[INFO] updating cached repository zhangsoledad/lmdb_test
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/zhangsoledad/lmdb_test
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/zhangsoledad/lmdb_test" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/zhangsoledad/lmdb_test"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/zhangsoledad/lmdb_test'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/zhangsoledad/lmdb_test" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/zhangsoledad/lmdb_test"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/zhangsoledad/lmdb_test'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8269d7b73a989da8ccdcbebb734cd51f372b037f
[INFO] sha for GitHub repo zhangsoledad/lmdb_test: 8269d7b73a989da8ccdcbebb734cd51f372b037f
[INFO] validating manifest of zhangsoledad/lmdb_test on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of zhangsoledad/lmdb_test on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing zhangsoledad/lmdb_test
[INFO] finished frobbing zhangsoledad/lmdb_test
[INFO] frobbed toml for zhangsoledad/lmdb_test written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/zhangsoledad/lmdb_test/Cargo.toml
[INFO] started frobbing zhangsoledad/lmdb_test
[INFO] finished frobbing zhangsoledad/lmdb_test
[INFO] frobbed toml for zhangsoledad/lmdb_test written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/zhangsoledad/lmdb_test/Cargo.toml
[INFO] crate zhangsoledad/lmdb_test already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking zhangsoledad/lmdb_test against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-6/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bc14922061b2627f8a667d16b9da486b5cc48f8b3ff00288a64815d503b054ce
[INFO] running `"docker" "start" "-a" "bc14922061b2627f8a667d16b9da486b5cc48f8b3ff00288a64815d503b054ce"`
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling gcc v0.3.53
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]     Checking scopeguard v0.3.2
[INFO] [stderr]     Checking either v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]     Checking libc v0.2.30
[INFO] [stderr]     Checking lazy_static v0.2.8
[INFO] [stderr]     Checking futures v0.1.15
[INFO] [stderr]     Checking serde v1.0.11
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking rand v0.3.16
[INFO] [stderr]     Checking num_cpus v1.6.2
[INFO] [stderr]    Compiling lmdb-sys v0.7.1
[INFO] [stderr]     Checking tempdir v0.3.5
[INFO] [stderr]     Checking lmdb v0.7.1
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]    Compiling serde_derive v1.0.11
[INFO] [stderr]     Checking bincode v0.8.0
[INFO] [stderr]     Checking lmdb_test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Cursor`
[INFO] [stderr]  --> src/lmdb.rs:3:14
[INFO] [stderr]   |
[INFO] [stderr] 3 | use libmdb::{Cursor, Database, DatabaseFlags, Environment, Transaction, WriteFlags};
[INFO] [stderr]   |              ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rayon::prelude`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use rayon::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `height_key` should have an upper case name
[INFO] [stderr]  --> src/lmdb.rs:6:7
[INFO] [stderr]   |
[INFO] [stderr] 6 | const height_key: [u8; 1] = [104];
[INFO] [stderr]   |       ^^^^^^^^^^ help: convert the identifier to upper case: `HEIGHT_KEY`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `head_key` should have an upper case name
[INFO] [stderr]  --> src/lmdb.rs:7:7
[INFO] [stderr]   |
[INFO] [stderr] 7 | const head_key: [u8; 1] = [105];
[INFO] [stderr]   |       ^^^^^^^^ help: convert the identifier to upper case: `HEAD_KEY`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `tail_key` should have an upper case name
[INFO] [stderr]  --> src/lmdb.rs:8:7
[INFO] [stderr]   |
[INFO] [stderr] 8 | const tail_key: [u8; 1] = [116];
[INFO] [stderr]   |       ^^^^^^^^ help: convert the identifier to upper case: `TAIL_KEY`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     db.clear();
[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] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | /     height
[INFO] [stderr] 23 | |         .iter()
[INFO] [stderr] 24 | |         .map(|height| { db.save_height(*height); })
[INFO] [stderr] 25 | |         .collect::<Vec<()>>();
[INFO] [stderr]    | |______________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:24:25
[INFO] [stderr]    |
[INFO] [stderr] 24 |         .map(|height| { db.save_height(*height); })
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Cursor`
[INFO] [stderr]  --> src/lmdb.rs:3:14
[INFO] [stderr]   |
[INFO] [stderr] 3 | use libmdb::{Cursor, Database, DatabaseFlags, Environment, Transaction, WriteFlags};
[INFO] [stderr]   |              ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rayon::prelude`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use rayon::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `height_key` should have an upper case name
[INFO] [stderr]  --> src/lmdb.rs:6:7
[INFO] [stderr]   |
[INFO] [stderr] 6 | const height_key: [u8; 1] = [104];
[INFO] [stderr]   |       ^^^^^^^^^^ help: convert the identifier to upper case: `HEIGHT_KEY`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `head_key` should have an upper case name
[INFO] [stderr]  --> src/lmdb.rs:7:7
[INFO] [stderr]   |
[INFO] [stderr] 7 | const head_key: [u8; 1] = [105];
[INFO] [stderr]   |       ^^^^^^^^ help: convert the identifier to upper case: `HEAD_KEY`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `tail_key` should have an upper case name
[INFO] [stderr]  --> src/lmdb.rs:8:7
[INFO] [stderr]   |
[INFO] [stderr] 8 | const tail_key: [u8; 1] = [116];
[INFO] [stderr]   |       ^^^^^^^^ help: convert the identifier to upper case: `TAIL_KEY`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     db.clear();
[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] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | /     height
[INFO] [stderr] 23 | |         .iter()
[INFO] [stderr] 24 | |         .map(|height| { db.save_height(*height); })
[INFO] [stderr] 25 | |         .collect::<Vec<()>>();
[INFO] [stderr]    | |______________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:24:25
[INFO] [stderr]    |
[INFO] [stderr] 24 |         .map(|height| { db.save_height(*height); })
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.24s
[INFO] running `"docker" "inspect" "bc14922061b2627f8a667d16b9da486b5cc48f8b3ff00288a64815d503b054ce"`
[INFO] running `"docker" "rm" "-f" "bc14922061b2627f8a667d16b9da486b5cc48f8b3ff00288a64815d503b054ce"`
[INFO] [stdout] bc14922061b2627f8a667d16b9da486b5cc48f8b3ff00288a64815d503b054ce