Nov 27 20:41:37.758 INFO checking sergorl/merkle_hash_tree against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 27 20:41:37.758 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-6/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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"`
Nov 27 20:41:38.208 INFO [stdout] 230ce07e6bc00d7f816eeb99dbe75a44068f74771e9743ff15f853eb47e80bc7
Nov 27 20:41:38.213 INFO running `"docker" "start" "-a" "230ce07e6bc00d7f816eeb99dbe75a44068f74771e9743ff15f853eb47e80bc7"`
Nov 27 20:41:39.320 INFO [stderr] usermod: no changes
Nov 27 20:41:39.448 INFO [stderr]     Checking num_cpus v0.2.13
Nov 27 20:41:39.456 INFO [stderr]     Checking rust-crypto v0.2.36
Nov 27 20:41:45.588 INFO [stderr]     Checking merkle_hash_tree v0.1.0 (/source)
Nov 27 20:41:46.504 INFO [stderr] warning: unused variable: `num_thread`
Nov 27 20:41:46.504 INFO [stderr]    --> src/lib.rs:272:13
Nov 27 20:41:46.504 INFO [stderr]     |
Nov 27 20:41:46.504 INFO [stderr] 272 |         let num_thread: usize;
Nov 27 20:41:46.504 INFO [stderr]     |             ^^^^^^^^^^ help: consider using `_num_thread` instead
Nov 27 20:41:46.504 INFO [stderr]     |
Nov 27 20:41:46.504 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 27 20:41:46.504 INFO [stderr] 
Nov 27 20:41:46.504 INFO [stderr] warning: unused variable: `num_cpus`
Nov 27 20:41:46.504 INFO [stderr]    --> src/lib.rs:255:78
Nov 27 20:41:46.504 INFO [stderr]     |
Nov 27 20:41:46.504 INFO [stderr] 255 | fn create_hash_level(hash_tree: &mut Vec<Vec<u8>>, pool: &rayon::ThreadPool, num_cpus: usize) {
Nov 27 20:41:46.504 INFO [stderr]     |                                                                              ^^^^^^^^ help: consider using `_num_cpus` instead
Nov 27 20:41:46.504 INFO [stderr] 
Nov 27 20:41:46.504 INFO [stderr] warning: unused variable: `num_cpus`
Nov 27 20:41:46.504 INFO [stderr]    --> src/lib.rs:305:5
Nov 27 20:41:46.504 INFO [stderr]     |
Nov 27 20:41:46.504 INFO [stderr] 305 |     num_cpus: usize,
Nov 27 20:41:46.505 INFO [stderr]     |     ^^^^^^^^ help: consider using `_num_cpus` instead
Nov 27 20:41:46.505 INFO [stderr] 
Nov 27 20:41:46.676 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 20:41:46.677 INFO [stderr]    --> src/lib.rs:158:9
Nov 27 20:41:46.677 INFO [stderr]     |
Nov 27 20:41:46.678 INFO [stderr] 158 |         write!(f, "{}\n", "Tree: ");
Nov 27 20:41:46.679 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:41:46.679 INFO [stderr]     |
Nov 27 20:41:46.680 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 27 20:41:46.681 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 20:41:46.681 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)
Nov 27 20:41:46.682 INFO [stderr] 
Nov 27 20:41:46.684 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 20:41:46.685 INFO [stderr]    --> src/lib.rs:161:13
Nov 27 20:41:46.685 INFO [stderr]     |
Nov 27 20:41:46.686 INFO [stderr] 161 |             write!(f, "Level {}: \n", level);
Nov 27 20:41:46.686 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:41:46.687 INFO [stderr]     |
Nov 27 20:41:46.687 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 20:41:46.688 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)
