Nov 18 14:54:41.382 INFO testing ethash-0.3.1 against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982
Nov 18 14:54:41.382 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-2/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt build --frozen" "-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 18 14:54:41.590 INFO [stdout] d934e6d94bafda10f5ccacac5837cccbb1493b2fd1b8a682557281fbc3106d51
Nov 18 14:54:41.592 INFO running `"docker" "start" "-a" "d934e6d94bafda10f5ccacac5837cccbb1493b2fd1b8a682557281fbc3106d51"`
Nov 18 14:54:42.011 INFO [stderr] usermod: no changes
Nov 18 14:54:42.070 INFO [stderr]    Compiling ethereum-rlp v0.2.3
Nov 18 14:54:43.429 INFO [stderr]    Compiling ethereum-bigint v0.2.9
Nov 18 14:54:46.802 INFO [stderr]    Compiling ethash v0.3.1 (/source)
Nov 18 14:54:47.968 INFO [stderr] warning: unused import: `H1024`
Nov 18 14:54:47.968 INFO [stderr]   --> src/lib.rs:17:14
Nov 18 14:54:47.968 INFO [stderr]    |
Nov 18 14:54:47.968 INFO [stderr] 17 | use bigint::{H1024, U256, H256, H64, H512};
Nov 18 14:54:47.968 INFO [stderr]    |              ^^^^^
Nov 18 14:54:47.968 INFO [stderr]    |
Nov 18 14:54:47.968 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Nov 18 14:54:47.968 INFO [stderr] 
Nov 18 14:54:48.158 INFO [stderr] warning: unused variable: `a32`
Nov 18 14:54:48.159 INFO [stderr]    --> src/lib.rs:111:13
Nov 18 14:54:48.159 INFO [stderr]     |
Nov 18 14:54:48.159 INFO [stderr] 111 |         let a32 = (&a[j..]).read_u32::<LittleEndian>().unwrap();
Nov 18 14:54:48.159 INFO [stderr]     |             ^^^ help: consider using `_a32` instead
Nov 18 14:54:48.160 INFO [stderr]     |
Nov 18 14:54:48.160 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 18 14:54:48.160 INFO [stderr] 
Nov 18 14:54:48.161 INFO [stderr] warning: unused variable: `b32`
Nov 18 14:54:48.161 INFO [stderr]    --> src/lib.rs:112:13
Nov 18 14:54:48.161 INFO [stderr]     |
Nov 18 14:54:48.161 INFO [stderr] 112 |         let b32 = (&b[j..]).read_u32::<LittleEndian>().unwrap();
Nov 18 14:54:48.162 INFO [stderr]     |             ^^^ help: consider using `_b32` instead
Nov 18 14:54:48.162 INFO [stderr] 
Nov 18 14:54:48.162 INFO [stderr] warning: unused variable: `a32`
Nov 18 14:54:48.163 INFO [stderr]    --> src/lib.rs:125:13
Nov 18 14:54:48.163 INFO [stderr]     |
Nov 18 14:54:48.163 INFO [stderr] 125 |         let a32 = (&a[j..]).read_u32::<LittleEndian>().unwrap();
Nov 18 14:54:48.163 INFO [stderr]     |             ^^^ help: consider using `_a32` instead
Nov 18 14:54:48.164 INFO [stderr] 
Nov 18 14:54:48.164 INFO [stderr] warning: unused variable: `b32`
Nov 18 14:54:48.164 INFO [stderr]    --> src/lib.rs:126:13
Nov 18 14:54:48.164 INFO [stderr]     |
Nov 18 14:54:48.165 INFO [stderr] 126 |         let b32 = (&b[j..]).read_u32::<LittleEndian>().unwrap();
Nov 18 14:54:48.165 INFO [stderr]     |             ^^^ help: consider using `_b32` instead
Nov 18 14:54:48.165 INFO [stderr] 
Nov 18 14:54:48.165 INFO [stderr] warning: unused variable: `n`
Nov 18 14:54:48.166 INFO [stderr]    --> src/lib.rs:136:9
Nov 18 14:54:48.166 INFO [stderr]     |
Nov 18 14:54:48.166 INFO [stderr] 136 |     let n = a.len();
