[INFO] updating cached repository manfredlotz/checkutf8
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/manfredlotz/checkutf8
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/manfredlotz/checkutf8" "work/ex/beta-1.38-1/sources/1.37.0/gh/manfredlotz/checkutf8"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/manfredlotz/checkutf8'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/manfredlotz/checkutf8" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/manfredlotz/checkutf8"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/manfredlotz/checkutf8'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7a11d83be28e1ddcc3c740206bfbf5294ec0aa42
[INFO] sha for GitHub repo manfredlotz/checkutf8: 7a11d83be28e1ddcc3c740206bfbf5294ec0aa42
[INFO] validating manifest of manfredlotz/checkutf8 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 manfredlotz/checkutf8 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 manfredlotz/checkutf8
[INFO] finished frobbing manfredlotz/checkutf8
[INFO] frobbed toml for manfredlotz/checkutf8 written to work/ex/beta-1.38-1/sources/1.37.0/gh/manfredlotz/checkutf8/Cargo.toml
[INFO] started frobbing manfredlotz/checkutf8
[INFO] finished frobbing manfredlotz/checkutf8
[INFO] frobbed toml for manfredlotz/checkutf8 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/manfredlotz/checkutf8/Cargo.toml
[INFO] crate manfredlotz/checkutf8 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing manfredlotz/checkutf8 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/manfredlotz/checkutf8:/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] 62557fbb56419852ceae041fe930c4229f3779a66fc25d64d3a5c4fcd91359d4
[INFO] running `"docker" "start" "-a" "62557fbb56419852ceae041fe930c4229f3779a66fc25d64d3a5c4fcd91359d4"`
[INFO] [stderr]    Compiling syn v0.13.4
[INFO] [stderr]    Compiling structopt-derive v0.2.8
[INFO] [stderr]    Compiling structopt v0.2.8
[INFO] [stderr]    Compiling checkutf8 v0.9.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.89s
[INFO] running `"docker" "inspect" "62557fbb56419852ceae041fe930c4229f3779a66fc25d64d3a5c4fcd91359d4"`
[INFO] running `"docker" "rm" "-f" "62557fbb56419852ceae041fe930c4229f3779a66fc25d64d3a5c4fcd91359d4"`
[INFO] [stdout] 62557fbb56419852ceae041fe930c4229f3779a66fc25d64d3a5c4fcd91359d4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/manfredlotz/checkutf8:/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] b1ccec2957060fdb9a25eb02f251eb63ebf3fe53cb8e530326cab80d48eed335
[INFO] running `"docker" "start" "-a" "b1ccec2957060fdb9a25eb02f251eb63ebf3fe53cb8e530326cab80d48eed335"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling checkutf8 v0.9.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.07s
[INFO] running `"docker" "inspect" "b1ccec2957060fdb9a25eb02f251eb63ebf3fe53cb8e530326cab80d48eed335"`
[INFO] running `"docker" "rm" "-f" "b1ccec2957060fdb9a25eb02f251eb63ebf3fe53cb8e530326cab80d48eed335"`
[INFO] [stdout] b1ccec2957060fdb9a25eb02f251eb63ebf3fe53cb8e530326cab80d48eed335
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/manfredlotz/checkutf8:/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] 106b1d2c60367b391cc53b10b5ec6b17230849798fbc8f2ecf93471faabde42a
[INFO] running `"docker" "start" "-a" "106b1d2c60367b391cc53b10b5ec6b17230849798fbc8f2ecf93471faabde42a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/checkutf8-86270f93360d642a
[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" "106b1d2c60367b391cc53b10b5ec6b17230849798fbc8f2ecf93471faabde42a"`
[INFO] running `"docker" "rm" "-f" "106b1d2c60367b391cc53b10b5ec6b17230849798fbc8f2ecf93471faabde42a"`
[INFO] [stdout] 106b1d2c60367b391cc53b10b5ec6b17230849798fbc8f2ecf93471faabde42a