[INFO] crate loch 0.0.1 is already in cache
[INFO] extracting crate loch 0.0.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/loch/0.0.1
[INFO] extracting crate loch 0.0.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/loch/0.0.1
[INFO] validating manifest of loch-0.0.1 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 loch-0.0.1 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 loch-0.0.1
[INFO] finished frobbing loch-0.0.1
[INFO] frobbed toml for loch-0.0.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/loch/0.0.1/Cargo.toml
[INFO] started frobbing loch-0.0.1
[INFO] finished frobbing loch-0.0.1
[INFO] frobbed toml for loch-0.0.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/loch/0.0.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "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" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing loch-0.0.1 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/loch/0.0.1:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] d30df1c10cb0c587cf47f8fdc40318319cccbd70c7065ce9d40ea4e6bf929d7e
[INFO] running `"docker" "start" "-a" "d30df1c10cb0c587cf47f8fdc40318319cccbd70c7065ce9d40ea4e6bf929d7e"`
[INFO] [stderr]    Compiling loch v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `curl::easy::Easy`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use curl::easy::Easy;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.85s
[INFO] running `"docker" "inspect" "d30df1c10cb0c587cf47f8fdc40318319cccbd70c7065ce9d40ea4e6bf929d7e"`
[INFO] running `"docker" "rm" "-f" "d30df1c10cb0c587cf47f8fdc40318319cccbd70c7065ce9d40ea4e6bf929d7e"`
[INFO] [stdout] d30df1c10cb0c587cf47f8fdc40318319cccbd70c7065ce9d40ea4e6bf929d7e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/loch/0.0.1:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] e31bb78fcbe71a3d10336662dae0fea061b9c04e41cc44c8729ad5b2c9688e37
[INFO] running `"docker" "start" "-a" "e31bb78fcbe71a3d10336662dae0fea061b9c04e41cc44c8729ad5b2c9688e37"`
[INFO] [stderr]    Compiling loch v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `curl::easy::Easy`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use curl::easy::Easy;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "e31bb78fcbe71a3d10336662dae0fea061b9c04e41cc44c8729ad5b2c9688e37"`
[INFO] running `"docker" "rm" "-f" "e31bb78fcbe71a3d10336662dae0fea061b9c04e41cc44c8729ad5b2c9688e37"`
[INFO] [stdout] e31bb78fcbe71a3d10336662dae0fea061b9c04e41cc44c8729ad5b2c9688e37
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/loch/0.0.1:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 264b4cd3893d7d6ee4fe08bc5da03a375036bc3dc3f595fcd03ea1f38f8f04d4
[INFO] running `"docker" "start" "-a" "264b4cd3893d7d6ee4fe08bc5da03a375036bc3dc3f595fcd03ea1f38f8f04d4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/loch-b480492c9973e688
[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]      Running /opt/crater/target/debug/deps/loch-46dfbf81df9e797a
[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]      Running /opt/crater/target/debug/deps/file_walk-c811a3274750d0ac
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test all_files ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests loch
[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" "264b4cd3893d7d6ee4fe08bc5da03a375036bc3dc3f595fcd03ea1f38f8f04d4"`
[INFO] running `"docker" "rm" "-f" "264b4cd3893d7d6ee4fe08bc5da03a375036bc3dc3f595fcd03ea1f38f8f04d4"`
[INFO] [stdout] 264b4cd3893d7d6ee4fe08bc5da03a375036bc3dc3f595fcd03ea1f38f8f04d4