stderr] 74 |         let tree = MerkleTree::new(&data, num_cpus::get());
Dec 04 10:25:55.260 INFO [stderr]    |             ^^^^ help: consider using `_tree` instead
Dec 04 10:25:55.260 INFO [stderr] 
Dec 04 10:25:55.267 INFO [stderr] warning: unused variable: `tree`
Dec 04 10:25:55.267 INFO [stderr]   --> tests/test.rs:82:13
Dec 04 10:25:55.267 INFO [stderr]    |
Dec 04 10:25:55.267 INFO [stderr] 82 |         let tree = MerkleTree::new(&data, num_cpus::get());
Dec 04 10:25:55.267 INFO [stderr]    |             ^^^^ help: consider using `_tree` instead
Dec 04 10:25:55.267 INFO [stderr] 
Dec 04 10:25:55.487 INFO [stderr] warning: unused import: `merkle_tree::to_hex_string`
Dec 04 10:25:55.487 INFO [stderr]  --> src/main.rs:6:5
Dec 04 10:25:55.487 INFO [stderr]   |
Dec 04 10:25:55.487 INFO [stderr] 6 | use merkle_tree::to_hex_string;
Dec 04 10:25:55.488 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:25:55.488 INFO [stderr]   |
Dec 04 10:25:55.488 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 10:25:55.488 INFO [stderr] 
Dec 04 10:25:55.511 INFO [stderr] warning: unused import: `rand::Rng`
Dec 04 10:25:55.511 INFO [stderr]  --> benches/bench.rs:9:5
Dec 04 10:25:55.511 INFO [stderr]   |
Dec 04 10:25:55.511 INFO [stderr] 9 | use rand::Rng;
Dec 04 10:25:55.511 INFO [stderr]   |     ^^^^^^^^^
Dec 04 10:25:55.511 INFO [stderr]   |
Dec 04 10:25:55.511 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 10:25:55.511 INFO [stderr] 
Dec 04 10:25:55.567 INFO [stderr] warning: unused variable: `start`
Dec 04 10:25:55.567 INFO [stderr]   --> src/main.rs:23:9
Dec 04 10:25:55.567 INFO [stderr]    |
Dec 04 10:25:55.567 INFO [stderr] 23 |     let start = PreciseTime::now();
Dec 04 10:25:55.567 INFO [stderr]    |         ^^^^^ help: consider using `_start` instead
Dec 04 10:25:55.567 INFO [stderr]    |
Dec 04 10:25:55.567 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 10:25:55.567 INFO [stderr] 
Dec 04 10:25:55.567 INFO [stderr] warning: unused variable: `end`
Dec 04 10:25:55.567 INFO [stderr]   --> src/main.rs:25:9
Dec 04 10:25:55.567 INFO [stderr]    |
Dec 04 10:25:55.567 INFO [stderr] 25 |     let end = PreciseTime::now();
Dec 04 10:25:55.567 INFO [stderr]    |         ^^^ help: consider using `_end` instead
Dec 04 10:25:55.567 INFO [stderr] 
Dec 04 10:25:55.599 INFO [stderr] warning: variable does not need to be mutable
Dec 04 10:25:55.599 INFO [stderr]   --> src/main.rs:18:9
Dec 04 10:25:55.599 INFO [stderr]    |
Dec 04 10:25:55.599 INFO [stderr] 18 |     let mut num_block: usize = 8 * 2;
Dec 04 10:25:55.599 INFO [stderr]    |         ----^^^^^^^^^
Dec 04 10:25:55.600 INFO [stderr]    |         |
Dec 04 10:25:55.600 INFO [stderr]    |         help: remove this `mut`
Dec 04 10:25:55.600 INFO [stderr]    |
Dec 04 10:25:55.600 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 10:25:55.600 INFO [stderr] 
Dec 04 10:25:55.600 INFO [stderr] warning: variable does not need to be mutable
Dec 04 10:25:55.601 INFO [stderr]   --> src/main.rs:19:9
Dec 04 10:25:55.601 INFO [stderr]    |