Nov 18 14:54:48.167 INFO [stderr]     |         ^ help: consider using `_n` instead
Nov 18 14:54:48.167 INFO [stderr] 
Nov 18 14:54:48.167 INFO [stderr] warning: unused variable: `i`
Nov 18 14:54:48.167 INFO [stderr]    --> src/lib.rs:307:9
Nov 18 14:54:48.168 INFO [stderr]     |
Nov 18 14:54:48.168 INFO [stderr] 307 |     for i in 0..epoch {
Nov 18 14:54:48.168 INFO [stderr]     |         ^ help: consider using `_i` instead
Nov 18 14:54:48.168 INFO [stderr] 
Nov 18 14:54:48.212 INFO [stderr] warning: field is never used: `cache_size`
Nov 18 14:54:48.213 INFO [stderr]   --> src/dag.rs:16:5
Nov 18 14:54:48.213 INFO [stderr]    |
Nov 18 14:54:48.213 INFO [stderr] 16 |     cache_size: usize,
Nov 18 14:54:48.214 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Nov 18 14:54:48.214 INFO [stderr]    |
Nov 18 14:54:48.214 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 18 14:54:48.214 INFO [stderr] 
Nov 18 14:54:48.215 INFO [stderr] warning: constant item is never used: `CACHE_MULTIPLIER`
Nov 18 14:54:48.215 INFO [stderr]   --> src/lib.rs:26:1
Nov 18 14:54:48.215 INFO [stderr]    |
Nov 18 14:54:48.215 INFO [stderr] 26 | const CACHE_MULTIPLIER: usize = 1024;
Nov 18 14:54:48.216 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 14:54:48.216 INFO [stderr] 
Nov 18 14:54:48.216 INFO [stderr] warning: constant item is never used: `FNV_PRIME`
Nov 18 14:54:48.217 INFO [stderr]   --> src/lib.rs:99:1
Nov 18 14:54:48.217 INFO [stderr]    |
Nov 18 14:54:48.217 INFO [stderr] 99 | const FNV_PRIME: u32 = 0x01000193;
Nov 18 14:54:48.217 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 14:54:48.217 INFO [stderr] 
Nov 18 14:54:48.217 INFO [stderr] warning: function is never used: `u8s_to_u32`
Nov 18 14:54:48.217 INFO [stderr]    --> src/lib.rs:135:1
Nov 18 14:54:48.217 INFO [stderr]     |
Nov 18 14:54:48.217 INFO [stderr] 135 | fn u8s_to_u32(a: &[u8]) -> u32 {
Nov 18 14:54:48.217 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 14:54:48.217 INFO [stderr] 
Nov 18 14:54:48.217 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 14:54:48.217 INFO [stderr]    --> src/lib.rs:114:9
Nov 18 14:54:48.217 INFO [stderr]     |
Nov 18 14:54:48.217 INFO [stderr] 114 | /         (&mut r[j..]).write_u32::<LittleEndian>(
Nov 18 14:54:48.217 INFO [stderr] 115 | |             fnv((&a[j..]).read_u32::<LittleEndian>().unwrap(),
Nov 18 14:54:48.217 INFO [stderr] 116 | |                 (&b[j..]).read_u32::<LittleEndian>().unwrap()));
Nov 18 14:54:48.217 INFO [stderr]     | |________________________________________________________________^
Nov 18 14:54:48.218 INFO [stderr]     |
Nov 18 14:54:48.218 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 18 14:54:48.218 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 14:54:48.218 INFO [stderr] 
Nov 18 14:54:48.218 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 14:54:48.218 INFO [stderr]    --> src/lib.rs:128:9
Nov 18 14:54:48.218 INFO [stderr]     |
Nov 18 14:54:48.218 INFO [stderr] 128 | /         (&mut r[j..]).write_u32::<LittleEndian>(
Nov 18 14:54:48.218 INFO [stderr] 129 | |             fnv((&a[j..]).read_u32::<LittleEndian>().unwrap(),
Nov 18 14:54:48.218 INFO [stderr] 130 | |                 (&b[j..]).read_u32::<LittleEndian>().unwrap()));
