[INFO] updating cached repository simon-i1-h/natuconv
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/simon-i1-h/natuconv
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/simon-i1-h/natuconv" "work/ex/beta-1.38-1/sources/1.37.0/gh/simon-i1-h/natuconv"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/simon-i1-h/natuconv'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/simon-i1-h/natuconv" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/simon-i1-h/natuconv"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/simon-i1-h/natuconv'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f9f1d7cc0e77daaad751cd093f9a6aa920779c44
[INFO] sha for GitHub repo simon-i1-h/natuconv: f9f1d7cc0e77daaad751cd093f9a6aa920779c44
[INFO] validating manifest of simon-i1-h/natuconv 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 simon-i1-h/natuconv 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 simon-i1-h/natuconv
[INFO] finished frobbing simon-i1-h/natuconv
[INFO] frobbed toml for simon-i1-h/natuconv written to work/ex/beta-1.38-1/sources/1.37.0/gh/simon-i1-h/natuconv/Cargo.toml
[INFO] started frobbing simon-i1-h/natuconv
[INFO] finished frobbing simon-i1-h/natuconv
[INFO] frobbed toml for simon-i1-h/natuconv written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/simon-i1-h/natuconv/Cargo.toml
[INFO] crate simon-i1-h/natuconv 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] testing simon-i1-h/natuconv 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/simon-i1-h/natuconv:/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] efe23ff61a13eee237446589227205af44cc767edf1187dc50482e853cc0d12e
[INFO] running `"docker" "start" "-a" "efe23ff61a13eee237446589227205af44cc767edf1187dc50482e853cc0d12e"`
[INFO] [stderr]    Compiling natuconv v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `core::str::<impl str>::trim_end` that must be used
[INFO] [stderr]  --> src/bin/natuconv.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     buf.trim_end();
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]   = note: this returns the trimmed string as a new slice, without modifying the original
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.70s
[INFO] running `"docker" "inspect" "efe23ff61a13eee237446589227205af44cc767edf1187dc50482e853cc0d12e"`
[INFO] running `"docker" "rm" "-f" "efe23ff61a13eee237446589227205af44cc767edf1187dc50482e853cc0d12e"`
[INFO] [stdout] efe23ff61a13eee237446589227205af44cc767edf1187dc50482e853cc0d12e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/simon-i1-h/natuconv:/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] 84955c8c9dc08c72e1c29da114b025a9f2eca4248246046e5f529d9d06c2077e
[INFO] running `"docker" "start" "-a" "84955c8c9dc08c72e1c29da114b025a9f2eca4248246046e5f529d9d06c2077e"`
[INFO] [stderr]    Compiling natuconv v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `core::str::<impl str>::trim_end` that must be used
[INFO] [stderr]  --> src/bin/natuconv.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     buf.trim_end();
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]   = note: this returns the trimmed string as a new slice, without modifying the original
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `"docker" "inspect" "84955c8c9dc08c72e1c29da114b025a9f2eca4248246046e5f529d9d06c2077e"`
[INFO] running `"docker" "rm" "-f" "84955c8c9dc08c72e1c29da114b025a9f2eca4248246046e5f529d9d06c2077e"`
[INFO] [stdout] 84955c8c9dc08c72e1c29da114b025a9f2eca4248246046e5f529d9d06c2077e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/simon-i1-h/natuconv:/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] d20033a6ea5ec8ee9dc6da6d97481bf09c1806ae89acd4c27b8099384f39fb3f
[INFO] running `"docker" "start" "-a" "d20033a6ea5ec8ee9dc6da6d97481bf09c1806ae89acd4c27b8099384f39fb3f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/natuconv-abf0c70ab6424976
[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/natuconv_test-ad3d8c754d177db6
[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" "d20033a6ea5ec8ee9dc6da6d97481bf09c1806ae89acd4c27b8099384f39fb3f"`
[INFO] running `"docker" "rm" "-f" "d20033a6ea5ec8ee9dc6da6d97481bf09c1806ae89acd4c27b8099384f39fb3f"`
[INFO] [stdout] d20033a6ea5ec8ee9dc6da6d97481bf09c1806ae89acd4c27b8099384f39fb3f