Dec 04 10:25:55.601 INFO [stderr] 19 |     let mut size_block: usize = 32;
Dec 04 10:25:55.601 INFO [stderr]    |         ----^^^^^^^^^^
Dec 04 10:25:55.601 INFO [stderr]    |         |
Dec 04 10:25:55.601 INFO [stderr]    |         help: remove this `mut`
Dec 04 10:25:55.601 INFO [stderr] 
Dec 04 10:25:55.777 INFO [stderr] warning: unused import: `merkle_tree::to_hex_string`
Dec 04 10:25:55.777 INFO [stderr]  --> src/main.rs:6:5
Dec 04 10:25:55.777 INFO [stderr]   |
Dec 04 10:25:55.777 INFO [stderr] 6 | use merkle_tree::to_hex_string;
Dec 04 10:25:55.777 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:25:55.777 INFO [stderr]   |
Dec 04 10:25:55.777 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 10:25:55.777 INFO [stderr] 
Dec 04 10:25:55.801 INFO [stderr] warning: unused variable: `start`
Dec 04 10:25:55.801 INFO [stderr]   --> src/main.rs:23:9
Dec 04 10:25:55.801 INFO [stderr]    |
Dec 04 10:25:55.801 INFO [stderr] 23 |     let start = PreciseTime::now();
Dec 04 10:25:55.801 INFO [stderr]    |         ^^^^^ help: consider using `_start` instead
Dec 04 10:25:55.801 INFO [stderr]    |
Dec 04 10:25:55.801 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 10:25:55.801 INFO [stderr] 
Dec 04 10:25:55.801 INFO [stderr] warning: unused variable: `end`
Dec 04 10:25:55.801 INFO [stderr]   --> src/main.rs:25:9
Dec 04 10:25:55.801 INFO [stderr]    |
Dec 04 10:25:55.801 INFO [stderr] 25 |     let end = PreciseTime::now();
Dec 04 10:25:55.801 INFO [stderr]    |         ^^^ help: consider using `_end` instead
Dec 04 10:25:55.801 INFO [stderr] 
Dec 04 10:25:55.804 INFO [stderr] warning: variable does not need to be mutable
Dec 04 10:25:55.804 INFO [stderr]   --> src/main.rs:18:9
Dec 04 10:25:55.804 INFO [stderr]    |
Dec 04 10:25:55.804 INFO [stderr] 18 |     let mut num_block: usize = 8 * 2;
Dec 04 10:25:55.804 INFO [stderr]    |         ----^^^^^^^^^
Dec 04 10:25:55.804 INFO [stderr]    |         |
Dec 04 10:25:55.804 INFO [stderr]    |         help: remove this `mut`
Dec 04 10:25:55.804 INFO [stderr]    |
Dec 04 10:25:55.804 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 10:25:55.804 INFO [stderr] 
Dec 04 10:25:55.804 INFO [stderr] warning: variable does not need to be mutable
Dec 04 10:25:55.804 INFO [stderr]   --> src/main.rs:19:9
Dec 04 10:25:55.804 INFO [stderr]    |
Dec 04 10:25:55.804 INFO [stderr] 19 |     let mut size_block: usize = 32;
Dec 04 10:25:55.804 INFO [stderr]    |         ----^^^^^^^^^^
Dec 04 10:25:55.804 INFO [stderr]    |         |
Dec 04 10:25:55.804 INFO [stderr]    |         help: remove this `mut`
Dec 04 10:25:55.804 INFO [stderr] 
Dec 04 10:25:55.831 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.75s
Dec 04 10:25:55.835 INFO [stderr] su: No module specific data is present
Dec 04 10:25:56.819 INFO running `"docker" "inspect" "ae4e88de317f623e8a07354d3b2c8e53a641f683f6123131b9dac77bdf6b2be8"`
Dec 04 10:25:57.087 INFO running `"docker" "rm" "-f" "ae4e88de317f623e8a07354d3b2c8e53a641f683f6123131b9dac77bdf6b2be8"`
Dec 04 10:25:57.335 INFO [stdout] ae4e88de317f623e8a07354d3b2c8e53a641f683f6123131b9dac77bdf6b2be8