Nov 18 14:54:48.218 INFO [stderr]     | |________________________________________________________________^
Nov 18 14:54:48.218 INFO [stderr]     |
Nov 18 14:54:48.218 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 14:54:48.218 INFO [stderr] 
Nov 18 14:54:48.218 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 14:54:48.218 INFO [stderr]    --> src/lib.rs:152:5
Nov 18 14:54:48.218 INFO [stderr]     |
Nov 18 14:54:48.218 INFO [stderr] 152 |     mix.as_mut().write_u32::<LittleEndian>(mix_first32);
Nov 18 14:54:48.218 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 14:54:48.218 INFO [stderr]     |
Nov 18 14:54:48.218 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 14:54:48.218 INFO [stderr] 
Nov 18 14:54:48.218 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 14:54:48.219 INFO [stderr]    --> src/lib.rs:230:9
Nov 18 14:54:48.219 INFO [stderr]     |
Nov 18 14:54:48.219 INFO [stderr] 230 |         (&mut cmix[j..]).write_u32::<LittleEndian>(c);
Nov 18 14:54:48.219 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 14:54:48.219 INFO [stderr]     |
Nov 18 14:54:48.219 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 14:54:48.219 INFO [stderr] 
Nov 18 14:54:48.419 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.39s
Nov 18 14:54:48.424 INFO [stderr] su: No module specific data is present
Nov 18 14:54:48.704 INFO running `"docker" "inspect" "d934e6d94bafda10f5ccacac5837cccbb1493b2fd1b8a682557281fbc3106d51"`
Nov 18 14:54:48.807 INFO running `"docker" "rm" "-f" "d934e6d94bafda10f5ccacac5837cccbb1493b2fd1b8a682557281fbc3106d51"`
Nov 18 14:54:48.867 INFO [stdout] d934e6d94bafda10f5ccacac5837cccbb1493b2fd1b8a682557281fbc3106d51
Nov 18 14:54:48.869 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-2/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt test --frozen --no-run" "-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 18 14:54:49.102 INFO [stdout] 1e3894d4296caf32dc15c30c0c437143de8159bb3c852a1b8111880fc5b34ea4
Nov 18 14:54:49.107 INFO running `"docker" "start" "-a" "1e3894d4296caf32dc15c30c0c437143de8159bb3c852a1b8111880fc5b34ea4"`
Nov 18 14:54:49.472 INFO [stderr] usermod: no changes
Nov 18 14:54:49.544 INFO [stderr]    Compiling blockchain v0.1.9
Nov 18 14:54:49.548 INFO [stderr]    Compiling hmac-drbg v0.1.2
Nov 18 14:54:49.548 INFO [stderr]    Compiling ethereum-trie v0.3.8
Nov 18 14:54:49.548 INFO [stderr]    Compiling ethereum-bloom v0.2.1
Nov 18 14:54:49.548 INFO [stderr]    Compiling ethereum-block-core v0.1.0
Nov 18 14:54:50.028 INFO [stderr]    Compiling libsecp256k1 v0.1.14
Nov 18 14:55:05.457 INFO [stderr]    Compiling ethereum-block v0.3.5
Nov 18 14:55:09.065 INFO [stderr]    Compiling ethash v0.3.1 (/source)
Nov 18 14:55:10.903 INFO [stderr] warning: unused import: `H1024`
Nov 18 14:55:10.903 INFO [stderr]   --> src/lib.rs:17:14
Nov 18 14:55:10.903 INFO [stderr]    |
Nov 18 14:55:10.903 INFO [stderr] 17 | use bigint::{H1024, U256, H256, H64, H512};
Nov 18 14:55:10.903 INFO [stderr]    |              ^^^^^
Nov 18 14:55:10.903 INFO [stderr]    |
Nov 18 14:55:10.903 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Nov 18 14:55:10.903 INFO [stderr] 
