[INFO] cloning repository https://github.com/zhangsoledad/lmdb_test
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zhangsoledad/lmdb_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhangsoledad%2Flmdb_test"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhangsoledad%2Flmdb_test'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8269d7b73a989da8ccdcbebb734cd51f372b037f
[INFO] testing zhangsoledad/lmdb_test against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhangsoledad%2Flmdb_test" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zhangsoledad/lmdb_test on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/zhangsoledad/lmdb_test
[INFO] finished tweaking git repo https://github.com/zhangsoledad/lmdb_test
[INFO] tweaked toml for git repo https://github.com/zhangsoledad/lmdb_test written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/zhangsoledad/lmdb_test already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0ea6b72b1f8f293bc0b1e807d9bc876c8405345a70e1cfee1d431f06319fe874
[INFO] running `"docker" "start" "-a" "0ea6b72b1f8f293bc0b1e807d9bc876c8405345a70e1cfee1d431f06319fe874"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.30
[INFO] [stderr]    Compiling gcc v0.3.53
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]    Compiling scopeguard v0.3.2
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling futures v0.1.15
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling serde v1.0.11
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[INFO] [stderr]    Compiling coco v0.1.1
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling num_cpus v1.6.2
[INFO] [stderr]    Compiling lmdb-sys v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.11
[INFO] [stderr]    Compiling tempdir v0.3.5
[INFO] [stderr]    Compiling lmdb v0.7.1
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling bincode v0.8.0
[INFO] [stderr]    Compiling lmdb_test v0.1.0 (/opt/rustwide/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: 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: 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: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.99s
[INFO] running `"docker" "inspect" "0ea6b72b1f8f293bc0b1e807d9bc876c8405345a70e1cfee1d431f06319fe874"`
[INFO] running `"docker" "rm" "-f" "0ea6b72b1f8f293bc0b1e807d9bc876c8405345a70e1cfee1d431f06319fe874"`
[INFO] [stdout] 0ea6b72b1f8f293bc0b1e807d9bc876c8405345a70e1cfee1d431f06319fe874
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2a1dd731190467cd8e7775b1b71c12529a60c377883bc080d1ddf75d3a5e0494
[INFO] running `"docker" "start" "-a" "2a1dd731190467cd8e7775b1b71c12529a60c377883bc080d1ddf75d3a5e0494"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling lmdb_test v0.1.0 (/opt/rustwide/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: 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: 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: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "2a1dd731190467cd8e7775b1b71c12529a60c377883bc080d1ddf75d3a5e0494"`
[INFO] running `"docker" "rm" "-f" "2a1dd731190467cd8e7775b1b71c12529a60c377883bc080d1ddf75d3a5e0494"`
[INFO] [stdout] 2a1dd731190467cd8e7775b1b71c12529a60c377883bc080d1ddf75d3a5e0494
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4ad7889e1fb5a4c89a3956e207a8771967d9c066b5ab615999bdd6aa322dffb5
[INFO] running `"docker" "start" "-a" "4ad7889e1fb5a4c89a3956e207a8771967d9c066b5ab615999bdd6aa322dffb5"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[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: 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: 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: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lmdb_test-1f5f2fee490d9caf
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4ad7889e1fb5a4c89a3956e207a8771967d9c066b5ab615999bdd6aa322dffb5"`
[INFO] running `"docker" "rm" "-f" "4ad7889e1fb5a4c89a3956e207a8771967d9c066b5ab615999bdd6aa322dffb5"`
[INFO] [stdout] 4ad7889e1fb5a4c89a3956e207a8771967d9c066b5ab615999bdd6aa322dffb5