[INFO] crate wsl 0.1.0 is already in cache
[INFO] extracting crate wsl 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/wsl/0.1.0
[INFO] extracting crate wsl 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/wsl/0.1.0
[INFO] validating manifest of wsl-0.1.0 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 wsl-0.1.0 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 wsl-0.1.0
[INFO] finished frobbing wsl-0.1.0
[INFO] frobbed toml for wsl-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/wsl/0.1.0/Cargo.toml
[INFO] started frobbing wsl-0.1.0
[INFO] finished frobbing wsl-0.1.0
[INFO] frobbed toml for wsl-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/wsl/0.1.0/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] 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] testing wsl-0.1.0 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-4/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/wsl/0.1.0:/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] ca63eb661a00c39864f790f525e14aa53e7bc27cdfc6a4180d415775af93f2c2
[INFO] running `"docker" "start" "-a" "ca63eb661a00c39864f790f525e14aa53e7bc27cdfc6a4180d415775af93f2c2"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling wsl v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `"docker" "inspect" "ca63eb661a00c39864f790f525e14aa53e7bc27cdfc6a4180d415775af93f2c2"`
[INFO] running `"docker" "rm" "-f" "ca63eb661a00c39864f790f525e14aa53e7bc27cdfc6a4180d415775af93f2c2"`
[INFO] [stdout] ca63eb661a00c39864f790f525e14aa53e7bc27cdfc6a4180d415775af93f2c2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/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/wsl/0.1.0:/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] dad6e544039cabf2124b2dca41aa7e2d64c96eaed0ec63a55643649dc129b9ea
[INFO] running `"docker" "start" "-a" "dad6e544039cabf2124b2dca41aa7e2d64c96eaed0ec63a55643649dc129b9ea"`
[INFO] [stderr]    Compiling wsl v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "dad6e544039cabf2124b2dca41aa7e2d64c96eaed0ec63a55643649dc129b9ea"`
[INFO] running `"docker" "rm" "-f" "dad6e544039cabf2124b2dca41aa7e2d64c96eaed0ec63a55643649dc129b9ea"`
[INFO] [stdout] dad6e544039cabf2124b2dca41aa7e2d64c96eaed0ec63a55643649dc129b9ea
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/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/wsl/0.1.0:/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] 2c205baf840b2b142e9ae9b24d97a99afe047add54ade620f621e9579a9c96a2
[INFO] running `"docker" "start" "-a" "2c205baf840b2b142e9ae9b24d97a99afe047add54ade620f621e9579a9c96a2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/wsl-09bf61a0067e7fb8
[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 wsl
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 4) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs -  (line 4) stdout ----
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |           - expected `()` because of default return type
[INFO] [stdout] 4 | wsl::is_wsl()
[INFO] [stdout]   | ^^^^^^^^^^^^^- help: try adding a semicolon: `;`
[INFO] [stdout]   | |
[INFO] [stdout]   | expected (), found bool
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected type `()`
[INFO] [stdout]              found type `bool`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs -  (line 4)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "2c205baf840b2b142e9ae9b24d97a99afe047add54ade620f621e9579a9c96a2"`
[INFO] running `"docker" "rm" "-f" "2c205baf840b2b142e9ae9b24d97a99afe047add54ade620f621e9579a9c96a2"`
[INFO] [stdout] 2c205baf840b2b142e9ae9b24d97a99afe047add54ade620f621e9579a9c96a2