Nov 18 14:55:11.196 INFO [stderr] warning: unused variable: `a32`
Nov 18 14:55:11.196 INFO [stderr]    --> src/lib.rs:111:13
Nov 18 14:55:11.196 INFO [stderr]     |
Nov 18 14:55:11.196 INFO [stderr] 111 |         let a32 = (&a[j..]).read_u32::<LittleEndian>().unwrap();
Nov 18 14:55:11.196 INFO [stderr]     |             ^^^ help: consider using `_a32` instead
Nov 18 14:55:11.196 INFO [stderr]     |
Nov 18 14:55:11.197 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 18 14:55:11.197 INFO [stderr] 
Nov 18 14:55:11.197 INFO [stderr] warning: unused variable: `b32`
Nov 18 14:55:11.197 INFO [stderr]    --> src/lib.rs:112:13
Nov 18 14:55:11.197 INFO [stderr]     |
Nov 18 14:55:11.197 INFO [stderr] 112 |         let b32 = (&b[j..]).read_u32::<LittleEndian>().unwrap();
Nov 18 14:55:11.197 INFO [stderr]     |             ^^^ help: consider using `_b32` instead
Nov 18 14:55:11.197 INFO [stderr] 
Nov 18 14:55:11.197 INFO [stderr] warning: unused variable: `a32`
Nov 18 14:55:11.197 INFO [stderr]    --> src/lib.rs:125:13
Nov 18 14:55:11.197 INFO [stderr]     |
Nov 18 14:55:11.197 INFO [stderr] 125 |         let a32 = (&a[j..]).read_u32::<LittleEndian>().unwrap();
Nov 18 14:55:11.197 INFO [stderr]     |             ^^^ help: consider using `_a32` instead
Nov 18 14:55:11.197 INFO [stderr] 
Nov 18 14:55:11.197 INFO [stderr] warning: unused variable: `b32`
Nov 18 14:55:11.197 INFO [stderr]    --> src/lib.rs:126:13
Nov 18 14:55:11.197 INFO [stderr]     |
Nov 18 14:55:11.197 INFO [stderr] 126 |         let b32 = (&b[j..]).read_u32::<LittleEndian>().unwrap();
Nov 18 14:55:11.197 INFO [stderr]     |             ^^^ help: consider using `_b32` instead
Nov 18 14:55:11.197 INFO [stderr] 
Nov 18 14:55:11.197 INFO [stderr] warning: unused variable: `n`
Nov 18 14:55:11.197 INFO [stderr]    --> src/lib.rs:136:9
Nov 18 14:55:11.197 INFO [stderr]     |
Nov 18 14:55:11.198 INFO [stderr] 136 |     let n = a.len();
Nov 18 14:55:11.198 INFO [stderr]     |         ^ help: consider using `_n` instead
Nov 18 14:55:11.198 INFO [stderr] 
Nov 18 14:55:11.203 INFO [stderr] warning: unused variable: `i`
Nov 18 14:55:11.204 INFO [stderr]    --> src/lib.rs:307:9
Nov 18 14:55:11.204 INFO [stderr]     |
Nov 18 14:55:11.204 INFO [stderr] 307 |     for i in 0..epoch {
Nov 18 14:55:11.204 INFO [stderr]     |         ^ help: consider using `_i` instead
Nov 18 14:55:11.204 INFO [stderr] 
Nov 18 14:55:11.281 INFO [stderr] warning: field is never used: `cache_size`
Nov 18 14:55:11.281 INFO [stderr]   --> src/dag.rs:16:5
Nov 18 14:55:11.281 INFO [stderr]    |
Nov 18 14:55:11.281 INFO [stderr] 16 |     cache_size: usize,
Nov 18 14:55:11.281 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Nov 18 14:55:11.281 INFO [stderr]    |
Nov 18 14:55:11.281 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 18 14:55:11.281 INFO [stderr] 
Nov 18 14:55:11.283 INFO [stderr] warning: constant item is never used: `CACHE_MULTIPLIER`
Nov 18 14:55:11.283 INFO [stderr]   --> src/lib.rs:26:1
Nov 18 14:55:11.283 INFO [stderr]    |
Nov 18 14:55:11.283 INFO [stderr] 26 | const CACHE_MULTIPLIER: usize = 1024;
Nov 18 14:55:11.283 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 14:55:11.283 INFO [stderr] 
