[INFO] updating cached repository matklad/parking-lot-deadlock
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/matklad/parking-lot-deadlock
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/matklad/parking-lot-deadlock" "work/ex/beta-1.38-1/sources/1.37.0/gh/matklad/parking-lot-deadlock"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/matklad/parking-lot-deadlock'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/matklad/parking-lot-deadlock" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/matklad/parking-lot-deadlock"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/matklad/parking-lot-deadlock'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 95989b3da40ed42e1ed7acba829d20b8b4319845
[INFO] sha for GitHub repo matklad/parking-lot-deadlock: 95989b3da40ed42e1ed7acba829d20b8b4319845
[INFO] validating manifest of matklad/parking-lot-deadlock on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of matklad/parking-lot-deadlock on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing matklad/parking-lot-deadlock
[INFO] finished frobbing matklad/parking-lot-deadlock
[INFO] frobbed toml for matklad/parking-lot-deadlock written to work/ex/beta-1.38-1/sources/1.37.0/gh/matklad/parking-lot-deadlock/Cargo.toml
[INFO] started frobbing matklad/parking-lot-deadlock
[INFO] finished frobbing matklad/parking-lot-deadlock
[INFO] frobbed toml for matklad/parking-lot-deadlock written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/matklad/parking-lot-deadlock/Cargo.toml
[INFO] crate matklad/parking-lot-deadlock already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing matklad/parking-lot-deadlock against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/matklad/parking-lot-deadlock:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 78e177bc402f41841fdb98346e5c48cf2b842d8a465f2b547541feec6806e8db
[INFO] running `"docker" "start" "-a" "78e177bc402f41841fdb98346e5c48cf2b842d8a465f2b547541feec6806e8db"`
[INFO] [stderr]    Compiling pl-bug v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let N = 100_000;
[INFO] [stderr]    |         ^ help: convert the identifier to snake case: `n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `"docker" "inspect" "78e177bc402f41841fdb98346e5c48cf2b842d8a465f2b547541feec6806e8db"`
[INFO] running `"docker" "rm" "-f" "78e177bc402f41841fdb98346e5c48cf2b842d8a465f2b547541feec6806e8db"`
[INFO] [stdout] 78e177bc402f41841fdb98346e5c48cf2b842d8a465f2b547541feec6806e8db
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/matklad/parking-lot-deadlock:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] fc3100076f6da9c7765d6939be700d6fbd902a6c967e3e5990f4d4d7d9450bdb
[INFO] running `"docker" "start" "-a" "fc3100076f6da9c7765d6939be700d6fbd902a6c967e3e5990f4d4d7d9450bdb"`
[INFO] [stderr]    Compiling pl-bug v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let N = 100_000;
[INFO] [stderr]    |         ^ help: convert the identifier to snake case: `n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "fc3100076f6da9c7765d6939be700d6fbd902a6c967e3e5990f4d4d7d9450bdb"`
[INFO] running `"docker" "rm" "-f" "fc3100076f6da9c7765d6939be700d6fbd902a6c967e3e5990f4d4d7d9450bdb"`
[INFO] [stdout] fc3100076f6da9c7765d6939be700d6fbd902a6c967e3e5990f4d4d7d9450bdb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/matklad/parking-lot-deadlock:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 60a60aad993136af3b9d730f4fb333ebddb686d6017f6bd9f8709fdde36a8033
[INFO] running `"docker" "start" "-a" "60a60aad993136af3b9d730f4fb333ebddb686d6017f6bd9f8709fdde36a8033"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/pl_bug-fd161312d38f977a
[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" "60a60aad993136af3b9d730f4fb333ebddb686d6017f6bd9f8709fdde36a8033"`
[INFO] running `"docker" "rm" "-f" "60a60aad993136af3b9d730f4fb333ebddb686d6017f6bd9f8709fdde36a8033"`
[INFO] [stdout] 60a60aad993136af3b9d730f4fb333ebddb686d6017f6bd9f8709fdde36a8033