Nov 27 20:41:46.689 INFO [stderr] 
Nov 27 20:41:46.689 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 20:41:46.690 INFO [stderr]    --> src/lib.rs:164:17
Nov 27 20:41:46.691 INFO [stderr]     |
Nov 27 20:41:46.691 INFO [stderr] 164 |                 write!(f, "hash {}: {}\n", index, to_hex_string(hash));
Nov 27 20:41:46.692 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:41:46.692 INFO [stderr]     |
Nov 27 20:41:46.693 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 20:41:46.694 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)
Nov 27 20:41:46.694 INFO [stderr] 
Nov 27 20:41:46.695 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 20:41:46.696 INFO [stderr]    --> src/lib.rs:170:13
Nov 27 20:41:46.696 INFO [stderr]     |
Nov 27 20:41:46.697 INFO [stderr] 170 | /             write!(
Nov 27 20:41:46.698 INFO [stderr] 171 | |                 f,
Nov 27 20:41:46.698 INFO [stderr] 172 | |                 "{}\n",
Nov 27 20:41:46.699 INFO [stderr] 173 | |                 "--------------------------------------------------------------------"
Nov 27 20:41:46.699 INFO [stderr] 174 | |             );
Nov 27 20:41:46.699 INFO [stderr]     | |______________^
Nov 27 20:41:46.700 INFO [stderr]     |
Nov 27 20:41:46.700 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 20:41:46.704 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)
Nov 27 20:41:46.704 INFO [stderr] 
Nov 27 20:41:46.708 INFO [stderr] warning: unused variable: `num_thread`
Nov 27 20:41:46.708 INFO [stderr]    --> src/lib.rs:272:13
Nov 27 20:41:46.708 INFO [stderr]     |
Nov 27 20:41:46.708 INFO [stderr] 272 |         let num_thread: usize;
Nov 27 20:41:46.708 INFO [stderr]     |             ^^^^^^^^^^ help: consider using `_num_thread` instead
Nov 27 20:41:46.708 INFO [stderr]     |
Nov 27 20:41:46.708 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 27 20:41:46.708 INFO [stderr] 
Nov 27 20:41:46.708 INFO [stderr] warning: unused variable: `num_cpus`
Nov 27 20:41:46.708 INFO [stderr]    --> src/lib.rs:255:78
Nov 27 20:41:46.708 INFO [stderr]     |
Nov 27 20:41:46.708 INFO [stderr] 255 | fn create_hash_level(hash_tree: &mut Vec<Vec<u8>>, pool: &rayon::ThreadPool, num_cpus: usize) {
Nov 27 20:41:46.708 INFO [stderr]     |                                                                              ^^^^^^^^ help: consider using `_num_cpus` instead
Nov 27 20:41:46.708 INFO [stderr] 
Nov 27 20:41:46.708 INFO [stderr] warning: unused variable: `num_cpus`
Nov 27 20:41:46.708 INFO [stderr]    --> src/lib.rs:305:5
Nov 27 20:41:46.708 INFO [stderr]     |
Nov 27 20:41:46.708 INFO [stderr] 305 |     num_cpus: usize,
Nov 27 20:41:46.708 INFO [stderr]     |     ^^^^^^^^ help: consider using `_num_cpus` instead
Nov 27 20:41:46.708 INFO [stderr] 
Nov 27 20:41:46.819 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 20:41:46.819 INFO [stderr]    --> src/lib.rs:158:9
Nov 27 20:41:46.819 INFO [stderr]     |
Nov 27 20:41:46.819 INFO [stderr] 158 |         write!(f, "{}\n", "Tree: ");
Nov 27 20:41:46.819 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:41:46.819 INFO [stderr]     |
