[INFO] updating cached repository https://github.com/WenjunHuang/SledMultiThreadTest
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a6fa19f409ad4b6f51d8cdb5fafe78f08e09b0fc
[INFO] testing WenjunHuang/SledMultiThreadTest against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FWenjunHuang%2FSledMultiThreadTest" "work/builds/worker-8/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/WenjunHuang/SledMultiThreadTest on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/WenjunHuang/SledMultiThreadTest
[INFO] finished tweaking git repo https://github.com/WenjunHuang/SledMultiThreadTest
[INFO] tweaked toml for git repo https://github.com/WenjunHuang/SledMultiThreadTest written to work/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/WenjunHuang/SledMultiThreadTest already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] c005929cfcf708d66c36b854533bdac90638bb7b883a1a689bf2662edc6eb295
[INFO] running `"docker" "start" "-a" "c005929cfcf708d66c36b854533bdac90638bb7b883a1a689bf2662edc6eb295"`
[INFO] [stderr]    Compiling crossbeam-utils v0.5.0
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling quote v0.6.9
[INFO] [stderr]    Compiling bincode v1.0.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.6.0
[INFO] [stderr]    Compiling coco v0.2.1
[INFO] [stderr]    Compiling syn v0.15.18
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling historian v3.0.4
[INFO] [stderr]    Compiling pagetable v0.1.0
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling pagecache v0.7.2
[INFO] [stderr]    Compiling sled v0.16.2
[INFO] [stderr]    Compiling SledMultithreadTest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `SubCommand`
[INFO] [stderr]  --> src/main.rs:4:22
[INFO] [stderr]   |
[INFO] [stderr] 4 | use clap::{App, Arg, SubCommand};
[INFO] [stderr]   |                      ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prefix`
[INFO] [stderr]   --> src/main.rs:62:31
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn check_write(db: Arc<Tree>, prefix: i32) {
[INFO] [stderr]    |                               ^^^^^^ help: consider prefixing with an underscore: `_prefix`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prefix`
[INFO] [stderr]   --> src/main.rs:89:30
[INFO] [stderr]    |
[INFO] [stderr] 89 | fn check_read(db: Arc<Tree>, prefix: i32) {
[INFO] [stderr]    |                              ^^^^^^ help: consider prefixing with an underscore: `_prefix`
[INFO] [stderr] 
[INFO] [stderr] warning: crate `SledMultithreadTest` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `sled_multithread_test`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.90s
[INFO] running `"docker" "inspect" "c005929cfcf708d66c36b854533bdac90638bb7b883a1a689bf2662edc6eb295"`
[INFO] running `"docker" "rm" "-f" "c005929cfcf708d66c36b854533bdac90638bb7b883a1a689bf2662edc6eb295"`
[INFO] [stdout] c005929cfcf708d66c36b854533bdac90638bb7b883a1a689bf2662edc6eb295
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a5f05658428f9fce6299e16d62127d7b102b70546dea473cb7d1dc30a22da3a2
[INFO] running `"docker" "start" "-a" "a5f05658428f9fce6299e16d62127d7b102b70546dea473cb7d1dc30a22da3a2"`
[INFO] [stderr]    Compiling SledMultithreadTest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `SubCommand`
[INFO] [stderr]  --> src/main.rs:4:22
[INFO] [stderr]   |
[INFO] [stderr] 4 | use clap::{App, Arg, SubCommand};
[INFO] [stderr]   |                      ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prefix`
[INFO] [stderr]   --> src/main.rs:62:31
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn check_write(db: Arc<Tree>, prefix: i32) {
[INFO] [stderr]    |                               ^^^^^^ help: consider prefixing with an underscore: `_prefix`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prefix`
[INFO] [stderr]   --> src/main.rs:89:30
[INFO] [stderr]    |
[INFO] [stderr] 89 | fn check_read(db: Arc<Tree>, prefix: i32) {
[INFO] [stderr]    |                              ^^^^^^ help: consider prefixing with an underscore: `_prefix`
[INFO] [stderr] 
[INFO] [stderr] warning: crate `SledMultithreadTest` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `sled_multithread_test`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `"docker" "inspect" "a5f05658428f9fce6299e16d62127d7b102b70546dea473cb7d1dc30a22da3a2"`
[INFO] running `"docker" "rm" "-f" "a5f05658428f9fce6299e16d62127d7b102b70546dea473cb7d1dc30a22da3a2"`
[INFO] [stdout] a5f05658428f9fce6299e16d62127d7b102b70546dea473cb7d1dc30a22da3a2
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 21cc7643fadb06730970d9a9f7112a5a2a8562b369e2c9f572fe1b7866f46556
[INFO] running `"docker" "start" "-a" "21cc7643fadb06730970d9a9f7112a5a2a8562b369e2c9f572fe1b7866f46556"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/SledMultithreadTest-b0104cc8ec521d91
[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" "21cc7643fadb06730970d9a9f7112a5a2a8562b369e2c9f572fe1b7866f46556"`
[INFO] running `"docker" "rm" "-f" "21cc7643fadb06730970d9a9f7112a5a2a8562b369e2c9f572fe1b7866f46556"`
[INFO] [stdout] 21cc7643fadb06730970d9a9f7112a5a2a8562b369e2c9f572fe1b7866f46556