Nov 18 14:55:11.283 INFO [stderr] warning: constant item is never used: `FNV_PRIME`
Nov 18 14:55:11.283 INFO [stderr]   --> src/lib.rs:99:1
Nov 18 14:55:11.283 INFO [stderr]    |
Nov 18 14:55:11.283 INFO [stderr] 99 | const FNV_PRIME: u32 = 0x01000193;
Nov 18 14:55:11.283 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 14:55:11.283 INFO [stderr] 
Nov 18 14:55:11.283 INFO [stderr] warning: function is never used: `u8s_to_u32`
Nov 18 14:55:11.283 INFO [stderr]    --> src/lib.rs:135:1
Nov 18 14:55:11.283 INFO [stderr]     |
Nov 18 14:55:11.283 INFO [stderr] 135 | fn u8s_to_u32(a: &[u8]) -> u32 {
Nov 18 14:55:11.283 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 14:55:11.283 INFO [stderr] 
Nov 18 14:55:11.287 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 14:55:11.287 INFO [stderr]    --> src/lib.rs:114:9
Nov 18 14:55:11.287 INFO [stderr]     |
Nov 18 14:55:11.287 INFO [stderr] 114 | /         (&mut r[j..]).write_u32::<LittleEndian>(
Nov 18 14:55:11.287 INFO [stderr] 115 | |             fnv((&a[j..]).read_u32::<LittleEndian>().unwrap(),
Nov 18 14:55:11.287 INFO [stderr] 116 | |                 (&b[j..]).read_u32::<LittleEndian>().unwrap()));
Nov 18 14:55:11.287 INFO [stderr]     | |________________________________________________________________^
Nov 18 14:55:11.287 INFO [stderr]     |
Nov 18 14:55:11.289 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 18 14:55:11.289 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 14:55:11.289 INFO [stderr] 
Nov 18 14:55:11.289 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 14:55:11.289 INFO [stderr]    --> src/lib.rs:128:9
Nov 18 14:55:11.289 INFO [stderr]     |
Nov 18 14:55:11.289 INFO [stderr] 128 | /         (&mut r[j..]).write_u32::<LittleEndian>(
Nov 18 14:55:11.289 INFO [stderr] 129 | |             fnv((&a[j..]).read_u32::<LittleEndian>().unwrap(),
Nov 18 14:55:11.289 INFO [stderr] 130 | |                 (&b[j..]).read_u32::<LittleEndian>().unwrap()));
Nov 18 14:55:11.289 INFO [stderr]     | |________________________________________________________________^
Nov 18 14:55:11.289 INFO [stderr]     |
Nov 18 14:55:11.289 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 14:55:11.289 INFO [stderr] 
Nov 18 14:55:11.289 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 14:55:11.289 INFO [stderr]    --> src/lib.rs:152:5
Nov 18 14:55:11.289 INFO [stderr]     |
Nov 18 14:55:11.289 INFO [stderr] 152 |     mix.as_mut().write_u32::<LittleEndian>(mix_first32);
Nov 18 14:55:11.289 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 14:55:11.289 INFO [stderr]     |
Nov 18 14:55:11.289 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 14:55:11.289 INFO [stderr] 
Nov 18 14:55:11.295 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 14:55:11.295 INFO [stderr]    --> src/lib.rs:230:9
Nov 18 14:55:11.295 INFO [stderr]     |
Nov 18 14:55:11.295 INFO [stderr] 230 |         (&mut cmix[j..]).write_u32::<LittleEndian>(c);
Nov 18 14:55:11.295 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 14:55:11.295 INFO [stderr]     |
Nov 18 14:55:11.295 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 14:55:11.295 INFO [stderr] 