Nov 27 20:41:46.819 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 27 20:41:46.819 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 20:41:46.819 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)
Nov 27 20:41:46.819 INFO [stderr] 
Nov 27 20:41:46.819 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 20:41:46.819 INFO [stderr]    --> src/lib.rs:161:13
Nov 27 20:41:46.819 INFO [stderr]     |
Nov 27 20:41:46.819 INFO [stderr] 161 |             write!(f, "Level {}: \n", level);
Nov 27 20:41:46.819 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:41:46.819 INFO [stderr]     |
Nov 27 20:41:46.819 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 20:41:46.819 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)
Nov 27 20:41:46.819 INFO [stderr] 
Nov 27 20:41:46.823 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 20:41:46.823 INFO [stderr]    --> src/lib.rs:164:17
Nov 27 20:41:46.823 INFO [stderr]     |
Nov 27 20:41:46.823 INFO [stderr] 164 |                 write!(f, "hash {}: {}\n", index, to_hex_string(hash));
Nov 27 20:41:46.823 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:41:46.823 INFO [stderr]     |
Nov 27 20:41:46.823 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 20:41:46.823 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)
Nov 27 20:41:46.823 INFO [stderr] 
Nov 27 20:41:46.823 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 20:41:46.826 INFO [stderr]    --> src/lib.rs:170:13
Nov 27 20:41:46.826 INFO [stderr]     |
Nov 27 20:41:46.826 INFO [stderr] 170 | /             write!(
Nov 27 20:41:46.826 INFO [stderr] 171 | |                 f,
Nov 27 20:41:46.827 INFO [stderr] 172 | |                 "{}\n",
Nov 27 20:41:46.827 INFO [stderr] 173 | |                 "--------------------------------------------------------------------"
Nov 27 20:41:46.827 INFO [stderr] 174 | |             );
Nov 27 20:41:46.828 INFO [stderr]     | |______________^
Nov 27 20:41:46.828 INFO [stderr]     |
Nov 27 20:41:46.828 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 20:41:46.828 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)
Nov 27 20:41:46.829 INFO [stderr] 
Nov 27 20:41:47.596 INFO [stderr] warning: unused import: `crypto::digest::Digest`
Nov 27 20:41:47.596 INFO [stderr]   --> tests/test.rs:10:5
Nov 27 20:41:47.596 INFO [stderr]    |
Nov 27 20:41:47.597 INFO [stderr] 10 | use crypto::digest::Digest;
Nov 27 20:41:47.597 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:41:47.597 INFO [stderr]    |
Nov 27 20:41:47.597 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Nov 27 20:41:47.597 INFO [stderr] 
Nov 27 20:41:47.597 INFO [stderr] warning: unused import: `rand::Rng`
Nov 27 20:41:47.597 INFO [stderr]   --> tests/test.rs:12:5
Nov 27 20:41:47.597 INFO [stderr]    |
Nov 27 20:41:47.597 INFO [stderr] 12 | use rand::Rng;
Nov 27 20:41:47.597 INFO [stderr]    |     ^^^^^^^^^
Nov 27 20:41:47.597 INFO [stderr] 
Nov 27 20:41:47.944 INFO [stderr] warning: unused import: `merkle_tree::to_hex_string`
Nov 27 20:41:47.945 INFO [stderr]  --> src/main.rs:6:5
Nov 27 20:41:47.945 INFO [stderr]   |
Nov 27 20:41:47.945 INFO [stderr] 6 | use merkle_tree::to_hex_string;
Nov 27 20:41:47.945 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:41:47.945 INFO [stderr]   |
Nov 27 20:41:47.945 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 27 20:41:47.945 INFO [stderr] 
