Dec 17 10:56:04.033 INFO checking zhangsoledad/lmdb_test against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 10:56:04.033 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/zhangsoledad/lmdb_test:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 10:56:04.494 INFO [stdout] ad759dc93f5de3493adf086b8779d2c92789492f0db011112b51df4f5de32c4c
Dec 17 10:56:04.496 INFO running `"docker" "start" "-a" "ad759dc93f5de3493adf086b8779d2c92789492f0db011112b51df4f5de32c4c"`
Dec 17 10:56:06.975 INFO [stderr]    Compiling gcc v0.3.53
Dec 17 10:56:06.975 INFO [stderr]     Checking either v1.1.0
Dec 17 10:56:06.975 INFO [stderr]     Checking scopeguard v0.3.2
Dec 17 10:56:07.020 INFO [stderr]     Checking libc v0.2.30
Dec 17 10:56:07.021 INFO [stderr]    Compiling rayon-core v1.2.1
Dec 17 10:56:07.023 INFO [stderr]     Checking lazy_static v0.2.8
Dec 17 10:56:07.024 INFO [stderr]     Checking futures v0.1.15
Dec 17 10:56:07.033 INFO [stderr]     Checking serde v1.0.11
Dec 17 10:56:08.032 INFO [stderr]    Compiling serde_derive_internals v0.15.1
Dec 17 10:56:08.456 INFO [stderr]     Checking coco v0.1.1
Dec 17 10:56:12.050 INFO [stderr]     Checking num_cpus v1.6.2
Dec 17 10:56:12.052 INFO [stderr]     Checking rand v0.3.16
Dec 17 10:56:18.925 INFO [stderr]    Compiling serde_derive v1.0.11
Dec 17 10:56:19.305 INFO [stderr]    Compiling lmdb-sys v0.7.1
Dec 17 10:56:20.360 INFO [stderr]     Checking tempdir v0.3.5
Dec 17 10:56:24.154 INFO [stderr]     Checking rayon v0.8.2
Dec 17 10:56:25.365 INFO [stderr]     Checking lmdb v0.7.1
Dec 17 10:56:36.016 INFO [stderr]     Checking bincode v0.8.0
Dec 17 10:56:36.710 INFO [stderr]     Checking lmdb_test v0.1.0 (/opt/crater/workdir)
Dec 17 10:56:37.044 INFO [stderr] warning: unused import: `Cursor`
Dec 17 10:56:37.045 INFO [stderr]  --> src/lmdb.rs:3:14
Dec 17 10:56:37.045 INFO [stderr]   |
Dec 17 10:56:37.045 INFO [stderr] 3 | use libmdb::{Cursor, Database, DatabaseFlags, Environment, Transaction, WriteFlags};
Dec 17 10:56:37.045 INFO [stderr]   |              ^^^^^^
Dec 17 10:56:37.045 INFO [stderr]   |
Dec 17 10:56:37.045 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 10:56:37.045 INFO [stderr] 
Dec 17 10:56:37.045 INFO [stderr] warning: unused import: `rayon::prelude`
Dec 17 10:56:37.045 INFO [stderr]   --> src/main.rs:11:5
Dec 17 10:56:37.045 INFO [stderr]    |
Dec 17 10:56:37.046 INFO [stderr] 11 | use rayon::prelude::*;
Dec 17 10:56:37.046 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 17 10:56:37.046 INFO [stderr] 
Dec 17 10:56:37.074 INFO [stderr] warning: constant `height_key` should have an upper case name such as `HEIGHT_KEY`
Dec 17 10:56:37.074 INFO [stderr]  --> src/lmdb.rs:6:1
Dec 17 10:56:37.074 INFO [stderr]   |
Dec 17 10:56:37.074 INFO [stderr] 6 | const height_key: [u8; 1] = [104];
Dec 17 10:56:37.074 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:56:37.074 INFO [stderr]   |
Dec 17 10:56:37.075 INFO [stderr]   = note: #[warn(non_upper_case_globals)] on by default
Dec 17 10:56:37.075 INFO [stderr] 
Dec 17 10:56:37.079 INFO [stderr] warning: constant `head_key` should have an upper case name such as `HEAD_KEY`
