[INFO] crate filebuffer 0.4.0 is already in cache
[INFO] extracting crate filebuffer 0.4.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/filebuffer/0.4.0
[INFO] extracting crate filebuffer 0.4.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/filebuffer/0.4.0
[INFO] validating manifest of filebuffer-0.4.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of filebuffer-0.4.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing filebuffer-0.4.0
[INFO] finished frobbing filebuffer-0.4.0
[INFO] frobbed toml for filebuffer-0.4.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/filebuffer/0.4.0/Cargo.toml
[INFO] started frobbing filebuffer-0.4.0
[INFO] finished frobbing filebuffer-0.4.0
[INFO] frobbed toml for filebuffer-0.4.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/filebuffer/0.4.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing filebuffer-0.4.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/filebuffer/0.4.0:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 72d3d6ab63a22a3d637382c8a6a7c90396e1f3739faedb0bf797ae2f02817d70
[INFO] running `"docker" "start" "-a" "72d3d6ab63a22a3d637382c8a6a7c90396e1f3739faedb0bf797ae2f02817d70"`
[INFO] [stderr]    Compiling filebuffer v0.4.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `"docker" "inspect" "72d3d6ab63a22a3d637382c8a6a7c90396e1f3739faedb0bf797ae2f02817d70"`
[INFO] running `"docker" "rm" "-f" "72d3d6ab63a22a3d637382c8a6a7c90396e1f3739faedb0bf797ae2f02817d70"`
[INFO] [stdout] 72d3d6ab63a22a3d637382c8a6a7c90396e1f3739faedb0bf797ae2f02817d70
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/filebuffer/0.4.0:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 336649956e5a894f620fc18fb5058171454f0b17bd70e6bc54e8fb0aa9a89d72
[INFO] running `"docker" "start" "-a" "336649956e5a894f620fc18fb5058171454f0b17bd70e6bc54e8fb0aa9a89d72"`
[INFO] [stderr]    Compiling gcc v0.3.35
[INFO] [stderr]    Compiling time v0.1.35
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling filebuffer v0.4.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.79s
[INFO] running `"docker" "inspect" "336649956e5a894f620fc18fb5058171454f0b17bd70e6bc54e8fb0aa9a89d72"`
[INFO] running `"docker" "rm" "-f" "336649956e5a894f620fc18fb5058171454f0b17bd70e6bc54e8fb0aa9a89d72"`
[INFO] [stdout] 336649956e5a894f620fc18fb5058171454f0b17bd70e6bc54e8fb0aa9a89d72
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/filebuffer/0.4.0:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 694419e9bd845dbaaa7431b90ba0f4ab78fa1dd3e895a914e2ec5b511a59ed57
[INFO] running `"docker" "start" "-a" "694419e9bd845dbaaa7431b90ba0f4ab78fa1dd3e895a914e2ec5b511a59ed57"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/filebuffer-87023860b14bfdba
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test make_resident ... ok
[INFO] [stdout] test open_empty_file_is_fine ... ok
[INFO] [stdout] test fbuffer_can_be_shared_among_threads ... ok
[INFO] [stdout] test fbuffer_can_be_moved_into_thread ... ok
[INFO] [stdout] test empty_file_prefetch_is_fine ... ok
[INFO] [stdout] test empty_file_has_zero_resident_len ... ok
[INFO] [stdout] test drop_after_leak ... ok
[INFO] [stdout] test empty_file_deref_is_fine ... ok
[INFO] [stdout] test open_file ... ok
[INFO] [stdout] test page_size_at_least_4096 ... ok
[INFO] [stdout] test prefetch_is_not_harmful ... ok
[INFO] [stdout] test verify_round_up_to ... ok
[INFO] [stdout] test verify_round_down_to ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests filebuffer
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 15) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "694419e9bd845dbaaa7431b90ba0f4ab78fa1dd3e895a914e2ec5b511a59ed57"`
[INFO] running `"docker" "rm" "-f" "694419e9bd845dbaaa7431b90ba0f4ab78fa1dd3e895a914e2ec5b511a59ed57"`
[INFO] [stdout] 694419e9bd845dbaaa7431b90ba0f4ab78fa1dd3e895a914e2ec5b511a59ed57