Nov 27 20:41:48.025 INFO [stderr] warning: unused variable: `start`
Nov 27 20:41:48.025 INFO [stderr]   --> src/main.rs:23:9
Nov 27 20:41:48.025 INFO [stderr]    |
Nov 27 20:41:48.025 INFO [stderr] 23 |     let start = PreciseTime::now();
Nov 27 20:41:48.025 INFO [stderr]    |         ^^^^^ help: consider using `_start` instead
Nov 27 20:41:48.026 INFO [stderr]    |
Nov 27 20:41:48.026 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 27 20:41:48.026 INFO [stderr] 
Nov 27 20:41:48.027 INFO [stderr] warning: unused variable: `end`
Nov 27 20:41:48.027 INFO [stderr]   --> src/main.rs:25:9
Nov 27 20:41:48.027 INFO [stderr]    |
Nov 27 20:41:48.027 INFO [stderr] 25 |     let end = PreciseTime::now();
Nov 27 20:41:48.027 INFO [stderr]    |         ^^^ help: consider using `_end` instead
Nov 27 20:41:48.027 INFO [stderr] 
Nov 27 20:41:48.039 INFO [stderr] warning: variable does not need to be mutable
Nov 27 20:41:48.039 INFO [stderr]   --> src/main.rs:18:9
Nov 27 20:41:48.039 INFO [stderr]    |
Nov 27 20:41:48.039 INFO [stderr] 18 |     let mut num_block: usize = 8 * 2;
Nov 27 20:41:48.039 INFO [stderr]    |         ----^^^^^^^^^
Nov 27 20:41:48.039 INFO [stderr]    |         |
Nov 27 20:41:48.039 INFO [stderr]    |         help: remove this `mut`
Nov 27 20:41:48.039 INFO [stderr]    |
Nov 27 20:41:48.039 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 27 20:41:48.039 INFO [stderr] 
Nov 27 20:41:48.041 INFO [stderr] warning: variable does not need to be mutable
Nov 27 20:41:48.041 INFO [stderr]   --> src/main.rs:19:9
Nov 27 20:41:48.041 INFO [stderr]    |
Nov 27 20:41:48.041 INFO [stderr] 19 |     let mut size_block: usize = 32;
Nov 27 20:41:48.041 INFO [stderr]    |         ----^^^^^^^^^^
Nov 27 20:41:48.041 INFO [stderr]    |         |
Nov 27 20:41:48.041 INFO [stderr]    |         help: remove this `mut`
Nov 27 20:41:48.041 INFO [stderr] 
Nov 27 20:41:48.048 INFO [stderr] warning: unused import: `merkle_tree::to_hex_string`
Nov 27 20:41:48.048 INFO [stderr]  --> src/main.rs:6:5
Nov 27 20:41:48.048 INFO [stderr]   |
Nov 27 20:41:48.048 INFO [stderr] 6 | use merkle_tree::to_hex_string;
Nov 27 20:41:48.048 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:41:48.048 INFO [stderr]   |
Nov 27 20:41:48.048 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 27 20:41:48.048 INFO [stderr] 
Nov 27 20:41:48.112 INFO [stderr] warning: unused variable: `tree`
Nov 27 20:41:48.112 INFO [stderr]   --> tests/test.rs:66:13
Nov 27 20:41:48.112 INFO [stderr]    |
Nov 27 20:41:48.112 INFO [stderr] 66 |         let tree = MerkleTree::new(&data, num_cpus::get());
Nov 27 20:41:48.112 INFO [stderr]    |             ^^^^ help: consider using `_tree` instead
Nov 27 20:41:48.114 INFO [stderr]    |
Nov 27 20:41:48.114 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 27 20:41:48.114 INFO [stderr] 
Nov 27 20:41:48.120 INFO [stderr] warning: unused variable: `tree`
Nov 27 20:41:48.120 INFO [stderr]   --> tests/test.rs:74:13
Nov 27 20:41:48.120 INFO [stderr]    |
Nov 27 20:41:48.120 INFO [stderr] 74 |         let tree = MerkleTree::new(&data, num_cpus::get());
Nov 27 20:41:48.120 INFO [stderr]    |             ^^^^ help: consider using `_tree` instead