Dec 17 10:56:37.080 INFO [stderr]  --> src/lmdb.rs:7:1
Dec 17 10:56:37.080 INFO [stderr]   |
Dec 17 10:56:37.080 INFO [stderr] 7 | const head_key: [u8; 1] = [105];
Dec 17 10:56:37.080 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:56:37.080 INFO [stderr] 
Dec 17 10:56:37.080 INFO [stderr] warning: constant `tail_key` should have an upper case name such as `TAIL_KEY`
Dec 17 10:56:37.080 INFO [stderr]  --> src/lmdb.rs:8:1
Dec 17 10:56:37.080 INFO [stderr]   |
Dec 17 10:56:37.080 INFO [stderr] 8 | const tail_key: [u8; 1] = [116];
Dec 17 10:56:37.080 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:56:37.080 INFO [stderr] 
Dec 17 10:56:37.084 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 10:56:37.084 INFO [stderr]   --> src/main.rs:18:5
Dec 17 10:56:37.084 INFO [stderr]    |
Dec 17 10:56:37.084 INFO [stderr] 18 |     db.clear();
Dec 17 10:56:37.084 INFO [stderr]    |     ^^^^^^^^^^^
Dec 17 10:56:37.084 INFO [stderr]    |
Dec 17 10:56:37.084 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 10:56:37.084 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 10:56:37.084 INFO [stderr] 
Dec 17 10:56:37.084 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 17 10:56:37.084 INFO [stderr]   --> src/main.rs:22:5
Dec 17 10:56:37.084 INFO [stderr]    |
Dec 17 10:56:37.084 INFO [stderr] 22 | /     height
Dec 17 10:56:37.084 INFO [stderr] 23 | |         .iter()
Dec 17 10:56:37.084 INFO [stderr] 24 | |         .map(|height| { db.save_height(*height); })
Dec 17 10:56:37.084 INFO [stderr] 25 | |         .collect::<Vec<()>>();
Dec 17 10:56:37.084 INFO [stderr]    | |______________________________^
Dec 17 10:56:37.084 INFO [stderr]    |
Dec 17 10:56:37.084 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 17 10:56:37.084 INFO [stderr] 
Dec 17 10:56:37.084 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 10:56:37.084 INFO [stderr]   --> src/main.rs:24:25
Dec 17 10:56:37.084 INFO [stderr]    |
Dec 17 10:56:37.084 INFO [stderr] 24 |         .map(|height| { db.save_height(*height); })
Dec 17 10:56:37.084 INFO [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:56:37.084 INFO [stderr]    |
Dec 17 10:56:37.084 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 10:56:37.084 INFO [stderr] 
Dec 17 10:56:37.164 INFO [stderr] warning: unused import: `Cursor`
Dec 17 10:56:37.165 INFO [stderr]  --> src/lmdb.rs:3:14
Dec 17 10:56:37.165 INFO [stderr]   |
Dec 17 10:56:37.165 INFO [stderr] 3 | use libmdb::{Cursor, Database, DatabaseFlags, Environment, Transaction, WriteFlags};
Dec 17 10:56:37.165 INFO [stderr]   |              ^^^^^^
Dec 17 10:56:37.166 INFO [stderr]   |
Dec 17 10:56:37.166 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 10:56:37.166 INFO [stderr] 
Dec 17 10:56:37.166 INFO [stderr] warning: unused import: `rayon::prelude`
Dec 17 10:56:37.167 INFO [stderr]   --> src/main.rs:11:5
Dec 17 10:56:37.167 INFO [stderr]    |
Dec 17 10:56:37.167 INFO [stderr] 11 | use rayon::prelude::*;
Dec 17 10:56:37.168 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 17 10:56:37.168 INFO [stderr] 
Dec 17 10:56:37.194 INFO [stderr] warning: constant `height_key` should have an upper case name such as `HEIGHT_KEY`
