[INFO] fetching crate zstd-safe 1.4.12+zstd.1.4.2...
[INFO] extracting crate zstd-safe 1.4.12+zstd.1.4.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/zstd-safe/1.4.12+zstd.1.4.2
[INFO] extracting crate zstd-safe 1.4.12+zstd.1.4.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/zstd-safe/1.4.12+zstd.1.4.2
[INFO] validating manifest of zstd-safe-1.4.12+zstd.1.4.2 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 zstd-safe-1.4.12+zstd.1.4.2 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 zstd-safe-1.4.12+zstd.1.4.2
[INFO] finished frobbing zstd-safe-1.4.12+zstd.1.4.2
[INFO] frobbed toml for zstd-safe-1.4.12+zstd.1.4.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/zstd-safe/1.4.12+zstd.1.4.2/Cargo.toml
[INFO] started frobbing zstd-safe-1.4.12+zstd.1.4.2
[INFO] finished frobbing zstd-safe-1.4.12+zstd.1.4.2
[INFO] frobbed toml for zstd-safe-1.4.12+zstd.1.4.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/zstd-safe/1.4.12+zstd.1.4.2/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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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 zstd-safe-1.4.12+zstd.1.4.2 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/zstd-safe/1.4.12+zstd.1.4.2:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] e6333bad01a90daf0b3931d266266339caaa76a4fc4430a878c2881608ab9e7d
[INFO] running `"docker" "start" "-a" "e6333bad01a90daf0b3931d266266339caaa76a4fc4430a878c2881608ab9e7d"`
[INFO] [stderr]    Compiling cc v1.0.38
[INFO] [stderr]    Compiling zstd-sys v1.4.12+zstd.1.4.2
[INFO] [stderr]    Compiling zstd-safe v1.4.12+zstd.1.4.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `c_int`, `c_ulonglong`
[INFO] [stderr]   --> src/lib.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 41 | use libc::{c_int, c_ulonglong, c_void};
[INFO] [stderr]    |            ^^^^^  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.89s
[INFO] running `"docker" "inspect" "e6333bad01a90daf0b3931d266266339caaa76a4fc4430a878c2881608ab9e7d"`
[INFO] running `"docker" "rm" "-f" "e6333bad01a90daf0b3931d266266339caaa76a4fc4430a878c2881608ab9e7d"`
[INFO] [stdout] e6333bad01a90daf0b3931d266266339caaa76a4fc4430a878c2881608ab9e7d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/zstd-safe/1.4.12+zstd.1.4.2:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d46b0035bfb999a5d1ac999871cc0ef11147331e1a9ef31eb374cc176ea28a1b
[INFO] running `"docker" "start" "-a" "d46b0035bfb999a5d1ac999871cc0ef11147331e1a9ef31eb374cc176ea28a1b"`
[INFO] [stderr]    Compiling zstd-safe v1.4.12+zstd.1.4.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `c_int`, `c_ulonglong`
[INFO] [stderr]   --> src/lib.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 41 | use libc::{c_int, c_ulonglong, c_void};
[INFO] [stderr]    |            ^^^^^  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `"docker" "inspect" "d46b0035bfb999a5d1ac999871cc0ef11147331e1a9ef31eb374cc176ea28a1b"`
[INFO] running `"docker" "rm" "-f" "d46b0035bfb999a5d1ac999871cc0ef11147331e1a9ef31eb374cc176ea28a1b"`
[INFO] [stdout] d46b0035bfb999a5d1ac999871cc0ef11147331e1a9ef31eb374cc176ea28a1b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/zstd-safe/1.4.12+zstd.1.4.2:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] db61da976a5c871e33b6a414e09a98f3164e904a58250ab2d8e5b76efd87e6af
[INFO] running `"docker" "start" "-a" "db61da976a5c871e33b6a414e09a98f3164e904a58250ab2d8e5b76efd87e6af"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/zstd_safe-85eb7fc4f8944146
[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] [stderr]    Doc-tests zstd-safe
[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" "db61da976a5c871e33b6a414e09a98f3164e904a58250ab2d8e5b76efd87e6af"`
[INFO] running `"docker" "rm" "-f" "db61da976a5c871e33b6a414e09a98f3164e904a58250ab2d8e5b76efd87e6af"`
[INFO] [stdout] db61da976a5c871e33b6a414e09a98f3164e904a58250ab2d8e5b76efd87e6af