Nov 18 14:55:12.087 INFO [stderr] warning: unused import: `blockchain::chain::HeaderHash`
Nov 18 14:55:12.088 INFO [stderr]   --> tests/headers.rs:13:5
Nov 18 14:55:12.088 INFO [stderr]    |
Nov 18 14:55:12.088 INFO [stderr] 13 | use blockchain::chain::HeaderHash;
Nov 18 14:55:12.090 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 14:55:12.090 INFO [stderr]    |
Nov 18 14:55:12.091 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Nov 18 14:55:12.091 INFO [stderr] 
Nov 18 14:55:13.047 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.55s
Nov 18 14:55:13.055 INFO [stderr] su: No module specific data is present
Nov 18 14:55:14.196 INFO running `"docker" "inspect" "1e3894d4296caf32dc15c30c0c437143de8159bb3c852a1b8111880fc5b34ea4"`
Nov 18 14:55:14.601 INFO running `"docker" "rm" "-f" "1e3894d4296caf32dc15c30c0c437143de8159bb3c852a1b8111880fc5b34ea4"`
Nov 18 14:55:14.886 INFO [stdout] 1e3894d4296caf32dc15c30c0c437143de8159bb3c852a1b8111880fc5b34ea4
Nov 18 14:55:14.892 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-2/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt test --frozen" "-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 18 14:55:15.383 INFO [stdout] 9618bbbd3b073b738b685907d5c2984189bf7ad05ff479396c2b350b598e425b
Nov 18 14:55:15.386 INFO running `"docker" "start" "-a" "9618bbbd3b073b738b685907d5c2984189bf7ad05ff479396c2b350b598e425b"`
Nov 18 14:55:16.750 INFO [stderr] usermod: no changes
Nov 18 14:55:16.939 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
Nov 18 14:55:16.939 INFO [stderr]      Running /target/debug/deps/ethash-6e22c7bb9c703638
Nov 18 14:55:16.955 INFO [stderr]      Running /target/debug/deps/headers-ad819f87d7b44be5
Nov 18 14:55:16.955 INFO [stdout] 
Nov 18 14:55:16.955 INFO [stdout] running 0 tests
Nov 18 14:55:16.955 INFO [stdout] 
Nov 18 14:55:16.955 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 18 14:55:16.955 INFO [stdout] 
Nov 18 14:55:16.963 INFO [stdout] 
Nov 18 14:55:16.963 INFO [stdout] running 2 tests
Nov 18 14:56:16.959 INFO [stdout] test header1 ... test header1 has been running for over 60 seconds
Nov 18 14:56:16.959 INFO [stdout] test header2 ... test header2 has been running for over 60 seconds
Nov 18 14:57:37.351 INFO [stdout] test header2 ... ok
Nov 18 14:57:40.375 INFO [stderr]    Doc-tests ethash
Nov 18 14:57:40.375 INFO [stdout] test header1 ... ok
Nov 18 14:57:40.375 INFO [stdout] 
Nov 18 14:57:40.375 INFO [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 18 14:57:40.375 INFO [stdout] 
Nov 18 14:57:43.003 INFO [stdout] 
Nov 18 14:57:43.003 INFO [stdout] running 0 tests
Nov 18 14:57:43.003 INFO [stdout] 
Nov 18 14:57:43.003 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 18 14:57:43.003 INFO [stdout] 
Nov 18 14:57:43.023 INFO [stderr] su: No module specific data is present
Nov 18 14:57:43.859 INFO running `"docker" "inspect" "9618bbbd3b073b738b685907d5c2984189bf7ad05ff479396c2b350b598e425b"`
Nov 18 14:57:44.145 INFO running `"docker" "rm" "-f" "9618bbbd3b073b738b685907d5c2984189bf7ad05ff479396c2b350b598e425b"`
Nov 18 14:57:44.413 INFO [stdout] 9618bbbd3b073b738b685907d5c2984189bf7ad05ff479396c2b350b598e425b