Dec 17 10:56:37.195 INFO [stderr]  --> src/lmdb.rs:6:1
Dec 17 10:56:37.195 INFO [stderr]   |
Dec 17 10:56:37.195 INFO [stderr] 6 | const height_key: [u8; 1] = [104];
Dec 17 10:56:37.195 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:56:37.196 INFO [stderr]   |
Dec 17 10:56:37.196 INFO [stderr]   = note: #[warn(non_upper_case_globals)] on by default
Dec 17 10:56:37.196 INFO [stderr] 
Dec 17 10:56:37.196 INFO [stderr] warning: constant `head_key` should have an upper case name such as `HEAD_KEY`
Dec 17 10:56:37.196 INFO [stderr]  --> src/lmdb.rs:7:1
Dec 17 10:56:37.197 INFO [stderr]   |
Dec 17 10:56:37.197 INFO [stderr] 7 | const head_key: [u8; 1] = [105];
Dec 17 10:56:37.197 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:56:37.197 INFO [stderr] 
Dec 17 10:56:37.197 INFO [stderr] warning: constant `tail_key` should have an upper case name such as `TAIL_KEY`
Dec 17 10:56:37.197 INFO [stderr]  --> src/lmdb.rs:8:1
Dec 17 10:56:37.197 INFO [stderr]   |
Dec 17 10:56:37.197 INFO [stderr] 8 | const tail_key: [u8; 1] = [116];
Dec 17 10:56:37.197 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:56:37.197 INFO [stderr] 
Dec 17 10:56:37.197 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 10:56:37.197 INFO [stderr]   --> src/main.rs:18:5
Dec 17 10:56:37.200 INFO [stderr]    |
Dec 17 10:56:37.200 INFO [stderr] 18 |     db.clear();
Dec 17 10:56:37.200 INFO [stderr]    |     ^^^^^^^^^^^
Dec 17 10:56:37.200 INFO [stderr]    |
Dec 17 10:56:37.200 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 10:56:37.200 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 10:56:37.200 INFO [stderr] 
Dec 17 10:56:37.200 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 17 10:56:37.200 INFO [stderr]   --> src/main.rs:22:5
Dec 17 10:56:37.200 INFO [stderr]    |
Dec 17 10:56:37.200 INFO [stderr] 22 | /     height
Dec 17 10:56:37.200 INFO [stderr] 23 | |         .iter()
Dec 17 10:56:37.200 INFO [stderr] 24 | |         .map(|height| { db.save_height(*height); })
Dec 17 10:56:37.200 INFO [stderr] 25 | |         .collect::<Vec<()>>();
Dec 17 10:56:37.200 INFO [stderr]    | |______________________________^
Dec 17 10:56:37.200 INFO [stderr]    |
Dec 17 10:56:37.200 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 17 10:56:37.200 INFO [stderr] 
Dec 17 10:56:37.200 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 10:56:37.200 INFO [stderr]   --> src/main.rs:24:25
Dec 17 10:56:37.200 INFO [stderr]    |
Dec 17 10:56:37.200 INFO [stderr] 24 |         .map(|height| { db.save_height(*height); })
Dec 17 10:56:37.200 INFO [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:56:37.200 INFO [stderr]    |
Dec 17 10:56:37.200 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 10:56:37.200 INFO [stderr] 
Dec 17 10:56:37.235 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.36s
Dec 17 10:56:38.378 INFO running `"docker" "inspect" "ad759dc93f5de3493adf086b8779d2c92789492f0db011112b51df4f5de32c4c"`
Dec 17 10:56:38.720 INFO running `"docker" "rm" "-f" "ad759dc93f5de3493adf086b8779d2c92789492f0db011112b51df4f5de32c4c"`
Dec 17 10:56:39.080 INFO [stdout] ad759dc93f5de3493adf086b8779d2c92789492f0db011112b51df4f5de32c4c