[INFO] updating cached repository letsmut/hello
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/letsmut/hello
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/letsmut/hello" "work/ex/beta-1.37-6/sources/1.36.0/gh/letsmut/hello"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/letsmut/hello'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/letsmut/hello" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/letsmut/hello"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/letsmut/hello'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9df6f0d924a4115cef6c23aadc2f1e784e9342df
[INFO] sha for GitHub repo letsmut/hello: 9df6f0d924a4115cef6c23aadc2f1e784e9342df
[INFO] validating manifest of letsmut/hello 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 letsmut/hello 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 letsmut/hello
[INFO] finished frobbing letsmut/hello
[INFO] frobbed toml for letsmut/hello written to work/ex/beta-1.37-6/sources/1.36.0/gh/letsmut/hello/Cargo.toml
[INFO] started frobbing letsmut/hello
[INFO] finished frobbing letsmut/hello
[INFO] frobbed toml for letsmut/hello written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/letsmut/hello/Cargo.toml
[INFO] crate letsmut/hello already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing letsmut/hello 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-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/letsmut/hello:/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] a03c05ec61ebdf011759974cffac23bfe5a849dfca497cc970cfc904271759f3
[INFO] running `"docker" "start" "-a" "a03c05ec61ebdf011759974cffac23bfe5a849dfca497cc970cfc904271759f3"`
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.07s
[INFO] running `"docker" "inspect" "a03c05ec61ebdf011759974cffac23bfe5a849dfca497cc970cfc904271759f3"`
[INFO] running `"docker" "rm" "-f" "a03c05ec61ebdf011759974cffac23bfe5a849dfca497cc970cfc904271759f3"`
[INFO] [stdout] a03c05ec61ebdf011759974cffac23bfe5a849dfca497cc970cfc904271759f3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/letsmut/hello:/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] 9c0b0daa142334f7a60cece406106fe9e5c510c8d5f8ddc181baa279954843a7
[INFO] running `"docker" "start" "-a" "9c0b0daa142334f7a60cece406106fe9e5c510c8d5f8ddc181baa279954843a7"`
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `"docker" "inspect" "9c0b0daa142334f7a60cece406106fe9e5c510c8d5f8ddc181baa279954843a7"`
[INFO] running `"docker" "rm" "-f" "9c0b0daa142334f7a60cece406106fe9e5c510c8d5f8ddc181baa279954843a7"`
[INFO] [stdout] 9c0b0daa142334f7a60cece406106fe9e5c510c8d5f8ddc181baa279954843a7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/letsmut/hello:/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] 24a95c177cd41435e036667e94a030fec6d9bbfdcedc4d0fe18b79dfc6fe9835
[INFO] running `"docker" "start" "-a" "24a95c177cd41435e036667e94a030fec6d9bbfdcedc4d0fe18b79dfc6fe9835"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hello-6bdfbea60f531cee
[INFO] [stderr]      Running /opt/crater/target/debug/deps/main-da0459e375504659
[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] [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 hello
[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" "24a95c177cd41435e036667e94a030fec6d9bbfdcedc4d0fe18b79dfc6fe9835"`
[INFO] running `"docker" "rm" "-f" "24a95c177cd41435e036667e94a030fec6d9bbfdcedc4d0fe18b79dfc6fe9835"`
[INFO] [stdout] 24a95c177cd41435e036667e94a030fec6d9bbfdcedc4d0fe18b79dfc6fe9835