[INFO] updating cached repository yoshuawuyts/how
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yoshuawuyts/how
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yoshuawuyts/how" "work/ex/beta-1.37-6/sources/1.36.0/gh/yoshuawuyts/how"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/yoshuawuyts/how'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yoshuawuyts/how" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yoshuawuyts/how"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yoshuawuyts/how'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 266cf74b516607badb75e87dff7d519229e9ebde
[INFO] sha for GitHub repo yoshuawuyts/how: 266cf74b516607badb75e87dff7d519229e9ebde
[INFO] validating manifest of yoshuawuyts/how 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 yoshuawuyts/how 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 yoshuawuyts/how
[INFO] finished frobbing yoshuawuyts/how
[INFO] frobbed toml for yoshuawuyts/how written to work/ex/beta-1.37-6/sources/1.36.0/gh/yoshuawuyts/how/Cargo.toml
[INFO] started frobbing yoshuawuyts/how
[INFO] finished frobbing yoshuawuyts/how
[INFO] frobbed toml for yoshuawuyts/how written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yoshuawuyts/how/Cargo.toml
[INFO] crate yoshuawuyts/how 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] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/yoshuawuyts/how/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 yoshuawuyts/how 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-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yoshuawuyts/how:/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] 2cfbbef946264204a694c2bc670c045b1b06267fc32ff4730cef5c9a089f0bf7
[INFO] running `"docker" "start" "-a" "2cfbbef946264204a694c2bc670c045b1b06267fc32ff4730cef5c9a089f0bf7"`
[INFO] [stderr]    Compiling bitflags v0.3.3
[INFO] [stderr]    Compiling getopts v0.2.19
[INFO] [stderr]    Compiling pulldown-cmark v0.0.5
[INFO] [stderr]    Compiling how v1.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.17s
[INFO] running `"docker" "inspect" "2cfbbef946264204a694c2bc670c045b1b06267fc32ff4730cef5c9a089f0bf7"`
[INFO] running `"docker" "rm" "-f" "2cfbbef946264204a694c2bc670c045b1b06267fc32ff4730cef5c9a089f0bf7"`
[INFO] [stdout] 2cfbbef946264204a694c2bc670c045b1b06267fc32ff4730cef5c9a089f0bf7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yoshuawuyts/how:/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] 345f0e45cdbbbca80c7bdfc6072518ecdff6de82a5ddb2603034335f25fd6945
[INFO] running `"docker" "start" "-a" "345f0e45cdbbbca80c7bdfc6072518ecdff6de82a5ddb2603034335f25fd6945"`
[INFO] [stderr]    Compiling how v1.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `"docker" "inspect" "345f0e45cdbbbca80c7bdfc6072518ecdff6de82a5ddb2603034335f25fd6945"`
[INFO] running `"docker" "rm" "-f" "345f0e45cdbbbca80c7bdfc6072518ecdff6de82a5ddb2603034335f25fd6945"`
[INFO] [stdout] 345f0e45cdbbbca80c7bdfc6072518ecdff6de82a5ddb2603034335f25fd6945
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yoshuawuyts/how:/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] 936a02c4dad2f3399ed66915845353419ecac62d78ce129769f73462aba2d931
[INFO] running `"docker" "start" "-a" "936a02c4dad2f3399ed66915845353419ecac62d78ce129769f73462aba2d931"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/how-fd6c9e8b7da7bd2d
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/how-6a3fd469a3f9a3f7
[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] [stderr]    Doc-tests how
[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] running `"docker" "inspect" "936a02c4dad2f3399ed66915845353419ecac62d78ce129769f73462aba2d931"`
[INFO] running `"docker" "rm" "-f" "936a02c4dad2f3399ed66915845353419ecac62d78ce129769f73462aba2d931"`
[INFO] [stdout] 936a02c4dad2f3399ed66915845353419ecac62d78ce129769f73462aba2d931