Dec 19 21:20:07.331 INFO checking WenjunHuang/SledMultiThreadTest against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 21:20:07.331 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/WenjunHuang/SledMultiThreadTest:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 21:20:07.846 INFO [stdout] 84223807aa0bf621eb02ac8273dee2a271e32e93b663a8f44276d6c18d12d523
Dec 19 21:20:07.853 INFO running `"docker" "start" "-a" "84223807aa0bf621eb02ac8273dee2a271e32e93b663a8f44276d6c18d12d523"`
Dec 19 21:20:10.216 INFO [stderr]     Checking crossbeam-utils v0.5.0
Dec 19 21:20:10.221 INFO [stderr]     Checking coco v0.2.1
Dec 19 21:20:10.224 INFO [stderr]     Checking crossbeam-epoch v0.3.1
Dec 19 21:20:11.216 INFO [stderr]     Checking crossbeam-epoch v0.6.0
Dec 19 21:20:11.336 INFO [stderr]     Checking historian v3.0.4
Dec 19 21:20:11.516 INFO [stderr]     Checking crossbeam-deque v0.2.0
Dec 19 21:20:12.591 INFO [stderr]     Checking pagetable v0.1.0
Dec 19 21:20:12.762 INFO [stderr]     Checking rayon-core v1.4.1
Dec 19 21:20:13.968 INFO [stderr]     Checking rayon v1.0.3
Dec 19 21:20:17.703 INFO [stderr]     Checking pagecache v0.7.2
Dec 19 21:20:21.896 INFO [stderr]     Checking sled v0.16.2
Dec 19 21:20:25.164 INFO [stderr]     Checking SledMultithreadTest v0.1.0 (/opt/crater/workdir)
Dec 19 21:20:26.329 INFO [stderr] warning: unused import: `SubCommand`
Dec 19 21:20:26.329 INFO [stderr]  --> src/main.rs:4:22
Dec 19 21:20:26.329 INFO [stderr]   |
Dec 19 21:20:26.329 INFO [stderr] 4 | use clap::{App, Arg, SubCommand};
Dec 19 21:20:26.329 INFO [stderr]   |                      ^^^^^^^^^^
Dec 19 21:20:26.329 INFO [stderr]   |
Dec 19 21:20:26.329 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 21:20:26.329 INFO [stderr] 
Dec 19 21:20:26.471 INFO [stderr] warning: unused variable: `prefix`
Dec 19 21:20:26.471 INFO [stderr]   --> src/main.rs:62:31
Dec 19 21:20:26.471 INFO [stderr]    |
Dec 19 21:20:26.471 INFO [stderr] 62 | fn check_write(db: Arc<Tree>, prefix: i32) {
Dec 19 21:20:26.471 INFO [stderr]    |                               ^^^^^^ help: consider using `_prefix` instead
Dec 19 21:20:26.471 INFO [stderr]    |
Dec 19 21:20:26.471 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 21:20:26.471 INFO [stderr] 
Dec 19 21:20:26.471 INFO [stderr] warning: unused variable: `prefix`
Dec 19 21:20:26.471 INFO [stderr]   --> src/main.rs:89:30
Dec 19 21:20:26.471 INFO [stderr]    |
Dec 19 21:20:26.471 INFO [stderr] 89 | fn check_read(db: Arc<Tree>, prefix: i32) {
Dec 19 21:20:26.471 INFO [stderr]    |                              ^^^^^^ help: consider using `_prefix` instead
Dec 19 21:20:26.471 INFO [stderr] 
Dec 19 21:20:26.508 INFO [stderr] warning: crate `SledMultithreadTest` should have a snake case name such as `sled_multithread_test`
Dec 19 21:20:26.508 INFO [stderr]   |
Dec 19 21:20:26.508 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 19 21:20:26.508 INFO [stderr] 
Dec 19 21:20:26.568 INFO [stderr] warning: unused import: `SubCommand`
Dec 19 21:20:26.568 INFO [stderr]  --> src/main.rs:4:22
Dec 19 21:20:26.568 INFO [stderr]   |
Dec 19 21:20:26.568 INFO [stderr] 4 | use clap::{App, Arg, SubCommand};
Dec 19 21:20:26.568 INFO [stderr]   |                      ^^^^^^^^^^
Dec 19 21:20:26.568 INFO [stderr]   |
Dec 19 21:20:26.568 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 21:20:26.568 INFO [stderr] 
Dec 19 21:20:26.666 INFO [stderr] warning: unused variable: `prefix`
Dec 19 21:20:26.666 INFO [stderr]   --> src/main.rs:62:31
Dec 19 21:20:26.666 INFO [stderr]    |
Dec 19 21:20:26.666 INFO [stderr] 62 | fn check_write(db: Arc<Tree>, prefix: i32) {
Dec 19 21:20:26.666 INFO [stderr]    |                               ^^^^^^ help: consider using `_prefix` instead
Dec 19 21:20:26.666 INFO [stderr]    |
Dec 19 21:20:26.666 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 21:20:26.666 INFO [stderr] 
Dec 19 21:20:26.666 INFO [stderr] warning: unused variable: `prefix`
Dec 19 21:20:26.666 INFO [stderr]   --> src/main.rs:89:30
Dec 19 21:20:26.666 INFO [stderr]    |
Dec 19 21:20:26.666 INFO [stderr] 89 | fn check_read(db: Arc<Tree>, prefix: i32) {
Dec 19 21:20:26.666 INFO [stderr]    |                              ^^^^^^ help: consider using `_prefix` instead
Dec 19 21:20:26.666 INFO [stderr] 
Dec 19 21:20:26.696 INFO [stderr] warning: crate `SledMultithreadTest` should have a snake case name such as `sled_multithread_test`
Dec 19 21:20:26.700 INFO [stderr]   |
Dec 19 21:20:26.700 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 19 21:20:26.700 INFO [stderr] 
Dec 19 21:20:26.718 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.69s
Dec 19 21:20:27.764 INFO running `"docker" "inspect" "84223807aa0bf621eb02ac8273dee2a271e32e93b663a8f44276d6c18d12d523"`
Dec 19 21:20:28.075 INFO running `"docker" "rm" "-f" "84223807aa0bf621eb02ac8273dee2a271e32e93b663a8f44276d6c18d12d523"`
Dec 19 21:20:28.377 INFO [stdout] 84223807aa0bf621eb02ac8273dee2a271e32e93b663a8f44276d6c18d12d523