Nov 27 20:41:48.122 INFO [stderr] 
Nov 27 20:41:48.122 INFO [stderr] warning: unused variable: `tree`
Nov 27 20:41:48.122 INFO [stderr]   --> tests/test.rs:82:13
Nov 27 20:41:48.122 INFO [stderr]    |
Nov 27 20:41:48.122 INFO [stderr] 82 |         let tree = MerkleTree::new(&data, num_cpus::get());
Nov 27 20:41:48.123 INFO [stderr]    |             ^^^^ help: consider using `_tree` instead
Nov 27 20:41:48.124 INFO [stderr] 
Nov 27 20:41:48.188 INFO [stderr] warning: unused variable: `start`
Nov 27 20:41:48.188 INFO [stderr]   --> src/main.rs:23:9
Nov 27 20:41:48.188 INFO [stderr]    |
Nov 27 20:41:48.188 INFO [stderr] 23 |     let start = PreciseTime::now();
Nov 27 20:41:48.188 INFO [stderr]    |         ^^^^^ help: consider using `_start` instead
Nov 27 20:41:48.188 INFO [stderr]    |
Nov 27 20:41:48.188 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 27 20:41:48.188 INFO [stderr] 
Nov 27 20:41:48.188 INFO [stderr] warning: unused variable: `end`
Nov 27 20:41:48.189 INFO [stderr]   --> src/main.rs:25:9
Nov 27 20:41:48.189 INFO [stderr]    |
Nov 27 20:41:48.191 INFO [stderr] 25 |     let end = PreciseTime::now();
Nov 27 20:41:48.191 INFO [stderr]    |         ^^^ help: consider using `_end` instead
Nov 27 20:41:48.191 INFO [stderr] 
Nov 27 20:41:48.191 INFO [stderr] warning: variable does not need to be mutable
Nov 27 20:41:48.191 INFO [stderr]   --> src/main.rs:18:9
Nov 27 20:41:48.191 INFO [stderr]    |
Nov 27 20:41:48.192 INFO [stderr] 18 |     let mut num_block: usize = 8 * 2;
Nov 27 20:41:48.192 INFO [stderr]    |         ----^^^^^^^^^
Nov 27 20:41:48.192 INFO [stderr]    |         |
Nov 27 20:41:48.192 INFO [stderr]    |         help: remove this `mut`
Nov 27 20:41:48.193 INFO [stderr]    |
Nov 27 20:41:48.193 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 27 20:41:48.193 INFO [stderr] 
Nov 27 20:41:48.193 INFO [stderr] warning: variable does not need to be mutable
Nov 27 20:41:48.193 INFO [stderr]   --> src/main.rs:19:9
Nov 27 20:41:48.193 INFO [stderr]    |
Nov 27 20:41:48.193 INFO [stderr] 19 |     let mut size_block: usize = 32;
Nov 27 20:41:48.193 INFO [stderr]    |         ----^^^^^^^^^^
Nov 27 20:41:48.193 INFO [stderr]    |         |
Nov 27 20:41:48.193 INFO [stderr]    |         help: remove this `mut`
Nov 27 20:41:48.193 INFO [stderr] 
Nov 27 20:41:48.280 INFO [stderr] warning: unused import: `rand::Rng`
Nov 27 20:41:48.280 INFO [stderr]  --> benches/bench.rs:9:5
Nov 27 20:41:48.280 INFO [stderr]   |
Nov 27 20:41:48.280 INFO [stderr] 9 | use rand::Rng;
Nov 27 20:41:48.280 INFO [stderr]   |     ^^^^^^^^^
Nov 27 20:41:48.280 INFO [stderr]   |
Nov 27 20:41:48.280 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 27 20:41:48.280 INFO [stderr] 
Nov 27 20:41:48.429 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.08s
Nov 27 20:41:48.444 INFO [stderr] su: No module specific data is present
Nov 27 20:41:49.744 INFO running `"docker" "inspect" "230ce07e6bc00d7f816eeb99dbe75a44068f74771e9743ff15f853eb47e80bc7"`
Nov 27 20:41:50.088 INFO running `"docker" "rm" "-f" "230ce07e6bc00d7f816eeb99dbe75a44068f74771e9743ff15f853eb47e80bc7"`
Nov 27 20:41:50.468 INFO [stdout] 230ce07e6bc00d7f816eeb99dbe75a44068f74771e9743ff15f853eb47e80bc7